VB.NET TextBox formatting issue

I have formatted an some ADODB.Fields from SqlDB Feild object as follows:

            Dim dblInspectionFee As Double = 0
            Dim dblTaxFee As Double = 0
            Dim dblTaxValue As Double = 0
            Dim dblTotalFee As Double = 0

            dblInspectionFee = .Fields("P01_FEE").Value
            dblTaxFee = .Fields("P01_TAX").Value
            dblTaxValue = .Fields("P01_TAXRATE").Value
            dblTotalFee = .Fields("P01_TOTAL").Value

             Me.txt_InspectionFee.Text = dblInspectionFee.ToString("C")
            Me.txt_TaxFee.Text = dblTaxFee.ToString("C")
            Me.cbo_TaxValue.Text = dblTaxValue.ToString("P")
            Me.txt_TotalFee.Text = dblTotalFee.ToString("C")

My Problem is that after I do some other function (Press some button) I would like to retrieve the Values from the apropriate TextBox and perform some calculation on it.

For some reason I can not change the value of the TextBox using :

Dim dblTaxValue1 As Double = 0
dblTaxValue1 = Val(Format(Me.txt_InspectionFee.Text, "#0.00"))

Back to an string Representation without the currency symbol.  
dblTaxValue1 is not taking on the Me.txt_InspectionFee.Text value; it is remaining as 0 (initialized value)

Any ideas as to what I am doing wrong.  This would not be an issue in VB 6. the formatting in .Net seems to be working a whole lot differently.