public void expense_delete(int ID)
 {
     expense.Delete(ID);
     Insert_expense_GridView.DataBind();
     Update_expense_GridView.DataBind();
     Delete_expense_GridView.DataBind();
 }
 public expense expense_insert()
 {
     expense.case_id             = Convert.ToInt32(Insert_case_id_txt.Text);
     expense.client_id           = Convert.ToInt32(Insert_client_id_txt.Text);
     expense.date_paid           = Convert.ToDateTime(Insert_date_paid_txt.Text);
     expense.expense_amt_paid    = Convert.ToDecimal(Insert_expense_amt_paid_txt.Text);
     expense.expense_amt_paid_to = Insert_expense_amt_paid_to_txt.Text;
     expense = expense.Insert(expense);
     Insert_expense_GridView.DataBind();
     Update_expense_GridView.DataBind();
     Delete_expense_GridView.DataBind();
     return(expense);
 }
 public expense expense_update(int ID)
 {
     expense                     = expense.Select(ID);
     expense.expense_id          = Convert.ToInt32(Update_expense_id_txt.Text);
     expense.case_id             = Convert.ToInt32(Update_case_id_txt.Text);
     expense.client_id           = Convert.ToInt32(Update_client_id_txt.Text);
     expense.date_paid           = Convert.ToDateTime(Update_date_paid_txt.Text);
     expense.expense_amt_paid    = Convert.ToDecimal(Update_expense_amt_paid_txt.Text);
     expense.expense_amt_paid_to = Update_expense_amt_paid_to_txt.Text;
     expense.Update(expense);
     Insert_expense_GridView.DataBind();
     Update_expense_GridView.DataBind();
     Delete_expense_GridView.DataBind();
     return(expense);
 }