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StreamWriter.WriteLine("Hello from streamWriter.Flush() Ĭonsole.WriteLine("Error writing to TEMP file: " + ex.Message) Īs you can see all we are doing here is opening the temp file using the StreamWriter class and then writing to it. StreamWriter streamWriter = File.AppendText(tmpFile) Private static void UpdateTmpFile(string tmpFile) Now let’s write some data to our temp file: The temp file’s name is automatically generated and looks something like this: tmpBD28.tmp. NET Framework will optimize the way it uses your temp file if set.Īnd that’s all you need to do to create a temp file. You can work without setting this attribute, but it is recommended to set it since the. Then we are creating a FileInfo object and setting the Temporary attribute of our temp file. When called, this method will automatically create the temp file in the correct folder according to your version of Windows. to optimize the use of Temporary files by keeping them cached in memory.įileInfo.Attributes = FileAttributes.Temporary Ĭonsole.WriteLine("TEMP file created at: " + fileName) Ĭonsole.WriteLine("Unable to create TEMP file or set its attributes: " + ex.Message) Īs you can see in the above code we are calling the GetTempFileName method of the Path class to create our temp file. Although this is not completely necessary, the.

Set the Attribute property of this file to Temporary. Craete a FileInfo object to set the file's attributesįileInfo fileInfo = new FileInfo(fileName) a 0-byte file and returns the name of the created file. Note that the GetTempFileName() method actually creates Get the full name of the newly created Temporary file. In this method we will use the System.IO.Path class to create our temp file. NET Framework makes creating and using temp files a breeze, so let me show you how to use them.Ĭreate a new Console Application and add a method called CreateTmpFile. tmp extension and by default are stored in C:\Users\\AppData\Local\Temp. In Microsoft Windows, temp files end with the. Basically, it is up to the developer to decide what should be kept within his/her application’s temp files. Other applications might use temp files to store large amounts of data which would otherwise occupy too much memory. For example Microsoft Office uses temp files to store backups of documents being created or edited. There is no fixed rule which specifies what this data should be, but generally temporary files (or temp files) are used for storing ‘ work data‘. What exactly is a temporary file? Put simply, a temporary file is a file used by an application for storing temporary data.