Using the OnTextChanged TextBox event isn't working

Question

I have a repeater that places 600+ textboxes filled with data on my page. A typical user will edit several of these.

I would like the OnTextChanged event to run when I hit a save button, but it's not working.

All of my textboxes have the property OnTextChanged="TextBoxChanged" When my user selects the save button

<asp:Button ID="SaveChangesBtn" CssClass="SaveAndNextBtn" runat="server" 
            Text="Save Changes" onclick="SaveChangesBtnClick" />

I would like the TextBoxChanged event to run for each textbox that has been changed. How can I implement this?

Is the TextChanged event raised only once after you've clicked the button? — Tim Schmelter
– Tim Schmelter, Commented Sep 12, 2012 at 21:36
I have no textchanged anywhere. I just have the TextBoxChanged function that is never called — proseidon
– proseidon, Commented Sep 12, 2012 at 21:39
Do you rebind the repeater on every postback or have you wrapped the databinding stuff (as you should) in a !IsPostback-check? — Tim Schmelter
– Tim Schmelter, Commented Sep 12, 2012 at 21:41
That actually did the trick. I didn't know about that. Thanks! Please make your comment an answer so I can select it — proseidon
– proseidon, Commented Sep 12, 2012 at 21:45

Tim Schmelter · Accepted Answer · 2012-09-12 21:46:35Z

4

Do you rebind the repeater on every postback or have you wrapped the databinding stuff (as you should) in a !IsPostback-check?

if(!IsPostBack)
    DataBindRepeater();

If you databind web-databound controls on postbacks, all changes are lost and events won't be triggered.

answered Sep 12, 2012 at 21:46

Tim Schmelter

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Frank Thomas · Accepted Answer · 2012-09-12 21:41:37Z

0

I'm afraid OnTextChanged isn't quite what you are looking for then. OnTextChanged fires after a control has been entered, changed and then left (lost focus), so it fires when you select the next object.

you could use the OnTextChanged to accumulate a list of the IDs of the textboxes with changed contents, and then when you save, just loop over all the changed boxes to perform whatever task you like.

answered Sep 12, 2012 at 21:41

Frank Thomas

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3 Comments

Tim Schmelter Over a year ago

Only true with AutoPostBack (not default). Otherwise the OnTextChanged event handler would be called on the next postback(.f.e on button click).

proseidon Over a year ago

It actually seems to be only calling the TextBoxes on the save button now. I'm not sure why it isn't calling it out of focus, but I'm not complaining because this is the way I want it.

Tim Schmelter Over a year ago

@proseidon: That's what i've commented above, only if you set AutoPostBack="True" it will post back immediately as soon as the user has changed the Text and the focus is lost(javascript blur event). But the serverside TextChanged event is triggered anyway later on the next roundtrip to server.

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