[DefaultValueAttribute(null)]
[BrowsableAttribute(false)]
[PersistenceModeAttribute(PersistenceMode.InnerProperty)]
[DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content)]
[TemplateInstanceAttribute(TemplateInstance.Single)]
public ITemplate ContentTemplate { get; set; }

<DefaultValueAttribute(Nothing)> _
<BrowsableAttribute(False)> _
<PersistenceModeAttribute(PersistenceMode.InnerProperty)> _
<DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content)> _
<TemplateInstanceAttribute(TemplateInstance.Single)> _
Public Property ContentTemplate As ITemplate
	Get
	Set

Use the ContentTemplate property to control the contents of the dialog window. To specify a template for the dialog, reset the ContentUrl property, place the <ContentTemplate> tags between the opening and closing tags of the control. You can then list the contents of the template between the opening and closing <ContentTemplate> tags.