.net链接Oracle数据操作类库
public abstract class OracleHelper
{
public OracleHelper() { } /// <summary>
/// 数据库连接字符串
/// </summary>
protected static string connectionString = ConfigurationManager.AppSettings["Oracle_BPMS"]; #region 执行简单SQL语句 /// <summary>
/// 执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(string SQLString)
{
using (OracleConnection connection = new OracleConnection(connectionString))
{
using (OracleCommand cmd = new OracleCommand(SQLString, connection))
{
try
{
connection.Open();
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
} /// <summary>
/// 2012-2-21新增重载，执行SQL语句，返回影响的记录数
/// </summary>
/// <param name="connection">SqlConnection对象</param>
/// <param name="trans">SqlTransaction事件</param>
/// <param name="SQLString">SQL语句</param>
/// <returns>影响的记录数</returns>
public static int ExecuteSql(OracleConnection connection, OracleTransaction trans, string SQLString)
{
using (OracleCommand cmd = new OracleCommand(SQLString, connection))
{
try
{
cmd.Connection = connection;
cmd.Transaction = trans;
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
trans.Rollback();
throw e;
}
}
} public static int ExecuteSqlByTime(string SQLString, int Times)
{
using (OracleConnection connection = new OracleConnection(connectionString))
{
using (OracleCommand cmd = new OracleCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = Times;
int rows = cmd.ExecuteNonQuery();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
} /// <summary>
/// 执行查询语句，返回DataSet
/// </summary>
/// <param name="SQLString">查询语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(string SQLString)
{ using (OracleConnection connection = new OracleConnection(connectionString))
{
DataSet ds = new DataSet();
try
{
connection.Open();
OracleDataAdapter command = new OracleDataAdapter(SQLString, connection);
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds;
} } /// <summary>
/// 2012-2-21新增重载，执行查询语句，返回DataSet
/// </summary>
/// <param name="connection">SqlConnection对象</param>
/// <param name="trans">SqlTransaction事务</param>
/// <param name="SQLString">SQL语句</param>
/// <returns>DataSet</returns>
public static DataSet Query(OracleConnection connection, OracleTransaction trans, string SQLString)
{
DataSet ds = new DataSet();
try
{
OracleDataAdapter command = new OracleDataAdapter(SQLString, connection);
command.SelectCommand.Transaction = trans;
command.Fill(ds, "ds");
}
catch (System.Data.SqlClient.SqlException ex)
{
throw new Exception(ex.Message);
}
return ds; } #endregion #region 其他方法
/// <summary>
/// 执行命令,返回受影响的行数
/// </summary>
/// <param name="tran">事务类 </param>
/// <param name="cmdText">操作字符串</param>
/// <param name="parms">sql语句需要的参数</param>
/// <param name="cmdtype">执行类型,是存储过程还是普通sql</param>
/// <returns>返回受影响的行数</returns>
public static int ExecuteNonQuery(OracleTransaction tran, string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
int retVal = ;
OracleCommand cmd = new OracleCommand(cmdText);
cmd.Connection = tran.Connection;
cmd.Transaction = tran;
cmd.CommandType = cmdtype;
if (parms != null)
{
cmd.Parameters.AddRange(parms);
}
retVal = cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
return retVal;
} /// <summary>
/// 执行命令,返回受影响的行数
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回受影响的行数</returns>
public static int ExecuteNonQuery(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
int retVal;
using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; if (parms != null)
{
//添加参数
cmd.Parameters.AddRange(parms);
}
conn.Open();
retVal = cmd.ExecuteNonQuery();
conn.Close();
} return retVal;
} /// <summary>
/// 执行命令, 返回受影响的行数
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="cmdtype"></param>
/// <returns>返回受影响的行数</returns>
public static int ExecuteNonQuery(string cmdText, CommandType cmdtype)
{
int retVal; using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; conn.Open(); retVal = cmd.ExecuteNonQuery();
conn.Close();
} return retVal;
} /// <summary>
/// 执行命令, 返回受影响的行数
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <returns>返回受影响的行数</returns>
public static int ExecuteNonQuery(string cmdText)
{
int retVal;
using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = CommandType.StoredProcedure; conn.Open();
retVal = cmd.ExecuteNonQuery(); conn.Close();
}
return retVal;
} /// <summary>
/// 执行命令,返回第一行第一列
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回第一行第一列,不存在返回Null</returns>
public static object ExecuteScalar(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
object retVal; using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; if (parms != null)
{
//添加参数
cmd.Parameters.AddRange(parms);
} conn.Open();
retVal = cmd.ExecuteScalar();
conn.Close();
}
return retVal == DBNull.Value ? null : retVal;
} /// <summary>
/// 执行命令,返回第一行第一列
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回第一行第一列,不存在返回Null</returns>
public static object ExecuteScalar(OracleTransaction tran, string cmdText, OracleParameter[] parms, CommandType cmdtype)
{ object retVal; OracleCommand cmd = new OracleCommand(cmdText);
cmd.Connection = tran.Connection;
cmd.Transaction = tran;
cmd.CommandType = cmdtype;
if (parms != null)
{
//添加参数
cmd.Parameters.AddRange(parms);
} retVal = cmd.ExecuteScalar(); return retVal == DBNull.Value ? null : retVal;
} /// <summary>
/// 执行命令,返回第一行第一列
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回第一行第一列,不存在返回Null</returns>
public static object ExecuteScalar(string cmdText, CommandType cmdtype)
{
object retVal; using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; conn.Open();
retVal = cmd.ExecuteScalar(); conn.Close();
}
return retVal == DBNull.Value ? null : retVal;
} /// <summary>
/// 执行命令,返回第一行第一列
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <returns>返回第一行第一列,不存在返回Null</returns>
public static object ExecuteScalar(string cmdText)
{
object retVal; using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = CommandType.StoredProcedure; conn.Open();
retVal = cmd.ExecuteScalar();
conn.Close();
} return retVal == DBNull.Value ? null : retVal;
} /// <summary>
/// 执行命令,返回一个数据读取器,注意使用完毕后关闭读取器
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回一个数据读取器</returns>
public static OracleDataReader ExecuteReader(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
OracleDataReader reader; OracleConnection conn = new OracleConnection(connectionString); OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; if (parms != null)
{
//添加参数
cmd.Parameters.AddRange(parms);
} conn.Open();
reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return reader;
} /// <summary>
/// 执行命令,返回一个数据读取器,注意使用完毕后关闭读取器
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回一个数据读取器</returns>
public static OracleDataReader ExecuteReader(string cmdText, CommandType cmdtype)
{
OracleDataReader reader; OracleConnection conn = new OracleConnection(connectionString);
OracleCommand cmd = new OracleCommand(cmdText, conn);
cmd.CommandType = cmdtype; conn.Open();
reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return reader;
}
/// <summary>
/// 执行命令,返回DataTable
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回DataTable</returns>
public static DataTable ExecuteDataTable(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
DataTable dt = new DataTable(); using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = cmdtype; if (parms != null)
{
apt.SelectCommand.Parameters.AddRange(parms);
} apt.Fill(dt);
conn.Close();
}
return dt;
} /// <summary>
/// 执行命令,返回DataSet
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回DataSet</returns>
public static DataSet ExecuteDataSet(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
DataSet ds = new DataSet(); using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = cmdtype; if (parms != null)
{
apt.SelectCommand.Parameters.AddRange(parms);
} apt.Fill(ds);
conn.Close();
}
return ds;
} /// <summary>
/// 执行命令,返回DataTable
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回DataTable</returns>
public static DataTable ExecuteDataTable(string cmdText, CommandType cmdtype)
{
DataTable dt = new DataTable(); using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = cmdtype;
apt.Fill(dt);
conn.Close();
}
return dt;
} /// <summary>
/// 执行命令,返回DataTable
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <returns>返回DataTable</returns>
public static DataTable ExecuteDataTable(string cmdText)
{
DataTable dt = new DataTable(); using (OracleConnection conn = new OracleConnection(connectionString))
{
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = CommandType.StoredProcedure;
apt.Fill(dt);
conn.Close();
}
return dt;
} /// <summary>
/// 执行命令,返回第一行,不存在返回Null
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="parms">需要的参数</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回第一行,不存在返回Null</returns>
public static DataRow ExecuteFirstRow(string cmdText, OracleParameter[] parms, CommandType cmdtype)
{
DataRow row = null;
using (OracleConnection conn = new OracleConnection(connectionString))
{
DataTable dt = new DataTable();
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = cmdtype; if (parms != null)
{
apt.SelectCommand.Parameters.AddRange(parms);
}
apt.Fill(dt);
if (dt.Rows.Count > )
{
row = dt.Rows[];
}
conn.Close();
}
return row;
} /// <summary>
/// 执行命令,返回第一行,不存在返回Null
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <param name="cmdtype">如何解释命令字符串</param>
/// <returns>返回第一行,不存在返回Null</returns>
public static DataRow ExecuteFirstRow(string cmdText, CommandType cmdtype)
{
DataRow row = null;
using (OracleConnection conn = new OracleConnection(connectionString))
{
DataTable dt = new DataTable();
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = cmdtype;
apt.Fill(dt);
if (dt.Rows.Count > )
{
row = dt.Rows[];
}
conn.Close();
}
return row;
} /// <summary>
/// 执行命令,返回第一行,不存在返回Null
/// </summary>
/// <param name="cmdText">查询的文本</param>
/// <returns>返回第一行,不存在返回Null</returns>
public static DataRow ExecuteFirstRow(string cmdText)
{
DataRow row = null;
using (OracleConnection conn = new OracleConnection(connectionString))
{
DataTable dt = new DataTable();
OracleDataAdapter apt = new OracleDataAdapter(cmdText, conn);
apt.SelectCommand.CommandType = CommandType.StoredProcedure;
apt.Fill(dt);
if (dt.Rows.Count > )
{
row = dt.Rows[];
}
conn.Close();
}
return row;
} #endregion
}
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