File is being used by another progam

Question

so, i have this info that i want to be written into a new file, but only if the file does't exist, 

 

string farmSettings = @"Includes/Settings/" + arrResult[1] + ".json";

if (!File.Exists(farmSettings))

using (StreamWriter sw = File.CreateText(farmSettings))

{

TextWriter tw = new StreamWriter(farmSettings);

tw.WriteLine("{");

tw.WriteLine("ID: " + arrResult[0]);

tw.WriteLine("res1: False");

tw.WriteLine("res2: False");

tw.WriteLine("res3: False");

tw.WriteLine("res4: False");

tw.WriteLine("res5: False");

tw.WriteLine("act: False");

tw.WriteLine("Getaway: False");

tw.WriteLine("vip: False");

tw.WriteLine("}");

tw.Close();

}

 

however, its blocking the one timw writing because the file is being used by another program.

 

what is wrong with my code?