In this case you can sizeof. sizeof returns the amount of Bytes the element is using. So the idea is to find the sizeof(array) (in your case which will be 20) and the sizeof(int). The size of an int is 4 Bytes.
So now you can use the Math and figure out how to find the array size using this two values.
I Developed application in C# with crystal reports and created setup file in third party (Advance) Installer.When i installed my application on client system application is working but ...