How to change dd/mm/yyyy date formate of excel to dd-mm-yyyy

Question

Date in my data table is in 1-3-2020 this format . I am saving this date in excel file  by using following code

 

for (int j = 0; j < CopyDataTable.Rows.Count; j++)

{

for (int k = 0; k < CopyDataTable.Columns.Count; k++)

{

if (k == 7 || k == 10)

{

if (CopyDataTable.Rows[j].ItemArray[k].ToString().Contains("-"))

{

xlWorkSheet.Range[xlWorkSheet.Cells[j + 2, k + 1], xlWorkSheet.Cells[j + 2, k + 1]].NumberFormat

= "dd-mm-yyyy";

}

try

{

xlWorkSheet.Cells[j + 2, k + 1] = CopyDataTable.Rows[j].ItemArray[k].ToString();

}

catch (Exception ex)

{ }

}

xlWorkSheet.Cells[j + 2, k + 1] = CopyDataTable.Rows[j].ItemArray[k].ToString();

}

}

 

but it is displaying as 03-01-2020  in excel and i want to display as 01-03-2020 . Please provide solution for it.