.NET Framework Class Library
ControlDesignerSetEditableDesignerRegionContent Method

Specifies the content for an editable region of the control at design time.

Namespace:   System.Web.UI.Design
Assembly:  System.Design (in System.Design.dll)
Public Overridable Sub SetEditableDesignerRegionContent ( _
	region As [%$TOPIC/3y655tak_en-us_VS_110_1_0_0_0_0%], _
	content As [%$TOPIC/3y655tak_en-us_VS_110_1_0_0_0_1%] _
public virtual void SetEditableDesignerRegionContent(
	[%$TOPIC/3y655tak_en-us_VS_110_1_0_1_0_0%] region,
	[%$TOPIC/3y655tak_en-us_VS_110_1_0_1_0_1%] content
virtual void SetEditableDesignerRegionContent(
	[%$TOPIC/3y655tak_en-us_VS_110_1_0_2_0_0%]^ region, 
	[%$TOPIC/3y655tak_en-us_VS_110_1_0_2_0_1%]^ content
abstract SetEditableDesignerRegionContent : 
        region:[%$TOPIC/3y655tak_en-us_VS_110_1_0_3_0_0%] * 
        content:[%$TOPIC/3y655tak_en-us_VS_110_1_0_3_0_1%] -> unit  
override SetEditableDesignerRegionContent : 
        region:[%$TOPIC/3y655tak_en-us_VS_110_1_0_3_0_2%] * 
        content:[%$TOPIC/3y655tak_en-us_VS_110_1_0_3_0_3%] -> unit
public function SetEditableDesignerRegionContent(
	region : [%$TOPIC/3y655tak_en-us_VS_110_1_0_4_0_0%], 
	content : [%$TOPIC/3y655tak_en-us_VS_110_1_0_4_0_1%]


Type: System.Web.UI.DesignEditableDesignerRegion

An editable design region contained within the control.

Type: SystemString

The content to assign for the editable design region.


Classes deriving from the ControlDesigner class can support region-based editing on the design surface and override the SetEditableDesignerRegionContent method to set the content for a specified region.


The following code example shows how to get a reference to the design host, and then use the reference to create a ControlParser object that turns content into an instance of the ITemplate interface and assigns the ITemplate instance to the appropriate view.

' Create a template from the content string and put it  
' in the selected view. Called by the designer host? 
Public Overrides Sub SetEditableDesignerRegionContent(ByVal region As EditableDesignerRegion, ByVal content As String)
    If IsNothing(content) Then 
    End If 

    ' Get a reference to the designer host 
    Dim host As IDesignerHost = CType(Component.Site.GetService(GetType(IDesignerHost)), IDesignerHost)
    If Not IsNothing(host) Then 
        ' Create a template from the content string 
        Dim template As ITemplate = ControlParser.ParseTemplate(host, content)

        ' Determine which region should get the template 
        If region.Name.EndsWith("0") Then
            myControl.View1 = template
        ElseIf region.Name.EndsWith("1") Then
            myControl.View2 = template
        End If 

    End If 
End Sub
// Create a template from the content string and   
// put it in the selected view. 
public override void SetEditableDesignerRegionContent(EditableDesignerRegion region, string content)
    if (content == null)

    // Get a reference to the designer host
    IDesignerHost host = (IDesignerHost)Component.Site.GetService(typeof(IDesignerHost));
    if (host != null)
        // Create a template from the content string
        ITemplate template = ControlParser.ParseTemplate(host, content);

        // Determine which region should get the template 
        // Either 'Content0' or 'Content1' 
        if (region.Name.EndsWith("0"))
            myControl.View1 = template;
        else if (region.Name.EndsWith("1"))
            myControl.View2 = template;
Version Information

.NET Framework

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