[RESOLVED] QueryString Question

Does this look ok to use? I'm trying to make sure there is nothing in the hidden field and txt boxes prior to making the request fro the querystrings.

I have this in my page load event

        If Not Page.IsPostBack Then
            'clear all fields here then set them below, just to be sure they start out blank.
            hfClient_ID.Value = DBNull.Value.ToString
            hfAccount_ID.Value = DBNull.Value.ToString
            hfEmail.Value = DBNull.Value.ToString
            hfEmail.Value = DBNull.Value.ToString
            txtFirstName.Text = ""
            txtLastName.Text = ""
            'load fields for the Client
            hfClient_ID.Value = Request.QueryString("Client_ID")
            hfAccount_ID.Value = Request.QueryString("Account_ID")
            hfEmail.Value = Request.QueryString("Email")
            txtEmail.Text = hfEmail.Value
            txtFirstName.Text = Request.QueryString("FirstName")
            txtLastName.Text = Request.QueryString("LastName")

On initial load of the page the controls will be empty, no? What I'm saying, there's no need for the clear part. 

You don't need to check it at first load, it's already blank

Below is a sample hiddenfield that already has a value at first load

You only need to check the query string to avoid error

If Request.QueryString("Client_ID") IsNot Nothing Then

    hfClient_ID.Value = Request.QueryString("Client_ID")

End If