Passing paramters from event handler to another function

Question

How can i pass a var parameter from event handler to another function

 I am watching a directory and doing an event handler when file is created go to the function ReadData. So how can i pass the values of tempfilepath and fileName to ReadData function?. thanks in advance

static void OnCreated(object source, FileSystemEventArgs e)
       {
           int P_Count = 0;
           // Specify what is done when a file is created
           Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);


           SomeGlobalVariables.fileName = e.FullPath;
           SomeGlobalVariables.counter++;


           string[] fileArray = new string[SomeGlobalVariables.counter];
           for (int count = 0; count <= fileArray.Length - 1; count++)
           {

               fileArray[count] = SomeGlobalVariables.fileName;
               SomeGlobalVariables.filenameslist.Add(fileArray[count]);
               P_Count = P_Count + 1;                                               // Number of added files


               Console.WriteLine ("Number of Files in the list = " + P_Count);

               foreach (var filenames in SomeGlobalVariables.filenameslist)
                   {
                       var fileName = filenames;
                       var Name_File = Path.GetFileName(fileName);
                       var tempfilepath = (@"C:\Users\" + Name_File + ".CSV");


                   }



           }

static void ReadData()
   {



       using (System.IO.StreamWriter tempfile = new System.IO.StreamWriter(tempfilepath))
       {

           System.IO.StreamReader reader = new System.IO.StreamReader(fileName);
           }}