MapPath Method (String, String, Boolean)
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HttpRequest.MapPath Method (String, String, Boolean)

Maps the specified virtual path to a physical path.

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

public string MapPath(
	string virtualPath,
	string baseVirtualDir,
	bool allowCrossAppMapping


Type: System.String

The virtual path (absolute or relative) for the current request.

Type: System.String

The virtual base directory path used for relative resolution.

Type: System.Boolean

true to indicate that virtualPath may belong to another application; otherwise, false.

Return Value

Type: System.String
The physical path on the server.


allowCrossMapping is false and virtualPath belongs to another application.


No HttpContext object is defined for the request.

Caution noteCaution:

The MapPath property potentially contains sensitive information about the hosting environment. The return value should not be displayed to users.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

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

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