CheckBoxList.CreateControlStyle 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
创建由 CheckBoxList 控件在内部用来实现所有与样式有关的属性的样式对象。
protected:
override System::Web::UI::WebControls::Style ^ CreateControlStyle();protected override System.Web.UI.WebControls.Style CreateControlStyle ();override this.CreateControlStyle : unit -> System.Web.UI.WebControls.StyleProtected Overrides Function CreateControlStyle () As Style返回
包含控件的样式属性的 Style。
示例
下面的代码示例演示如何重写CreateControlStyle自定义服务器控件中的方法，以便始终返回控件类CheckBoxList的新实例TableStyle。
<%@ 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
注解
该方法 CreateControlStyle 主要由派生自类的 CheckBoxList 自定义控件中的控件开发人员使用。