Uri::IsBaseOf Method
Namespace: System
Assembly: System (in System.dll)
Parameters
- uri
- Type: System::Uri
The specified Uri instance to test.
Return Value
Type: System::Booleantrue if the current Uri instance is a base of uri; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | uri is nullptr. |
IsBaseOf is used to compare the current Uri instance to a specified Uri to determine whether this URI is a base for the specified Uri. When comparing two Uri objects to determine a base relationship, the user information (UserInfo) is not evaluated. When comparing two URIs (uri1 and uri2), uri1 is the base of uri2 if, when you ignore everything in uri2 after the last slash (/), the two URIs are identical. Using http://host/path/path/file?query as the base URI, the following table shows whether it is a base for other URIs.
URI | http://host/path/path/file?query is base of |
|---|---|
http://host/path/path/file/ | yes |
http://host/path/path/#fragment | yes |
http://host/path/path/MoreDir/" | yes |
http://host/path/path/OtherFile?Query | yes |
http://host/path/path/ | yes |
http://host/path/path/file | yes |
http://host/path/path | no |
http://host/path/path?query | no |
http://host/path/path#Fragment | no |
http://host/path/path2/ | no |
http://host/path/path2/MoreDir | no |
http://host/path/File | no |
This example creates a Uri instance that represents a base Uri instance. It then creates a second Uri instance from a string. It calls IsBaseOf to determine whether the base instance is the base of the second instance. The outcome is written to the console.
// Create a base Uri. Uri^ baseUri = gcnew Uri( "http://www.contoso.com/" ); // Create a new Uri from a string. Uri^ uriAddress = gcnew Uri( "http://www.contoso.com/index.htm?date=today" ); // Determine whether BaseUri is a base of UriAddress. if ( baseUri->IsBaseOf( uriAddress ) ) Console::WriteLine( "{0} is the base of {1}", baseUri, uriAddress );
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.
