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CheckBoxDesigner::GetDesignTimeHtml Method
Visual Studio 2010
Gets the markup that is used to represent the control at design time.
Assembly: System.Design (in System.Design.dll)
The following code example overrides the GetDesignTimeHtml method. If the CheckBox::Text property has not been set previously, a call to this method sets it to a string and displays that string on the design surface. If the Text property has already been set, the existing property value is displayed.
' Override the GetDesignTimeHtml method to display a border on the ' control if the BorderStyle property has not been set by the user. Public Overrides Function GetDesignTimeHtml() As String Dim sampleCheckBox As SampleCheckBox = CType(Component, _ SampleCheckBox) Dim designTimeHtml As String = Nothing ' Check the control's BorderStyle property. If (sampleCheckBox.BorderStyle = BorderStyle.NotSet) Then ' Save the current value of the BorderStyle property. Dim oldBorderStyle As BorderStyle = _ sampleCheckBox.BorderStyle ' Change the value of the BorderStyle property and ' generate the design-time HTML. Try sampleCheckBox.BorderStyle = BorderStyle.Groove designTimeHtml = MyBase.GetDesignTimeHtml() ' If an exception occurs, call the GetErrorDesignTimeHtml ' method. Catch ex As Exception designTimeHtml = GetErrorDesignTimeHtml(ex) ' Restore the BorderStyle property to its original value. Finally sampleCheckBox.BorderStyle = oldBorderStyle End Try Else designTimeHtml = MyBase.GetDesignTimeHtml() End If Return designTimeHtml End Function
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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