DataGridItem.ItemIndex Property
Gets the index of the DataGridItem object from the Items collection of the DataGrid control.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.Int32The index of the DataGridItem from the Items collection of the DataGrid control.
Use the ItemIndex property to determine the index of the DataGridItem object from the Items collection of the DataGrid control.
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This property applies only to data items in the DataGrid control. The ItemType property of the DataGridItem object must be set to ListItemType.Item, ListItemType.AlternatingItem, ListItemType.SelectedItem, or ListItemType.EditItem. |
The following code example demonstrates how to use the ItemIndex property to display the index of the DataGridItem object from the Items collection of the DataGrid control.
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The following code example uses the single-file code model and might not work correctly if copied directly into a code-behind file. This code example must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see NIB: Events and Delegates. |
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <script language="VB" runat="server"> Dim Cart As DataTable Dim CartView As DataView Function CreateDataSource() As ICollection Dim dt As New DataTable() Dim dr As DataRow dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(New DataColumn("StringValue", GetType(String))) dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double))) Dim i As Integer For i = 0 To 9 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = 1.23 *(i + 1) dt.Rows.Add(dr) Next i Dim dv As New DataView(dt) Return dv End Function 'CreateDataSource Sub Page_Load(sender As Object, e As EventArgs) If Not IsPostBack Then ' Need to load this data only once. ItemsGrid.DataSource = CreateDataSource() ItemsGrid.DataBind() End If End Sub 'Page_Load Sub Button_Click(sender As Object, e As EventArgs) Label1.Text = "The DataSetIndex of each item in the DataGrid are: <br />" Dim item As DataGridItem For Each item In ItemsGrid.Items Label1.Text &= "<br />" & item.ItemIndex.ToString() & " - " & item.Cells(1).Text Next item End Sub 'Button_Click </script> <head runat="server"> <title>DataGridItem ItemIndex Example</title> </head> <body> <form id="form1" runat="server"> <h3>DataGridItem ItemIndex Example</h3> <asp:DataGrid id="ItemsGrid" runat="server" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="true" AutoGenerateColumns="true"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> </asp:DataGrid> <br /> <asp:Button id="Button1" Text="Display ItemIndex of Items in DataGrid" OnClick="Button_Click" runat="server"/> <br /><br /> <asp:Label id="Label1" runat="server"/> </form> </body> </html>
Available since 1.1
