ControlBuilder.HasAspCode 屬性

定義

取得值,指出控制項是否包含任何程式碼區塊。Gets a value indicating whether the control contains any code blocks.

public:
 property bool HasAspCode { bool get(); };
public:
 virtual property bool HasAspCode { bool get(); };
public bool HasAspCode { get; }
public virtual bool HasAspCode { get; }
member this.HasAspCode : bool
Public ReadOnly Property HasAspCode As Boolean
Public Overridable ReadOnly Property HasAspCode As Boolean

屬性值

如果控制項包含至少一個程式碼區塊,則為 true,否則為 falsetrue if the control contains at least one code block; otherwise, false.

範例

這個範例會覆寫 OnAppendToParentBuilder 方法來檢查 ControlType 屬性,以決定要套用此產生器的控制項類型。This example overrides the OnAppendToParentBuilder method to check the ControlType property to determine what type of control this builder is applied to. 如果是 CustomTextBox,產生器會檢查控制項中是否包含 HasAspCode 屬性的值。If it is a CustomTextBox, the builder checks whether the value of the HasAspCode property is included in the control. 若是如此,則會擲回例外狀況(如果不是呼叫 HasBody 方法)。If so, an exception is thrown, if not the HasBody method is called.

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

namespace ASPNET.Samples
{
    [
    AspNetHostingPermission(SecurityAction.Demand,
        Level=AspNetHostingPermissionLevel.Minimal)
    ]
    public class AppendControlBuilder : ControlBuilder
    {
        // Override the OnAppendToParentBuilder method.
        public override void OnAppendToParentBuilder(ControlBuilder parentBuilder)
        {
            // Check whether the type of the control this builder
            // is applied to is CustomTextBox. If so, check whether
            // ASP code blocks exist in the control. If so, call
            // throw an Exception, if not, call the HasBody method.        
            if (ControlType == Type.GetType("CustomTextBox"))
            {
                if (HasAspCode)
                    throw new Exception("This control cannot contain code blocks.");
                else
                    HasBody();
            }
        }
    }
}
Imports System.Web.UI
Imports System.Web
Imports System.Security.Permissions

Namespace ASPNET.Samples

   <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
   Public NotInheritable Class AppendControlBuilder
      Inherits ControlBuilder

      ' Override the OnAppendToParentBuilder method.
      Overrides Public Sub OnAppendToParentBuilder( _
         ByVal parentBuilder As ControlBuilder _
      )
            ' Check whether the type of the control this builder
            ' is applied to is CustomTextBox. If so, check whether
            ' ASP code blocks exist in the control. If so, call
            ' throw an Exception, if not, call the HasBody method.        
            If ControlType Is Type.GetType("CustomTextBox") Then
                If HasAspCode = True Then
                    Throw New Exception("This control cannot contain code blocks.")
                Else
                    HasBody()
                End If
            End If

        End Sub

   End Class

End Namespace

適用於