Quick intro, My name is Jason and recently a work colleague retired and had developed several ASPX websites of which I have been tasked to support.
My previous background of programming is around Delphi, Intersystems Cache and more recently C# but these websites that I'm now supporting are all written in VB.net, asp.net, aspx or whatever language it is called, as you have probably guessed by now I have never used Visual Studio or produced code that created aspx files.
Anyway as a newbie to this language I have run into a problem that you experts will have learnt in school
I have a webpage (student.aspx) that contains this snippet of code :
<asp:DropDownList runat="server" ID="ddlCourse" DataTextField="Course"
I have added the "onChange" bit
and this bit of code is also existing
<asp:CheckBox ID="chkNerveCentre" runat="server" Text="Nerve Centre" TextAlign="Left" />
So basically the page contains several combo boxes and several check boxes
I need to do some logic for 2 of them, code above.
If the combo box contains text (from database) with the word Nursing, Nurse, Nurses etc. lets say "*Nurs* then teh tick box needs to be disabled so it cannot be ticked
This is the code I have done in the code behind file student.aspx.vb, it just contains a comment now
Function CheckNerveCenter() As Object
'If ID="ddlCourse" contains any word like "*Nurs*" then
'uncheck ID="chkNerveCentre" and then disable ID="chkNerveCentre"
At first I tried to get it to display a message to show that it was calling the function from the "onChange" but it doesn't seem to work.
As I'm new to this language would you please just help a newbie in the right direction
I did try and use the OnChangeText in visual studio but it just kept showing me this error
"Property Value not valid","Error HRESULT E_FAIL has been returned from a call to a COM component." I have no idea what this means
That's why I decided to try and use a function of my own but now stuck
Any ideas please?
modified 7-Jul-22 7:31am.