使用VB.Net和SQL Server登录

我是一个有VB.Net和SQL Server的乞丐，我想做一个登录序列。我想用SELECT COUNT验证用户和密码，但我不能设置两个条件（用户和密码）。我的登录功能是：

      Public Function Login(ByVal User As String, ByVal Pass As String) As Integer
    Dim query1 As String = ""
    Dim num1 As Integer        
    query1 = "Select Count(Us_User) from SC_User Where Us_User='" & User & "'" In this line i want to count the two things.        
    num1 = Access.LoadQuery(query1)
    Return num1
End Function

提前谢谢。英语不是我的第一语言。

试试这种方法

query1 = "Select Count(Us_User) from SC_User Where Us_User='" & User & "' and Password='" & Pass  &"'" 

这样试试

query1 = "Select Count(Us_User) from SC_User Where Us_User='" & User & "' and Password='" & Pass  &"'"