ExecuteNonQuery需要命令在我的代码中有一个事务错误

我在cmd.ExecuteNonQuery上得到以下错误。

“ExecuteNonQuery需要该命令在分配给该命令的连接处于未决的本地事务中时执行事务，该命令的Transaction属性尚未初始化。

这是我的代码：

  //if (hdRefresh.Value.Length > done.Value.Length || done.Value == "1") //{ // //Write Your Add Customer Code here > Response.Write("true") // done.Value = hdRefresh.Value; //} //else //{ // Response.Redirect("~/Cashier/BTBill.aspx"); // return; //} if (IsClosedToDay()) { ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "Warning", "<script>alert('Day Closing has been Performed ')</script>", false); return; } DateTime dateFeomDB = getdate(); // by atizaz if (HDD.Value == "" || HDD.Value == null) { ScriptManager.RegisterClientScriptBlock(Page, typeof(Page), "Warning", "<script>alert('No Transaction Found')</script>", false); return; } // SqlConnection scon = new SqlConnection(ConfigurationManager.ConnectionStrings["SQLCONN"].ToString()); Common.BillTransaction bill1 = new Common.BillTransaction(); ProcessUpdateBalandUnAuthBal insertBalance = new ProcessUpdateBalandUnAuthBal(); Common.Currency currencyy = new Common.Currency(); ProcessAuthorizeTokenByBillNo authorize = new ProcessAuthorizeTokenByBillNo(); BillTransaction bill = new BillTransaction(); scon.Open(); SqlTransaction sqlTrans = scon.BeginTransaction(); try { string strforxml = HDD.Value; XmlDocument docXml = new XmlDocument(); #region Read In To Sender Controlls #region Common Information Contact con = new Contact(); con.Title = ddlTitle.SelectedItem.Text; con.FirstName = TextBox1.Text.Trim(); con.LastName = TextBox9.Text.Trim(); con.ConTactNo = txtCell.Text == "" ? SqlString.Null : txtCell.Text; con.Country = ddlCountry.SelectedItem.Text; con.CustomerType = ddlCustomerType.SelectedItem.Text; con.CustTypeID = int.Parse(ddlCustomerType.SelectedValue); con.CountryID = Int32.Parse(ddlCountry.SelectedValue); con.sqlTransaction = sqlTrans; if (Scitytxt.Value != "") { try { con.City = Scitytxt.Value; con.CityID = Int32.Parse(Scityval.Value); } catch (Exception) { } } else { con.City = SqlString.Null;// Scitytxt.Value; con.CityID = SqlInt32.Null;// Int32.Parse(Scityval.Value); con.Address = ""; } //con.City = ddlCity.SelectedItem.Text; //con.CityID = int.Parse(ddlCity.SelectedValue); con.Address = TextBox10.Text; #endregion #region Check For NIC and Passport if (txtNIC.Text != "" || txtPassport.Text != "") { SqlDataReader rdrsender; if (txtNIC.Text != "") { con.NIC = txtNIC.Text; } else { con.NIC = SqlString.Null; } if (txtPassport.Text != "") { con.Passport = txtPassport.Text; } else { con.Passport = SqlString.Null; } ProcessSearchContactInContactInfo srchSender = new ProcessSearchContactInContactInfo(); srchSender.Contact = con; srchSender.Invokewith5parameters(); rdrsender = srchSender.ResultSet; #region If record Doesnot Exist In response of NIC Passport if (!rdrsender.Read()) { rdrsender.Close(); rdrsender.Dispose(); // con.sqlTransaction = sqlTrans; ProcessAddContact InsertnewSenderInfo = new ProcessAddContact(); // InsertnewSenderInfo.sqlTransaction = sqlTrans; InsertnewSenderInfo.Contact = con; InsertnewSenderInfo.Invoke(); // sender1 = InsertnewSenderInfo.ResultSet; // Sender_ID.Value = sender1[13].ToString(); } #endregion #region If Record Exists else { con.CustomerID = Int32.Parse(rdrsender["Customer_ID"].ToString()); rdrsender.Close(); rdrsender.Dispose(); } #endregion } #endregion #region If Customer Donot Have NIC And/OR Passport else// this executes when both Pasport and NIC are Null { con.NIC = SqlString.Null; con.Passport = SqlString.Null; ProcessAddContact InsertnewSenderInfo = new ProcessAddContact(); InsertnewSenderInfo.Contact = con; InsertnewSenderInfo.Invoke(); DataSet ds = new DataSet(); int a = con.CustomerID; StringReader inforeader = new StringReader("<CusTable><CusInfo><Relation_Type></Relation_Type><HusbandFather_Name></HusbandFather_Name><Address_Present></Address_Present><Address_Other></Address_Other><Phone_No_Office></Phone_No_Office><Cell_No></Cell_No><Fax_No></Fax_No><Date_Of_Birth></Date_Of_Birth><NTN_No></NTN_No><Nationality></Nationality><Occupation></Occupation><Relation_With_Financial_Institution></Relation_With_Financial_Institution><Other_Relation_With_Financial_Institution></Other_Relation_With_Financial_Institution><Business_Relation></Business_Relation></CusInfo></CusTable>"); ds.ReadXml(inforeader); ds.GetXml(); SqlCommand cmd = new SqlCommand("update Contact_Info set CustInfo=" + ds.GetXml() + " WHERE Customer_ID=" + a + "", scon); cmd.ExecuteNonQuery(); // sender1 = InsertnewSenderInfo.ResultSet; // Sender_ID.Value = sender1[13].ToString(); } 

告诉我什么是我的代码中的问题，以及如何解决它。

Answer 1

试着改变这一行

 SqlCommand cmd = new SqlCommand("update Contact_Info set CustInfo=" + ds.GetXml() + " WHERE Customer_ID=" + a + "", scon); 

通过这种方式

 SqlCommand cmd = new SqlCommand("update Contact_Info set CustInfo=" + ds.GetXml() + " WHERE Customer_ID=" + a + "", scon, sqlTrans); 

错误消息正好说明了问题。 在这些行中，您已经打开了一个事务，并且在错误时仍然打开

 ..... scon.Open(); SqlTransaction sqlTrans = scon.BeginTransaction(); ..... 

现在，当连接有一个打开的事务时，每个SqlCommand都需要被通知。 该事务不是由框架自动设置的。
您可以使用SqlCommand构造函数，如上所述，也可以在执行该命令之前设置cmd.Transaction属性。

编辑 ：只是要完成。 在使用查询文本更新/插入/删除/select数据库时，避免使用string连接。 使用参数。 这将避免奇怪或无效字符的问题，最重要的是将防止SqlInjection攻击

 string sqlText = "update Contact_Info set CustInfo=@info WHERE Customer_ID=@id"; SqlCommand cmd = new SqlCommand(sqlText, scon, sqlTrans); cmd.Parameters.AddWithValue("@info", ds.GetXml()); cmd.Parameters.AddWithValue("@id",a); cmd.ExecuteNonQuery(); 

Answer 2

在调用cmd.ExecuteNonQuery()之前，您已经启动了一个未提交的事务。

只需写下cmd.Transaction = sqlTrans; 就在cmd.ExecuteNonQuery();之前cmd.ExecuteNonQuery();

它将确保Now ExecuteNonQuery()将在同一个事务中执行，并且能够在同一个事务中看到对数据库所做的所有修改。