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HasAspCode Property

ControlBuilder.HasAspCode Property

Gets a value indicating whether the control contains any code blocks.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

public virtual bool HasAspCode { get; }

Property Value

Type: System.Boolean
true if the control contains at least one code block; otherwise, false.

This example overrides the OnAppendToParentBuilder method to check the ControlType property to determine what type of control this builder is applied to. If it is a CustomTextBox, the builder checks whether the value of the HasAspCode property is included in the control. 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();
			}
		}
	}
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
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