Need to Create a table format in c# (windows Application)

int prev_row = -1;
int iteration_count = -1;
int this_col = 0;

foreach(DataRow row in MyDataTable)
{
    iteration_count += 1;
    this_row = iteration_count / 5;     // Integer Division

    this_col = iteration_count % 5;     // Modular Arithmetic

    // but we need to map 5 cols to 10
    // so 0 -> 0,1
    //    1 -> 2,3
    //  ..4 -? 8.9

    int this_col1 = 2*this_col;         // Stores 1,2,3,4, interleaved with 
    int this_col2 = (2 * this_col) + 1; // 9:00, 9:15...

    // Maybe use a String[10] ColumnArray to hold the columns as the are built 
    // Build Column Here

    // Check If Row Complete
    if (this_row != prev_row)
    {
        // Add The DataGridRow

        // Clear the ColumnArray[] if we used it 

        // Switch the row markers
        prev_row = this_row;
    }

}

myDataGridView.Rows.Add() ;
 int RowIndex = myDataGridView.RowCount - 1;
 DataGridViewRow R= myDataGridView.Rows[RowIndex];
 R.Cells[0].Value = columnArray[0];
 R.Cells[1].Value = columnArray[1];
 ...