FileIOPermission Constructor (FileIOPermissionAccess, String)


Initializes a new instance of the FileIOPermission class with the specified access to the designated file or directory.

Namespace:   System.Security.Permissions
Assembly:  mscorlib (in mscorlib.dll)

public FileIOPermission(
	FileIOPermissionAccess access,
	string path


Type: System.Security.Permissions.FileIOPermissionAccess

A bitwise combination of the FileIOPermissionAccess enumeration values.

Type: System.String

The absolute path of the file or directory.

Exception Condition

The access parameter is not a valid value of FileIOPermissionAccess.


The path parameter is not a valid string.


The path parameter does not specify the absolute path to the file or directory.

This constructor allows only one of the FileIOPermissionAccess values to be specified for the specified file or directory. Use the AddPathList method to define complex permissions.

The following code example shows the use of the FileIOPermission.FileIOPermission(FileIOPermissionAccess, String) constructor to create a new instance of the FileIOPermission class, which provides complete access to the C:\test_r file.

FileIOPermission f2 = new FileIOPermission(FileIOPermissionAccess.Read, "C:\\test_r");
f2.AddPathList(FileIOPermissionAccess.Write | FileIOPermissionAccess.Read, "C:\\example\\out.txt");
catch (SecurityException s)

.NET Framework
Available since 1.1
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