【IT168 技术文档】Asp.net的多层架构主要是为了解决数据层，逻辑层，表示层等之间的关系。我的做法是这样的：首先建立一个DataCore的基类。基类里面封装了一些低层的数据库的基本操作，比如说数据库联接，调用存储过程等等。在这里面有一个地方值得注意，通过对一个函数的重载可以实现调用不同功能的存储过程。以下代码示例：
protected int RunProcedure(string storedProcName, IDataParameter[] parameters, out introwsAffected )
{int result;Connection.Open();
SqlCommand command = BuildIntCommand( storedProcName, parameters );
rowsAffected = command.ExecuteNonQuery();r
esult = (int)command.Parameters["ReturnValue"].Value;Connection.Close();
return result;
}
protected SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
{
SqlDataReader returnReader;
Connection.Open();
SqlCommand command = BuildQueryCommand( storedProcName, parameters );
command.CommandType = CommandType.StoredProcedure;
returnReader = command.ExecuteReader();
//Connection.Close();
return returnReader;
}
protected DataSet RunProcedure(string storedProcName, IDataParameter[] parameters,string tableName )
{
DataSet dataSet = new DataSet();
Connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();return dataSet;
}
protected void RunProcedure(string storedProcName, IDataParameter[] parameters,DataSet dataSet, string tableName )
{
Connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildIntCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
}
{int result;Connection.Open();
SqlCommand command = BuildIntCommand( storedProcName, parameters );
rowsAffected = command.ExecuteNonQuery();r
esult = (int)command.Parameters["ReturnValue"].Value;Connection.Close();
return result;
}
protected SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters )
{
SqlDataReader returnReader;
Connection.Open();
SqlCommand command = BuildQueryCommand( storedProcName, parameters );
command.CommandType = CommandType.StoredProcedure;
returnReader = command.ExecuteReader();
//Connection.Close();
return returnReader;
}
protected DataSet RunProcedure(string storedProcName, IDataParameter[] parameters,string tableName )
{
DataSet dataSet = new DataSet();
Connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildQueryCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();return dataSet;
}
protected void RunProcedure(string storedProcName, IDataParameter[] parameters,DataSet dataSet, string tableName )
{
Connection.Open();
SqlDataAdapter sqlDA = new SqlDataAdapter();
sqlDA.SelectCommand = BuildIntCommand( storedProcName, parameters );
sqlDA.Fill( dataSet, tableName );
Connection.Close();
}
