DataListCommandEventArgs.CommandSource Property
.NET Framework (current version)
Gets the source of the command.
Assembly: System.Web (in System.Web.dll)
Use the CommandSource property to determine the command source that raised the event. This property is commonly used to determine which command raises the event. You can then take appropriate action, based on the command.
The following example demonstrates how to use the CommandSource property to determine the command selected by the user. It then performs the appropriate action based, on the command.
<%@ 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" > <head> <title>DataListCommandEventArgs Example</title> <script language="VB" runat="server"> Function CreateDataSource() As ICollection Dim dt As New DataTable() Dim dr As DataRow ' Create a DataTable. dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(New DataColumn("StringValue", GetType(String))) dt.Columns.Add(New DataColumn("DateTimeValue", GetType(DateTime))) ' Create sample data. Dim i As Integer For i = 1 To 9 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = DateTime.Now.ToShortTimeString() dt.Rows.Add(dr) Next i ' Return a DataView to the DataTable. Dim dv As New DataView(dt) Return dv End Function 'CreateDataSource Sub Page_Load(sender As Object, e As EventArgs) If Not IsPostBack Then BindList() End If End Sub 'Page_Load Sub BindList() DataList1.DataSource = CreateDataSource() DataList1.DataBind() End Sub 'BindList Sub DataList_ItemCommand(sender As Object, e As DataListCommandEventArgs) If CType(e.CommandSource, LinkButton).CommandName = "select" Then DataList1.SelectedIndex = e.Item.ItemIndex End If BindList() End Sub 'DataList_ItemCommand </script> </head> <body> <form id="form1" runat="server"> <h3>DataListCommandEventArgs Example</h3> <asp:DataList id="DataList1" GridLines="Both" OnItemCommand="DataList_ItemCommand" runat="server"> <HeaderTemplate> Items </HeaderTemplate> <ItemTemplate> <asp:LinkButton id="button1" Text="Show details" CommandName="select" runat="server"/> <%# DataBinder.Eval(Container.DataItem, "StringValue") %> </ItemTemplate> <SelectedItemTemplate> Item: <%# DataBinder.Eval(Container.DataItem, "StringValue") %> <br /> Order Date: <%# DataBinder.Eval(Container.DataItem, "DateTimeValue", "{0:d}") %> <br /> Quantity: <%# DataBinder.Eval(Container.DataItem, "IntegerValue", "{0:N1}") %> <br /> </SelectedItemTemplate> </asp:DataList> </form> </body> </html>
.NET Framework
Available since 1.1
Available since 1.1
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