DataGridView导出到Excel

private void SaveAs() //另存新档按钮   导出成Excel

 

         {

 

             SaveFileDialog saveFileDialog = new SaveFileDialog();

            saveFileDialog.Filter = "Execl files (*.xls)|*.xls";

            saveFileDialog.FilterIndex = 0;

            saveFileDialog.RestoreDirectory = true;

 

             saveFileDialog.CreatePrompt = true;

 

            saveFileDialog.Title = "Export Excel File To";

 

 

           saveFileDialog.ShowDialog();

 

 

             Stream myStream;

 

             myStream = saveFileDialog.OpenFile();

 

             //StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));

 

             StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));

 

             string str = "";

 

            try

 

            {

 

                 //写标题

 

                 for (int i = 0; i < dgvPatrol.ColumnCount; i++)

 

                {

 

                     if (i > 0)

 

                     {

                        str += "\t";

                   }

 

                    str += dgvPatrol.Columns[i].HeaderText;

 

                }

 

 

                 sw.WriteLine(str);

 

 

 

                //写内容

 

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

 

                 {

 

                    string tempStr = "";

 

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

 

                    {

 

                        if (k > 0)

 

                       {

 

                             tempStr += "\t";

 

                         }

 

                        tempStr += dgvPatrol.Rows[j].Cells[k].Value.ToString();

 

                     }

 

                    

 

                    sw.WriteLine(tempStr);                   

 

                 }

 

                 sw.Close();

              myStream.Close();

           }

           catch (Exception e)

            {

                MessageBox.Show(e.ToString());

            }

            finally

            {

                sw.Close();

                myStream.Close();

           }          

      }