Confusion in calculation of textbox value?

Question

Hi..

I have two textboxs in my application both works on numbers

One is NetTotal textbox which is already filled with 100 value..

An other is OtherCharge textbox which will filled on need..

Suppose I type any amount in OtherCharge textbox and that it is adding in NetTotal textbox as bellow

NetTotal.Text = (Convert.ToInt32(NetTotal.Text) + Convert.ToInt32(OtherCharge.Text)).ToString();

But problem is that if I replace any digit from otherCharge textbox through backspace ontextchanged event..

like I have typed 90 in OtherCharge Textbox than netTotal.text=190
but if i replace 0 than value should be 109 instead of 190 so how it is possible...

please help me..

Vulpes · Answer

I don't know what's triggering this calculation or where you're doing it but you need to reset the value of NetTotal.Text every time before a new calculation. If it will always be 100 then insert this line before you do the calculation: NetTotal.Text = 100; Alternatively change the calculation itself to: NetTotal.Text = (100 + Convert.ToInt32(OtherCharge.Text)).ToString();

Kanhialal kk · Answer

Sir I am working on Desktop application while Javascript is Browser supported... I think

Om prakash Singh · Answer

try to use javascript in place of code behind. Call onblur event and in this event add the values like document.getElementById(NetTotal).value = parse.Int(document.getElementById(NetTotal).value) + parse.Int(document.getElementById(OtherCharge).value);