Is there a new temp path behaviour in ArcGIS 10.1?

FossiG_

Hi,

apparently since version 10.1 ArcMap creates its own temporary folder in the systems temp path. One folder for each ArMap-Process. The folders created look like this (where ...\Temp\ represents the systems temp path aka %temp%).

...\Temp\arcB\
...\Temp\arc27\
...\Temp\arc29\
...\Temp\arc2B\

This itself would be no problem, but it looks like ArcMap also changes the systems %temp% environment variable for its process.

If an AddIn determines the temp path it no longer gets the systems path, but rather the temp-directory of the current ArcMap-process it was called from, eg. ...\Temp\arc27\ instead of ...\Temp\

c#-Snippet used in our AddIns:

string tempPath = System.IO.Path.GetTempPath();

Is there any way, to get the old behaviour back?

The new directory is not a problem but why must ArcMap dynamically change the %temp% environment variable?

TIA,
Fossi

Anonymous User

As a workaround you can get the environment variables through a different call.

Compare the following outputs

MessageBox.Show("temppath: " + Path.GetTempPath());
MessageBox.Show(Environment.GetEnvironmentVariable("TEMP",EnvironmentVariableTarget.User));

Change EnvironmentVariableTarget to user, process or machine as required.
Hope this helps.