存储过程的实例:
PROCEDURE TEST_C(temp out varchar2,a INvarchar2,b in varchar2)
IS
BEGIN
temp:=a || b;
END;
调用方法1:
说明:要在程序开头加入Imports System.Data.OleDb
Dim dbConn As New OleDbConnection
Dim dbComm As OleDbCommand
dbConn.ConnectionString = "Provider=MSDAORA.1;User ID=xxx;Password=xxx;Data Source=xxx;"
dbConn.Open()
dbComm = dbConn.CreateCommand
dbComm.Parameters.Add("temp",OleDbType.VarChar,30).Direction = ParameterDirection.Output
dbComm.Parameters.Add("a",30).Direction = ParameterDirection.Input
dbComm.Parameters("a").Value = "test "
dbComm.Parameters.Add("b",30).Direction = ParameterDirection.Input
dbComm.Parameters("b").Value = "OK"
dbComm.CommandText = "{CALL TEST_C(?,?,?)}" '这里就是使用"？"来代替参数
dbComm.CommandType = CommandType.Text
dbComm.ExecuteNonQuery()
dbConn.Close()
MessageBox.Show(dbComm.Parameters("temp").Value)
调用方法2:
说明:要在程序开头加入Imports System.Data.OracleClient
Dim oraConn As New OracleConnection
Dim oraComm As New OracleCommand
oraConn.ConnectionString = "Data Source=xxx;User Id=xxx;Password=xxx"
oraComm.Connection = oraConn
oraComm.Parameters.Add("temp",OracleType.VarChar,10).Direction = ParameterDirection.Output
oraComm.Parameters.Add("a",10).Direction = ParameterDirection.Input
oraComm.Parameters("a").Value = "test "
oraComm.Parameters.Add("b",10).Direction = ParameterDirection.Input
oraComm.Parameters("b").Value = "OK"
oraConn.Open()
oraComm.CommandText = "TEST_C"
oraComm.CommandType = CommandType.StoredProcedure
oraComm.ExecuteNonQuery()
oraConn.Close()
MessageBox.Show(oraComm.Parameters("temp").Value) （编辑：李大同）
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