Articolo
11/18/2011

File.Exists Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

When it is called by trusted applications, determines whether the specified file exists.

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

Syntax

'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function Exists ( _
    path As String _
) As Boolean

[SecuritySafeCriticalAttribute]
public static bool Exists(
    string path
)

Parameters

path
Type: System.String
The file to check.

Return Value

Type: System.Boolean
true if the caller has the required permissions and path contains the name of an existing file; otherwise, false. This method also returns false if path is nulla null reference (Nothing in Visual Basic), an invalid path, or a zero-length string. If the caller does not have sufficient permissions to read the specified file, no exception is thrown and the method returns false regardless of the existence of path.

Remarks

Platform Notes

Silverlight for Windows Phone

This member has a SecurityCriticalAttribute attribute on Silverlight for Windows Phone, because the attribute was present in Silverlight 3. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Version Information

Silverlight

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

Platforms

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

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