vb.net SQL 接続されているか判別
Imports System.Data.OleDb Dim Cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=G:\DB\PATHDB.mdb") If Cn.State = ConnectionState.Closed Then Cn.Open()
Imports System.Data.OleDb Dim Cn As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=G:\DB\PATHDB.mdb") If Cn.State = ConnectionState.Closed Then Cn.Open()