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DataGrid.CreateControlStyle-Methode

  • Artikel

Erstellt einen neuen Steuerelementstil.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

Syntax

'Declaration
Protected Overrides Function CreateControlStyle As Style
'Usage
Dim returnValue As Style

returnValue = Me.CreateControlStyle

protected override Style CreateControlStyle ()

protected:
virtual Style^ CreateControlStyle () override

protected Style CreateControlStyle ()

protected override function CreateControlStyle () : Style

Rückgabewert

Style zur Darstellung des neuen Stils.

Beispiel

Das folgende Codebeispiel veranschaulicht das Überschreiben der CreateControlStyle-Methode in einem benutzerdefinierten Serversteuerelement, sodass in DataGrid immer GridLines ohne CellSpacing angezeigt wird.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page language="VB" %>
<HTML>
  <HEAD>
    <title>Custom DataGrid - CreateControlStyle - VB.NET Example</title>
  </HEAD>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom DataGrid - CreateControlStyle - C# Example</h3>
            <aspSample:CustomDataGridCreateControlStyle id="Datagrid1" runat="server" AutoGenerateColumns="False">
                <Columns>
                    <asp:HyperLinkColumn Text="www.microsoft.com" Target="_blank" HeaderText="HyperLinks" href="https://www.microsoft.com" />
                </Columns>
            </aspSample:CustomDataGridCreateControlStyle>
    </form>
  </body>
</HTML>

...
Imports System.Web
Imports System.Security.Permissions

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

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

            ' Create a new TableStyle instance based on ViewState values.
            Dim style As New System.Web.UI.WebControls.TableStyle(ViewState)

            ' Show the GridLines with no CellSpacing.
            style.GridLines = System.Web.UI.WebControls.GridLines.Both
            style.CellSpacing = 0

            ' Return the Style
            Return style
        End Function
    End Class
End Namespace

<%@ Page language="c#" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<HTML>
  <HEAD>
    <title>Custom DataGrid - CreateControlStyle - C# Example</title>
  </HEAD>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom DataGrid - CreateControlStyle - C# Example</h3>
      <aspSample:CustomDataGridCreateControlStyle id="Datagrid1" runat="server" AutoGenerateColumns="False">
        <Columns>
          <asp:HyperLinkColumn Text="www.microsoft.com" Target="_blank" HeaderText="HyperLinks" href="https://www.microsoft.com" />
        </Columns>
      </aspSample:CustomDataGridCreateControlStyle>
    </form>
  </body>
</HTML>

...
using System.Web;
using System.Security.Permissions;
namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomDataGridCreateControlStyle : System.Web.UI.WebControls.DataGrid
    {
        protected override System.Web.UI.WebControls.Style CreateControlStyle()
        {
            // Create a new TableStyle instance based on ViewState values.
            System.Web.UI.WebControls.TableStyle style = new System.Web.UI.WebControls.TableStyle(ViewState);
            
            // Show the GridLines with no CellSpacing.
            style.GridLines = System.Web.UI.WebControls.GridLines.Both;
            style.CellSpacing = 0;

            // Return the Style
            return style;
        }
    }
}

<%@ Page language="VJ#" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<HTML>
  <HEAD>
    <title>Custom DataGrid - CreateControlStyle - VJ# Example</title>
  </HEAD>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom DataGrid - CreateControlStyle - VJ# Example</h3>
      <aspSample:CustomDataGridCreateControlStyle id="Datagrid1" runat="server" AutoGenerateColumns="False">
        <Columns>
          <asp:HyperLinkColumn Text="www.microsoft.com" Target="_blank" HeaderText="HyperLinks" href="https://www.microsoft.com" />
        </Columns>
      </aspSample:CustomDataGridCreateControlStyle>
    </form>
  </body>
</HTML>

...
package Samples.AspNet.JSL.Controls;

public class CustomDataGridCreateControlStyle
    extends System.Web.UI.WebControls.DataGrid
{
    protected System.Web.UI.WebControls.Style CreateControlStyle()
    {
        // Create a new TableStyle instance based on ViewState values.
        System.Web.UI.WebControls.TableStyle style = 
            new System.Web.UI.WebControls.TableStyle(get_ViewState());
        // Show the GridLines with no CellSpacing.
        style.set_GridLines(System.Web.UI.WebControls.GridLines.Both);
        style.set_CellSpacing(0);
        // Return the Style
        return style;
    } //CreateControlStyle
} //CustomDataGridCreateControlStyle

Plattformen

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

DataGrid-Klasse
DataGrid-Member
System.Web.UI.WebControls-Namespace
Style