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DataGrid Constructor

Initializes a new instance of the DataGrid class.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public DataGrid ()
public DataGrid ()
public function DataGrid ()

Use this constructor to create and initialize a new instance of the DataGrid class.

The following code example demonstrates how to create and initialize a new instance of the DataGrid class.


<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
   <script runat="server">

      ICollection CreateDataSource() 
      {
      
         // Create sample data for the DataGrid control.
         DataTable dt = new DataTable();
         DataRow dr;
 
         // Define the columns of the table.
         dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
         dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
         dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
 
         // Populate the table with sample values.
         for (int i = 0; i < 9; i++) 
         {
            dr = dt.NewRow();
 
            dr[0] = i;
            dr[1] = "Item " + i.ToString();
            dr[2] = 1.23 * (i + 1);
 
            dt.Rows.Add(dr);
         }
 
         DataView dv = new DataView(dt);
         return dv;

      }
 
      void Page_Load(Object sender, EventArgs e) 
      {

         // Create a DataGrid control.
         DataGrid ItemsGrid = new DataGrid();

         // Set the properties of the DataGrid.
         ItemsGrid.ID = "ItemsGrid";
         ItemsGrid.BorderColor = System.Drawing.Color.Black;
         ItemsGrid.CellPadding = 3;
         ItemsGrid.AutoGenerateColumns = false;

         // Set the styles for the DataGrid.
         ItemsGrid.HeaderStyle.BackColor = 
             System.Drawing.Color.FromArgb(0x0000aaaa);

         // Create the columns for the DataGrid control. The DataGrid
         // columns are dynamically generated. Therefore, the columns   
         // must be re-created each time the page is refreshed.
         
         // Create and add the columns to the collection.
         ItemsGrid.Columns.Add(CreateBoundColumn("IntegerValue", "Item"));
         ItemsGrid.Columns.Add(
             CreateBoundColumn("StringValue", "Description"));
         ItemsGrid.Columns.Add(
             CreateBoundColumn("CurrencyValue", "Price", "{0:c}", 
             HorizontalAlign.Right));
         ItemsGrid.Columns.Add(
             CreateLinkColumn("http://www.microsoft.com", "_self", 
             "Microsoft", "Related link"));
        
         // Specify the data source and bind it to the control.
         ItemsGrid.DataSource = CreateDataSource();
         ItemsGrid.DataBind();

         // Add the DataGrid control to the Controls collection of 
         // the PlaceHolder control.
         Place.Controls.Add(ItemsGrid);

      }

      BoundColumn CreateBoundColumn(String DataFieldValue, 
          String HeaderTextValue)
      {

         // This version of the CreateBoundColumn method sets only the
         // DataField and HeaderText properties.

         // Create a BoundColumn.
         BoundColumn column = new BoundColumn();

         // Set the properties of the BoundColumn.
         column.DataField = DataFieldValue;
         column.HeaderText = HeaderTextValue;

         return column;

      }

      BoundColumn CreateBoundColumn(String DataFieldValue, 
          String HeaderTextValue, String FormatValue, 
          HorizontalAlign AlignValue)
      {

         // This version of CreateBoundColumn method sets the DataField,
         // HeaderText, and DataFormatString properties. It also sets the 
         // HorizontalAlign property of the ItemStyle property of the column. 

         // Create a BoundColumn using the overloaded CreateBoundColumn method.
         BoundColumn column = CreateBoundColumn(DataFieldValue, HeaderTextValue);

         // Set the properties of the BoundColumn.
         column.DataFormatString = FormatValue;
         column.ItemStyle.HorizontalAlign = AlignValue;

         return column;

      }

      HyperLinkColumn CreateLinkColumn(String NavUrlValue, 
          String TargetValue, String TextValue, String HeaderTextValue)
      {

         // Create a BoundColumn.
         HyperLinkColumn column = new HyperLinkColumn();

         // Set the properties of the ButtonColumn.
         column.NavigateUrl = NavUrlValue;
         column.Target = TargetValue;
         column.Text = TextValue;
         column.HeaderText = HeaderTextValue;

         return column;

      }

   </script>
 
<body>
 
   <form runat=server>
 
      <h3>DataGrid Constructor Example</h3>
 
      <b>Product List</b>

      <asp:PlaceHolder id="Place"
           runat="server"/>
 
   </form>
 
</body>
</html>


Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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