How to create 2D jagged array

In my code an array is declared as follows

private Object[,] cellInfos = new Object[20, 10];

I need to convert it into Jagged array so I wrote following code

private Object[][] cellInfos = {
    new Object[20],
    new Object[10]
};

But it gave me a array with 2 items each of type 开发者_高级运维array.

I need to create 2D array where new Object[20] would be first column and new Object[10] would be the second one.

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I think you want something more like this:

object[][] cellInfos = new object[20][];
for (int i = 0; i < cellInfos.Length; i++)
{
   cellInfos[i] = new object[10];
}