Sql server 存储过程无法'；联系不到

无法执行存储过程。谁能告诉我并指出我愚蠢的错误

我收到的错误消息是

无效操作。连接已关闭

代码：

---

要调用

.BeginTransaction（）

，您的连接需要已经打开-因此将代码更改为：

using (SqlConnection connection = new SqlConnection(@"Data Source=19NNZP;Initial Catalog=ivr;Persist Security Info=True;User ID=sa;Password=sa"))
{
        // set up the SqlCommand 
        SqlCommand command = new SqlCommand();
        command.Connection = connection;
        command.CommandType = CommandType.StoredProcedure;
        command.CommandText = "dbo.fax_UpdateFaxReply";

        // SqlDbType should be *NVarChar* to exactly match the stored procedure parameter's type! 
        // Otherwise you'll have an implicit conversion happening....
        command.Parameters.Add("@uid", SqlDbType.NVarChar, 50).Value = RPBAL.UlyssesID ;

        SqlTransaction transaction;

        try
        {
            // open connection, start transaction
            connection.Open();

            transaction = connection.BeginTransaction("SampleTransaction");

            // assign transaction to SqlCommand and execute it  
            command.Transaction = transaction;
            command.ExecuteNonQuery();

            // if successful - commit the transaction!
            transaction.Commit();
            connection.Close();

            Console.WriteLine("OK");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
                throw new Exception(ex.Message);
            }
        }
    }

---

更改之后，希望此代码可以正常工作。

是否尝试使用相同的登录名和参数直接运行SP？

@ulyssesId

参数是什么类型？是否有其他参数（特别是必需的参数）？是的，使用相同的登录凭据直接运行sp没有问题。只有一个参数，它是nvarchar（50）。这是我收到的错误消息“操作无效。连接已关闭。”

using (SqlConnection connection = new SqlConnection(@"Data Source=19NNZP;Initial Catalog=ivr;Persist Security Info=True;User ID=sa;Password=sa"))
{
        // set up the SqlCommand 
        SqlCommand command = new SqlCommand();
        command.Connection = connection;
        command.CommandType = CommandType.StoredProcedure;
        command.CommandText = "dbo.fax_UpdateFaxReply";

        // SqlDbType should be *NVarChar* to exactly match the stored procedure parameter's type! 
        // Otherwise you'll have an implicit conversion happening....
        command.Parameters.Add("@uid", SqlDbType.NVarChar, 50).Value = RPBAL.UlyssesID ;

        SqlTransaction transaction;

        try
        {
            // open connection, start transaction
            connection.Open();

            transaction = connection.BeginTransaction("SampleTransaction");

            // assign transaction to SqlCommand and execute it  
            command.Transaction = transaction;
            command.ExecuteNonQuery();

            // if successful - commit the transaction!
            transaction.Commit();
            connection.Close();

            Console.WriteLine("OK");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
                throw new Exception(ex.Message);
            }
        }
    }