C#程序调用Sql Server存储过程,存储过程中报错情况,返回值...
0.SQL存储过程
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)--程序中将这个值写的很大的话,报错"将截断字符串或二进制数据。"
AS
BEGIN
Begin Tran Begin Try
Declare @TestTab Table(Name Nvarchar(1),ID Int)
--不是在Catch中报错...
If(@NameTest = '')
Begin
Insert @TestTab
Select @NameTest,0
--本来将错误严重级定为[19],程序Catch报错↓
--大于 18 的错误严重级别只能由 sysadmin 角色的成员用 WITH LOG 选项指定。
--Raiserror('Name 不可为空 ...',19,100)
/*貌似这里自定义的错误,程序catch中不报错...*/
Raiserror('Name 不可为空 ...',10,100)
End Insert @TestTab
Select @NameTest,0 Select * From @TestTab
--提交事务
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()
--回滚事物
Rollback Tran
--报错
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 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
} private void RunProcedure(object sender, RoutedEventArgs e)
{
try
{
string name_test = "";
SqlParameter[] pars = {
new SqlParameter("@NameTest",name_test)
};
//DataSet ret_tab = db.RunProcedure("[csms].[spClassTableGenerateZixi]", pars, "ret_tab");
//受影响的行数...
int affect_rows_count = ;
//存储过程的返回值...
int result = this.RunProcedure("[dbo].[Test]", pars, out affect_rows_count);
if (result == )
{
MessageBox.Show("未报错,成功!");
}
else
{
MessageBox.Show("报错!");
} }
catch (System.Data.SqlClient.SqlException sql_e)
{
MessageBox.Show(sql_e.Message);
}
} #region SQL一些函数
//连接数据库的字符串...
public static string connectionString = "server=.;database=Opos;uid=sa;pwd=1234"; /// <summary>
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// </summary>
/// <param name="connection">数据库连接</param>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</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)
{
// 检查未分配值的输出参数,将其分配以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>
/// 创建 SqlCommand 对象实例(用来返回一个整数值)
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <returns>SqlCommand 对象实例</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, , ParameterDirection.ReturnValue,
false, , , string.Empty, DataRowVersion.Default, null));
return command;
} /// <summary>
/// 执行存储过程，返回影响的行数
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="rowsAffected">影响的行数</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>
/// 执行存储过程
/// </summary>
/// <param name="storedProcName">存储过程名</param>
/// <param name="parameters">存储过程参数</param>
/// <param name="tableName">DataSet结果中的表名</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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测试了下
RAISERROR ( '错误消息', 16, 1)可以在异常中捕获
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