FormView.ChangeMode(FormViewMode) Method
Definition
Important
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Switches the FormView control to the specified data-entry mode.
public:
void ChangeMode(System::Web::UI::WebControls::FormViewMode newMode);public void ChangeMode (System.Web.UI.WebControls.FormViewMode newMode);member this.ChangeMode : System.Web.UI.WebControls.FormViewMode -> unitPublic Sub ChangeMode (newMode As FormViewMode)Parameters
- newMode
- FormViewMode
One of the FormViewMode enumeration values.
Examples
The following example demonstrates how to use the ChangeMode method to return the FormView control to read-only mode whenever the user navigates to another record.
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void EmployeeFormView_PageIndexChanged(Object sender, EventArgs e)
{
// By default, if the FormView control is in edit mode and
// the user navigates to another page, the FormView control
// remains in edit mode. In this example, the ChangeMode
// method is used to return the FormView control to read-only
// mode whenever the user navigates to another record.
EmployeeFormView.ChangeMode(FormViewMode.ReadOnly);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView ChangeMode Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView ChangeMode Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
onpageindexchanged="EmployeeFormView_PageIndexChanged"
runat="server">
<rowstyle backcolor="LightGreen"
wrap="false"/>
<editrowstyle backcolor="LightBlue"
wrap="false"/>
<itemtemplate>
<table>
<tr>
<td rowspan="4">
<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 colspan="2">
<asp:linkbutton id="Edit"
text="Edit"
commandname="Edit"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<edititemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeEditImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<asp:textbox id="FirstNameUpdateTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameUpdateTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<asp:textbox id="TitleUpdateTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="UpdateButton"
text="Update"
commandname="Update"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
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], [PhotoPath] From [Employees]"
updatecommand="Update [Employees] Set [LastName]=@LastName, [FirstName]=@FirstName, [Title]=@Title Where [EmployeeID]=@EmployeeID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
<%@ 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_PageIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
' By default, if the FormView control is in edit mode and
' the user navigates to another page, the FormView control
' remains in edit mode. In this example, the ChangeMode
' method is used to return the FormView control to read-only
' mode whenever the user navigates to another record.
EmployeeFormView.ChangeMode(FormViewMode.ReadOnly)
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView ChangeMode Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView ChangeMode Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
emptydatatext="No employees found."
onpageindexchanged="EmployeeFormView_PageIndexChanged"
runat="server">
<rowstyle backcolor="LightGreen"
wrap="false"/>
<editrowstyle backcolor="LightBlue"
wrap="false"/>
<itemtemplate>
<table>
<tr>
<td rowspan="4">
<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 colspan="2">
<asp:linkbutton id="Edit"
text="Edit"
commandname="Edit"
runat="server"/>
</td>
</tr>
</table>
</itemtemplate>
<edititemtemplate>
<table>
<tr>
<td rowspan="4">
<asp:image id="EmployeeEditImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td colspan="2">
</td>
</tr>
<tr>
<td>
<b>Name:</b>
</td>
<td>
<asp:textbox id="FirstNameUpdateTextBox"
text='<%# Bind("FirstName") %>'
runat="server"/>
<asp:textbox id="LastNameUpdateTextBox"
text='<%# Bind("LastName") %>'
runat="server"/>
</td>
</tr>
<tr>
<td>
<b>Title:</b>
</td>
<td>
<asp:textbox id="TitleUpdateTextBox"
text='<%# Bind("Title") %>'
runat="server"/>
</td>
</tr>
<tr>
<td colspan="2">
<asp:linkbutton id="UpdateButton"
text="Update"
commandname="Update"
runat="server"/>
<asp:linkbutton id="CancelButton"
text="Cancel"
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], [PhotoPath] From [Employees]"
updatecommand="Update [Employees] Set [LastName]=@LastName, [FirstName]=@FirstName, [Title]=@Title Where [EmployeeID]=@EmployeeID"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Remarks
Use the ChangeMode method to programmatically switch the FormView control between edit, insert, and read-only modes. This method also updates the CurrentMode property with the specified mode. The following table lists the different mode values.
| Mode | Description |
|---|---|
FormViewMode.Edit |
The FormView control is in edit mode, which allows the user to update the values of a record. |
FormViewMode.Insert |
The FormView control is in insert mode, which allows the user to add a new record to the data source. |
FormView.ReadOnly |
The FormView control is in read-only mode, which is the normal display mode. |
Note
The ModeChanged and ModeChanging events are not raised when this method is called.
Applies to
See also
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