Export (0) Print
Expand All

FormView.CurrentMode Property

Gets the current data-entry mode of the FormView control.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

[BrowsableAttribute(false)]
public FormViewMode CurrentMode { get; }

Property Value

Type: System.Web.UI.WebControls.FormViewMode
One of the FormViewMode values.

Use the CurrentMode property to determine whether the FormView control is in edit, insert, or read-only 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.

This value is normally set automatically by the FormView control when the New, Update, Insert, Delete, or Cancel command button is clicked. When the FormView control changes modes in response to an action, the events in the following table are raised. This allows you to create a custom event handler that performs the appropriate routine when the event occurs.

Event

Description

ModeChanged

Occurs when the FormView control changes modes, but after the mode changes. This event is commonly used to perform a task whenever the FormView control changes modes.

ModeChanging

Occurs when the FormView control changes modes, but before the mode changes. This event is commonly used to cancel the mode change.

Note   These events are not raised when you change the mode programmatically by using the ChangeMode method.

The following example demonstrates how to use the CurrentMode property to determine whether the FormView control is in edit, insert, or read-only mode. If the user attempts to navigate to another record while the FormView control is in edit more, the paging operation is canceled.

<%@ 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_OnPageIndexChanging(Object sender, FormViewPageEventArgs e)
  {
    // Cancel the paging operation if the user attempts to navigate  
    // to another record while the FormView control is in edit mode.  
    if (EmployeeFormView.CurrentMode == FormViewMode.Edit)
    {
      e.Cancel = true;
      MessageLabel.Text = 
        "Please complete the update operation before navigating to another record.";
    }
  }

  void EmployeeFormView_OnModeChanged(Object sender, EventArgs e)
  {
    // Clear the message label.
    MessageLabel.Text = "";
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>FormView Example</h3>

      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID"
        emptydatatext="No employees found."
        onpageindexchanging="EmployeeFormView_OnPageIndexChanging" 
        onmodechanged="EmployeeFormView_OnModeChanged"  
        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">
                  &nbsp; 
              </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">
                  &nbsp; 
              </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>

      <br/><br/>

      <asp:Label id="MessageLabel"
        forecolor="Red"
        runat="server"/> 

      <!-- 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>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

Community Additions

ADD
Show:
© 2014 Microsoft