Question

我以前有一个带有dataContracts的服务，这样就可以很好地将数据插入到数据库中，这就是代码：

public string InsertDetails(DeviceDetails deviceInfo)
    {
        using (SqlConnection con = new SqlConnection("Data Source=localhost\\sqlexpress;Initial Catalog=vurdevice;Integrated Security=True"))
        {
            string Message;
            con.Open();
            SqlCommand cmd = new SqlCommand(@"INSERT INTO VR_Image (IMEINo, FileName, FileURL, Uploader, CarrierID, StorageName, FileSize, CreateDate) 
                                            values (@IMEINo, @FileName, @FileURL, @Uploader, @CarrierID, @StorageName, @FileSize, @CreateDate)", con);

            cmd.Parameters.AddWithValue("@IMEINo", deviceInfo.IMEINo);
            cmd.Parameters.AddWithValue("@FileName", deviceInfo.FileName);
            cmd.Parameters.AddWithValue("@FileURL", deviceInfo.FileURL);
            cmd.Parameters.AddWithValue("@Uploader", deviceInfo.Uploader);
            cmd.Parameters.AddWithValue("@CarrierID", deviceInfo.CarrierID);
            cmd.Parameters.AddWithValue("@StorageName", deviceInfo.StorageName);
            cmd.Parameters.AddWithValue("@FileSize", deviceInfo.FileSize);
            cmd.Parameters.AddWithValue("@CreateDate", deviceInfo.CreateDate);

            int result = cmd.ExecuteNonQuery();
            if (result == 1)
            {
                Message = deviceInfo.IMEINo + " Details inserted successfully";
            }
            else
            {
                Message = deviceInfo.IMEINo + " Details not inserted successfully";
            }
            con.Close();
            return Message;
        }
    }

我现在已经更改了服务以从客户端接收数据集（客户端应用程序和服务在这里受到控制，因此即使数据集不是可行的方式，它也可以，因为我们的用户有限）。我只有一个operationContract将处理所有进入的数据集并将它们分发到它需要去的特定函数，这就是operationContract函数的代码：

public DataSet InterfaceService(string sInterface, DataSet dsIn)
    {
        System.Data.DataSet dsClean = new System.Data.DataSet();
        try
        {
            MethodInfo oMethod = null;
            oMethod = this.GetType().GetMethod(sInterface);
            System.Data.DataSet dsOut = (System.Data.DataSet)oMethod.Invoke(this, new object[] { dsIn });
            dsClean.Merge(dsOut);
        }
        catch (Exception ex)
        {
            throw new FaultException(ex.Message, new FaultCode("An error has occurred. Please try again."));
        }
        return dsClean;
    }

这就是新的Insert函数的样子，我无法弄清楚为什么数据不再插入数据库？！？！？！？

public DataSet InsertDetails(DataSet dsIn)
    {
        DataSet1.InsertInfoDataTable ds = new DataSet1.InsertInfoDataTable();
        ds.Merge(dsIn.Tables["InsertInfo"]);
        DataSet1.InsertInfoRow dr = ds.First();

        using (SqlConnection con = new SqlConnection("Data Source=localhost\\sqlexpress;Initial Catalog=vurdevice;Integrated Security=True"))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand(@"INSERT INTO VR_Image (IMEINo, FileName, FileURL, Uploader, CarrierID, StorageName, FileSize, CreateDate) 
                                            VALUES (@IMEINo, @FileName, @FileURL, @Uploader, @CarrierID, @StorageName, @FileSize, @CreateDate)", con);

            cmd.Parameters.AddWithValue("@IMEINo", dr.IMEINo);
            cmd.Parameters.AddWithValue("@FileName", dr.FileName);
            cmd.Parameters.AddWithValue("@FileURL", dr.FileURL);
            cmd.Parameters.AddWithValue("@Uploader", dr.Uploader);
            cmd.Parameters.AddWithValue("@CarrierID", dr.CarrierID);
            cmd.Parameters.AddWithValue("@StorageName", dr.StorageName);
            cmd.Parameters.AddWithValue("@FileSize", Convert.ToInt32(dr.FileSize));
            cmd.Parameters.AddWithValue("@CreateDate", Convert.ToDateTime(dr.CreateDate));
            con.Close();
            return dsIn;
        }
    }

Answer 1

您的第一个代码段包含执行命令的调用，但第二个代码不包含。在关闭之前添加一个调用来执行sql命令。

cmd.Parameters.AddWithValue("@CreateDate", Convert.ToDateTime(dr.CreateDate));
int result = cmd.ExecuteNonQuery(); // This line is missing
con.Close();

数据未通过WCF插入数据库

1 个答案: