ControlBuilder.HasAspCode ControlBuilder.HasAspCode ControlBuilder.HasAspCode ControlBuilder.HasAspCode Property

Definition

Ruft einen Wert ab, der angibt, ob das Steuerelement Codeblöcke enthält.Gets a value indicating whether the control contains any code blocks.

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

Eigenschaftswert

true, wenn das Steuerelement mindestens einen Codeblock enthält, andernfalls false.true if the control contains at least one code block; otherwise, false.

Beispiele

In diesem Beispiel wird die OnAppendToParentBuilder -Methode überschrieben ControlType , um die-Eigenschaft zu überprüfen und zu bestimmen, auf welche Art von Steuerelement dieser Generator angewendetThis example overrides the OnAppendToParentBuilder method to check the ControlType property to determine what type of control this builder is applied to. Wenn es sich um CustomTextBoxeine handelt, prüft der Generator, ob der HasAspCode Wert der-Eigenschaft im-Steuerelement enthalten ist.If it is a CustomTextBox, the builder checks whether the value of the HasAspCode property is included in the control. Wenn dies der Fall ist, wird eine Ausnahme ausgelöst, HasBody wenn nicht die-Methode aufgerufen wird.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

Gilt für: