code

Question

private void Btn_Import_Click(object sender, EventArgs e)
          {
 try
              {
FileStream stream = File.Open(@"E:\Projects\Sheet1.xls", FileMode.Open, FileAccess.Read);
 IExcelDataReader excelReader = ExcelReaderFactory.CreateBinaryReader(stream);
  DataSet result = excelReader.AsDataSet();
excelReader.Close();
                  System.Data.DataTable table = result.Tables[0];
                  string date = string.Empty;

                  foreach(DataRow row in table.Rows)
                  {

                      if (!string.IsNullOrEmpty(row[0].ToString()) && row[0].ToString() != "Date")
                      {
                          row[0] = DateTime.FromOADate(double.Parse(row[0].ToString())).ToString("dd-MMM");
                          date = row[0].ToString();
                      }
                      else
                      {
                          row[0] = date;
                      }
                  }
                         datagridView.DataSource = table;
              }
              catch (Exception ex)
              {
                  MessageBox.Show(ex.ToString(), "Error in Import");
                  return;
              }
              finally
              {
                  GFun.OleDbCon.Close();
              }
          }       







   try
            {
                PBar.Value = 1;
                PBar.Visible = true;
                for (int i = 1; i < datagridView.RowCount; i++)
                {
                    if (PBar.Value >= 100)
                        PBar.Value = 1;
                    else
                        PBar.Value = PBar.Value + 40;
                    for (int j = 3; j < datagridView.ColumnCount; j++)
                    {
                        if (PBar.Value >= 100)
                            PBar.Value = 1;
                        else
                            PBar.Value = PBar.Value + 40;
                        //if (datagridView[j, i].Value != DBNull.Value && datagridView[j, i].Value != "" && datagridView[j, i].Value != null && datagridView[j,i].Value != "0")
                        if (datagridView[j, i].Value != DBNull.Value && datagridView[j, i].Value.ToString() != "" && datagridView[j, i].Value != null)
                        {
                            if (datagridView[j, i].Value != null)
                            {
                                if (PBar.Value >= 100)
                                    PBar.Value = 1;
                                else
                                    PBar.Value = PBar.Value + 40;
                                if (datagridView[j, i].Value.ToString().Contains("/"))
                                {
                                    if (PBar.Value >= 100)
                                        PBar.Value = 1;
                                    else
                                        PBar.Value = PBar.Value + 40;
                                    //split the course
                                    string strvalue = datagridView[j, i].Value.ToString();
                                    string[] strarr = strvalue.Split('/');
                                    foreach(object obj in strarr)
                                    {  
                                        try
                                        {
                                            if (PBar.Value >= 100)
                                                PBar.Value = 1;
                                            else
                                                PBar.Value = PBar.Value + 40;
                                            sql = "insert into Tb_SCh_TIme_Table([Sch_Date], [Session], [Course],[Faculty_Code])" + " values ";
                                            sql = sql + "('" + Convert.ToDateTime(datagridView.Rows[i].Cells[0].Value.ToString()) + "', " + int.Parse(datagridView.Rows[i].Cells[1].Value.ToString()) + ",'" + obj.ToString() + "','" + datagridView.Columns[j].HeaderText.ToString() + "')";
                                            GFun.Error = "";
                                            GFun.InsertAccessData(sql);
                                            if (GFun.Error.ToString() != "")
                                            {
                                                PBar.Visible = false;
                                                MessageBox.Show(GFun.Error.ToString(), "Error");
                                                this.Cursor = Cursors.Arrow;
                                                return;
                                            }
                                            GFun.OleDbCon.Close();
                                        }
                                        catch (Exception Ex)
                                        {
                                            PBar.Visible = false;
                                            MessageBox.Show(Ex.ToString(), "Error");
                                            this.Cursor = Cursors.Arrow;
                                            return;
                                        }
                                    }
                                }
                                else
                                {
                                    try
                                    {
                                        if (PBar.Value >= 100)
                                            PBar.Value = 1;
                                        else
                                            PBar.Value = PBar.Value + 40;
                                        sql = "insert into Tb_SCh_TIme_Table([Sch_Date], [Session], [Course],[Faculty_Code])" + " values ('" + Convert.ToDateTime(datagridView.Rows[i].Cells[0].Value.ToString()) + "', " + int.Parse(datagridView.Rows[i].Cells[1].Value.ToString()) + ", '" + datagridView[j, i].Value.ToString() + "','" + datagridView.Columns[j].HeaderText.ToString() + "')";
                                        GFun.Error = "";
                                        GFun.InsertAccessData(sql);
                                        if (GFun.Error.ToString() != "")
                                        {
                                            PBar.Visible = false;
                                            MessageBox.Show(GFun.Error.ToString(), "Error");
                                            this.Cursor = Cursors.Arrow;
                                            return;
                                        }
                                        GFun.OleDbCon.Close();
                                    }
                                    catch (Exception Ex)
                                    {
                                        PBar.Visible = false;
                                        MessageBox.Show(Ex.ToString(), "Error");
                                        this.Cursor = Cursors.Arrow;
                                        return;
                                    }
                                }
                            }
                        }
                    }
                    this.Cursor = Cursors.Arrow;
                }
                PBar.Visible = false;
            }
            catch (Exception Ex1)
            {
                PBar.Visible = false;
                MessageBox.Show(Ex1.ToString(), "Error in SaveDetails", MessageBoxButtons.OK);
            }
            PBar.Visible = false;