<ObsoleteAttribute("Use the LayerFormat property")>
<ResDescriptionAttribute("This property is no longer used.")>
<BrowsableAttribute(False)>
<DefaultValueAttribute()>
<NotifyParentPropertyAttribute(True)>
Public Property DefaultImage As String

Visual Basic (Usage)	Copy Code
Dim instance As MapTips Dim value As String   instance.DefaultImage = value   value = instance.DefaultImage

[ObsoleteAttribute("Use the LayerFormat property")]
[ResDescriptionAttribute("This property is no longer used.")]
[BrowsableAttribute(false)]
[DefaultValueAttribute()]
[NotifyParentPropertyAttribute(true)]
public string DefaultImage {get; set;}

Return Value

This property is set by default to an image within the Web ADF embedded resources. It may be overridden to use a different image by setting the URL so that the client can retrieve the image. For example, if you add an image to the images folder of your Web application called maptip.gif, this property may be set to "images/maptip.gif". Do not use the "~/" notation for ASP.NET applications, since the URL is sent directly to the client.

For best results, all images used for the maptip icon should be the same size: DefaultImage, HoverImage, and ClickImage.

Reference