C#操作数据库原生方法大全

大家好，我是李工。C#编程我们常用操作数据库的ORM有EF、Dapper、SqlSugar、NHibernate这些成熟的框架；但是对于初学者还是推荐原生方法SqlClient，更利于原生SQL、存储过程的编写；有兴趣的小伙伴们可以一起学习。

一、引用SqlClient

using System.Data.SqlClient;

二、数据库连接字符串

//数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库.		
public static string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

三、代码实现

执行简单SQL语句

#region  执行简单SQL语句


/// 
/// 执行SQL语句，返回影响的记录数
/// 
/// SQL语句
/// 影响的记录数
public static int ExecuteSql(string SQLString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = new SqlCommand(SQLString, connection))
        {
            try
            {
                connection.Open();
                int rows = cmd.ExecuteNonQuery();
                return rows;
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                connection.Close();
                throw e;
            }
        }
    }
}


/// 
/// 执行SQL语句，返回影响的记录数
/// 
/// SqlConnection对象
/// SqlTransaction事件
/// SQL语句
/// 影响的记录数
public static int ExecuteSql(SqlConnection connection, SqlTransaction trans, string SQLString)
{
    using (SqlCommand cmd = new SqlCommand(SQLString, connection))
    {
        try
        {
            cmd.Connection = connection;
            cmd.Transaction = trans;
            int rows = cmd.ExecuteNonQuery();
            return rows;
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            throw e;
        }
    }
}


/// 
/// 执行Sql和Oracle滴混合事务
/// 
/// SQL命令行列表
/// Oracle命令行列表
/// 执行结果 0-由于SQL造成事务失败 -1 由于Oracle造成事务失败 1-整体事务执行成功
public static int ExecuteSqlTran(List list, List oracleCmdSqlList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = conn;
        SqlTransaction tx = conn.BeginTransaction();
        cmd.Transaction = tx;
        try
        {
            foreach (CommandInfo myDE in list)
            {
                string cmdText = myDE.CommandText;
                SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
                PrepareCommand(cmd, conn, tx, cmdText, cmdParms);
                if (myDE.EffentNextType == EffentNextType.SolicitationEvent)
                {
                    if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
                    {
                        tx.Rollback();
                        throw new Exception("违背要求" + myDE.CommandText + "必须符合select count(..的格式");
                    }


                    object obj = cmd.ExecuteScalar();
                    bool isHave = false;
                    if (obj == null && obj == DBNull.Value)
                    {
                        isHave = false;
                    }
                    isHave = Convert.ToInt32(obj) > 0;
                    if (isHave)
                    {
                        //引发事件
                        myDE.OnSolicitationEvent();
                    }
                }
                if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
                {
                    if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
                    {
                        tx.Rollback();
                        throw new Exception("SQL:违背要求" + myDE.CommandText + "必须符合select count(..的格式");
                    }


                    object obj = cmd.ExecuteScalar();
                    bool isHave = false;
                    if (obj == null && obj == DBNull.Value)
                    {
                        isHave = false;
                    }
                    isHave = Convert.ToInt32(obj) > 0;


                    if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
                    {
                        tx.Rollback();
                        throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须大于0");
                    }
                    if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
                    {
                        tx.Rollback();
                        throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须等于0");
                    }
                    continue;
                }
                int val = cmd.ExecuteNonQuery();
                if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
                {
                    tx.Rollback();
                    throw new Exception("SQL:违背要求" + myDE.CommandText + "必须有影响行");
                }
                cmd.Parameters.Clear();
            }
            tx.Commit();
            return 1;
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            tx.Rollback();
            throw e;
        }
        catch (Exception e)
        {
            tx.Rollback();
            throw e;
        }
    }
}


/// 
/// 执行多条SQL语句，实现数据库事务。
/// 
/// 多条SQL语句		
public static int ExecuteSqlTran(List SQLStringList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        SqlCommand cmd = new SqlCommand();
        cmd.Connection = conn;
        SqlTransaction tx = conn.BeginTransaction();
        cmd.Transaction = tx;
        try
        {
            int count = 0;
            for (int n = 0; n < sqlstringlist.count n string strsql='SQLStringList[n];' if strsql.trim.length> 1)
                {
                    cmd.CommandText = strsql;
                    count += cmd.ExecuteNonQuery();
                }
            }
            tx.Commit();
            return count;
        }
        catch
        {
            tx.Rollback();
            return 0;
        }
    }
}


/// 
/// 执行带一个存储过程参数的的SQL语句。
/// 
/// SQL语句
/// 参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加
/// 影响的记录数
public static int ExecuteSql(string SQLString, string content)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand cmd = new SqlCommand(SQLString, connection);
        System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
        myParameter.Value = content;
        cmd.Parameters.Add(myParameter);
        try
        {
            connection.Open();
            int rows = cmd.ExecuteNonQuery();
            return rows;
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            throw e;
        }
        finally
        {
            cmd.Dispose();
            connection.Close();
        }
    }
}


/// 
/// 执行带一个存储过程参数的的SQL语句。
/// 
/// SQL语句
/// 参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加
/// 影响的记录数
public static object ExecuteSqlGet(string SQLString, string content)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand cmd = new SqlCommand(SQLString, connection);
        System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@content", SqlDbType.NText);
        myParameter.Value = content;
        cmd.Parameters.Add(myParameter);
        try
        {
            connection.Open();
            object obj = cmd.ExecuteScalar();
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                return null;
            }
            else
            {
                return obj;
            }
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            throw e;
        }
        finally
        {
            cmd.Dispose();
            connection.Close();
        }
    }
}


/// 
/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
/// 
/// SQL语句
/// 图像字节,数据库的字段类型为image的情况
/// 影响的记录数
public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand cmd = new SqlCommand(strSQL, connection);
        System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Image);
        myParameter.Value = fs;
        cmd.Parameters.Add(myParameter);
        try
        {
            connection.Open();
            int rows = cmd.ExecuteNonQuery();
            return rows;
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            throw e;
        }
        finally
        {
            cmd.Dispose();
            connection.Close();
        }
    }
}


/// 
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// 
/// 计算查询结果语句
/// 查询结果（object）
public static object GetSingle(string SQLString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = new SqlCommand(SQLString, connection))
        {
            try
            {
                connection.Open();
                object obj = cmd.ExecuteScalar();
                if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                {
                    return null;
                }
                else
                {
                    return obj;
                }
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                connection.Close();
                throw e;
            }
        }
    }
}


//执行SQL，设置超时时间
public static object GetSingle(string SQLString, int Times)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = new SqlCommand(SQLString, connection))
        {
            try
            {
                connection.Open();
                cmd.CommandTimeout = Times;
                object obj = cmd.ExecuteScalar();
                if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                {
                    return null;
                }
                else
                {
                    return obj;
                }
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                connection.Close();
                throw e;
            }
        }
    }
}


/// 
/// 执行查询语句，返回SqlDataReader
/// 查询语句
/// SqlDataReader
public static SqlDataReader ExecuteReader(string strSQL)
{
    SqlConnection connection = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand(strSQL, connection);
    try
    {
        connection.Open();
        SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
        return myReader;
    }
    catch (System.Data.SqlClient.SqlException e)
    {
        throw e;
    }


}


/// 
/// 执行查询语句，返回DataSet
/// 
/// 查询语句
/// DataSet
public static DataSet Query(string SQLString)
{


    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        DataSet ds = new DataSet();
        try
        {
            connection.Open();
            SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
            command.Fill(ds, "ds");
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
            throw new Exception(ex.Message);
        }
        return ds;
    }


}


public static DataSet Query(string SQLString, int Times)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        DataSet ds = new DataSet();
        try
        {
            connection.Open();
            SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
            command.SelectCommand.CommandTimeout = Times;
            command.Fill(ds, "ds");
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
            throw new Exception(ex.Message);
        }
        return ds;
    }
}


/// 
/// 执行查询语句，返回DataSet
/// 
/// SqlConnection对象
/// SqlTransaction事务
/// SQL语句
/// DataSet
public static DataSet Query(SqlConnection connection, SqlTransaction trans, string SQLString)
{
    DataSet ds = new DataSet();
    try
    {
        SqlDataAdapter command = new SqlDataAdapter(SQLString, connection);
        command.SelectCommand.Transaction = trans;
        command.Fill(ds, "ds");
    }
    catch (System.Data.SqlClient.SqlException ex)
    {
        throw new Exception(ex.Message);
    }
    return ds;


}
#endregion

执行带参数的SQL语句

#region 执行带参数的SQL语句


/// 
/// 执行SQL语句，返回影响的记录数
/// 
/// SQL语句
/// 影响的记录数
public static int ExecuteSql(string SQLString, params SqlParameter[] cmdParms)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = new SqlCommand())
        {
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                int rows = cmd.ExecuteNonQuery();
                cmd.Parameters.Clear();
                return rows;
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                throw e;
            }
        }
    }
}


/// 
/// 执行SQL语句，返回影响的记录数
/// 
/// SqlConnection对象
/// SqlTransaction对象
/// SQL语句
/// 影响的记录数
public static int ExecuteSql(SqlConnection connection, SqlTransaction trans, string SQLString, params SqlParameter[] cmdParms)
{
    using (SqlCommand cmd = new SqlCommand())
    {
        try
        {
            PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
            int rows = cmd.ExecuteNonQuery();
            cmd.Parameters.Clear();
            return rows;
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            //trans.Rollback();
            throw e;
        }
    }
}


/// 
/// 执行多条SQL语句，实现数据库事务。
/// 
/// SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）
public static void ExecuteSqlTran(Hashtable SQLStringList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlTransaction trans = conn.BeginTransaction())
        {
            SqlCommand cmd = new SqlCommand();
            try
            {
                //循环
                foreach (DictionaryEntry myDE in SQLStringList)
                {
                    string cmdText = myDE.Key.ToString();
                    SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
                    PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                    int val = cmd.ExecuteNonQuery();
                    cmd.Parameters.Clear();
                }
                trans.Commit();
            }
            catch
            {
                trans.Rollback();
                throw;
            }
        }
    }
}


/// 
/// 执行多条SQL语句，实现数据库事务。
/// 
/// SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）
public static int ExecuteSqlTran(System.Collections.Generic.List cmdList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlTransaction trans = conn.BeginTransaction())
        {
            SqlCommand cmd = new SqlCommand();
            try
            {
                int count = 0;
                //循环
                foreach (CommandInfo myDE in cmdList)
                {
                    string cmdText = myDE.CommandText;
                    SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
                    PrepareCommand(cmd, conn, trans, cmdText, cmdParms);


                    if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
                    {
                        if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
                        {
                            trans.Rollback();
                            return 0;
                        }


                        object obj = cmd.ExecuteScalar();
                        bool isHave = false;
                        if (obj == null && obj == DBNull.Value)
                        {
                            isHave = false;
                        }
                        isHave = Convert.ToInt32(obj) > 0;


                        if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
                        {
                            trans.Rollback();
                            return 0;
                        }
                        if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
                        {
                            trans.Rollback();
                            return 0;
                        }
                        continue;
                    }
                    int val = cmd.ExecuteNonQuery();
                    count += val;
                    if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
                    {
                        trans.Rollback();
                        return 0;
                    }
                    cmd.Parameters.Clear();
                }
                trans.Commit();
                return count;
            }
            catch
            {
                trans.Rollback();
                throw;
            }
        }
    }
}


/// 
/// 执行多条SQL语句，实现数据库事务。
/// 
/// SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）
public static void ExecuteSqlTranWithIndentity(System.Collections.Generic.List SQLStringList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlTransaction trans = conn.BeginTransaction())
        {
            SqlCommand cmd = new SqlCommand();
            try
            {
                int indentity = 0;
                //循环
                foreach (CommandInfo myDE in SQLStringList)
                {
                    string cmdText = myDE.CommandText;
                    SqlParameter[] cmdParms = (SqlParameter[])myDE.Parameters;
                    foreach (SqlParameter q in cmdParms)
                    {
                        if (q.Direction == ParameterDirection.InputOutput)
                        {
                            q.Value = indentity;
                        }
                    }
                    PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                    int val = cmd.ExecuteNonQuery();
                    foreach (SqlParameter q in cmdParms)
                    {
                        if (q.Direction == ParameterDirection.Output)
                        {
                            indentity = Convert.ToInt32(q.Value);
                        }
                    }
                    cmd.Parameters.Clear();
                }
                trans.Commit();
            }
            catch
            {
                trans.Rollback();
                throw;
            }
        }
    }
}


/// 
/// 执行多条SQL语句，实现数据库事务。
/// 
/// SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）
public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        conn.Open();
        using (SqlTransaction trans = conn.BeginTransaction())
        {
            SqlCommand cmd = new SqlCommand();
            try
            {
                int indentity = 0;
                //循环
                foreach (DictionaryEntry myDE in SQLStringList)
                {
                    string cmdText = myDE.Key.ToString();
                    SqlParameter[] cmdParms = (SqlParameter[])myDE.Value;
                    foreach (SqlParameter q in cmdParms)
                    {
                        if (q.Direction == ParameterDirection.InputOutput)
                        {
                            q.Value = indentity;
                        }
                    }
                    PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                    int val = cmd.ExecuteNonQuery();
                    foreach (SqlParameter q in cmdParms)
                    {
                        if (q.Direction == ParameterDirection.Output)
                        {
                            indentity = Convert.ToInt32(q.Value);
                        }
                    }
                    cmd.Parameters.Clear();
                }
                trans.Commit();
            }
            catch
            {
                trans.Rollback();
                throw;
            }
        }
    }
}


/// 
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// 
/// 计算查询结果语句
/// 查询结果（object）
public static object GetSingle(string SQLString, params SqlParameter[] cmdParms)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        using (SqlCommand cmd = new SqlCommand())
        {
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                object obj = cmd.ExecuteScalar();
                cmd.Parameters.Clear();
                if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                {
                    return null;
                }
                else
                {
                    return obj;
                }
            }
            catch (System.Data.SqlClient.SqlException e)
            {
                throw e;
            }
        }
    }
}


/// 
/// 执行一条计算查询结果语句，返回查询结果（object）。
/// 
/// SqlConnection对象
/// SqlTransaction事务
/// 计算查询结果语句
/// 查询结果（object）
public static object GetSingle(SqlConnection connection, SqlTransaction trans, string SQLString, params SqlParameter[] cmdParms)
{
    using (SqlCommand cmd = new SqlCommand())
    {
        try
        {
            PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
            object obj = cmd.ExecuteScalar();
            cmd.Parameters.Clear();
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                return null;
            }
            else
            {
                return obj;
            }
        }
        catch (System.Data.SqlClient.SqlException e)
        {
            //trans.Rollback();
            throw e;
        }
    }
}


/// 
/// 执行查询语句，返回SqlDataReader
/// 查询语句
/// SqlDataReader
public static SqlDataReader ExecuteReader(string SQLString, params SqlParameter[] cmdParms)
{
    SqlConnection connection = new SqlConnection(connectionString);
    SqlCommand cmd = new SqlCommand();
    try
    {
        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
        SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
        cmd.Parameters.Clear();
        return myReader;
    }
    catch (System.Data.SqlClient.SqlException e)
    {
        throw e;
    }
}


/// 
/// 执行查询语句，返回DataSet
/// 
/// 查询语句
/// DataSet
public static DataSet Query(string SQLString, params SqlParameter[] cmdParms)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        SqlCommand cmd = new SqlCommand();
        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
        using (SqlDataAdapter da = new SqlDataAdapter(cmd))
        {
            DataSet ds = new DataSet();
            try
            {
                da.Fill(ds, "ds");
                cmd.Parameters.Clear();
            }
            catch (System.Data.SqlClient.SqlException ex)
            {
                throw new Exception(ex.Message);
            }
            return ds;
        }
    }
}


/// 
/// 执行查询语句，返回DataSet
/// 
/// SqlConnection对象
/// SqlTransaction事务
/// 查询语句
/// DataSet
public static DataSet Query(SqlConnection connection, SqlTransaction trans, string SQLString, params SqlParameter[] cmdParms)
{
    SqlCommand cmd = new SqlCommand();
    PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
    using (SqlDataAdapter da = new SqlDataAdapter(cmd))
    {
        DataSet ds = new DataSet();
        try
        {
            da.Fill(ds, "ds");
            cmd.Parameters.Clear();
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
            //trans.Rollback();
            throw new Exception(ex.Message);
        }
        return ds;
    }
}


private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
{
    if (conn.State != ConnectionState.Open)
        conn.Open();
    cmd.Connection = conn;
    cmd.CommandText = cmdText;
    if (trans != null)
        cmd.Transaction = trans;
    cmd.CommandType = CommandType.Text;//cmdType;
    if (cmdParms != null)
    {




        foreach (SqlParameter parameter in cmdParms)
        {
            if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                (parameter.Value == null))
            {
                parameter.Value = DBNull.Value;
            }
            cmd.Parameters.Add(parameter);
        }
    }
}


#endregion

存储过程操作

#region 存储过程操作
/// 
/// 执行存储过程，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
/// 
/// 存储过程名
/// 存储过程参数
/// SqlDataReader
public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
{
    SqlConnection connection = new SqlConnection(connectionString);
    SqlDataReader returnReader;
    connection.Open();
    SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
    command.CommandType = CommandType.StoredProcedure;
    returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
    return returnReader;
}


/// 
/// 执行存储过程
/// 
/// 存储过程名
/// 存储过程参数
/// DataSet结果中的表名
/// DataSet
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        DataSet dataSet = new DataSet();
        connection.Open();
        SqlDataAdapter sqlDA = new SqlDataAdapter();
        sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
        sqlDA.Fill(dataSet, tableName);
        connection.Close();
        return dataSet;
    }
}


/// 
/// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值)
/// 
/// 数据库连接
/// 存储过程名
/// 存储过程参数
/// SqlCommand
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;
}


/// 
/// 执行存储过程，返回影响的行数		
/// 
/// 存储过程名
/// 存储过程参数
/// 影响的行数
/// 
public static 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;
    }
}


/// 
/// 创建 SqlCommand 对象实例(用来返回一个整数值)	
/// 
/// 存储过程名
/// 存储过程参数
/// SqlCommand 对象实例
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;
}
#endregion

以上就实现了对数据的所有操作，快去试试吧。

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