ado.net中登录页面的编码

问题描述

我想要一个登录页面的编码页面或设计页面，在该页面中我们已经创建了数据库，或者我们已经想要在运行时登录时在数据库中插入了用户名或密码的值，因此必须在其中插入那些已经存在于数据库中的值

i want a coding or a design page for a login page in which where we are already make a database or we are already inserted the value of username or password in our database when we want to login in the runtime we have to inserted those value which are already in the database

推荐答案

Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
        con.Open()
        cmd = New SqlCommand("select * from login where username='" + UsernameTextBox.Text.ToString + "' and password='" + PasswordTextBox.Text.ToString + "'", con)
        dReader = cmd.ExecuteReader()
        If dReader.Read = True Then
            MDIParent1.Show()
            Me.Hide()
            con.Close()
        Else
            MsgBox("sorry")
        End If
        con.Close()
    End Sub

tryyyyyyyyyyy

tryyyyyyyyyyy it

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