C# 調用存儲過程 Sql Server存儲過程 存儲過程報錯，程序中的try

C#程序調用Sql Server存儲過程,存儲過程中報錯情況,返回值...

0.SQL存儲過程

USE [Opos]
GO
/****** Object:  StoredProcedure [dbo].[Test]    Script Date: 2017/4/17 10:38:54 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:        <Author,,Name>
-- Create date: <Create Date,,>
-- Description:    <Description,,>
-- =============================================
ALTER PROCEDURE [dbo].[Test]
    @NameTest Varchar(10)--程序中將這個值寫的很大的話,報錯"將截斷字符串或二進制數據。"
AS
BEGIN
    Begin Tran

    Begin Try
        Declare @TestTab Table(Name Nvarchar(1),ID Int)
        --不是在Catch中報錯...
        If(@NameTest = '')
            Begin
                Insert @TestTab
                Select @NameTest,0
                --本來將錯誤嚴重級定為[19],程序Catch報錯↓
                --大於 18 的錯誤嚴重級別只能由 sysadmin 角色的成員用 WITH LOG 選項指定。
                --Raiserror('Name 不可為空 ...',19,100)
                /*貌似這里自定義的錯誤,程序catch中不報錯...*/
                Raiserror('Name 不可為空 ...',10,100)
            End
        

        Insert @TestTab
        Select @NameTest,0


        Select * From @TestTab
        --提交事務
        Commit Tran
        Return 1

    End Try

    Begin Catch
        Declare @Error_Msg Nvarchar(4000),@Error_Severity Int

        Select @Error_Msg = Error_message(),@Error_Severity = ERROR_SEVERITY()
        --回滾事物
        Rollback Tran
        --報錯
        Raiserror(@Error_Msg,@Error_Severity,100)
        --返回值
        Return 0
    End Catch


END

1.C# code

using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows;

namespace CProcedureReturn
{
    /// <summary>
    /// MainWindow.xaml 的交互邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }



        private void RunProcedure(object sender, RoutedEventArgs e)
        {
            try
            {
                string name_test = "304985039480598304985039840583409853409098098098098098";
                SqlParameter[] pars = {
                new SqlParameter("@NameTest",name_test)
                };
                //DataSet ret_tab = db.RunProcedure("[csms].[spClassTableGenerateZixi]", pars, "ret_tab");
                //受影響的行數...
                int affect_rows_count = 0;
                //存儲過程的返回值...
                int result = this.RunProcedure("[dbo].[Test]", pars, out affect_rows_count);
                if (result == 1)
                {
                    MessageBox.Show("未報錯,成功!");
                }
                else
                {
                    MessageBox.Show("報錯!");
                }

            }
            catch (System.Data.SqlClient.SqlException sql_e)
            {
                MessageBox.Show(sql_e.Message);
            }
        }





        #region SQL一些函數
        //連接數據庫的字符串...
        public static string connectionString = "server=.;database=Opos;uid=sa;pwd=1234";

        /// <summary>
        /// 構建 SqlCommand 對象(用來返回一個結果集，而不是一個整數值)
        /// </summary>
        /// <param name="connection">數據庫連接</param>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <returns>SqlCommand</returns>
        private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {

            SqlCommand command = new SqlCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            foreach (SqlParameter parameter in parameters)
            {
                if (parameter != null)
                {
                    // 檢查未分配值的輸出參數,將其分配以DBNull.Value.
                    if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                        (parameter.Value == null))
                    {
                        parameter.Value = DBNull.Value;
                    }
                    command.Parameters.Add(parameter);
                }
            }

            return command;
        }


        /// <summary>
        /// 創建 SqlCommand 對象實例(用來返回一個整數值)    
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <returns>SqlCommand 對象實例</returns>
        private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.Parameters.Add(new SqlParameter("ReturnValue",
                SqlDbType.Int, 4, ParameterDirection.ReturnValue,
                false, 0, 0, string.Empty, DataRowVersion.Default, null));
            return command;
        }


        /// <summary>
        /// 執行存儲過程，返回影響的行數        
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="rowsAffected">影響的行數</param>
        /// <returns></returns>
        public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                int result;
                connection.Open();
                SqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
                rowsAffected = command.ExecuteNonQuery();
                result = (int)command.Parameters["ReturnValue"].Value;
                //Connection.Close();
                return result;
            }
        }

        /// <summary>
        /// 執行存儲過程
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="tableName">DataSet結果中的表名</param>
        /// <returns>DataSet</returns>
        public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                SqlDataAdapter sqlDA = new SqlDataAdapter();

                SqlCommand sql_command = new SqlCommand();
                sql_command = BuildQueryCommand(connection, storedProcName, parameters);


                sqlDA.SelectCommand = sql_command;//BuildQueryCommand(connection, storedProcName, parameters);
                sqlDA.Fill(dataSet, tableName);
                connection.Close();
                return dataSet;
            }
        }

        #endregion



    }
}

 

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測試了下
RAISERROR ( '錯誤消息', 16, 1)可以在異常中捕獲

 

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