How to access on file system in WCF Service

Hi Experts I Have a WCF Service that Host it on IIS.I want to write something in a text file using my service but I get an exception 开发者_开发百科:"Access denied on (file path)..."

how I can get access to file system? thanks

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You have to give the account the IIS is running under write access to the directory or file you're trying to write to. Note that this can be a security risk (that's why IIS doesn't have permissions to do this by default).