FileInfo.CreateText Method
.NET Framework 4
Creates a StreamWriter that writes a new text file.
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| UnauthorizedAccessException |
The file name is a directory. |
| IOException |
The disk is read-only. |
| SecurityException |
The caller does not have the required permission. |
The following example demonstrates the CreateText method.
using System; using System.IO; class Test { public static void Main() { string path = @"c:\temp\MyTest.txt"; FileInfo fi = new FileInfo(path); if (!fi.Exists) { //Create a file to write to. using (StreamWriter sw = fi.CreateText()) { sw.WriteLine("Hello"); sw.WriteLine("And"); sw.WriteLine("Welcome"); } } //Open the file to read from. using (StreamReader sr = fi.OpenText()) { string s = ""; while ((s = sr.ReadLine()) != null) { Console.WriteLine(s); } } } } //This code produces output similar to the following; //results may vary based on the computer/file structure/etc.: // //Hello //And //Welcome
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FileIOPermission
for reading and writing files. Associated enumerations: FileIOPermissionAccess.Read, FileIOPermissionAccess.Write
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
