Login Using Custom Check Against Database

I need to check a login against a database of users. Any help would be appreciated. Thank you!!

This is what I have so far:

 Dim Myconnection As SqlConnection Dim MyCommand As SqlCommand

Dim mySQL As StringDim username As String = TextBox1.TextDim password As String = TextBox2.Text

 Myconnection = New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;Connect Timeout=30;User Instance=True")

mySQL = "SELECT username, password FROM tblUser WHERE username =" & username & " And password = " & password & ";"MyCommand = New SqlCommand(mySQL, Myconnection)

 

 

MyCommand.Connection.Open()

MyCommand.ExecuteNonQuery()

MyCommand.Connection.Close()