Csharp/C Sharp/Database ADO.net/DataGridView
Содержание
- 1 Bind DataGridView to Array
- 2 Bind List to DataGridView
- 3 Custom DataGridView with DataGridViewTextBoxColumn, DataGridViewImageColumn,DataGridViewComboBoxColumn
- 4 Data Source with Generic Collection
- 5 Setup Columns for DataGridView
- 6 Set up DataGridView from DataColumn
- 7 Use DataViewRowState to filter DataGridView
Bind DataGridView to Array
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
Item[] items = new Item[] { new Item ( "One" ) , new Item ( "Two" ) , new Item ( "Three" ) };
dataGridView1.AutoGenerateColumns = true;
dataGridView1.DataSource = items;
}
protected class Item {
public Item(string text) {
m_text = text;
}
public string Text {
get { return m_text; }
}
private string m_text;
}
private void InitializeComponent() {
this.dataGridView1 = new System.Windows.Forms.DataGridView();
this.getData = new System.Windows.Forms.Button();
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Location = new System.Drawing.Point(12, 12);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(268, 223);
this.dataGridView1.TabIndex = 0;
this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.getData.Location = new System.Drawing.Point(204, 242);
this.getData.Name = "getData";
this.getData.Size = new System.Drawing.Size(75, 23);
this.getData.TabIndex = 1;
this.getData.Text = "Get Data";
this.getData.UseVisualStyleBackColor = true;
this.getData.Click += new System.EventHandler(this.getData_Click);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 271);
this.Controls.Add(this.getData);
this.Controls.Add(this.dataGridView1);
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView dataGridView1;
private System.Windows.Forms.Button getData;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
</source>
Bind List to DataGridView
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms;
using System; using System.Collections.Generic; using System.ruponentModel; using System.Drawing; using System.Text; public class Person {
public Person(string name, Sex sex, DateTime dob) {
_name = name;
_sex = sex;
_dateOfBirth = dob;
}
public string Name {
get { return _name; }
set { _name = value; }
}
public Sex Sex {
get { return _sex; }
set { _sex = value; }
}
public DateTime DateOfBirth {
get { return _dateOfBirth; }
set { _dateOfBirth = value; }
}
private string _name;
private Sex _sex;
private DateTime _dateOfBirth;
} public enum Sex {
Male, Female
} class PersonList : List<Person> { } public class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
PersonList people = new PersonList();
people.Add(new Person("F", Sex.Male, new DateTime(1970, 12, 14)));
people.Add(new Person("B", Sex.Male, new DateTime(1976, 10, 29)));
people.Add(new Person("J", Sex.Male, new DateTime(1945, 5, 17)));
people.Add(new Person("J", Sex.Female, new DateTime(1982, 1, 3)));
dataGridView1.AutoGenerateColumns = true;
dataGridView1.DataSource = people;
}
private void InitializeComponent() {
this.dataGridView1 = new System.Windows.Forms.DataGridView();
this.getData = new System.Windows.Forms.Button();
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
//
this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Location = new System.Drawing.Point(13, 13);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(267, 217);
this.dataGridView1.TabIndex = 0;
//
this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.getData.Location = new System.Drawing.Point(205, 236);
this.getData.Size = new System.Drawing.Size(75, 23);
this.getData.Text = "Get Data";
this.getData.UseVisualStyleBackColor = true;
this.getData.Click += new System.EventHandler(this.getData_Click);
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 271);
this.Controls.Add(this.getData);
this.Controls.Add(this.dataGridView1);
this.Text = "DataSourceGenericCollection";
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView dataGridView1;
private System.Windows.Forms.Button getData;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
</source>
Custom DataGridView with DataGridViewTextBoxColumn, DataGridViewImageColumn,DataGridViewComboBoxColumn
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Windows.Forms; class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
getData.Enabled = false;
using (SqlConnection con = new SqlConnection(ConfigurationSettings.ConnectionStrings["northwind"].ConnectionString)) {
string select = "SELECT EmployeeID, FirstName, LastName, Photo, IsNull(ReportsTo,0) as ReportsTo FROM Employees";
SqlDataAdapter da = new SqlDataAdapter(select, con);
DataSet ds = new DataSet();
da.Fill(ds, "Employees");
select = "SELECT EmployeeID, FirstName + " " + LastName as Name FROM Employees union select 0,"(None)"";
da = new SqlDataAdapter(select, con);
da.Fill(ds, "Managers");
SetupColumns(ds);
dataGridView.AutoGenerateColumns = false;
dataGridView.DataSource = ds.Tables["Employees"];
dataGridView.AutoSizeRows(DataGridViewAutoSizeRowsMode.HeaderAndColumnsAllRows);
}
}
private void SetupColumns(DataSet ds) {
DataGridViewTextBoxColumn forenameColumn = new DataGridViewTextBoxColumn();
forenameColumn.DataPropertyName = "FirstName";
forenameColumn.HeaderText = "Forename";
forenameColumn.ValueType = typeof(string);
forenameColumn.Frozen = true;
dataGridView.Columns.Add(forenameColumn);
DataGridViewTextBoxColumn surnameColumn = new DataGridViewTextBoxColumn();
surnameColumn.DataPropertyName = "LastName";
surnameColumn.HeaderText = "Surname";
surnameColumn.Frozen = true;
surnameColumn.ValueType = typeof(string);
dataGridView.Columns.Add(surnameColumn);
DataGridViewImageColumn photoColumn = new DataGridViewImageColumn();
photoColumn.DataPropertyName = "Photo";
photoColumn.Width = 200;
photoColumn.HeaderText = "Image";
photoColumn.ReadOnly = true;
photoColumn.ImageLayout = DataGridViewImageCellLayout.Normal;
dataGridView.Columns.Add(photoColumn);
DataGridViewComboBoxColumn reportsToColumn = new DataGridViewComboBoxColumn();
reportsToColumn.HeaderText = "Reports To";
reportsToColumn.DataSource = ds.Tables["Managers"];
reportsToColumn.DisplayMember = "Name";
reportsToColumn.ValueMember = "EmployeeID";
reportsToColumn.DataPropertyName = "ReportsTo";
dataGridView.Columns.Add(reportsToColumn);
}
private void InitializeComponent() {
this.getData = new System.Windows.Forms.Button();
this.dataGridView = new System.Windows.Forms.DataGridView();
this.SuspendLayout();
//
// getData
//
this.getData.Location = new System.Drawing.Point(661, 544);
this.getData.Name = "getData";
this.getData.TabIndex = 0;
this.getData.Text = "Get Data";
this.getData.Click += new System.EventHandler(this.getData_Click);
//
// dataGridView
//
this.dataGridView.AllowUserToAddRows = false;
this.dataGridView.AllowUserToDeleteRows = false;
this.dataGridView.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dataGridView.Location = new System.Drawing.Point(13, 13);
this.dataGridView.Name = "dataGridView";
this.dataGridView.Size = new System.Drawing.Size(722, 522);
this.dataGridView.TabIndex = 1;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(748, 579);
this.Controls.Add(this.dataGridView);
this.Controls.Add(this.getData);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
private System.Windows.Forms.Button getData;
private System.Windows.Forms.DataGridView dataGridView;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.EnableRTLMirroring();
Application.Run(new Form1());
}
}
</source>
Data Source with Generic Collection
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Drawing; using System.Text; using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms; public class Person {
public Person(string name, Sex sex, DateTime dob) {
_name = name;
_sex = sex;
_dateOfBirth = dob;
}
public string Name {
get { return _name; }
set { _name = value; }
}
public Sex Sex {
get { return _sex; }
set { _sex = value; }
}
public DateTime DateOfBirth {
get { return _dateOfBirth; }
set { _dateOfBirth = value; }
}
private string _name;
private Sex _sex;
private DateTime _dateOfBirth;
} public enum Sex {
Male, Female
} class PersonList : List<Person> { } public class SexDisplay {
public SexDisplay(Sex s) {
_sex = s;
_caption = s.ToString();
}
public Sex Sex {
get { return _sex; }
}
public string Caption {
get { return _caption; }
}
private Sex _sex;
private string _caption;
} public class SexList : List<SexDisplay> { } class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
PersonList people = new PersonList();
people.Add(new Person("F", Sex.Male, new DateTime(1970, 12, 14)));
people.Add(new Person("B", Sex.Male, new DateTime(1976, 10, 29)));
people.Add(new Person("J", Sex.Male, new DateTime(1945, 5, 17)));
people.Add(new Person("J", Sex.Female, new DateTime(1982, 1, 3)));
dataGridView.AutoGenerateColumns = true;
dataGridView.DataSource = people;
}
private void Stuff() {
DataGridViewTextBoxColumn nameColumn = new DataGridViewTextBoxColumn();
nameColumn.DataPropertyName = "Name";
nameColumn.Name = "Name";
nameColumn.HeaderText = "Name";
nameColumn.ValueType = typeof(string);
dataGridView.Columns.Add(nameColumn);
DataGridViewButtonColumn buttonCol = new DataGridViewButtonColumn();
buttonCol.Text = "Hello";
buttonCol.Name = "Hello";
buttonCol.HeaderText = "Hello";
buttonCol.ValueType = typeof(string);
buttonCol.DataPropertyName = "Name";
dataGridView.Columns.Add(buttonCol);
DataGridViewCheckBoxColumn checkCol = new DataGridViewCheckBoxColumn();
checkCol.HeaderText = "Blah";
dataGridView.Columns.Add(checkCol);
DataGridViewComboBoxColumn comboCol = new DataGridViewComboBoxColumn();
comboCol.HeaderText = "Combo";
SexList sl = new SexList();
sl.Add(new SexDisplay(Sex.Male));
sl.Add(new SexDisplay(Sex.Female));
comboCol.DataSource = sl;
comboCol.DisplayMember = "Caption";
comboCol.ValueMember = "Sex";
comboCol.DataPropertyName = "Sex";
dataGridView.Columns.Add(comboCol);
DataGridViewLinkColumn linkCol = new DataGridViewLinkColumn();
linkCol.HeaderText = "Link";
linkCol.Text = "Bibble";
dataGridView.Columns.Add(linkCol);
linkCol.DataPropertyName = "DateOfBirth";
}
private void dataGridView_DataError(object sender, DataGridViewDataErrorEventArgs e) {
int i = 0;
}
private void dataGridView_CellClick(object sender, DataGridViewCellEventArgs e) {
int i = 0;
}
private void InitializeComponent() {
this.getData = new System.Windows.Forms.Button();
this.dataGridView = new System.Windows.Forms.DataGridView();
this.SuspendLayout();
//
// getData
//
this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.getData.Location = new System.Drawing.Point(776, 600);
this.getData.Name = "getData";
this.getData.TabIndex = 0;
this.getData.Text = "Get Data";
this.getData.Click += new System.EventHandler(this.getData_Click);
//
// dataGridView
//
this.dataGridView.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dataGridView.Location = new System.Drawing.Point(13, 13);
this.dataGridView.Name = "dataGridView";
this.dataGridView.Size = new System.Drawing.Size(837, 573);
this.dataGridView.TabIndex = 1;
this.dataGridView.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView_CellClick);
this.dataGridView.DataError += new System.Windows.Forms.DataGridViewDataErrorEventHandler(this.dataGridView_DataError);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(863, 635);
this.Controls.Add(this.dataGridView);
this.Controls.Add(this.getData);
this.ResumeLayout(false);
}
private System.Windows.Forms.Button getData;
private System.Windows.Forms.DataGridView dataGridView;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.EnableRTLMirroring();
Application.Run(new Form1());
}
}
</source>
Setup Columns for DataGridView
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Configuration; using System.Data.SqlClient; // CustomDataGridView public class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
getData.Enabled = false;
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) {
string select = "SELECT EmployeeID, FirstName, LastName, Photo, IsNull(ReportsTo,0) as ReportsTo FROM Employees";
SqlDataAdapter da = new SqlDataAdapter(select, con);
DataSet ds = new DataSet();
da.Fill(ds, "Employees");
select = "SELECT EmployeeID, FirstName + " " + LastName as Name FROM Employees union select 0,"(None)"";
da = new SqlDataAdapter(select, con);
da.Fill(ds, "Managers");
SetupColumns(ds);
dataGridView1.AutoGenerateColumns = false;
dataGridView1.DataSource = ds.Tables["Employees"];
dataGridView1.AutoResizeRows(DataGridViewAutoSizeRowsMode.AllCells);
}
}
private void SetupColumns(DataSet ds) {
DataGridViewTextBoxColumn forenameColumn = new DataGridViewTextBoxColumn();
forenameColumn.DataPropertyName = "FirstName";
forenameColumn.HeaderText = "Forename";
forenameColumn.ValueType = typeof(string);
forenameColumn.Frozen = true;
dataGridView1.Columns.Add(forenameColumn);
DataGridViewTextBoxColumn surnameColumn = new DataGridViewTextBoxColumn();
surnameColumn.DataPropertyName = "LastName";
surnameColumn.HeaderText = "Surname";
surnameColumn.Frozen = true;
surnameColumn.ValueType = typeof(string);
dataGridView1.Columns.Add(surnameColumn);
DataGridViewImageColumn photoColumn = new DataGridViewImageColumn();
photoColumn.DataPropertyName = "Photo";
photoColumn.Width = 200;
photoColumn.HeaderText = "Image";
photoColumn.ReadOnly = true;
photoColumn.ImageLayout = DataGridViewImageCellLayout.Normal;
dataGridView1.Columns.Add(photoColumn);
DataGridViewComboBoxColumn reportsToColumn = new DataGridViewComboBoxColumn();
reportsToColumn.HeaderText = "Reports To";
reportsToColumn.DataSource = ds.Tables["Managers"];
reportsToColumn.DisplayMember = "Name";
reportsToColumn.ValueMember = "EmployeeID";
reportsToColumn.DataPropertyName = "ReportsTo";
dataGridView1.Columns.Add(reportsToColumn);
}
private void InitializeComponent() {
this.dataGridView1 = new System.Windows.Forms.DataGridView();
this.getData = new System.Windows.Forms.Button();
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
//
// dataGridView1
//
this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dataGridView1.Location = new System.Drawing.Point(13, 13);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(507, 372);
this.dataGridView1.TabIndex = 0;
//
// getData
//
this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.getData.Location = new System.Drawing.Point(445, 391);
this.getData.Name = "getData";
this.getData.Size = new System.Drawing.Size(75, 23);
this.getData.TabIndex = 1;
this.getData.Text = "Get Data";
this.getData.UseVisualStyleBackColor = true;
this.getData.Click += new System.EventHandler(this.getData_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(532, 426);
this.Controls.Add(this.getData);
this.Controls.Add(this.dataGridView1);
this.Name = "Form1";
this.Text = "CustomDataGridView";
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView dataGridView1;
private System.Windows.Forms.Button getData;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
</source>
Set up DataGridView from DataColumn
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Car {
public string carPetName, carMake, carColor;
public Car(string petName, string make, string color) {
carPetName = petName;
carColor = color;
carMake = make;
}
} public class MainForm : Form {
private List<Car> arTheCars = new List<Car>();
private DataTable inventoryTable = new DataTable("Inventory");
DataView coltsOnlyView; // I only show red colts.
public MainForm() {
InitializeComponent();
arTheCars.Add(new Car("C", "BMW", "Green"));
arTheCars.Add(new Car("T", "Y", "White"));
arTheCars.Add(new Car("AAA", "Jeep", "Tan"));
arTheCars.Add(new Car("PInducer", "Caravan", "Pink"));
arTheCars.Add(new Car("F", "BMW", "Pea Soup Green"));
arTheCars.Add(new Car("B", "BMW", "Black"));
arTheCars.Add(new Car("M", "DDD", "Red"));
arTheCars.Add(new Car("S", "Colt", "Black"));
CreateDataTable();
CreateDataView();
}
private void CreateDataTable() {
DataColumn carIDColumn = new DataColumn("CarID", typeof(int));
carIDColumn.ReadOnly = true;
carIDColumn.Caption = "Car ID";
carIDColumn.AllowDBNull = false;
carIDColumn.Unique = true;
carIDColumn.AutoIncrement = true;
carIDColumn.AutoIncrementSeed = 0;
carIDColumn.AutoIncrementStep = 1;
carIDColumn.ColumnMapping = MappingType.Attribute;
DataColumn carMakeColumn = new DataColumn("Make", typeof(string));
DataColumn carColorColumn = new DataColumn("Color", typeof(string));
DataColumn carPetNameColumn = new DataColumn("PetName", typeof(string));
carPetNameColumn.Caption = "Pet Name";
inventoryTable.Columns.AddRange(new DataColumn[] { carIDColumn, carMakeColumn, carColorColumn, carPetNameColumn });
inventoryTable.PrimaryKey = new DataColumn[] { inventoryTable.Columns[0] };
foreach (Car c in arTheCars) {
DataRow newRow = inventoryTable.NewRow();
newRow["Make"] = c.carMake;
newRow["Color"] = c.carColor;
newRow["PetName"] = c.carPetName;
inventoryTable.Rows.Add(newRow);
}
carInventoryGridView.DataSource = inventoryTable;
}
private void CreateDataView() {
coltsOnlyView = new DataView(inventoryTable);
coltsOnlyView.RowFilter = "Make = "Colt"";
dataGridColtsView.DataSource = coltsOnlyView;
}
private void btnRemoveRow_Click(object sender, EventArgs e) {
try {
inventoryTable.Rows[(int.Parse(txtRowToRemove.Text))].Delete();
inventoryTable.AcceptChanges();
} catch (Exception ex) {
MessageBox.Show(ex.Message);
}
}
private void btnGetMakes_Click(object sender, EventArgs e) {
string filterStr = string.Format("Make= "{0}" ", txtMakeToGet.Text);
DataRow[] makes = inventoryTable.Select(filterStr, "PetName DESC");
if (makes.Length == 0)
MessageBox.Show("Sorry, no cars...", "Selection error!");
else {
string strMake = null;
for (int i = 0; i < makes.Length; i++) {
DataRow temp = makes[i];
strMake += temp["PetName"] + "\n";
}
MessageBox.Show(strMake, txtMakeToGet.Text + " type(s):");
}
}
private void btnChangeBeemersToColts_Click(object sender, EventArgs e) {
string filterStr = "Make="BMW"";
string strMake = null;
DataRow[] makes = inventoryTable.Select(filterStr);
for (int i = 0; i < makes.Length; i++) {
DataRow temp = makes[i];
strMake += temp["Make"] = "Colt";
makes[i] = temp;
}
}
private void ShowCarsWithIdLessThanFive() {
DataRow[] properIDs;
string newFilterStr = "ID > "5"";
properIDs = inventoryTable.Select(newFilterStr);
string strIDs = null;
for (int i = 0; i < properIDs.Length; i++) {
DataRow temp = properIDs[i];
strIDs += temp["PetName"]
+ " is ID " + temp["ID"] + "\n";
}
MessageBox.Show(strIDs, "Pet names of cars where ID > 5");
}
private void InitializeComponent() {
this.label1 = new System.Windows.Forms.Label();
this.carInventoryGridView = new System.Windows.Forms.DataGridView();
this.btnRemoveRow = new System.Windows.Forms.Button();
this.txtRowToRemove = new System.Windows.Forms.TextBox();
this.txtMakeToGet = new System.Windows.Forms.TextBox();
this.btnGetMakes = new System.Windows.Forms.Button();
this.btnChangeBeemersToColts = new System.Windows.Forms.Button();
this.dataGridColtsView = new System.Windows.Forms.DataGridView();
this.label2 = new System.Windows.Forms.Label();
((System.ruponentModel.ISupportInitialize)(this.carInventoryGridView)).BeginInit();
((System.ruponentModel.ISupportInitialize)(this.dataGridColtsView)).BeginInit();
this.SuspendLayout();
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(11, 76);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(102, 13);
this.label1.TabIndex = 0;
this.label1.Text = "All Cars in DataTable";
//
this.carInventoryGridView.Location = new System.Drawing.Point(12, 93);
this.carInventoryGridView.Name = "carInventoryGridView";
this.carInventoryGridView.Size = new System.Drawing.Size(392, 150);
this.carInventoryGridView.TabIndex = 1;
this.carInventoryGridView.Text = "dataGridView1";
//
this.btnRemoveRow.Location = new System.Drawing.Point(12, 13);
this.btnRemoveRow.Name = "btnRemoveRow";
this.btnRemoveRow.Size = new System.Drawing.Size(101, 23);
this.btnRemoveRow.TabIndex = 2;
this.btnRemoveRow.Text = "Remove Row #";
this.btnRemoveRow.Click += new System.EventHandler(this.btnRemoveRow_Click);
//
this.txtRowToRemove.Location = new System.Drawing.Point(120, 15);
this.txtRowToRemove.Name = "txtRowToRemove";
this.txtRowToRemove.Size = new System.Drawing.Size(100, 20);
this.txtRowToRemove.TabIndex = 3;
//
this.txtMakeToGet.Location = new System.Drawing.Point(120, 44);
this.txtMakeToGet.Name = "txtMakeToGet";
this.txtMakeToGet.Size = new System.Drawing.Size(100, 20);
this.txtMakeToGet.TabIndex = 5;
//
// btnGetMakes
//
this.btnGetMakes.Location = new System.Drawing.Point(12, 42);
this.btnGetMakes.Name = "btnGetMakes";
this.btnGetMakes.Size = new System.Drawing.Size(101, 23);
this.btnGetMakes.TabIndex = 4;
this.btnGetMakes.Text = "Get These Makes";
this.btnGetMakes.Click += new System.EventHandler(this.btnGetMakes_Click);
//
// btnChangeBeemersToColts
//
this.btnChangeBeemersToColts.Location = new System.Drawing.Point(245, 15);
this.btnChangeBeemersToColts.Name = "btnChangeBeemersToColts";
this.btnChangeBeemersToColts.Size = new System.Drawing.Size(159, 23);
this.btnChangeBeemersToColts.TabIndex = 6;
this.btnChangeBeemersToColts.Text = "Change BMW to Colts";
this.btnChangeBeemersToColts.Click += new System.EventHandler(this.btnChangeBeemersToColts_Click);
//
// dataGridColtsView
//
this.dataGridColtsView.Location = new System.Drawing.Point(12, 266);
this.dataGridColtsView.Name = "dataGridColtsView";
this.dataGridColtsView.Size = new System.Drawing.Size(392, 150);
this.dataGridColtsView.TabIndex = 8;
this.dataGridColtsView.Text = "dataGridView1";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(11, 249);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(76, 13);
this.label2.TabIndex = 7;
this.label2.Text = "Colts Only View";
//
// MainForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(417, 433);
this.Controls.Add(this.dataGridColtsView);
this.Controls.Add(this.label2);
this.Controls.Add(this.btnChangeBeemersToColts);
this.Controls.Add(this.txtMakeToGet);
this.Controls.Add(this.btnGetMakes);
this.Controls.Add(this.txtRowToRemove);
this.Controls.Add(this.btnRemoveRow);
this.Controls.Add(this.carInventoryGridView);
this.Controls.Add(this.label1);
this.Name = "MainForm";
this.Text = "Car Data Table";
((System.ruponentModel.ISupportInitialize)(this.carInventoryGridView)).EndInit();
((System.ruponentModel.ISupportInitialize)(this.dataGridColtsView)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.Label label1;
private System.Windows.Forms.DataGridView carInventoryGridView;
private System.Windows.Forms.Button btnRemoveRow;
private System.Windows.Forms.TextBox txtRowToRemove;
private System.Windows.Forms.TextBox txtMakeToGet;
private System.Windows.Forms.Button btnGetMakes;
private System.Windows.Forms.Button btnChangeBeemersToColts;
private System.Windows.Forms.DataGridView dataGridColtsView;
private System.Windows.Forms.Label label2;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.Run(new MainForm());
}
}
</source>
Use DataViewRowState to filter DataGridView
<source lang="csharp"> DataSourceDataView using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Configuration; using System.Data.SqlClient; // public class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void getData_Click(object sender, EventArgs e) {
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) {
string select = "SELECT * FROM products";
SqlDataAdapter da = new SqlDataAdapter(select, con);
DataSet ds = new DataSet();
da.Fill(ds, "Products");
originalData.AutoGenerateColumns = true;
originalData.DataSource = ds.Tables["Products"];
DataView dv = new DataView(ds.Tables["Products"]);
filteredData.AutoGenerateColumns = true;
filteredData.DataSource = dv;
comboBox1.SelectedIndex = 6;
comboBox1.Enabled = true;
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) {
DataViewRowState state;
switch (comboBox1.Text) {
case "Added":
state = DataViewRowState.Added;
break;
case "CurrentRows":
state = DataViewRowState.CurrentRows;
break;
case "Deleted":
state = DataViewRowState.Deleted;
break;
case "ModifiedCurrent":
state = DataViewRowState.ModifiedCurrent;
break;
case "ModifiedOriginal":
state = DataViewRowState.ModifiedOriginal;
break;
case "None":
state = DataViewRowState.None;
break;
case "OriginalRows":
state = DataViewRowState.OriginalRows;
break;
case "Unchanged":
state = DataViewRowState.Unchanged;
break;
default:
state = DataViewRowState.OriginalRows;
break;
}
try {
((DataView)filteredData.DataSource).RowStateFilter = state;
} catch (Exception ex) {
MessageBox.Show(ex.ToString());
}
}
private void InitializeComponent() {
this.originalData = new System.Windows.Forms.DataGridView();
this.getData = new System.Windows.Forms.Button();
this.ruboBox1 = new System.Windows.Forms.ruboBox();
this.filteredData = new System.Windows.Forms.DataGridView();
this.label1 = new System.Windows.Forms.Label();
((System.ruponentModel.ISupportInitialize)(this.originalData)).BeginInit();
((System.ruponentModel.ISupportInitialize)(this.filteredData)).BeginInit();
this.SuspendLayout();
//
// originalData
//
this.originalData.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.originalData.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.originalData.Location = new System.Drawing.Point(12, 12);
this.originalData.Name = "originalData";
this.originalData.Size = new System.Drawing.Size(600, 214);
this.originalData.TabIndex = 0;
//
// getData
//
this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.getData.Location = new System.Drawing.Point(536, 501);
this.getData.Name = "getData";
this.getData.Size = new System.Drawing.Size(75, 23);
this.getData.TabIndex = 1;
this.getData.Text = "Get Data";
this.getData.UseVisualStyleBackColor = true;
this.getData.Click += new System.EventHandler(this.getData_Click);
//
// comboBox1
//
this.ruboBox1.DropDownStyle = System.Windows.Forms.ruboBoxStyle.DropDownList;
this.ruboBox1.Enabled = false;
this.ruboBox1.FormattingEnabled = true;
this.ruboBox1.Items.AddRange(new object[] {
"Added",
"CurrentRows",
"Deleted",
"ModifiedCurrent",
"ModifiedOriginal",
"None",
"OriginalRows",
"Unchanged"});
this.ruboBox1.Location = new System.Drawing.Point(108, 232);
this.ruboBox1.Name = "comboBox1";
this.ruboBox1.Size = new System.Drawing.Size(502, 21);
this.ruboBox1.TabIndex = 2;
this.ruboBox1.SelectedIndexChanged += new System.EventHandler(this.ruboBox1_SelectedIndexChanged);
//
// filteredData
//
this.filteredData.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.filteredData.Location = new System.Drawing.Point(12, 259);
this.filteredData.Name = "filteredData";
this.filteredData.Size = new System.Drawing.Size(598, 236);
this.filteredData.TabIndex = 3;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(13, 233);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(29, 13);
this.label1.TabIndex = 4;
this.label1.Text = "Filter";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(624, 536);
this.Controls.Add(this.label1);
this.Controls.Add(this.filteredData);
this.Controls.Add(this.ruboBox1);
this.Controls.Add(this.getData);
this.Controls.Add(this.originalData);
this.Name = "Form1";
this.Text = "04_DataSourceDataView";
((System.ruponentModel.ISupportInitialize)(this.originalData)).EndInit();
((System.ruponentModel.ISupportInitialize)(this.filteredData)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.DataGridView originalData;
private System.Windows.Forms.Button getData;
private System.Windows.Forms.ruboBox comboBox1;
private System.Windows.Forms.DataGridView filteredData;
private System.Windows.Forms.Label label1;
[STAThread]
static void Main() {
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
</source>
