DetailsView.ModeChanged 事件

定义

DetailsView 控件尝试在编辑、插入和只读模式之间更改时,但在更新 CurrentMode 属性之后发生。Occurs when a DetailsView control attempts to change between edit, insert, and read-only mode, but after the CurrentMode property is updated.

public:
 event EventHandler ^ ModeChanged;
public event EventHandler ModeChanged;
member this.ModeChanged : EventHandler 
Public Custom Event ModeChanged As EventHandler 

示例

下面的代码示例演示如何使用ModeChanged事件在标题行中显示当前模式。The following code example demonstrates how to use the ModeChanged event to display the current mode in the header row.


<%@ 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 CustomerDetailView_ModeChanged(Object sender, EventArgs e)
  {
    // Display the current mode in the header row.
      switch (CustomerDetailView.CurrentMode)
    {
      case DetailsViewMode.Edit:
        CustomerDetailView.HeaderText = "Edit Mode";
        CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Red;
        CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.LightGray;
        break;
      case DetailsViewMode.Insert:
        CustomerDetailView.HeaderText = "Insert Mode";
        CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Green;
        CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.Yellow;
        break;
      case DetailsViewMode.ReadOnly:
        CustomerDetailView.HeaderText = "Read-Only Mode";
        CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Blue;
        CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.White;
        break;
      default:
          CustomerDetailView.HeaderText = "Error!";
        break;
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView ModeChanged Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView ModeChanged Example</h3>      
                
        <asp:detailsview id="CustomerDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneraterows="true"
          autogenerateeditbutton="true"
          autogenerateinsertbutton="true"  
          allowpaging="true"
          headertext="Read-Only Mode" 
          onmodechanged="CustomerDetailView_ModeChanged" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
            
          <headerstyle forecolor="Blue"/>
                    
        </asp:detailsview>
        
        <!-- 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="DetailsViewSource" runat="server" 
          ConnectionString=
            "<%$ ConnectionStrings:NorthWindConnectionString%>"
            InsertCommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
          SelectCommand="Select [CustomerID], [CompanyName], 
            [Address], [City], [PostalCode], [Country] From 
            [Customers]">
        </asp:SqlDataSource>
    </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 CustomerDetailView_ModeChanged(ByVal sender As Object, ByVal e As EventArgs)
  
        ' Display the current mode in the header row.
        Select Case CustomerDetailView.CurrentMode

            Case DetailsViewMode.Edit
                CustomerDetailView.HeaderText = "Edit Mode"
                CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Red
                CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.LightGray

            Case DetailsViewMode.Insert
                CustomerDetailView.HeaderText = "Insert Mode"
                CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Green
                CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.Yellow

            Case DetailsViewMode.ReadOnly
                CustomerDetailView.HeaderText = "Read-Only Mode"
                CustomerDetailView.HeaderStyle.ForeColor = System.Drawing.Color.Blue
                CustomerDetailView.HeaderStyle.BackColor = System.Drawing.Color.White

            Case Else
                CustomerDetailView.HeaderText = "Error!"
        
        End Select
    
    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>DetailsView ModeChanged Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>DetailsView ModeChanged Example</h3>      
                
        <asp:detailsview id="CustomerDetailView"
          datasourceid="DetailsViewSource"
          datakeynames="CustomerID"
          autogeneraterows="true"
          autogenerateeditbutton="true"
          autogenerateinsertbutton="true"  
          allowpaging="true"
          headertext="Read-Only Mode" 
          onmodechanged="CustomerDetailView_ModeChanged" 
          runat="server">
               
          <fieldheaderstyle backcolor="Navy"
            forecolor="White"/>
            
          <headerstyle forecolor="Blue"/>
                    
        </asp:detailsview>
        
        <!-- 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="DetailsViewSource" runat="server" 
          ConnectionString=
            "<%$ ConnectionStrings:NorthWindConnectionString%>"
            InsertCommand="INSERT INTO [Customers]([CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country]) VALUES (@CustomerID, @CompanyName, @Address, @City, @PostalCode, @Country)"
          SelectCommand="Select [CustomerID], [CompanyName], 
            [Address], [City], [PostalCode], [Country] From 
            [Customers]">
        </asp:SqlDataSource>
    </form>
  </body>
</html>

注解

当控件尝试在编辑、插入和只读CurrentMode模式之间更改时, 但在更新属性后, 会引发事件。ModeChanged DetailsViewThe ModeChanged event is raised when a DetailsView control attempts to change between edit, insert, and read-only mode, but after the CurrentMode property is updated. 这使你可以提供一个事件处理程序, 该事件处理程序在此事件发生DetailsView时执行自定义例程 (如将控件与其他控件同步)。This allows you to provide an event handler that performs a custom routine, such as synchronizing the DetailsView control with another control, whenever this event occurs.

有关如何处理事件的详细信息, 请参阅处理和引发事件For more information about how to handle events, see Handling and Raising Events.

适用于

另请参阅