Csharp/C Sharp by API/System.Windows.Forms/DataGrid

Материал из .Net Framework эксперт
Версия от 12:09, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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DataGrid.DataSource

 
using System;
using System.Diagnostics;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class Form1 : System.Windows.Forms.Form {
    internal System.Windows.Forms.DataGrid DataGrid1;
    internal System.Windows.Forms.Button btnRunQuery;
    private System.Windows.Forms.Button btnRunQuery2;
    public Form1() {
        this.DataGrid1 = new System.Windows.Forms.DataGrid();
        this.btnRunQuery = new System.Windows.Forms.Button();
        this.btnRunQuery2 = new System.Windows.Forms.Button();
        ((System.ruponentModel.ISupportInitialize)(this.DataGrid1)).BeginInit();
        this.SuspendLayout();
        this.DataGrid1.DataMember = "";
        this.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
        this.DataGrid1.Location = new System.Drawing.Point(8, 8);
        this.DataGrid1.Size = new System.Drawing.Size(280, 200);
        this.btnRunQuery.Location = new System.Drawing.Point(8, 224);
        this.btnRunQuery.Size = new System.Drawing.Size(80, 24);
        this.btnRunQuery.Text = "Run Query 1";
        this.btnRunQuery.Click += new System.EventHandler(this.btnRunQuery_Click);
        this.btnRunQuery2.Location = new System.Drawing.Point(104, 224);
        this.btnRunQuery2.Size = new System.Drawing.Size(80, 24);
        this.btnRunQuery2.Text = "Run Query 2";
        this.btnRunQuery2.Click += new System.EventHandler(this.btnRunQuery2_Click);
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(292, 273);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.btnRunQuery2,
                                                                          this.DataGrid1,
                                                                          this.btnRunQuery});
        ((System.ruponentModel.ISupportInitialize)(this.DataGrid1)).EndInit();
        this.ResumeLayout(false);
    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    private void btnRunQuery_Click(object sender, System.EventArgs e) {
        try {
            SqlConnection cn = new SqlConnection("data source=.;database=biblio;uid=admin;pwd=pw");
            SqlDataAdapter da = new SqlDataAdapter("Select top 50 Author, Year_born from Authors Where Year_born is not null", cn);
            DataSet ds = new DataSet();
            da.Fill(ds, "Authors");
            DataGrid1.DataSource = ds.Tables["Authors"];
        } catch (SqlException ex) {
            Debug.WriteLine(ex.ToString());
        }
    }
    private void btnRunQuery2_Click(object sender, System.EventArgs e) {
        try {
            SqlConnection cn = new SqlConnection("data source=.;database=biblio;uid=admin;pwd=pw");
            SqlDataAdapter da = new SqlDataAdapter("Select Title, Price from Titles where Title like "Hit%"", cn);
            DataSet ds = new DataSet();
            da.Fill(ds, "Titles and Price");
            DataGrid1.DataSource = ds.Tables["Titles and Price"];
        } catch (SqlException ex) {
            Debug.WriteLine(ex.ToString());
        }
    }
}


DataGrid.SetDataBinding

 
using System;
using System.Configuration;
using System.Data;
using System.Data.rumon;
using System.Data.SqlClient;
using System.Windows.Forms;
class Form1 : Form {
    public Form1() {
        InitializeComponent();
    }
    private void getData_Click(object sender, EventArgs e) {
        string orders = "SELECT * FROM Orders";
        string customers = "SELECT * FROM Customers";
        using (SqlConnection con = new SqlConnection("northwind Connection String")) {
            SqlDataAdapter da = new SqlDataAdapter(orders, con);
            DataSet ds = new DataSet();
            da.Fill(ds, "Orders");
            da = new SqlDataAdapter(customers, con);
            da.Fill(ds, "Customers");
            ds.Relations.Add("CustomerOrders",
                ds.Tables["Customers"].Columns["CustomerID"],
                ds.Tables["Orders"].Columns["CustomerID"]);
            DataViewManager dvm = new DataViewManager(ds);
            dvm.DataViewSettings["Customers"].RowFilter = "Country="UK"";
            dataGrid.SetDataBinding(dvm, "Customers");
        }
    }
    private void InitializeComponent() {
        this.getData = new System.Windows.Forms.Button();
        this.dataGrid = new System.Windows.Forms.DataGrid();
        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(684, 558);
        this.getData.Name = "getData";
        this.getData.TabIndex = 0;
        this.getData.Text = "Get Data";
        this.getData.Click += new System.EventHandler(this.getData_Click);
        // 
        // dataGrid
        // 
        this.dataGrid.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.dataGrid.Location = new System.Drawing.Point(13, 13);
        this.dataGrid.Name = "dataGrid";
        this.dataGrid.Size = new System.Drawing.Size(745, 534);
        this.dataGrid.TabIndex = 1;
        // 
        // Form1
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(771, 593);
        this.Controls.Add(this.dataGrid);
        this.Controls.Add(this.getData);
        this.Name = "Form1";
        this.Text = "Form1";
        this.ResumeLayout(false);
    }

    private System.Windows.Forms.Button getData;
    private System.Windows.Forms.DataGrid dataGrid;
    [STAThread]
    static void Main() {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }
}