Gets or sets the URL to an alternate image displayed in an System.Web.UI.WebControls.ImageField object when the value of the field specified by the ImageField.DataImageUrlField property is null.
Syntax
[System.ComponentModel.Editor("System.Web.UI.Design.ImageUrlEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
[System.ComponentModel.DefaultValue("")]
public virtual string NullImageUrl { set; get; }
Value
Documentation for this section has not yet been entered.
Remarks
When the value of the field specified by the ImageField.DataImageUrlField property is null, an image cannot be displayed in an System.Web.UI.WebControls.ImageField object. Use the ImageField.NullImageUrl property to specify the URL to an alternate image to display. The alternate image is usually an image that indicates that the normal image is not available or cannot be found.
As an alternative, you can simply display text when the field value is null by setting the ImageField.NullDisplayText property instead of this property. If the ImageField.NullImageUrl and ImageField.NullDisplayText properties are both set, the ImageField.NullImageUrl property has precedence.
Requirements
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0