|
();
connection.Close();
connection.Dispose();
}
return result;
}
/// <summary>
/// 执行数据库查询操作,返回OracleDataReader类型的内存结果集
/// </summary>
/// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>
/// <param name="commandParameters">命令参数集合</param>
/// <returns>当前查询操作返回的OracleDataReader类型的内存结果集</returns>
internal static OracleDataReader ExecuteReader(string cmdText, params OracleParameter[] commandParameters)
{
OracleCommand command = new OracleCommand();
OracleConnection connection = new OracleConnection(connstr);
OracleDataReader reader = null;
try
{
PrepareCommand(command, connection, null,CommandType.Text, cmdText, commandParameters);
reader = command.ExecuteReader(CommandBehavior.CloseConnection);
command.Parameters.Clear();
return reader;
}
catch
{
command.Dispose();
connection.Close();
throw;
}
}
/// <summary>
/// 执行数据库查询操作,返回DataSet类型的结果集
/// </summary>
/// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>
/// <param name="commandParameters">命令参数集合</param>
/// <returns>当前查询操作返回的DataSet类型的结果集</returns>
internal static DataSet ExecuteDataSet(string cmdText, params OracleParameter[] commandParameters)
{
OracleCommand command = new OracleCommand();
OracleConnection connection = new OracleConnection(connstr);
DataSet dataset = null;
try
{
PrepareCommand(command, connection, null,CommandType.Text, cmdText, commandParameters);
OracleDataAdapter adapter = new OracleDataAdapter();
adapter.SelectCommand = command;
dataset = new DataSet();
adapter.Fill(dataset);
command.Parameters.Clear();
}
catch
{
throw;
}
finally
{
command.Dispose();
connection.Close();
connection.Dispose();
}
return dataset;
}
/// <summary>
/// 执行数据库查询操作,返回DataTable类型的结果集
/// </summary>
/// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>
/// <param name="commandParameters">命令参数集合</param>
/// <returns>当前查询操作返回的DataTable类型的结果集</returns>
internal static DataTable ExecuteDataTable(string cmdText, params OracleParameter[] commandParameters)
{
OracleCommand command = new OracleCommand();
OracleConnection connection = new OracleConnection(connstr);
DataTable table = null;
try
{
PrepareCommand(command, connection, null,CommandType.Text, cmdText, commandParameters);
OracleDataAdapter adapter = new OracleDataAdapter();
adapter.SelectCommand = command;
table = new DataTable();
adapter.Fill(table);
command.Parameters.Clear();
}
catch
{
throw;
}
finally
{
command.Dispose();
connection.Close();
connection.Dispose();
}
return table;
}
/// <summary>
/// 执行数据库查询操作,返回结果集中位于第一行第一列的Object类型的值
/// </summary>
/// <param name="cmdText">Oracle存储过程名称或PL/SQL命令</param>
/// <param name="commandParameters">命令参数集合</param>
/// <returns>当前查询操作返回的结果集中位于第一行第一列的Object类型的值</returns>
internal static object ExecuteScalar(string cmdText, params OracleParamet |