Question

I have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable.

I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:

Js part.

document.getElementById("Label1").innerText = nwLat;

then in the vb part

   Dim nwLat As Double
    nwLat = Label1.Text
    MsgBox(nwLat)

it does not work for me any ideas? the error that comes up is
Input string was not in a correct format.

Cheers!

Answer 1

Easiest way without any type of ajax would be to use a hidden field.

Markup:

<asp:HiddenField ID="nwLatHidden" runat="server" Value="" />

JS:

document.getElementById('nwLatHidden').value = '6.00'; // or of course the value from your function.

.NET during your postback routine:

Dim nwLat As Double
nwLat = nwLatHidden.Value