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ButtonFieldBase.ButtonType Proprietà

  • Riferimento

Definizione

Spazio dei nomi:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Ottiene o imposta il tipo di pulsante da visualizzare nel campo pulsante.

public:
 virtual property System::Web::UI::WebControls::ButtonType ButtonType { System::Web::UI::WebControls::ButtonType get(); void set(System::Web::UI::WebControls::ButtonType value); };
public virtual System.Web.UI.WebControls.ButtonType ButtonType { get; set; }
member this.ButtonType : System.Web.UI.WebControls.ButtonType with get, set
Public Overridable Property ButtonType As ButtonType

Valore della proprietà

ButtonType

Uno dei valori di ButtonType. Il valore predefinito è ButtonType.Link.

Eccezioni

ArgumentOutOfRangeException

Il valore della proprietà ButtonType non è uno dei valori ButtonType.

Esempio

Nell'esempio di codice seguente viene illustrato come usare la ButtonType proprietà per specificare che i pulsanti vengono visualizzati nell'oggetto ButtonField di un GridView controllo.

<%@ Page language="C#" %>

<script runat="server">

  void AuthorsGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
  {
  
    // If multiple ButtonField column fields are used, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Select")
    {
    
      // Convert the row index stored in the CommandArgument
      // property to an Integer.
      int index = Convert.ToInt32(e.CommandArgument);    
    
      // Get the last name of the selected author from the appropriate
      // cell in the GridView control.
      GridViewRow selectedRow = AuthorsGridView.Rows[index];
      TableCell lastNameCell = selectedRow.Cells[1];
      string lastName = lastNameCell.Text;  
    
      // Display the selected author.
      Message.Text = "You selected " + lastName + ".";
      
    }
    
  }
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ButtonFieldBase ButtonType Example</title>
</head>
<body>
  <form id="form1" runat="server">
  <div>

    <h3>ButtonFieldBase ButtonType Example</h3>

    <asp:label id="Message"
      forecolor="Red"
      runat="server"
      AssociatedControlID="AuthorsGridView" />
                    
    <!-- Populate the Columns collection declaratively. -->
    <asp:gridview id="AuthorsGridView" 
      datasourceid="AuthorsSqlDataSource" 
      autogeneratecolumns="false"
      onrowcommand="AuthorsGridView_RowCommand" 
      runat="server">
                
      <columns>
        <asp:buttonfield buttontype="Button" 
          commandname="Select"
          headertext="Select Author" 
          text="Select"/>
        <asp:boundfield datafield="au_lname" 
          headertext="Last Name"/>
        <asp:boundfield datafield="au_fname" 
          headertext="First Name"/>
      </columns>
                
    </asp:gridview>
            
    <!-- This example uses Microsoft SQL Server and connects -->
    <!-- to the Pubs sample database. -->
    <asp:sqldatasource id="AuthorsSqlDataSource"  
      selectcommand="SELECT [au_lname], [au_fname] FROM [authors]"
      connectionstring="server=localhost;database=pubs;integrated security=SSPI"
      runat="server">
    </asp:sqldatasource>

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


<%@ Page language="VB" %>

<script runat="server">

  Sub AuthorsGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)
  
    ' If multiple ButtonField column fields are used, use the
    ' CommandName property to determine which button was clicked.
    If e.CommandName = "Select" Then
    
      ' Convert the row index stored in the CommandArgument
      ' property to an Integer.
      Dim index As Integer = Convert.ToInt32(e.CommandArgument)
    
      ' Get the last name of the selected author from the appropriate
      ' cell in the GridView control.
      Dim selectedRow As GridViewRow = AuthorsGridView.Rows(index)
      Dim lastNameCell As TableCell = selectedRow.Cells(1)
      Dim lastName As String = lastNameCell.Text
    
      ' Display the selected author.
      Message.Text = "You selected " & lastName & "."
      
    End If
    
  End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ButtonFieldBase ButtonType Example</title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
        
    <h3>ButtonFieldBase ButtonType Example</h3>

    <asp:label id="Message"
      forecolor="Red"
      runat="server"
      AssociatedControlID="AuthorsGridView"/>

    <!-- Populate the Columns collection declaratively. -->
    <asp:gridview id="AuthorsGridView" 
      datasourceid="AuthorsSqlDataSource" 
      autogeneratecolumns="false"
      onrowcommand="AuthorsGridView_RowCommand"
      runat="server">

      <columns>
        <asp:buttonfield buttontype="Button" 
          commandname="Select"
          headertext="Select Author" 
          text="Select"/>
        <asp:boundfield datafield="au_lname" 
          headertext="Last Name"/>
        <asp:boundfield datafield="au_fname" 
          headertext="First Name"/>
      </columns>

    </asp:gridview>

    <!-- This example uses Microsoft SQL Server and connects -->
    <!-- to the Pubs sample database.                        -->
    <asp:sqldatasource id="AuthorsSqlDataSource"  
      selectcommand="SELECT [au_lname], [au_fname] FROM [authors]"
      connectionstring="server=localhost;database=pubs;integrated security=SSPI"
      runat="server">
    </asp:sqldatasource>

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

Commenti

Utilizzare la ButtonType proprietà per specificare il tipo di pulsante visualizzato in un campo del pulsante. Nella tabella seguente sono elencati i tipi di pulsante disponibili.

Valore del tipo di pulsante Visualizza come
Button Pulsante.
Image Pulsante con un'immagine.
Link Collegamento.

Il valore di questa proprietà viene archiviato nello stato di visualizzazione.

Si applica a

Vedi anche