CheckBoxList.CreateControlStyle Methode

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Erstellt ein Formatvorlagenobjekt, das intern vom CheckBoxList Steuerelement verwendet wird, um alle formatbezogenen Eigenschaften zu implementieren.

protected:
 override System::Web::UI::WebControls::Style ^ CreateControlStyle();
protected override System.Web.UI.WebControls.Style CreateControlStyle();
override this.CreateControlStyle : unit -> System.Web.UI.WebControls.Style
Protected Overrides Function CreateControlStyle () As Style

Gibt zurück

Style

A Style , das die Formateigenschaften des Steuerelements enthält.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die CreateControlStyle Methode in einem benutzerdefinierten Serversteuerelement überschreibt, sodass immer eine neue Instanz der TableStyle Klasse für das CheckBoxList Steuerelement zurückgegeben wird.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom CheckBoxList - CreateControlStyle - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom CheckBoxList - CreateControlStyle - C# Example</h3>

      <aspSample:CustomCheckBoxListCreateControlStyle
        id="CheckBoxList1"
        runat="server"
        RepeatLayout="Table"
        RepeatColumns="2"
        CellSpacing="3"
        CellPadding="3">
        <asp:ListItem  Selected="True">Item 1</asp:ListItem>
        <asp:ListItem>Item 2</asp:ListItem>
        <asp:ListItem>Item 3</asp:ListItem>
        <asp:ListItem>Item 4</asp:ListItem>
        <asp:ListItem>Item 5</asp:ListItem>
        <asp:ListItem>Item 6</asp:ListItem>
      </aspSample:CustomCheckBoxListCreateControlStyle>

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

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom CheckBoxList - CreateControlStyle - VB.NET Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom CheckBoxList - CreateControlStyle - VB.NET Example</h3>
      <aspSample:CustomCheckBoxListCreateControlStyle id="CheckBoxList" runat="server"
       RepeatLayout="Table" RepeatColumns="2" CellSpacing="3" CellPadding="3">
                <asp:ListItem  Selected="True">Item 1</asp:ListItem>
                <asp:ListItem>Item 2</asp:ListItem>
                <asp:ListItem>Item 3</asp:ListItem>
                <asp:ListItem>Item 4</asp:ListItem>
                <asp:ListItem>Item 5</asp:ListItem>
                <asp:ListItem>Item 6</asp:ListItem>
            </aspSample:CustomCheckBoxListCreateControlStyle>
    </form>
  </body>
</html>

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomCheckBoxListCreateControlStyle : System.Web.UI.WebControls.CheckBoxList
    {
        protected override System.Web.UI.WebControls.Style CreateControlStyle()
        {
        // Initializes and return a new instance of the TableStyle class.
        return new System.Web.UI.WebControls.TableStyle(this.ViewState);
        }
    }
}

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomCheckBoxListCreateControlStyle
        Inherits System.Web.UI.WebControls.CheckBoxList

        Protected Overrides Function CreateControlStyle() As System.Web.UI.WebControls.Style

            ' Initializes and return a new instance of the TableStyle class.
            Return New System.Web.UI.WebControls.TableStyle(Me.ViewState)
        End Function
    End Class
End Namespace

Hinweise

Die CreateControlStyle Methode wird hauptsächlich von Steuerelemententwicklern in benutzerdefinierten Steuerelementen verwendet, die von der CheckBoxList Klasse abgeleitet sind.

Gilt für:

Weitere Informationen