UrlPropertyAttribute Class
Defines the attribute that controls use to identify string properties containing URL values. This class cannot be inherited.
Namespace: System.Web.UI
Assembly: System.Web (in System.Web.dll)
The UrlPropertyAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
 | UrlPropertyAttribute() | Initializes a new default instance of the UrlPropertyAttribute class. |
| UrlPropertyAttribute(String) | Initializes a new instance of the UrlPropertyAttribute class, setting the Filter property to the specified string. |
| Name | Description | |
|---|---|---|
| Equals | Returns a value that indicates whether this instance is equal to a specified object. (Overrides Attribute.Equals(Object).) |
| GetHashCode | Returns the hash code for this instance. (Overrides Attribute.GetHashCode().) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
| Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
| _Attribute.GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
| _Attribute.GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
| _Attribute.GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
| _Attribute.Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
The UrlPropertyAttribute attribute is an attribute applied to a control property that represents a URL. In addition to marking a string property as representing a URL, the UrlPropertyAttribute attribute defines the Filter property that identifies specific file types that can be used to filter against the property.
The following code example demonstrates a class that implements a URL-specific property. In this code example, a UrlPropertyAttribute attribute is applied to the TargetUrl property of the CustomHyperLinkControl class. The attribute sets a specific file filter for ASP.NET files.
public class CustomHyperLinkControl : WebControl { public CustomHyperLinkControl() { } // The TargetUrl property represents the URL that // the custom hyperlink control navigates to. [UrlProperty("*.aspx")] public string TargetUrl { get { string s = (string)ViewState["TargetUrl"]; return ((s == null) ? String.Empty : s); } set { ViewState["TargetUrl"] = value; } } // The Text property represents the visible text that // the custom hyperlink control is displayed with. public virtual string Text { get { string s = (string)ViewState["Text"]; return ((s == null) ? String.Empty : s); } set { ViewState["Text"] = value; } } // Implement method to render the control. }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
