File.WriteAllLines Method (String, IEnumerable<String>)
When it is called by trusted applications, creates a new file, writes a collection of strings to the file, and then closes the file.
Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Parameters
- path
- Type: System.String
The file to write to.
- contents
- Type: System.Collections.Generic.IEnumerable<String>
The lines to write to the file.
| Exception | Condition |
|---|---|
| ArgumentException |
path is a zero-length string, contains only white space, or contains one or more invalid characters defined by the GetInvalidPathChars method. |
| ArgumentNullException |
Either path or contents is null. |
| DirectoryNotFoundException |
path is invalid (for example, it is on an unmapped drive). |
| FileNotFoundException |
The file specified by path was not found. |
| IOException |
An I/O error occurred while opening the file. |
| PathTooLongException |
path exceeds 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. |
| NotSupportedException |
path is in an invalid format. |
| SecurityException |
The caller does not have the required permission. |
| UnauthorizedAccessException |
path specifies a file that is read-only. -or- This operation is not supported on the current platform. -or- path is a directory. -or- The caller does not have the required permission. |
For more information about trusted applications, see Trusted Applications.
If the target file already exists, it is overwritten.
You can use this method to create the contents for a collection class that takes an IEnumerable<T> in its constructor, such as a List<T>, or HashSet<T> class.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
