This documentation is archived and is not being maintained.

Uri.EscapeUriString Method

Converts a URI string to its escaped representation.

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

public static string EscapeUriString (
	string stringToEscape
public static String EscapeUriString (
	String stringToEscape
public static function EscapeUriString (
	stringToEscape : String
) : String
Not applicable.



The string to escape.

Return Value

A String that contains the escaped representation of stringToEscape.

Exception typeCondition


stringToEscape is a null reference (Nothing in Visual Basic).


The length of stringToEscape exceeds 32766 characters.

The EscapeUriString method converts all characters, except RFC 2396 reserved and unreserved characters, to their hexadecimal representation. All Unicode characters are converted to UTF-8 format before being escaped.

This method assumes that stringToEscape has no escape sequences in it.

The string is escaped according to RFC 2396. See this RFC for a definition of reserved and unreserved characters.

Use the EscapeUriString method to prepare an unescaped URI string to be a parameter to the Uri constructor.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0