how we automatically add value in onter textbox

Question

1.67/5 (3 votes)

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Hello Sir ,
I have a two text box(TextBox1,TextBox2) i want the when we enter the values in two text box and move the cursor from TextBox2 then automatically values add and Enter the value in anoter TextBox such TextBox3;
Thanks

Arvind Kumar Singh

Posted 17-Apr-11 23:35pm

Arvind_singh

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Comments

Sergey Alexandrovich Kryukov 18-Apr-11 5:38am

Not clear (and too trivial whatever it is). Homework?
Put your code first and explain what's the problem is you need any help.
Only this way can work here, not the other way around.
--SA

7 solutions

Solution 1

Use Javascript.

Try this[^].

Posted 17-Apr-11 23:40pm

Toniyo Jackson

Solution 4

Use JavaScript to grab the value from TextBox1 during the onblur event of that control and pop that value into TextBox2.There are plenty of examples both here and on Google as to how to make that happen.

Posted 17-Apr-11 23:42pm

R. Giskard Reventlov

Solution 5

I'm not going to give you the exact code, but I will tell you what you need to be looking at. You are going to have to write your code in JavaScript, to handle the fact that the event you are looking at is actually the blur event.

Posted 17-Apr-11 23:45pm

Pete O'Hanlon

Solution 10

C#

<html>
<head>
<title>index.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">

<script type="text/javascript">
function getaddedvalue()
{

var a = parseInt(document.getElementById("Text1").value);
var b = parseInt(document.getElementById("Text2").value);
var c=a+b;
var d=document.getElementById("Text3")
d.value=c
}
</script>
</meta></meta></meta></head>
<body>


This is my HTML page.
Text1:<input type="text" name="Text1" id="Text1" placeholder="satyam" />
Text2:<input type="text" name="Text2" id="Text2" placeholder="reddy" />
Text3:<input type="text" id="Text3"  önclick="return getaddedvalue()" />


</body>
</html>

Posted 16-Jan-12 23:51pm

SatyamReddy K

Updated 17-Jan-12 0:02am

v2

Solution 7

take textbox3 as html textbox like

C++

<input id="Text1" type="text"  onclick="return getaddedvalue()"/>

Use textbox click event to call javascript function
In javascript call other twotextbox values and add it and display in your desired textbox like

C++

function getaddedvalue() { var a=document.getElementById("TextBox1");
var b=document.getElementById("TextBox2")
var c=a+b;
var d=document.getElementById("Text1")
d.value=c };

Posted 17-Apr-11 23:47pm

Ashishmau

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Pong D. Panda · Accepted Answer · 2011-04-17T23:42:00

Solution 3

Use jQuery and put this code

$('#id_of_textbox2').keyup(function(event){
  if(event.keyCode == 13){
    $('#id_of_textbox3').val($('#id_of_textbox1').val() + $('#id_of_textbox2').val());
  }
});

Good luck!

Posted 17-Apr-11 23:42pm

Pong D. Panda

Comments

Arvind_singh 18-Apr-11 5:47am

Thanks Sir

Tarun.K.S 18-Apr-11 5:59am

Well accept the answer if it helped you.

Rob Branaghan · Accepted Answer · 2011-04-17T23:40:00

You just need to use the LEAVE event

C#

private void textBox2_Leave(object sender, EventArgs e)
     {
         string no1 = textBox1.Text;
         string no2 = textBox2.Text;
         textBox3.Text = AdditAndReturnIt(no1, no2);
     }

The AdditAndReturnIt function is below

C#

public static double? ConvertToDouble(string p_dblToConvert)
     {
         try
         {
             return double.Parse(p_dblToConvert.Trim());
         }
         catch (Exception)
         {
             return null;
         }
     }
     private static string AdditAndReturnIt(string p_no1, string p_no2)
     {
         double? no1conv = ConvertToDouble(p_no1);
         double? no2conv = ConvertToDouble(p_no2);
         if ((no1conv != null) & (no2conv != null))
         {
             return (no1conv + no2conv).ToString();
         }
         return "";
     }