How to display column headers in the Exported Excel - wpf

Question

I am following a tutorial "Export data from sql server database to excel in wpf". Now I can achieve the function successfully. But in the exported Excel file, there is no column names (database column headers like CustomerId, CustomerName, city, postcode, telephoneNo...)
.
How can I get this feature? Also, how can I open a SaveAs dialogue? Thanks. The following is my code:
private void button1_Click(object sender, RoutedEventArgs e)
{
string sql = null;
string data = null;
int i = 0;
int j = 0;
Microsoft.Office.Interop.Excel.Application xlApp;
Microsoft.Office.Interop.Excel.Workbook xlWorkBook;
Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Microsoft.Office.Interop.Excel.Application();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
SqlConnection cnn = new SqlConnection();
cnn.ConnectionString = #"Data Source=.\sqlexpress;Initial Catalog=Client;Integrated Security=SSPI;";
cnn.Open();
sql = "select * from Customers";
SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
DataSet ds = new DataSet();
dscmd.Fill(ds);
for (i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
{
for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++)
{
data = ds.Tables[0].Rows[i].ItemArray[j].ToString();
xlWorkSheet.Cells[i + 1, j + 1] = data;
}
}
xlWorkBook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}
}

Answer 1

I'm not an expert in this, but I believe that you can use an underscore character (_) in a Range object to select or edit a column header:
xlWorkSheet.Range["A1", _].Value2 = "Heading for first column";