dropdown list problem

Question

hello,

my problem is that:-

i'v 3 dropdown lists and by default 1st one will display and other are hide.

when we select any value from 1 then it should be display other two.

for ex:-

ddl1  if we select values between 1-2 it should be display other dropdown but if values are <2 then other should display.

1

2

3

4

5

so how can i achieve this.

i gave  following code but not working:-

protected void DropDownList5_SelectedIndexChanged(object sender, EventArgs e)

    {

        int adlt = Convert.ToInt32(DropDownList5.SelectedValue);

        if (adlt <= 2)

        {

            Label10.Visible = false;

            Label11.Visible = false;

            DropDownList7.Visible = false;

            DropDownList8.Visible = false;

        }

        else

        {

            Label10.Visible = true;

            Label11.Visible = true;

            DropDownList7.Visible = true;

            DropDownList8.Visible = true;

        }

}

please help me.