ControlBuilder.InDesigner 属性

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

返回 ControlBuilder 是否正在设计器中运行。

protected:
 property bool InDesigner { bool get(); };

protected bool InDesigner { get; }

member this.InDesigner : bool

Protected ReadOnly Property InDesigner As Boolean

属性值

Boolean

如果 ControlBuilder 正在设计器中运行，则为 true；否则为 false。

示例

以下示例在调用该方法时NeedsTagInnerText使用InDesigner该属性。 当控件附加此生成器时，该方法 NeedsTagInnerText 确定控件是否在设计时通过设计器访问该控件。 返回 NeedsTagInnerText 属性的值 InDesigner ，然后 SetTagInnerText 调用该方法。 如果属性 InDesigner 设置为 false，则会引发一个 Exception 。 否则，在调用时 SetTagInnerText 返回控件的内部文本。

[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;
    }
}

<AspNetHostingPermission(SecurityAction.Demand, _
  Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class MyControlControlBuilder
  Inherits ControlBuilder
    
    Private _innerText As String
    
    Overrides Public Function NeedsTagInnerText() As Boolean
      Return InDesigner
    End Function
    
    Overrides Public Sub SetTagInnerText(ByVal text As String)        
       If InDesigner = False
         Throw New System.Exception("The control is not in design mode.")
       Else
         _innerText = text
       End If
    End Sub
    
End Class