Bagikan melalui

FormView.DeleteItem Metode

  • Referensi

Definisi

Ruang nama:
System.Web.UI.WebControls
Rakitan:
System.Web.dll

Menghapus rekaman saat ini dalam FormView kontrol dari sumber data.

public:
 virtual void DeleteItem();
public virtual void DeleteItem ();
abstract member DeleteItem : unit -> unit
override this.DeleteItem : unit -> unit
Public Overridable Sub DeleteItem ()

Contoh

Contoh berikut menunjukkan cara menggunakan DeleteItem metode untuk menghapus rekaman saat ini secara terprogram dalam FormView kontrol dari sumber data.


<%@ 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 DeleteButton_Click(Object sender, EventArgs e)
  {

    // Use the DeleteItem method to programmatically delete
    // the current record in the FormView control. 
    EmployeeFormView.DeleteItem();

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView DeleteItem Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormView DeleteItem Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID" 
        runat="server">
        
        <itemtemplate>
        
          <table>
            <tr>
              <td>
                <asp:image id="EmployeeImage"
                  imageurl='<%# Eval("PhotoPath") %>'
                  alternatetext='<%# Eval("LastName") %>' 
                  runat="server"/>
              </td>
              <td>
                <h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>      
                <%# Eval("Title") %>        
              </td>
            </tr>
          </table>
        
        </itemtemplate>
          
      </asp:formview>
      
      <hr/>
      
      <asp:Button id="DeleteButton"
        text="Delete Record"
        onclick="DeleteButton_Click" 
        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]"
        deletecommand="Delete [Employees] 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 DeleteButton_Click(ByVal sender As Object, ByVal e As EventArgs)

    ' Use the DeleteItem method to programmatically delete
    ' the current record in the FormView control. 
    EmployeeFormView.DeleteItem()

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView DeleteItem Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormView DeleteItem Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true"
        datakeynames="EmployeeID" 
        runat="server">
        
        <itemtemplate>
        
          <table>
            <tr>
              <td>
                <asp:image id="EmployeeImage"
                  imageurl='<%# Eval("PhotoPath") %>'
                  alternatetext='<%# Eval("LastName") %>' 
                  runat="server"/>
              </td>
              <td>
                <h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>      
                <%# Eval("Title") %>        
              </td>
            </tr>
          </table>
        
        </itemtemplate>
          
      </asp:formview>
      
      <hr/>
      
      <asp:Button id="DeleteButton"
        text="Delete Record"
        onclick="DeleteButton_Click" 
        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]"
        deletecommand="Delete [Employees] Where [EmployeeID]=@EmployeeID"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
            
    </form>
  </body>
</html>

Keterangan

DeleteItem Gunakan metode untuk menghapus rekaman saat ini secara terprogram dalam FormView kontrol dari sumber data. Metode ini biasanya digunakan ketika Anda perlu menghapus rekaman saat ini dari luar FormView kontrol, seperti dari kontrol yang berbeda pada halaman. Memanggil metode ini juga meningkatkan ItemDeleted peristiwa dan ItemDeleting .

Berlaku untuk

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