Question

我的winform中有两个控件，即用户输入的textboxes和datagridview .textboxes数据保存在一个表（购买）中，输入的datagridview数据保存在另一个表（purchasedetail）中。我的问题是文本框值保存在购买表，但datagridview值未保存到数据库。

here is my save button code:

 private void SAVE(object sender, EventArgs e)
        {

            try
            {  
                con.Open();
                cmd = new SqlCommand("insert into Purchase(purchase_id,purchase_date,ref_no,total,total_wrds) values(@purchase_id,@purchase_date,@ref_no,@total,@total_wrds)", con);

                cmd.Parameters.AddWithValue("@purchase_id", textid.Text);
                cmd.Parameters.AddWithValue("@purchase_date", dateTimePicker1.Value);
                cmd.Parameters.AddWithValue("@ref_no", textrno.Text);
                cmd.Parameters.AddWithValue("@total", texttotal.Text);
                cmd.Parameters.AddWithValue("@total_wrds", textinwrds.Text);

                cmd.ExecuteNonQuery();
                foreach (DataGridViewRow row in datagrid.Rows)
                {

                    if (!row.IsNewRow)
                    {

                           using(SqlCommand cmd11 = new SqlCommand("insert into Purchasedetail(product_id, product_name,qty,price,tax,discount,total)values(@product_id, @product_name,@qty,@price,@tax,@discount,@total)", con))

                           {
                            cmd11.Parameters.AddWithValue("@product_id", row.Cells[0].Value);
                            cmd11.Parameters.AddWithValue("@product_name", row.Cells[1].Value);
                            cmd11.Parameters.AddWithValue("@qty", row.Cells[2].Value);
                            cmd11.Parameters.AddWithValue("@price", row.Cells[3].Value);
                            cmd11.Parameters.AddWithValue("@tax", row.Cells[4].Value);
                            cmd11.Parameters.AddWithValue("@discount", row.Cells[5].Value);
                            cmd11.Parameters.AddWithValue("@total", row.Cells[6].Value);
                            cmd11.ExecuteNonQuery();
                            datagrid.Refresh();

                            //row.ReadOnly = true;
                            //clm.ReadOnly = true;
                            MessageBox.Show("Added Sucessfully", "OUTPUT", MessageBoxButtons.OK, MessageBoxIcon.Information);
                            return;
                           }

                    }



                }



            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            finally
            {
                con.Close();
            }

        }

Answer 1

我假设您要将DataGrid表保存到数据库中的表中。有了这个答案，我建议您使用数据网格中的数据，而不是文本框，如果不是非常必要的话。首先我要解释代码。由于您的临时DG表将被添加＆＃34;你需要先清除它。然后将您的itemssource转换为表格，即可保存。使用适配器更新表。

  try
                {
                    SqlCommand ClearTableCommand = new SqlCommand("delete from " + CurrentTableName + ";", myconnection);
                    ClearTableCommand.ExecuteNonQuery();
                    DataTable myDT;
                    DataView myview;
                    myview = (DataView)dataGrid1.ItemsSource;
                    myDT = myview.ToTable(CurrentTableName);



                using (SqlDataAdapter Adapter1 = new SqlDataAdapter("select * from " + CurrentTableName + "", myconnection))
                {

                    Adapter1.UpdateCommand = new SqlCommandBuilder(Adapter1).GetUpdateCommand(true);
                    Adapter1.AcceptChangesDuringFill = false;
                    Adapter1.AcceptChangesDuringUpdate = true;
                    Adapter1.Update(myDT);

                }

            }
            catch (Exception ex)
            {

                System.windows.MessageBox.Show(ex.Message);
            }

如何在c＃按钮单击时将datagridview值插入数据库

1 个答案: