DetailsView.ModeChanged Kejadian

Referensi

Definisi

Ruang nama:: System.Web.UI.WebControls

Rakitan:: System.Web.dll

Penting

Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.

Terjadi ketika DetailsView kontrol mencoba mengubah antara mode edit, sisipkan, dan baca-saja, tetapi setelah properti diperbarui CurrentMode .

public:
 event EventHandler ^ ModeChanged;

public event EventHandler ModeChanged;

member this.ModeChanged : EventHandler

Public Custom Event ModeChanged As EventHandler

Jenis Acara

EventHandler

Contoh

Contoh kode berikut menunjukkan cara menggunakan ModeChanged peristiwa untuk menampilkan mode saat ini di baris header.


<%@ 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>

Keterangan

Peristiwa ModeChanged dimunculkan ketika DetailsView kontrol mencoba untuk mengubah antara mode edit, sisipkan, dan baca-saja, tetapi setelah properti diperbarui CurrentMode . Ini memungkinkan Anda untuk menyediakan penanganan aktivitas yang melakukan rutinitas kustom, seperti menyinkronkan DetailsView kontrol dengan kontrol lain, setiap kali peristiwa ini terjadi.

Untuk informasi selengkapnya tentang cara menangani peristiwa, lihat Menangani dan Menaikkan Peristiwa.

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