Find bounds of a array? C#

I was somewhat sur开发者_Go百科prised to see the below work coming from a C++ background. It obviously holds the bounds information at runtime, how can i get the first and 2nd bounds?

Reflection is welcome but not recommended.

    ff(new int[3, 4]);

    static void ff(int[,] a)
    {
        var aa = a[1, 2];
    }

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int bound0 = a.GetUpperBound(0);
int bound1 = a.GetUpperBound(1);

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You get the largest accessible index for dimension i with GetUpperBound(i).

You get the number of elements for dimension i with GetLength(i) or GetLongLength(i).

Dimensions start at 0;

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Arrays in .net have a number of methods attached to them, amongst these are GetUpperBound and GetLowerBound:

var three = a.GetUpperBound(0); // contents is: 2
var four = a.GetUpperBound(1); // contents is: 3

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Array.GetUpperBound Method gets the upper bound of the specified dimension in the Array.:

int bound0 = array.GetUpperBound(0);
int bound1 = array.GetUpperBound(1);

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The usual way is GetLength(int dim) :

for (int row = 0; row < a.GetLength(0); row++)
   ...

For 1-dimensional arrays the Length property is used mostly.