Export (0) Print
Expand All

DataGrid.ItemCreated Event

Occurs on the server when an item in the DataGrid control is created.

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

public event DataGridItemEventHandler ItemCreated
/** @event */
public void add_ItemCreated (DataGridItemEventHandler value)

/** @event */
public void remove_ItemCreated (DataGridItemEventHandler value)

JScript supports the use of events, but not the declaration of new ones.

The ItemCreated event is raised when an item in the DataGrid control is created, both during round-trips and at the time data is bound to the control.

The ItemCreated event is commonly used to control the content and appearance of a row in the DataGrid control.

For more information about handling events, see Consuming Events.

The following code example demonstrates how to specify and code a handler for the ItemCreated event to display the order that items are created in the DataGrid control.

<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
 
<html>
<script language="C#" runat="server">
 
   DataTable Cart;
   DataView CartView;
 
   ICollection CreateDataSource() 
   {
      DataTable dt = new DataTable();
      DataRow dr;
 
      dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
      dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
      dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
 
      for (int i = 0; i < 10; 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) 
   {
 
      if (!IsPostBack) 
      {
         // Need to load this data only once.
         ItemsGrid.DataSource = CreateDataSource();
         ItemsGrid.DataBind();
      }
 
   }
 
   void Item_Created(Object sender, DataGridItemEventArgs e) 
   {
 
      Label1.Text = Label1.Text + " " + e.Item.ItemIndex;
 
   }
 
</script>
 
<body>
 
   <form runat=server>

      <h3>DataGrid ItemCreated Example</h3>
 
      <asp:DataGrid id="ItemsGrid" runat="server"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           ShowFooter="true"
           OnItemCreated="Item_Created"
           AutoGenerateColumns="true">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <FooterStyle BackColor="#00aaaa">
         </FooterStyle>
   
      </asp:DataGrid>
 
      <br>
 
      <asp:Label id="Label1" 
           Text="Order of items created: " 
           runat="server"/>

      <br>

      <asp:Label id="Label2" 
           Text="Note: The -1's refer to the header and footer." 
           runat="server"/>
 
   </form>
 
</body>
</html>
   


<%@ 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<=10; 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)
      { 
 
         // Load sample data only once, when the page is first loaded.
         if (!IsPostBack)
         { 
         
            ItemsGrid.DataSource = CreateDataSource();
            ItemsGrid.DataBind();
         
         }

      }
 
      void Item_Created(Object sender, DataGridItemEventArgs e) 
      {
 
         // Customize the footer section with an image.
         if(e.Item.ItemType == ListItemType.Footer)
         {         
 
           // Create an Image control.
           System.Web.UI.WebControls.Image NewImageControl = new System.Web.UI.WebControls.Image();

           // Set the properties of the Image control.
           NewImageControl.ImageUrl = "Image1.jpg"; 
           NewImageControl.AlternateText = "Image 1";
           
           // Add the Image control to the Controls collection of the 
           // cell representing the third column in the DataGrid.
           e.Item.Cells[2].Controls.Add(NewImageControl);

         }         
 
      }
 
</script>
 
<body>
 
   <form runat=server>

      <h3>DataGrid ItemCreated Example</h3>
 
      <asp:DataGrid id="ItemsGrid" runat="server"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           ShowFooter="true"
           OnItemCreated="Item_Created">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <FooterStyle BackColor="#00aaaa">
         </FooterStyle>
   
      </asp:DataGrid>

   </form>
 
</body>
</html>



<%@ 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<=10; 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)
      { 
 
         // Manually register the event-handling method for the ItemCreated  
         // event of the DataGrid control.
         ItemsGrid.ItemCreated += 
             new DataGridItemEventHandler(this.Item_Created);

         // Load sample data only once, when the page is first loaded.
         if (!IsPostBack)
         { 
         
            ItemsGrid.DataSource = CreateDataSource();
            ItemsGrid.DataBind();
         
         }

      }
 
      void Item_Created(Object sender, DataGridItemEventArgs e) 
      {
 
         // Customize the footer section with an image.
         if(e.Item.ItemType == ListItemType.Footer)
         {         
 
           // Create an Image control.
           System.Web.UI.WebControls.Image NewImageControl = new System.Web.UI.WebControls.Image();

           // Set the properties of the Image control.
           NewImageControl.ImageUrl = "Image1.jpg"; 
           NewImageControl.AlternateText = "Image 1";

           // Add the Image control to the Controls collection of the 
           // cell representing the third column in the DataGrid.
           e.Item.Cells[2].Controls.Add(NewImageControl);

         }         
 
      }
 
</script>
 
<body>
 
   <form runat=server>

      <h3>DataGrid ItemCreated Example</h3>
 
      <asp:DataGrid id="ItemsGrid" runat="server"
           BorderColor="black"
           BorderWidth="1"
           CellPadding="3"
           ShowFooter="true">

         <HeaderStyle BackColor="#00aaaa">
         </HeaderStyle>

         <FooterStyle BackColor="#00aaaa">
         </FooterStyle>
   
      </asp:DataGrid>

   </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

Community Additions

ADD
Show:
© 2014 Microsoft