MakeRelativeUri Method

Uri.MakeRelativeUri Method

Determines the difference between two Uri instances.

Namespace:  System
Assembly:  System (in System.dll)

Public Function MakeRelativeUri ( _
	uri As Uri _
) As Uri


Type: System.Uri
The URI to compare to the current URI.

Return Value

Type: System.Uri
If the hostname and scheme of this URI instance and uri are the same, then this method returns a relative Uri that, when appended to the current URI instance, yields uri.
If the hostname or scheme is different, then this method returns a Uri that represents the uri parameter.


uri is Nothing.


This instance represents a relative URI, and this property is valid only for absolute URIs.

The following table shows the URI instance, toUri, and the results of calling MakeRelativeUri.

Current URI instance


Return value




User information, if present in the URI, is ignored.

The following example creates 2 Uri instances. The difference in the path information is written to the console.

    ' Create a base Uri.
    Dim address1 As New Uri("")

    ' Create a new Uri from a string.
    Dim address2 As New Uri("")

    ' Determine the relative Uri.  
    Console.WriteLine("The difference is {0}", address1.MakeRelativeUri(address2))

End Sub 'SampleMakeRelative

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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