Csharp/CSharp Tutorial/ADO.Net/DataTableMapping

ColumnMappings

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Data.rumon;
public class DataColumnMappingDemo : System.Windows.Forms.Form
{
  private System.Windows.Forms.DataGrid dataGrid1;
  private System.ruponentModel.Container components = null;
  public DataColumnMappingDemo()
  {
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.dataGrid1 = new System.Windows.Forms.DataGrid();
    ((System.ruponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
    this.SuspendLayout();
    // 
    // dataGrid1
    // 
    this.dataGrid1.DataMember = "";
    this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
    this.dataGrid1.Location = new System.Drawing.Point(8, 16);
    this.dataGrid1.Name = "dataGrid1";
    this.dataGrid1.Size = new System.Drawing.Size(432, 248);
    this.dataGrid1.TabIndex = 0;
    // 
    // DataColumnMappingDemo
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(448, 273);
    this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                    this.dataGrid1});
    this.Name = "DataColumnMappingDemo";
    this.Text = "DataColumnMappingDemo";
    this.Load += new System.EventHandler(this.DataColumnMappingDemo_Load);
    ((System.ruponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new DataColumnMappingDemo());
  }
  private void DataColumnMappingDemo_Load(object sender, System.EventArgs e)
  {
        string ConnectionString ="Integrated Security=SSPI;Initial Catalog=Northwind;Data Source=localhost;";
        SqlConnection conn = new SqlConnection(ConnectionString);
        conn.Open();
        DataTableMapping myMapping = new DataTableMapping("Table", "Orders");
        SqlDataAdapter adapter = new SqlDataAdapter("Select * From Orders", conn);
        adapter.TableMappings.Add(myMapping);
        myMapping.ColumnMappings.Add(new DataColumnMapping("OrderID", "mapID"));
        
        DataSet ds = new DataSet();
        adapter.Fill(ds);
        Console.WriteLine( ds.Tables["Orders"].Rows[0]["mapID"].ToString());
        dataGrid1.DataSource = ds.DefaultViewManager;
  }
}

DataTableMapping and DataGrid

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Data.rumon;
public class DataTableMappingDemo : System.Windows.Forms.Form
{
  private System.Windows.Forms.DataGrid dataGrid1;
  private System.ruponentModel.Container components = null;
  public DataTableMappingDemo()
  {
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.dataGrid1 = new System.Windows.Forms.DataGrid();
    ((System.ruponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
    this.SuspendLayout();
    // 
    // dataGrid1
    // 
    this.dataGrid1.DataMember = "";
    this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
    this.dataGrid1.Location = new System.Drawing.Point(8, 16);
    this.dataGrid1.Name = "dataGrid1";
    this.dataGrid1.Size = new System.Drawing.Size(432, 248);
    this.dataGrid1.TabIndex = 0;
    // 
    // DataTableMapping
    // 
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(448, 273);
    this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                    this.dataGrid1});
    this.Name = "DataTableMapping";
    this.Text = "DataTableMapping";
    this.Load += new System.EventHandler(this.DataTableMapping_Load);
    ((System.ruponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new DataTableMappingDemo());
  }
  private void DataTableMapping_Load(object sender, System.EventArgs e)
  {
        string ConnectionString ="server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;";
        SqlConnection conn = new SqlConnection(ConnectionString);
        conn.Open();
        DataTableMapping myMapping = new DataTableMapping("Employee", "mapEmployee");
        SqlDataAdapter adapter = new SqlDataAdapter("Select * From Employee", conn);
        adapter.TableMappings.Add(myMapping);
        DataSet ds = new DataSet();
        adapter.Fill(ds, "mapEmployee");
        dataGrid1.DataSource = ds.DefaultViewManager;
  }
}

Table mapping

using System;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Data.rumon;
using System.Windows.Forms;
class MainClass
{
  static void Main(string[] args)
  {
    string ConnectionString ="server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;";
    SqlConnection conn = new SqlConnection(ConnectionString);
    conn.Open();
    try
    {
      DataTableMapping myMapping = new DataTableMapping("Employee", "mapEmployee");
      SqlDataAdapter adapter = new SqlDataAdapter("Select * From Employee",  conn);
      adapter.TableMappings.Add(myMapping);
      DataSet ds = new DataSet();
      adapter.Fill(ds, "mapEmployee");
      Console.WriteLine(ds.Tables[0].ToString());
    }
    catch(SqlException ex)
    {
      Console.WriteLine(ex.Message.ToString());
    }
  }
}