ControlBuilder.HasAspCode Property

Definition

Ottiene un valore che indica se il controllo contiene blocchi di codice.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

Property Value

Boolean

true se il controllo contiene almeno un blocco di codice; in caso contrario, false.true if the control contains at least one code block; otherwise, false.

Examples

In questo esempio viene eseguito l'override del metodo OnAppendToParentBuilder per controllare la proprietà ControlType per determinare il tipo di controllo a cui viene applicato il generatore.This example overrides the OnAppendToParentBuilder method to check the ControlType property to determine what type of control this builder is applied to. Se è un CustomTextBox, il generatore controlla se il valore della proprietà HasAspCode è incluso nel controllo.If it is a CustomTextBox, the builder checks whether the value of the HasAspCode property is included in the control. In tal caso, viene generata un'eccezione, in caso contrario viene chiamato il metodo HasBody.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

Applies to