简单的C#使用Oracle

1.设置Scott账户的权限，使之能创建表。
2.create table employee(UserID number(4), UserName nvarchar2(32));
3.创建包，存储过程。


create or replace procedure AddNew(pUserID in Number,pUserName in nvarchar2) is


begin


insert into Employee(UserID ,UserName) values(pUserID,pUserName);


end AddNew;




－－


create or replace package Employee_Op


as


type mycType is ref cursor;


procedure ShowAll(pC out mycType);


end Employee_Op;






－－


create or replace package body Employee_Op


as


procedure ShowAll(pC out mycType)


is


begin


open pC for select UserID,UserName from Employee;


end ShowAll;


end Employee_Op;



4.在C# 中调用：
用DataReader:


string ConnStr = "data source=First;User ID = scott;Password=tiger";




OracleConnection Conn = new OracleConnection(ConnStr);


Conn.Open();




OracleCommand Cmd = new OracleCommand();


Cmd.Connection = Conn;




Cmd.CommandText = "EMPLOYEE_OP.SHOWALL";


Cmd.CommandType = CommandType.StoredProcedure;




Cmd.Parameters.Add("PC",OracleType.Cursor);


Cmd.Parameters[0].Direction = ParameterDirection.Output;




OracleDataReader DR = Cmd.ExecuteReader();




DataGrid1.DataSource = DR;


DataBind();




DR.Close();


Conn.Close();
用DataSet:


string ConnStr = "data source=First;User ID = scott;Password=tiger";




OracleConnection Conn = new OracleConnection(ConnStr);


Conn.Open();




OracleCommand Cmd = new OracleCommand();


Cmd.Connection = Conn;




Cmd.CommandText = "EMPLOYEE_OP.SHOWALL";


Cmd.CommandType = CommandType.StoredProcedure;




Cmd.Parameters.Add("PC",OracleType.Cursor);


Cmd.Parameters[0].Direction = ParameterDirection.Output;




OracleDataAdapter DA = new OracleDataAdapter(Cmd);




//DA.TableMappings.Add("Table","Employee");




DataSet DS = new DataSet();


DA.Fill(DS);




Response.Write( DS.Tables[0].Rows.Count.ToString() );




DataGrid2.DataSource = DS.Tables[0].DefaultView;


DataGrid2.DataBind();




Cmd.Parameters.Clear();


Conn.Close();



插入数据：


string ConnStr = "data source=First;User ID = scott;Password=tiger";




OracleConnection Conn = new OracleConnection(ConnStr);


Conn.Open();




OracleCommand Cmd = new OracleCommand();


Cmd.Connection = Conn;




Cmd.CommandType = CommandType.StoredProcedure;


Cmd.CommandText = "AddNew";




Cmd.Parameters.Add( new OracleParameter("pUserID",OracleType.Number,4) );


Cmd.Parameters.Add(new OracleParameter("pUserName",OracleType.NVarChar,32) );






Cmd.Parameters[0].Direction = ParameterDirection.Input;


Cmd.Parameters[1].Direction = ParameterDirection.Input;




Cmd.Parameters[0].Value = int.Parse( lblID.Text.ToString() ) ;


Cmd.Parameters[1].Value = lblName.Text.ToString() ;




Cmd.ExecuteNonQuery();




Conn.Close();




dsbtn_Click(this,EventArgs.Empty);