C# DataGridView Export to Excel

using System; using System.Data; using System.Windows.Forms; using System.Data.SqlClient; using Excel = Microsoft.Office.Interop.Excel; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { string connectionString = "Data Source=.;Initial Catalog=pubs;Integrated Security=True"; string sql = "SELECT * FROM Authors"; SqlConnection connection = new SqlConnection(connectionString); SqlDataAdapter dataadapter = new SqlDataAdapter(sql, connection); DataSet ds = new DataSet(); connection.Open(); dataadapter.Fill(ds, "Authors_table"); connection.Close(); dataGridView1.DataSource = ds; dataGridView1.DataMember = "Authors_table"; } private void button2_Click(object sender, EventArgs e) { Excel.Application xlApp; Excel.Workbook xlWorkBook; Excel.Worksheet xlWorkSheet; object misValue = System.Reflection.Missing.Value; Int16 i, j; xlApp = new Excel.ApplicationClass(); xlWorkBook = xlApp.Workbooks.Add(misValue); xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1); for (i = 0; i <= dataGridView1.RowCount - 2; i++) { for (j = 0; j <= dataGridView1.ColumnCount - 1; j++) { xlWorkSheet.Cells[i + 1, j + 1] = dataGridView1[j, i].Value.ToString(); } } xlWorkBook.SaveAs(@"c:\csharp.net-informations.xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue); 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(); } } } }