private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
 {
     if (dataGridView1.Columns[e.ColumnIndex].Name == "Operate1")
     {
         projectgroupId = Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString());
         frmSelectTimePeriodAdd fm = frmSelectTimePeriodAdd.GetInstance(projectgroupId);
         fm.Exec(projectgroupId);
         fm.ShowDialog();
     }
     else if (dataGridView1.Columns[e.ColumnIndex].Name == "Operate2")
     {
         projectgroupId = Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString());
         frmSelectTimePeriodEdit fm = frmSelectTimePeriodEdit.GetInstance(projectgroupId);
         fm.Exec(projectgroupId);
         fm.ShowDialog();
     }
     else if (dataGridView1.Columns[e.ColumnIndex].Name == "Operate3")
     {
         projectgroupId = Convert.ToInt32(this.dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString());
         desc           = this.dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString() + " - " + this.dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString() + " " + this.dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString();
         frmSelectTimePeriodDetails fm = frmSelectTimePeriodDetails.GetInstance(projectgroupId, desc);
         fm.Exec(projectgroupId, desc);
         fm.ShowDialog();
     }
 }
 public static frmSelectTimePeriodDetails GetInstance(int projectgroupId, string desc)
 {
     if (frmSelectTimePeriodDtls == null)
     {
         frmSelectTimePeriodDtls = new frmSelectTimePeriodDetails(projectgroupId, desc);
     }
     return(frmSelectTimePeriodDtls);
 }