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FormView.HeaderRow Properti

  • Referensi

Definisi

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

FormViewRow Mendapatkan objek yang mewakili baris header dalam FormView kontrol.

public:
 virtual property System::Web::UI::WebControls::FormViewRow ^ HeaderRow { System::Web::UI::WebControls::FormViewRow ^ get(); };
[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.FormViewRow HeaderRow { get; }
[<System.ComponentModel.Browsable(false)>]
member this.HeaderRow : System.Web.UI.WebControls.FormViewRow
Public Overridable ReadOnly Property HeaderRow As FormViewRow

Nilai Properti

FormViewRow

FormViewRow yang mewakili baris header dalam FormView kontrol.

Atribut
BrowsableAttribute

Contoh

Contoh berikut menunjukkan cara menggunakan HeaderRow properti untuk memodifikasi properti baris header secara terprogram selama ItemCreated peristiwa.


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

    // Use the HeaderRow property to retrieve the header row.
    FormViewRow header = EmployeeFormView.HeaderRow;

    // Retrieve the HeaderLabel Label control from the header row. 
    Label headerLabel = (Label)header.FindControl("HeaderLabel");

    if(headerLabel != null)
    {
      // Display the current page number.
      int currentPage = EmployeeFormView.PageIndex + 1;
      headerLabel.Text = "Page " + currentPage.ToString();
    }

  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView HeaderTemplate Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>FormView HeaderTemplate Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true" 
        datakeynames="EmployeeID"
        onitemcreated="EmployeeFormView_ItemCreated"
        runat="server">
        
        <headertemplate>
          <table>
            <tr>
              <td>
                <asp:image id="LogoImage"
                  imageurl="~/Images/LogoImage.jpg"
                  alternatetext="Our Logo"
                  runat="server"/>
              </td>
              <td>
                <asp:label id="HeaderLabel"
                  runat="server"/>
              </td>
            </tr>
          </table>
        </headertemplate>
        
        <headerstyle horizontalalign="Center"
          forecolor="White"
          backcolor="LightBlue"/>
           
        <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>
          
        <pagersettings position="Bottom"
          mode="NextPrevious"/> 
                  
      </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]"
        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_ItemCreated(ByVal sender As Object, ByVal e As EventArgs)
  
    ' Use the HeaderRow property to retrieve the header row.
    Dim header As FormViewRow = EmployeeFormView.HeaderRow

    ' Retrieve the HeaderLabel Label control from the header row. 
    Dim headerLabel As Label = CType(header.FindControl("HeaderLabel"), Label)

    If headerLabel IsNot Nothing Then
    
      ' Display the current page number.
      Dim currentPage As Integer = EmployeeFormView.PageIndex + 1
      headerLabel.Text = "Page " & currentPage.ToString()
    
    End If

  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>FormView HeaderTemplate Example</title>
</head>
<body>
    <form id="Form1" runat="server">
        
      <h3>FormView HeaderTemplate Example</h3>
                       
      <asp:formview id="EmployeeFormView"
        datasourceid="EmployeeSource"
        allowpaging="true" 
        datakeynames="EmployeeID"
        onitemcreated="EmployeeFormView_ItemCreated"
        runat="server">
        
        <headertemplate>
          <table>
            <tr>
              <td>
                <asp:image id="LogoImage"
                  imageurl="~/Images/LogoImage.jpg"
                  alternatetext="Our Logo"
                  runat="server"/>
              </td>
              <td>
                <asp:label id="HeaderLabel"
                  runat="server"/>
              </td>
            </tr>
          </table>
        </headertemplate>
        
        <headerstyle horizontalalign="Center"
          forecolor="White"
          backcolor="LightBlue"/>
           
        <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>
          
        <pagersettings position="Bottom"
          mode="NextPrevious"/> 
                  
      </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]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>
            
    </form>
  </body>
</html>

Keterangan

Baris header ditampilkan di bagian FormView atas kontrol saat HeaderText properti atau HeaderTemplate diatur. HeaderRow Gunakan properti untuk mengakses FormViewRow objek yang mewakili baris header secara terprogram.

Catatan

Properti HeaderRow hanya tersedia setelah FormView kontrol membuat baris header dalam peristiwa tersebut ItemCreated .

Properti ini biasanya digunakan ketika Anda perlu memanipulasi baris header secara terprogram, misalnya, saat menambahkan konten kustom. Setiap modifikasi pada HeaderRow properti harus dilakukan setelah FormView kontrol dirender; jika tidak, FormView kontrol akan menimpa perubahan apa pun.

Berlaku untuk

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