Parameters

path

A string containing the name of the file to be opened for reading.

Returns

A read-only System.IO.FileStream containing the contents of the specified file.

Permissions

Type	Reason
System.Security.Permissions.FileIOPermission	Requires permission to read the specified file. See System.Security.Permissions.FileIOPermissionAccess.Read.

Exceptions

Type	Reason
System.Security.SecurityException	The caller does not have the required permission.
ArgumentException	path is a zero-length string, contains only white space, or contains one or more implementation-specific invalid characters.
System.IO.FileNotFoundException	path was not found.
ArgumentNullException	path is null.
System.IO.DirectoryNotFoundException	The directory information specified in path was not found.
UnauthorizedAccessException	The caller does not have the required permission.
System.IO.PathTooLongException	The length of path or the absolute path information for path exceeds the system-defined maximum length.

Remarks

This method is equivalent to System.IO.FileStream (path, FileMode.Open, FileAccess.Read, FileShare.Read ).

The path argument is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory.

Note: To obtain the current working directory, see Directory.GetCurrentDirectory.

Requirements

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0