FormView.ModeChanged Event
.NET Framework (current version)
Occurs when the FormView control switches between edit, insert, and read-only mode, but after the mode has changed.
Assembly: System.Web (in System.Web.dll)
The ModeChanged event is raised when a FormView control attempts to switch between edit, insert, and read-only mode, but after the mode actually changes. This allows you to provide an event-handling method that performs a custom routine, such as synchronizing the FormView control with another control, whenever this event occurs.
For more information about handling events, see NIB: Consuming Events.
The following example demonstrates how to use the ModeChanged event to display the current mode in the header row of a FormView control.
<%@ Page language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Sub EmployeeFormView_ModeChanged(ByVal sender As Object, ByVal e As EventArgs) ' Display the current mode in the header row. Select Case EmployeeFormView.CurrentMode Case FormViewMode.Edit EmployeeFormView.HeaderText = "Edit Mode" EmployeeFormView.HeaderStyle.BackColor = System.Drawing.Color.Red Case FormViewMode.ReadOnly EmployeeFormView.HeaderText = "Read-Only Mode" EmployeeFormView.HeaderStyle.BackColor = System.Drawing.Color.Green Case Else EmployeeFormView.HeaderText = "Unsupported mode." EmployeeFormView.HeaderStyle.BackColor = System.Drawing.Color.Yellow End Select End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>FormView ModeChanged Example</title> </head> <body> <form id="form1" runat="server"> <h3>FormView ModeChanged Example</h3> <asp:formview id="EmployeeFormView" datasourceid="EmployeeSource" allowpaging="true" datakeynames="EmployeeID" headertext="Read-Only Mode" headerstyle-backcolor="Green" emptydatatext="No employees found." onmodechanged="EmployeeFormView_ModeChanged" runat="server"> <itemtemplate> <table> <tr> <td rowspan="6"> <asp:image id="EmployeeImage" imageurl='<%# Eval("PhotoPath") %>' alternatetext='<%# Eval("LastName") %>' runat="server"/> </td> <td colspan="2"> </td> </tr> <tr> <td> <b>Name:</b> </td> <td> <%# Eval("FirstName") %> <%# Eval("LastName") %> </td> </tr> <tr> <td> <b>Title:</b> </td> <td> <%# Eval("Title") %> </td> </tr> <tr> <td> <b>Hire Date:</b> </td> <td> <%# Eval("HireDate","{0:d}") %> </td> </tr> <tr style="height:150" valign="top"> <td> <b>Address:</b> </td> <td> <%# Eval("Address") %><br/> <%# Eval("City") %> <%# Eval("Region") %> <%# Eval("PostalCode") %><br/> <%# Eval("Country") %> </td> </tr> <tr> <td colspan="2"> <asp:linkbutton id="Edit" text="Edit" commandname="Edit" runat="server"/> </td> </tr> </table> </itemtemplate> <edititemtemplate> <table> <tr> <td rowspan="6"> <asp:image id="EmployeeEditImage" imageurl='<%# Eval("PhotoPath") %>' alternatetext='<%# Eval("LastName") %>' runat="server"/> </td> <td colspan="2"> </td> </tr> <tr> <td> <b><asp:Label runat="server" AssociatedControlID="FirstNameUpdateTextBox" Text="Name" />:</b> </td> <td> <asp:textbox id="FirstNameUpdateTextBox" text='<%# Bind("FirstName") %>' accesskey="n" tabindex="1" runat="server"/> <asp:textbox id="LastNameUpdateTextBox" text='<%# Bind("LastName") %>' accesskey="l" tabindex="2" runat="server"/> </td> </tr> <tr> <td> <b><asp:Label runat="server" AssociatedControlID="TitleUpdateTextBox" Text="Title" />:</b> </td> <td> <asp:textbox id="TitleUpdateTextBox" text='<%# Bind("Title") %>' accesskey="t" tabindex="3" runat="server"/> </td> </tr> <tr> <b><asp:Label runat="server" AssociatedControlID="HireDateUpdateTextBox" Text="Hire Date" />:</b> <td> <asp:textbox id="HireDateUpdateTextBox" text='<%# Bind("HireDate", "{0:d}") %>' accesskey="h" tabindex="4" runat="server" /> </td> </tr> <tr style="height:150" valign="top"> <td> <b><asp:Label runat="server" AssociatedControlID="AddressUpdateTextBox" Text="Address" />:</b> </td> <td> <asp:textbox id="AddressUpdateTextBox" text='<%# Bind("Address") %>' accesskey="a" tabindex="5" runat="server"/> <br/> <asp:textbox id="CityUpdateTextBox" text='<%# Bind("City") %>' accesskey="c" tabindex="6" runat="server"/> <asp:textbox id="RegionUpdateTextBox" text='<%# Bind("Region") %>' width="40" accesskey="r" tabindex="7" runat="server"/> <asp:textbox id="PostalCodeUpdateTextBox" text='<%# Bind("PostalCode") %>' width="60" accesskey="p" tabindex="8" runat="server"/> <br/> <asp:textbox id="CountryUpdateTextBox" text='<%# Bind("Country") %>' accesskey="u" tabindex="9" runat="server"/> </td> </tr> <tr> <td colspan="2"> <asp:linkbutton id="UpdateButton" text="Update" tabindex="10" commandname="Update" runat="server"/> <asp:linkbutton id="CancelButton" text="Cancel" tabindex="11" commandname="Cancel" runat="server"/> </td> </tr> </table> </edititemtemplate> </asp:formview> <!-- 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="EmployeeSource" selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [Address], [City], [Region], [PostalCode], [Country], [HireDate], [PhotoPath] From [Employees]" updatecommand="Update [Employees] Set [LastName]=@LastName, [FirstName]=@FirstName, [Title]=@Title, [Address]=@Address, [City]=@City, [Region]=@Region, [PostalCode]=@PostalCode, [Country]=@Country Where [EmployeeID]=@EmployeeID" connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" runat="server"/> </form> </body> </html>
.NET Framework
Available since 2.0
Available since 2.0
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