ControlBuilder.InDesigner Property

Definition

Namespace:

System.Web.UI

Assembly:

System.Web.dll

Returns whether the ControlBuilder is running in the designer.

C#

protected bool InDesigner { get; }

Property Value

Boolean

true if the ControlBuilder is running in the designer; otherwise, false.

Examples

The following example uses the InDesigner property when the NeedsTagInnerText method is called. When a control has this builder attached to it, the NeedsTagInnerText method determines whether the control is being accessed at design-time through a designer. The NeedsTagInnerText returns the value of the InDesigner property, and then the SetTagInnerText method is called. If the InDesigner property is set to false, an Exception is thrown. Otherwise, the inner text of the control is returned on the SetTagInnerText call.

C#

[AspNetHostingPermission(SecurityAction.Demand, 
    Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class MyControlControlBuilder : ControlBuilder
{
    private string _innerText;

    public override bool NeedsTagInnerText()
    {
        return InDesigner;
    }

    public override void SetTagInnerText(string text)
    {
        if (!InDesigner)
            throw new Exception("The control is not in design mode.");
        else
            _innerText = text;
    }
}

Applies to