Bagikan melalui

ButtonColumn.CommandName Properti

  • Referensi

Definisi

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

Mendapatkan atau mengatur string yang mewakili perintah yang akan dilakukan saat tombol dalam objek diklik ButtonColumn .

public:
 virtual property System::String ^ CommandName { System::String ^ get(); void set(System::String ^ value); };
public virtual string CommandName { get; set; }
member this.CommandName : string with get, set
Public Overridable Property CommandName As String

Nilai Properti

String

String yang mewakili perintah yang akan dilakukan saat tombol di diklik ButtonColumn . Defaultnya adalah string kosong ("").

Contoh

Contoh kode berikut menunjukkan cara menggunakan CommandName properti untuk mengaitkan nama perintah dengan tombol. Kemudian, nama perintah tombol yang diklik ditentukan secara terprogram di penanganan aktivitas untuk ItemCommand peristiwa dan tindakan yang sesuai dilakukan.


<%@ 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">

    protected void Page_Init(object sender, EventArgs e)
    {
       // Create dynamic column to add to Columns collection.
       ButtonColumn AddColumn = new ButtonColumn();
       AddColumn.HeaderText="Add Item"; 
       AddColumn.Text="Add";
       AddColumn.CommandName="Add";
       AddColumn.ButtonType = ButtonColumnType.PushButton;

       // Add column to Columns collection.
       ItemsGrid.Columns.AddAt(0, AddColumn);
    }


    protected void ItemsGrid_ItemCommand(object source, DataGridCommandEventArgs e)
    {
        if (e.CommandName == "Add")
        {
            // Add logic for addition operation here.
            this.TextBox1.Text = "Added";
        }

    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>Untitled Page</title>
  </head>
  <body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:Button ID="Button1" runat="server" Text="Button" /><br />
        <asp:DataGrid 
          ID="ItemsGrid" 
          runat="server" 
          DataSourceID="CustomersSqlDataSource" 
          AutoGenerateColumns="true" 
          OnItemCommand="ItemsGrid_ItemCommand" />
        
        <!-- This example uses Microsoft SQL Server and connects -->
        <!-- to the Northwind sample database.                   -->
        <asp:sqldatasource id="CustomersSqlDataSource"  
          selectcommand="Select [CustomerID], [CompanyName], [ContactName], [ContactTitle] From [Customers]"
          connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
          runat="server">
        </asp:sqldatasource>

    </div>
    </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">

    Protected Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)
        ' Create dynamic column to add to Columns collection.
        Dim AddColumn As New ButtonColumn
        AddColumn.HeaderText = "Add Item"
        AddColumn.Text = "Add"
        AddColumn.CommandName = "Add"
        AddColumn.ButtonType = ButtonColumnType.PushButton

        ' Add column to Columns collection.
        ItemsGrid.Columns.AddAt(0, AddColumn)
    End Sub


    Protected Sub ItemsGrid_ItemCommand(ByVal source As Object, ByVal e As DataGridCommandEventArgs)
        If e.CommandName = "Add" Then
            ' Add logic for addition operation here.
            TextBox1.Text = "Added"          
        End If
    End Sub
    
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="head1" runat="server">
    <title>Untitled Page</title>
  </head>
  <body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:Button ID="Button1" runat="server" Text="Button" /><br />
        <asp:DataGrid 
          ID="ItemsGrid" 
          runat="server" 
          DataSourceID="CustomersSqlDataSource" 
          AutoGenerateColumns="true" 
          OnItemCommand="ItemsGrid_ItemCommand" />
        
        <!-- This example uses Microsoft SQL Server and connects -->
        <!-- to the Northwind sample database.                   -->
        <asp:sqldatasource id="CustomersSqlDataSource"  
          selectcommand="Select [CustomerID], [CompanyName], [ContactName], [ContactTitle] From [Customers]"
          connectionstring="<%$ ConnectionStrings:NorthWindConnection%>"
          runat="server">
        </asp:sqldatasource>

    </div>
    </form>
</body>
</html>

Keterangan

CommandName Gunakan properti untuk mengaitkan nama perintah, seperti Add atau Remove, dengan tombol . Anda dapat mengatur CommandName properti ke string apa pun yang mengidentifikasi tindakan yang akan dilakukan saat tombol di objek diklik System.Web.UI.WebControls.ButtonColumn . Kemudian, Anda dapat menentukan nama perintah secara terprogram di penanganan aktivitas untuk ItemCommand peristiwa dan melakukan tindakan yang sesuai.

Nilai properti ini disimpan dalam status tampilan.

Berlaku untuk

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