c# - Cannot access to simple file "because it is being used by another process" -

i have simple method in class edidocument used load xml :

    /// <summary>     /// method used load specific target file template     /// </summary>     /// <param name="filepath">file path</param>     /// <returns>loading status</returns>     public bool load(string filepath)     {         //file exists         bool returnvalue = file.exists(filepath);         //file xml         returnvalue &= path.getextension(filepath).equals(".xml");         //if file valid         if (returnvalue)         {             xmlreader reader = xmlreader.create(filepath);             //load document             this._xmldoc = xdocument.load(reader);             //load complete             returnvalue &= (this._xmldoc != null);         }         //end of method         return returnvalue;     } 

i have unit test method :

    /// <summary>     /// test success on load xml document     /// </summary>     [testmethod]     public void testloadxml_success()     {         file.create("xml.xml");         //create document         edidocument doc = new edidocument();         //load wrong         bool result = doc.load("xml.xml");         //test         assert.istrue(result);     } 

i have exception when start unit test :

test method edidocumenttest.testloadxml_success threw exception: system.io.ioexception: process cannot access file 'c:......\debug\xml.xml' because being used process.

i have googled issue , have tried multiple solution xmlreader, streamreader... have same exception...

my question : method load fix exception?

thanks

file.create returns stream file, keeps handle open it. need close file first. should work:

file.create("xml.xml").close();

see question more details: why file.create needed closed?