Question

我按照说明here尝试从LightSwitch 2012应用程序中调用（无参数）MySQL SP。这个引用的说明适用于SQL Server SP。

以下是相关代码：

using System;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;

namespace LightSwitchApplication
{
    public partial class StoredProcceduresService
    {
        partial void MakeMasterOperations_Inserting(MakeMasterOperation entity)
        {
            using (SqlConnection connection = new SqlConnection())
            {
                string connectionStringName = this.DataWorkspace.SystemInfo.Details.Name;
                connection.ConnectionString = ConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString;

                string storedProcedure = "make_master";
                using (SqlCommand command = new SqlCommand(storedProcedure, connection))
                {
                    command.CommandType = CommandType.StoredProcedure;
                    connection.Open();
                    command.ExecuteNonQuery();
                }            
            }
        this.Details.DiscardChanges();
        }
    }
}

在connection.Open();上出现SqlException失败“用户'root登录失败'。”我知道用户名和密码都没问题，因为具有相同连接字符串的其他数据库操作在LightSwitch中工作得很好。

是否可以在LightSwitch中调用MySQL SP？如果是这样，怎么样？

Answer 1

好吧，我找到了答案。

为了使用MySQL而不是SQL Server，必须在服务器项目中添加对MySql.Data的引用，并将代码更改为：

    using System;
    using System.Configuration;
    using System.Data;
    using System.Linq;
    using MySql.Data.MySqlClient;

    namespace LightSwitchApplication
    {
        public partial class StoredProcceduresService
        {
            partial void MakeMasterOperations_Inserting(MakeMasterOperation entity)
            {
                using (MySqlConnection connection = new MySqlConnection())
                {
                    string connectionStringName = this.DataWorkspace.SystemInfo.Details.Name;
                    connection.ConnectionString = ConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString;

                    string storedProcedure = "make_master";
                    using (MySqlCommand command = new MySqlCommand(storedProcedure, connection))
                    {
                        command.CommandType = CommandType.StoredProcedure;
                        connection.Open();
                        command.ExecuteNonQuery();
                    }            
                }
            this.Details.DiscardChanges();
            }
        }
    }

太糟糕了，似乎没有一个允许实例化的公共基类，具体取决于使用哪个DB服务器..

如何从Light Switch调用MySQL存储过程？

1 个答案: