DetailsViewCommandEventArgs.CommandSource Property
.NET Framework (current version)
Gets the source of the command.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.ObjectAn instance of the System.Object class that represents the source of the command.
Use the CommandSource property to access the properties of the object that represents the source of the command. In some cases, this will be the DetailsView control itself, and in other cases it will be the Button control that was clicked.
The following code example demonstrates how to use the CommandSource property to determine which of two DetailsView controls raised the ItemCommand event.
<%@ page language="VB" autoeventwireup="false" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Sub ItemDetailsView_ItemCommand(ByVal sender As Object, _ ByVal e As DetailsViewCommandEventArgs) _ Handles CustomerDetailsView.ItemCommand, _ EmployeesDetailsView.ItemCommand ' Use the CommandName property to determine which button ' was clicked. If e.CommandName = "Add" Then ' Because this event handler is used for two different ' DetailsView controls, use the CommandSource property ' to get the DetailsView control that raised the event. Dim view As DetailsView = CType(e.CommandSource, DetailsView) ' Determine which ListBox control to update based on the ' ID of the DetailsView control that raised the event. Dim list As ListBox If view.ID = "CustomerDetailsView" Then list = CustomerListBox Else list = EmployeesListBox End If ' Add the selected item to the appropriate ListBox control. ' Get the row that contains the value to add. For this ' example, get the second row (index 1) of the DetailsView ' control. Dim row As DetailsViewRow = view.Rows(1) ' Get the value from the appropriate cell. For this ' example, get the value of the second cell (index 1) ' of the row. Dim value As String = row.Cells(1).Text ' Create a ListItem object using the value. Dim item As New ListItem(value) ' Add the ListItem object to the ListBox control, if the ' item does not already exist. If Not list.Items.Contains(item) Then list.Items.Add(item) End If End If End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>DetailsViewCommandEventArgs CommandSource Example</title> </head> <body> <form id="form1" runat="server"> <h3>DetailsViewCommandEventArgs CommandSource Example</h3> <table border="0"> <tr valign="top"> <td> <asp:detailsview id="CustomerDetailsView" datasourceid="CustomerSource" allowpaging="true" autogeneraterows="true" onitemcommand="ItemDetailsView_ItemCommand" runat="server"> <fields> <asp:buttonfield buttontype="Link" causesvalidation="false" text="Add to List" commandname="Add"/> </fields> </asp:detailsview> </td> <td> <asp:detailsview id="EmployeesDetailsView" datasourceid="EmployeesSource" allowpaging="true" autogeneraterows="true" onitemcommand="ItemDetailsView_ItemCommand" runat="server"> <fields> <asp:buttonfield buttontype="Link" causesvalidation="false" text="Add to List" commandname="Add"/> </fields> </asp:detailsview> </td> </tr> <tr> <td> Selected Customers:<br/> <asp:listbox id="CustomerListBox" runat="server"/> </td> <td> Selected Employees:<br/> <asp:listbox id="EmployeesListBox" runat="server"/> </td> </tr> </table> <!-- This example uses Microsoft SQL Server and connects --> <!-- to the Northwind sample database. Use an ASP.NET --> <!-- expression to retrieve the connection string value --> <!-- from the Web.config file. --> <asp:sqldatasource id="CustomerSource" selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]" connectionstring= "<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> <asp:sqldatasource id="EmployeesSource" selectcommand="Select [EmployeeID], [FirstName], [LastName], [Title] From [Employees]" connectionstring= "<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </form> </body> </html>
.NET Framework
Available since 2.0
Available since 2.0
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