Csharp/CSharp Tutorial/GUI Windows Forms/DataGridView
Содержание
Calculation with 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;
class SimpleSpreadForm : Form
{
public SimpleSpreadForm()
{
InitializeComponent();
m_Grid.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
}
private void OnFormLoad(object sender, EventArgs e)
{
int start = (int)"A";
for (int i = 0; i < 26; i++)
{
string colName = ((char)(i + start)).ToString();
int index = m_Grid.Columns.Add(colName, colName);
m_Grid.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;
m_Grid.Columns[i].Width = 75;
}
for (int i = 0; i < 50; i++)
{
m_Grid.Rows.Add();
}
}
private void OnColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
m_Grid.ClearSelection();
foreach (DataGridViewRow row in m_Grid.Rows)
{
row.Cells[e.ColumnIndex].Selected = true;
}
}
private void OnRowAdded(object sender, DataGridViewRowsAddedEventArgs e)
{
m_Grid.Rows[e.RowIndex].HeaderCell.Value = e.RowIndex.ToString();
}
private void OnSumCells(object sender, EventArgs e)
{
DataGridViewSelectedCellCollection selCells = m_Grid.SelectedCells;
if (selCells.Count < 2)
return;
Dictionary<int, int> rowSum = new Dictionary<int, int>();
Dictionary<int, int> colSum = new Dictionary<int, int>();
foreach (DataGridViewCell cell in selCells)
{
if (!rowSum.ContainsKey(cell.RowIndex))
{
if (cell.Value != null && cell.Value.ToString() != string.Empty)
{
rowSum[cell.RowIndex] = int.Parse((string)cell.Value);
}
}
}
}
private void InitializeComponent()
{
this.m_Grid = new System.Windows.Forms.DataGridView();
this.toolStrip1 = new System.Windows.Forms.ToolStrip();
this.m_SumToolStripButton = new System.Windows.Forms.ToolStripButton();
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).BeginInit();
this.toolStrip1.SuspendLayout();
this.SuspendLayout();
//
// m_Grid
//
this.m_Grid.Dock = System.Windows.Forms.DockStyle.Fill;
this.m_Grid.Location = new System.Drawing.Point(0, 25);
this.m_Grid.Name = "m_Grid";
this.m_Grid.Size = new System.Drawing.Size(727, 467);
this.m_Grid.TabIndex = 0;
this.m_Grid.Text = "dataGridView1";
this.m_Grid.ColumnHeaderMouseClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.OnColumnHeaderMouseClick);
this.m_Grid.RowsAdded += new System.Windows.Forms.DataGridViewRowsAddedEventHandler(this.OnRowAdded);
//
// toolStrip1
//
this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
this.m_SumToolStripButton});
this.toolStrip1.Location = new System.Drawing.Point(0, 0);
this.toolStrip1.Name = "toolStrip1";
this.toolStrip1.Size = new System.Drawing.Size(727, 25);
this.toolStrip1.TabIndex = 1;
this.toolStrip1.Text = "toolStrip1";
//
// m_SumToolStripButton
//
this.m_SumToolStripButton.ImageTransparentColor = System.Drawing.Color.Magenta;
this.m_SumToolStripButton.Name = "m_SumToolStripButton";
this.m_SumToolStripButton.Text = "Sum";
this.m_SumToolStripButton.Click += new System.EventHandler(this.OnSumCells);
//
// SimpleSpreadForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(727, 492);
this.Controls.Add(this.m_Grid);
this.Controls.Add(this.toolStrip1);
this.Name = "SimpleSpreadForm";
this.Text = "Form1";
this.Load += new System.EventHandler(this.OnFormLoad);
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).EndInit();
this.toolStrip1.ResumeLayout(false);
this.ResumeLayout(false);
this.PerformLayout();
}
private System.Windows.Forms.DataGridView m_Grid;
private System.Windows.Forms.ToolStrip toolStrip1;
private System.Windows.Forms.ToolStripButton m_SumToolStripButton;
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new SimpleSpreadForm());
}
}</source>
Custom Header Cells
<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;
class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void OnFormLoad(object sender, EventArgs e)
{
m_Grid.ColumnCount = 5;
m_Grid.Rows.Add(5);
}
private void OnCellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
if (e.RowIndex == -1)
{
e.Graphics.FillRectangle(Brushes.Aqua, e.CellBounds);
e.Handled = true;
}
if (e.ColumnIndex == -1)
{
}
}
private void InitializeComponent()
{
this.m_Grid = new System.Windows.Forms.DataGridView();
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).BeginInit();
this.SuspendLayout();
//
this.m_Grid.Dock = System.Windows.Forms.DockStyle.Fill;
this.m_Grid.Location = new System.Drawing.Point(0, 0);
this.m_Grid.Name = "m_Grid";
this.m_Grid.Size = new System.Drawing.Size(642, 347);
this.m_Grid.TabIndex = 0;
this.m_Grid.Text = "dataGridView1";
this.m_Grid.CellPainting += new System.Windows.Forms.DataGridViewCellPaintingEventHandler(this.OnCellPainting);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(642, 347);
this.Controls.Add(this.m_Grid);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.OnFormLoad);
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView m_Grid;
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}</source>
Fill Columns
<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;
class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.dataGridView1 = new System.Windows.Forms.DataGridView();
this.Column1 = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.Column2 = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.Column3 = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.Column4 = new System.Windows.Forms.DataGridViewTextBoxColumn();
this.Column5 = new System.Windows.Forms.DataGridViewTextBoxColumn();
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
this.SuspendLayout();
//
this.dataGridView1.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
this.Column1,
this.Column2,
this.Column3,
this.Column4,
this.Column5});
this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
this.dataGridView1.Location = new System.Drawing.Point(0, 0);
this.dataGridView1.Name = "dataGridView1";
this.dataGridView1.Size = new System.Drawing.Size(292, 266);
this.dataGridView1.TabIndex = 0;
this.dataGridView1.Text = "dataGridView1";
//
this.Column1.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
this.Column1.FillWeight = 253.8071F;
this.Column1.HeaderText = "Column1";
this.Column1.MinimumWidth = 100;
this.Column1.Name = "Column1";
//
this.Column2.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
this.Column2.FillWeight = 61.54822F;
this.Column2.HeaderText = "Column2";
this.Column2.MinimumWidth = 100;
this.Column2.Name = "Column2";
//
this.Column3.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
this.Column3.FillWeight = 61.54822F;
this.Column3.HeaderText = "Column3";
this.Column3.MinimumWidth = 100;
this.Column3.Name = "Column3";
//
this.Column4.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
this.Column4.FillWeight = 61.54822F;
this.Column4.HeaderText = "Column4";
this.Column4.MinimumWidth = 100;
this.Column4.Name = "Column4";
//
// Column5
//
this.Column5.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill;
this.Column5.FillWeight = 61.54822F;
this.Column5.HeaderText = "Column5";
this.Column5.Name = "Column5";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.dataGridView1);
this.Name = "Form1";
this.Text = "Form1";
((System.ruponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView dataGridView1;
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn1;
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn2;
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn3;
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn4;
private System.Windows.Forms.DataGridViewTextBoxColumn dataGridViewTextBoxColumn5;
private System.Windows.Forms.DataGridViewTextBoxColumn Column1;
private System.Windows.Forms.DataGridViewTextBoxColumn Column2;
private System.Windows.Forms.DataGridViewTextBoxColumn Column3;
private System.Windows.Forms.DataGridViewTextBoxColumn Column4;
private System.Windows.Forms.DataGridViewTextBoxColumn Column5;
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}</source>
Programmatic Grid
<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;
class ProgrammaticGridForm: Form
{
public ProgrammaticGridForm()
{
InitializeComponent();
}
private void OnAddCols(object sender, EventArgs e)
{
m_Grid.Columns.Add("MyColumnName", "MyColumnHeaderText");
m_Grid.Columns.Add("MyOtherColumnName", "MyOtherColumnHeaderText");
}
private void OnAddMore(object sender, EventArgs e)
{
m_Grid.ColumnCount = 5;
m_Grid.Columns[2].Name = "Col3";
m_Grid.Columns[2].HeaderText = "Col3";
m_Grid.Columns[3].Name = "Col4";
m_Grid.Columns[3].HeaderText = "Col4";
m_Grid.Columns[4].Name = "Col5";
m_Grid.Columns[4].HeaderText = "Col5";
}
private void OnRemove(object sender, EventArgs e)
{
m_Grid.ColumnCount = 3;
}
private void OnAddRows(object sender, EventArgs e)
{
m_Grid.Rows.Add(20);
}
private void OnAddHeterows(object sender, EventArgs e)
{
m_Grid.ColumnCount = 5;
DataGridViewRow heterow = new DataGridViewRow();
DataGridViewComboBoxCell comboCell = new DataGridViewComboBoxCell();
comboCell.Items.Add("Black");
comboCell.Items.Add("White");
comboCell.Value = "White";
heterow.Cells.Add(comboCell);
for (int i = 0; i < 4; i++)
{
heterow.Cells.Add(new DataGridViewTextBoxCell());
}
m_Grid.Rows.Add(heterow);
}
private void OnAddAnotherHeterow(object sender, EventArgs e)
{
DataGridViewRow heterow = new DataGridViewRow();
heterow.CreateCells(m_Grid);
heterow.Cells.RemoveAt(0);
heterow.Cells.Insert(0, new DataGridViewComboBoxCell());
m_Grid.Rows.Add(heterow);
}
private void InitializeComponent()
{
this.m_AddColsToGridButton = new System.Windows.Forms.Button();
this.m_AddMoreColsWithColCountButton = new System.Windows.Forms.Button();
this.m_RemoveColsButton = new System.Windows.Forms.Button();
this.m_Grid = new System.Windows.Forms.DataGridView();
this.m_AddRowsButton = new System.Windows.Forms.Button();
this.m_AddHeterows = new System.Windows.Forms.Button();
this.m_AddAnotherHeterowButton = new System.Windows.Forms.Button();
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).BeginInit();
this.SuspendLayout();
//
// m_AddColsToGridButton
//
this.m_AddColsToGridButton.Location = new System.Drawing.Point(13, 13);
this.m_AddColsToGridButton.Name = "m_AddColsToGridButton";
this.m_AddColsToGridButton.Size = new System.Drawing.Size(131, 23);
this.m_AddColsToGridButton.TabIndex = 0;
this.m_AddColsToGridButton.Text = "Add Columns To Grid";
this.m_AddColsToGridButton.Click += new System.EventHandler(this.OnAddCols);
//
// m_AddMoreColsWithColCountButton
//
this.m_AddMoreColsWithColCountButton.Location = new System.Drawing.Point(168, 13);
this.m_AddMoreColsWithColCountButton.Name = "m_AddMoreColsWithColCountButton";
this.m_AddMoreColsWithColCountButton.Size = new System.Drawing.Size(208, 23);
this.m_AddMoreColsWithColCountButton.TabIndex = 1;
this.m_AddMoreColsWithColCountButton.Text = "Add More Columns with ColumnCount";
this.m_AddMoreColsWithColCountButton.Click += new System.EventHandler(this.OnAddMore);
//
// m_RemoveColsButton
//
this.m_RemoveColsButton.Location = new System.Drawing.Point(391, 12);
this.m_RemoveColsButton.Name = "m_RemoveColsButton";
this.m_RemoveColsButton.Size = new System.Drawing.Size(196, 23);
this.m_RemoveColsButton.TabIndex = 2;
this.m_RemoveColsButton.Text = "Remove Columns with ColumnCount";
this.m_RemoveColsButton.Click += new System.EventHandler(this.OnRemove);
//
// m_Grid
//
this.m_Grid.Location = new System.Drawing.Point(12, 85);
this.m_Grid.Name = "m_Grid";
this.m_Grid.Size = new System.Drawing.Size(574, 265);
this.m_Grid.TabIndex = 3;
//
// m_AddRowsButton
//
this.m_AddRowsButton.Location = new System.Drawing.Point(13, 43);
this.m_AddRowsButton.Name = "m_AddRowsButton";
this.m_AddRowsButton.Size = new System.Drawing.Size(131, 23);
this.m_AddRowsButton.TabIndex = 4;
this.m_AddRowsButton.Text = "Add Rows";
this.m_AddRowsButton.Click += new System.EventHandler(this.OnAddRows);
//
// m_AddHeterows
//
this.m_AddHeterows.Location = new System.Drawing.Point(168, 42);
this.m_AddHeterows.Name = "m_AddHeterows";
this.m_AddHeterows.Size = new System.Drawing.Size(138, 23);
this.m_AddHeterows.TabIndex = 5;
this.m_AddHeterows.Text = "Add Heterows";
this.m_AddHeterows.Click += new System.EventHandler(this.OnAddHeterows);
//
// m_AddAnotherHeterowButton
//
this.m_AddAnotherHeterowButton.Location = new System.Drawing.Point(346, 41);
this.m_AddAnotherHeterowButton.Name = "m_AddAnotherHeterowButton";
this.m_AddAnotherHeterowButton.Size = new System.Drawing.Size(159, 23);
this.m_AddAnotherHeterowButton.TabIndex = 6;
this.m_AddAnotherHeterowButton.Text = "Add Another Heterow";
this.m_AddAnotherHeterowButton.Click += new System.EventHandler(this.OnAddAnotherHeterow);
//
// ProgrammaticGridForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(650, 362);
this.Controls.Add(this.m_AddAnotherHeterowButton);
this.Controls.Add(this.m_AddHeterows);
this.Controls.Add(this.m_AddRowsButton);
this.Controls.Add(this.m_Grid);
this.Controls.Add(this.m_RemoveColsButton);
this.Controls.Add(this.m_AddMoreColsWithColCountButton);
this.Controls.Add(this.m_AddColsToGridButton);
this.Name = "ProgrammaticGridForm";
this.Text = "Programmatic Grid";
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.Button m_AddColsToGridButton;
private System.Windows.Forms.Button m_AddMoreColsWithColCountButton;
private System.Windows.Forms.Button m_RemoveColsButton;
private System.Windows.Forms.DataGridView m_Grid;
private System.Windows.Forms.Button m_AddRowsButton;
private System.Windows.Forms.Button m_AddHeterows;
private System.Windows.Forms.Button m_AddAnotherHeterowButton;
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new ProgrammaticGridForm());
}
}</source>
Simple DataGridView
<source lang="csharp">using System; using System.Drawing; using System.Windows.Forms; class MyClass : Form {
[STAThread]
public static void Main()
{
Application.Run(new MyClass());
}
public MyClass()
{
Text = "Simple DataGridView";
DataGridView grid = new DataGridView();
grid.Parent = this;
grid.AutoSize = true;
grid.Dock = DockStyle.Fill;
grid.ColumnCount = 3;
grid.Columns[0].HeaderText = "First Name";
grid.Columns[1].HeaderText = "Last Name";
grid.Columns[2].HeaderText = "Email Address";
}
}</source>
Virtual Data
<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;
class VirtualModeForm : Form
{
private List<DataObject> m_Data = new List<DataObject>();
private List<bool> m_Visited = new List<bool>();
public VirtualModeForm()
{
InitializeComponent();
m_Grid.CellValueNeeded += OnCellValueNeeded;
m_GetVisitedCountButton.Click += OnGetVisitedCount;
InitData();
InitGrid();
}
private void InitData()
{
for (int i = 0; i < 100; i++)
{
m_Visited.Add(false);
DataObject obj = new DataObject();
obj.Id = i;
obj.Val = 2 * i;
m_Data.Add(obj);
}
}
private void InitGrid()
{
m_Grid.VirtualMode = true;
m_Grid.ReadOnly = true;
m_Grid.AllowUserToAddRows = false;
m_Grid.AllowUserToDeleteRows = false;
m_Grid.ColumnCount = 3;
m_Grid.Rows.Add();
m_Grid.Rows.AddCopies(0, 100);
}
private void OnCellValueNeeded(object sender,
DataGridViewCellValueEventArgs e)
{
m_Visited[e.RowIndex] = true;
if (e.ColumnIndex == 0)
{
e.Value = m_Data[e.RowIndex].Id;
}
else if (e.ColumnIndex == 1)
{
e.Value = m_Data[e.RowIndex].Val;
}
else if (e.ColumnIndex == 2)
{
Random rand = new Random();
e.Value = rand.Next();
}
}
private void OnGetVisitedCount(object sender, EventArgs e)
{
int count = 0;
foreach (bool b in m_Visited)
{
if (b) count++;
}
MessageBox.Show(count.ToString());
}
private void InitializeComponent()
{
this.m_Grid = new System.Windows.Forms.DataGridView();
this.m_GetVisitedCountButton = new System.Windows.Forms.Button();
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).BeginInit();
this.SuspendLayout();
//
// m_Grid
//
this.m_Grid.Location = new System.Drawing.Point(12, 12);
this.m_Grid.Name = "m_Grid";
this.m_Grid.Size = new System.Drawing.Size(327, 252);
this.m_Grid.TabIndex = 0;
this.m_Grid.Text = "dataGridView1";
//
// m_GetVisitedCountButton
//
this.m_GetVisitedCountButton.Location = new System.Drawing.Point(12, 280);
this.m_GetVisitedCountButton.Name = "m_GetVisitedCountButton";
this.m_GetVisitedCountButton.Size = new System.Drawing.Size(231, 23);
this.m_GetVisitedCountButton.TabIndex = 1;
this.m_GetVisitedCountButton.Text = "Get Count of Visited Cells";
//
// VirtualModeForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(365, 346);
this.Controls.Add(this.m_GetVisitedCountButton);
this.Controls.Add(this.m_Grid);
this.Name = "VirtualModeForm";
this.Text = "Form1";
((System.ruponentModel.ISupportInitialize)(this.m_Grid)).EndInit();
this.ResumeLayout(false);
}
private System.Windows.Forms.DataGridView m_Grid;
private System.Windows.Forms.Button m_GetVisitedCountButton;
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new VirtualModeForm());
}
}
public class DataObject
{
private int m_Id;
private int m_Val;
public int Val
{
get { return m_Val; }
set { m_Val = value; }
}
public int Id
{
get { return m_Id; }
set { m_Id = value; }
}
}</source>
