C#: How can I make an integer negative?

How can I make an integer negative in C#?

abc = 5开发者_JS百科645307;
// how to make abc -5645307 ?

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Maybe I'm missing something:

abc = -abc;

If you want it to be negative whether it was negative beforehand or not, you would use:

abc = -Math.Abs(abc);

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This is how you can convert your int value to minus in c#

abc = abc > 0 ? abc*(-1) : abc;

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how about....

xyz = Math.Abs(xyz) * (-1)