Writing File to Temp Folder

Question

I want to use StreamWriter to write a file to the temp folder   It might be a different path on each PC  so I tried using  temp  SaveFile txt but it didn t work   How can I save to the temp folder  using environmental variables   And for example  can I use an environmental variable for storing files in  appdata

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System IO Path GetTempPath     The path specified by the TMP environment variable  The path specified by the TEMP environment variable  The path specified by the USERPROFILE environment variable  The Windows directory

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string result   Path GetTempPath      https   docs microsoft com en-us dotnet api system io path gettemppath

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You can dynamically retrieve a temp path using as following and better to use it instead of using hard coded string value for temp location It will return the temp folder or temp file as you want    string filePath   Path Combine Path GetTempPath    SaveFile txt      or  Path GetTempFileName

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The Path class is very useful here  You get two methods called Path GetTempFileName Path GetTempPath that could solve your issue So for example you could write   if you don t mind the exact file name  using StreamWriter sw   new StreamWriter Path GetTempFileName           sw WriteLine  quot Your error message quot       Or if you need to set  your file name string myTempFile   Path Combine Path GetTempPath     quot SaveFile txt quot    using StreamWriter sw   new StreamWriter myTempFile          sw WriteLine  quot Your error message quot

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For  appdata  take a look to  Environment GetFolderPath Environment SpecialFolder ApplicationData

[c#] Writing File to Temp Folder

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