C# 调用存储过程 Sql Server存储过程 存储过程报错，程序中的try
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> {
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(".", pars, "ret_tab");
//受影响的行数...
int affect_rows_count = 0;
//存储过程的返回值...
int result = this.RunProcedure(".", pars, out affect_rows_count);
if (result == 1)
{
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,> {
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,> {
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>
/// 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,> {
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,> {
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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