DBHelper连接oracle数据库类

%-- Name: Author: Description: --% %@ CodeTemplate Language=C# TargetLanguage=Text Src= Inherits= Debug=False Description=Template description here. % %@ Property Name=SampleStringProperty Type=System.String Default=SomeValue Optional=True

Name:
Author:
Description:
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using System;
using System.Collections.Generic;
using System.Text;
using System.Data.OracleClient;
using System.Data;
using System.Configuration;

namespace WindowsFormsApplication1
{
public class DBHelper
{
public static string ConnString
{
get
{
return ConfigurationManager.ConnectionStrings["db"].ConnectionString;
}
}
public static OracleConnection Connection
{
get
{
return new OracleConnection(ConnString);
}
}

public static int ExecuteCommand(string sql)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Connection.Open();
try
{
int result = cmd.ExecuteNonQuery();
return result;
}
finally
{
cmd.Connection.Close();
cmd.Connection.Dispose();
}
}

public static int ExecuteCommand(string sql, OracleParameter[] values)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Connection.Open();
try
{
cmd.Parameters.AddRange(values);
return cmd.ExecuteNonQuery();
}
finally
{
cmd.Connection.Close();
cmd.Connection.Dispose();
}
}

public static int GetScalar(string sql)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Connection.Open();
try
{
int result = Convert.ToInt32(cmd.ExecuteScalar());
return result;
}
finally
{
cmd.Connection.Close();
cmd.Connection.Dispose();
}
}

public static int GetScalar(string sql, OracleParameter[] values)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Connection.Open();
try
{
cmd.Parameters.AddRange(values);
int result = Convert.ToInt32(cmd.ExecuteScalar());
return result;
}
finally
{
cmd.Connection.Close();
cmd.Connection.Dispose();
}
}

public static OracleDataReader GetReader(string sql)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Connection.Open();
OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return reader;
}

public static OracleDataReader GetReader(string sql, OracleParameter[] values)
{
OracleCommand cmd = new OracleCommand(sql, Connection);
cmd.Parameters.AddRange(values);
cmd.Connection.Open();
OracleDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return reader;
}

public static DataSet GetDataSet(string sql)
{
DataSet ds = new DataSet();
OracleCommand cmd = new OracleCommand(sql, Connection);
try
{
OracleDataAdapter da = new OracleDataAdapter(cmd);
da.Fill(ds);
return ds;
}
finally
{
cmd.Connection.Dispose();
}
}

public static DataSet GetDataSet(string sql, OracleParameter[] values)
{
DataSet ds = new DataSet();
OracleCommand cmd = new OracleCommand(sql, Connection);
try
{
cmd.Parameters.AddRange(values);
OracleDataAdapter da = new OracleDataAdapter(cmd);
da.Fill(ds);
return ds;
}
finally
{
cmd.Connection.Dispose();
}
}

}
}

public string SampleMethod()
{
return "Method output.";
}