File.OpenRead Method (String)
Opens an existing file for reading.
Assembly: mscorlib (in mscorlib.dll)
path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars.
path is null.
The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
The specified path is invalid, (for example, it is on an unmapped drive).
path specified a directory.
The caller does not have the required permission.
The file specified in path was not found.
path is in an invalid format.
An I/O error occurred while opening the file.
The path parameter is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory. To obtain the current working directory, see GetCurrentDirectory.
For a list of common I/O tasks, see Common I/O Tasks.
Available since 10
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0