Uri.EscapeUriString Method

Converts a URI string to its escaped representation.

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

public static string EscapeUriString(
	string stringToEscape


Type: System.String
The string to escape.

Return Value

Type: System.String
A String that contains the escaped representation of stringToEscape.


stringToEscape is null.


The length of stringToEscape exceeds 32766 characters.

The EscapeUriString method converts all characters, except RFC 3986 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 3986. 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.


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.