When you create a Windows Application in Visual Studio , by default , the name of the exe is the same name as the Project .
Note that when you try to change or rename the project , still the exe name will be same .
To change the exe name of the Application Name , you must change the Assembly Name which defaults to the Project Name .
To change the exe name follow the steps below .
1. Right click on the project from solution explorer and click properties .
2. In the Project Properties Windows , Navigate to the Application tab .
3. Change the Name of the Assembly to the desired exe name in the “Assembly Name” field . and save the changes
4. Build the project Now and navigate to the project output folder(debug/bin) to see the exe with the new name 
