[求助]如何判定dbset.tables("customer")中的记录总数为0个?
基本定义部分如下:Dim constr As String = "uid =GsmGps;pwd =gps;database =GsmGps;server =吴长树"
Dim mycon As New SqlConnection(constr)
Dim mydc As SqlDataAdapter
Dim dbset As New DataSet()
dim id as string ="123456"
mydc = new sqldataadapter("select * from customer where id='"& id &"'",mycon)
mydc.fill(dbset,"customer")
现在如何判定dbset.tables("customer")中的记录总数为0个?