how to change header column colour in the generated excel - excel

Question

I am exporting data from sql server database to excel in wpf, and I have achieved the function successully. Now I want to change the head column colour in the generated excel. Any ideas? Thanks in advance.
private void button1_Click(object sender, RoutedEventArgs e)
{
string sql = null;
string data = null;
// string path = null;
//string myfilename = "Report";
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.ApplicationClass();
xlApp = new Microsoft.Office.Interop.Excel.Application();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
xlWorkSheet.Name = "Customer List";
//connectionString = "data source=servername;initial catalog=databasename;user id=username;password=password;";
//SqlConnection cnn = new SqlConnection(GetConnectionString());
SqlConnection cnn = new SqlConnection();
cnn.ConnectionString = #"Data Source=.\sqlexpress;Initial Catalog=ClientLists;Integrated Security=SSPI;";
cnn.Open();
sql = "select FirstName, LastName, City, PostCode, TelephoneNo 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 + 2, j + 1] = data;
}
}
Microsoft.Office.Interop.Excel.Range headerRange1 = xlWorkSheet.get_Range("A1", "A1");
headerRange1.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
headerRange1.Value = "First Name";
headerRange1.Font.Bold = true;
headerRange1.ColumnWidth = 14;
// headerRange1.Interior.Color = 1;
// headerRange1.Borders.Color = System.Drawing.Color.Red;
Microsoft.Office.Interop.Excel.Range headerRange2 = xlWorkSheet.get_Range("B1", "B1");
headerRange2.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
headerRange2.Value = "Last Name";
headerRange2.Font.Bold = true;
headerRange2.ColumnWidth = 14;
Microsoft.Office.Interop.Excel.Range headerRange3 = xlWorkSheet.get_Range("C1", "C1");
headerRange3.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
headerRange3.Value = "City";
headerRange3.Font.Bold = true;
headerRange3.ColumnWidth = 14;
Microsoft.Office.Interop.Excel.Range headerRange4 = xlWorkSheet.get_Range("D1", "D1");
headerRange4.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
headerRange4.Value = "Post Code";
headerRange4.Font.Bold = true;
headerRange4.ColumnWidth = 14;
Microsoft.Office.Interop.Excel.Range headerRange5 = xlWorkSheet.get_Range("E1", "E1");
headerRange5.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
headerRange5.Value = "Telephone NO";
headerRange5.Font.Bold = true;
headerRange5.ColumnWidth = 14;
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

There is a post that can be found here that says that this is not possible.
However, the c# excel how to change a color of a particular row post on StackOverflow that provides code for changing a row colour... you may be able to adapt it for you purposes.