Counting characters real time

Hi,

I am trying to come up with a code that can count the characters in a textbox in C#. Here is what I have now. But it does not seem to work. Also, according to what I found online, OnTextChanged only works when the cursor leaves the field. ??thanks

            <asp:TextBox id="Notes" maxlength="10"  OnTextChanged="textBox_KeyPress" runat="server"  Width="496px" rows="20" TextMode="MultiLine"></asp:TextBox>      
            <asp:Label id="NotesRemaining" runat="server"></asp:Label>  characters remaining	

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    protected void textBox_KeyPress(object sender, EventArgs e)
    {

        //var max = 100;
        //var countNow = Notes.Text.Length;
        NotesRemaining.Text = "aaaa";// (max - countNow) + " Characters remaining";
    }

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mcrmgAsked:
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Ryan ChongBusiness Systems Analyst , ex-Senior Application EngineerCommented:
OnTextChanged will be fired at server end.

to enable real time tracking in JavaScript event, you can look into keypress event, etc.
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mcrmgAuthor Commented:
thank you very much
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