| FileReadAllText Method (String) |
Opens a text file, reads all lines of the file, and then closes the file.
Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0
SyntaxC#
public static string ReadAllText( string path )
Parameters
- path
- Type: SystemString
The file to open for reading.
Return Value
Type: StringA string containing all lines of the file.
Exceptions| Exception | Condition |
|---|---|
| ArgumentException | path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars. |
| ArgumentNullException | path is null. |
| PathTooLongException | 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. |
| DirectoryNotFoundException | The specified path is invalid (for example, it is on an unmapped drive). |
| IOException | An I/O error occurred while opening the file. |
| UnauthorizedAccessException | path specified a file that is read-only.-or- This operation is not supported on the current platform.-or- path specified a directory.-or- The caller does not have the required permission. |
| FileNotFoundException | The file specified in path was not found. |
| NotSupportedException | path is in an invalid format. |
| SecurityException | The caller does not have the required permission. |
See Also