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c# - Copy one 2D array to another 2D array

I used this code to copy one 2D array to another 2D array:

Array.Copy(teamPerformance, 0,tempPerformance,0, teamPerformance.Length);

However, when I change some data in tempPerformance then these changes also apply to teamPerformance.
What should I do to control that?

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You need Clone()

double[,] arr = 
{
   {1, 2},
   {3, 4}
};
double[,] copy = arr.Clone() as double[,];
copy[0, 0] = 2;
//it really copies the values, not a shallow copy, 
//after:
//arr[0,0] will be 1
//copy[0,0] will be 2

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