Export data from DataTable to an excel

Hi,

I have a requirement where I have to export a SharePoint List's data to an excel/csv. While I have achieved this using this C# code:

using (SPSite Site = new SPSite("Site URL"))
            {
                SPWeb web = Site.OpenWeb();
                SPQuery Query = new SPQuery();
                Query.Query = "";

                SPList List = web.GetList("List URL");
                SPListItemCollection listData = List.GetItems(Query);

                DataTable ListData = List.GetItems(List.DefaultView).GetDataTable();
                

                ExportToExcel(ListData);
            }
        }

        private static void ExportToExcel(DataTable dataTable)
        {

            //open file
            StreamWriter wr = new StreamWriter(@"C:\\Name.csv");
            try
            {
                for (int i = 0; i < dataTable.Columns.Count; i++)
                {
                    wr.Write(dataTable.Columns[i].ToString().ToUpper() + "\t");
                }

                wr.WriteLine();

                //write rows to excel file
                for (int i = 0; i < (dataTable.Rows.Count); i++)
                {
                    for (int j = 0; j < dataTable.Columns.Count; j++)
                    {
                        if (dataTable.Rows[i][j] != null)
                        {
                            wr.Write(Convert.ToString(dataTable.Rows[i][j]) + "\t");
                        }
                        else
                        {
                            wr.Write("\t");
                        }
                    }
                    //go to next line
                    wr.WriteLine();
                }
                //close file
                wr.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

There is one small problem I am facing in here. One of the columns is a Managed metadata type column. So the value for this column is exported to the excel asVALUE|{GUID}.

How do I get rid of this. I handled this issue using powershell like this:

$pname = $_["PName"] -as [Microsoft.SharePoint.Taxonomy.TaxonomyFieldValue]; 

How do I tackle this in here?