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UrlEncode Method (String, TextWriter)
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HttpServerUtility.UrlEncode Method (String, TextWriter)

URL-encodes a string and sends the resulting output to a TextWriter output stream.

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

public void UrlEncode(
	string s,
	TextWriter output
)

Parameters

s
Type: System.String
The text string to encode.
output
Type: System.IO.TextWriter
The TextWriter output stream that contains the encoded string.

URL encoding ensures that all browsers will correctly transmit text in URL strings. Characters such as a question mark (?), ampersand (&), slash mark (/), and spaces might be truncated or corrupted by some browsers. As a result, these characters must be encoded in <a> tags or in query strings where the strings can be re-sent by a browser in a request string.

UrlEncode is a convenient way to access the HttpUtility.UrlEncode method at run time from an ASP.NET application. Internally, UrlEncode uses HttpUtility.UrlEncode to encode strings.

The following example encodes a string for transmission by HTTP. It encodes the string named TestString, which contains the text "This is a <Test String>.", and copies it into the string named EncodedString as "This+is+a+%3cTest+String%3e.".


String TestString = "This is a <Test String>.";
StringWriter writer = new StringWriter();
Server.UrlEncode(TestString, writer);
String EncodedString = writer.ToString();
   


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

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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