Uri.MakeRelativeUri Method

July 28, 2014

Determines the difference between two Uri instances.

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

public Uri MakeRelativeUri(
	Uri uri
)

Parameters

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

ExceptionCondition
InvalidOperationException

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

toUri

Return value

http://www.contoso.com/

http://www.contoso.com/test/test.htm

test/test.htm

http://www.contoso.com/test1/

http://www.contoso.com/

../

http://www.contoso.com:8000/

http://www.contoso.com/test/test.htm

http://www.contoso.com/test/test.htm

http://username@www.contoso.com/

http://www.contoso.com/test1/test1.txt

test1/test1.txt

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.
Uri address12 = new Uri("http://www.contoso.com/");

// Create a new Uri from a string.
Uri address22 = new Uri("http://www.contoso.com/index.htm?date=today"); 

// Determine the relative Uri.  
outputBlock.Text += "The difference is ";
outputBlock.Text += address12.MakeRelativeUri(address22);
outputBlock.Text += "\n";


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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