SQLServer

これも覚書、前にもくらった記憶が（苦笑）

ストアドからOutputされた値をCommandItemで受け取ったら、Connect Close後にしか
中身が見えないことに注意！
　

' Assumes that connection is a valid SqlConnection object.
Dim command As SqlCommand = New SqlCommand("SampleProc", connection)
command.CommandType = CommandType.StoredProcedure

Dim parameter As SqlParameter = command.Parameters.Add( _
  "RETURN_VALUE", SqlDbType.Int)
parameter.Direction = ParameterDirection.ReturnValue

parameter = command.Parameters.Add( _
  "@InputParm", SqlDbType.NVarChar, 12)
parameter.Value = "Sample Value"

parameter = command.Parameters.Add( _
  "@OutputParm", SqlDbType.NVarChar, 28)
parameter.Direction = ParameterDirection.Output

connection.Open()

Dim reader As SqlDataReader = command.ExecuteReader()

Console.WriteLine( _
  "{0}, {1}", reader.GetName(0), reader.GetName(1))

Do While reader.Read()
  Console.WriteLine( _
    "{0}, {1}", reader.GetInt32(0), reader.GetString(1))
Loop

reader.Close()
connection.Close()

Console.WriteLine( _
  " @OutputParm: {0}", command.Parameters("@OutputParm").Value)
Console.WriteLine( _
  "RETURN_VALUE: {0}", command.Parameters("RETURN_VALUE").Value)