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HtmlTextWriter.EncodeUrl Method

Performs minimal URL encoding by converting spaces in the specified URL to the string "%20".

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

protected string EncodeUrl(
	string url


Type: System.String
A string containing the URL to encode.

Return Value

Type: System.String
A string containing the encoded URL.

URL encoding of a character consists of a percent symbol (%), followed by the two-digit hexadecimal representation (case-insensitive) of the ISO-Latin code point for the character. The hexadecimal representation of a space is 20.

The following code example demonstrates how to call the EncodeUrl method to convert any spaces in the URL that is passed as a parameter in an AddAttribute method call.

// If an <anchor> element is rendered and an href
// attribute has not been defined, call the AddAttribute
// method to add an href attribute
// and set it to
// Use the EncodeUrl method to convert any spaces to %20.
if (TagKey == HtmlTextWriterTag.A)
    if (!IsAttributeDefined(HtmlTextWriterAttribute.Href))
        AddAttribute("href", EncodeUrl(""));

.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.