Hai,
   I am doing one Project(WindowsApplication using VB.NET)

  I want to check the valid name with valid password which is stored in SQL Server Database.

Plz send me a sample coding for this one..

no problem here
see the following code:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim con As New SqlConnection
        Dim cmd As New SqlCommand
        Dim No As String
        Dim p As SqlParameter
        con.ConnectionString = "user id=UserName;data source=(local);persist security info=True;initial catalog=DatabaseName;password=PassWord"
        cmd.Connection = con
        cmd.CommandType = CommandType.Text
        p = cmd.Parameters.Add("@user", Convert.ToInt16(0))
        p = cmd.Parameters.Add("@pass", 1)
        cmd.Parameters("@user").Value = txtuser.Text
        cmd.Parameters("@pass").Value = txtpassword.Text
        cmd.CommandText = "SELECT AdminstratorNo, UserName, PassWord FROM Adminstrator WHERE (UserName =@user and PassWord=@pass)"
        cmd.Connection.Open()
        No = cmd.ExecuteScalar()
        If (No = "") Then
            message.Text = "Error"
        Else
                        'Go to the next form
        End If
        cmd.Connection.Close()
    
    End Sub