Insert Data Into Jagged Arrays using For Loop

Question

Here i am try to inserting Data into array,but here Iam getting bellow Error Object reference not set to an instance of an object. how can i insert Data into array using loop.

 String[][] data = new String[gvDetails.Rows.Count][];
               {
                    for (rowIndex = 0; rowIndex < gvDetails.Rows.Count; rowIndex++)
                    {
                        for (int k = 0; k < gvDetails.Columns.Count; k++)
                        {
                            string Data1=DataTable1.Rows[rowIndex][k].ToString();
                            data[rowIndex][k] = Data1;
}
}

Answer 1

Each row in the jagged array is set to null initially and needs to be initialized:

for (rowIndex = 0; rowIndex < gvDetails.Rows.Count; rowIndex++)
{
    data[rowIndex] = new String[gvDetails.Columns.Count];