如何在Visual C＃中清除数组

I have an array of ints. They start out with 0, then they get filled with some values. Then I want to set all the values back to 0 so that I can use it again, or else just delete the whole array so that I can redeclare it and start with an array of all 0s. I have an array of ints. They start out with 0,