CODEWITHSUNDEEP
c#
august
august

Reputation: 43

I want to Add the value of two or more textboxes

So I want to make a program where I can plus the value in two or more text boxes together. You can see on the picture I want to plus spm1 and spm2 together, and make the value show under >points

Any help is appreciated! 

private void btnsum_Click(object sender, EventArgs e) {
    Convert.ToInt32(txtspm1.Text.ToString());
    Convert.ToInt32(txtspm2.Text.ToString());
    sum = txtspm2.Text+txtspm1.Text;
    lblsum.Text = sum.ToString();

Upvotes: 2

Views: 122

Answers (4)

Dragon
Dragon

Reputation: 1088

If you want to find the sum of all the numbers entered in textboxes then you can just give a common class name to all those textboxes and then

on textbox change event write this code in Jquery

var value=$('.txtClass').val();
$('#total').text(value);

Just saw your updated question although usually jquery is used for the given scenario but since you need it on server side so you can simply do this

    int val1= Convert.ToInt32(txtspm1.Text); 
    int val2= Convert.ToInt32(txtspm2.Text);
    lblsum.Text = (val1+val2).ToString();

Upvotes: 2

sschimmel
sschimmel

Reputation: 196

sum = txtspm2.Text+txtspm1.Text

.Text returns a string value, so this is concatenating two strings, not adding two integers. Convert the values to integers, then add them.

Upvotes: 4

bto.rdz
bto.rdz

Reputation: 6720

From

private void btnsum_Click(object sender, EventArgs e) { Convert.ToInt32(txtspm1.Text.ToString()); Convert.ToInt32(txtspm2.Text.ToString()); sum = txtspm2.Text+txtspm1.Text; lblsum.Text = sum.ToString(); i tried this but this just added the nubers like if i put the numbers 2 and 4 then hit the button i just got 42

Your problem is that + operator behaves different from string and integers, in your case. try this instead

var n1= Convert.ToInt32(txtspm1.Text); 
var n2= Convert.ToInt32(txtspm2.Text;
sum =n1+n2; 
lblsum.Text = sum.ToString();

+ in string concatenates thats why you get that result

Upvotes: 2

Maria
Maria

Reputation: 364

   private void btnsum_Click(object sender, EventArgs e) 
   {
    var n1= Convert.ToInt32(txtspm1.Text); 
    var n2= Convert.ToInt32(txtspm2.Text);
    lblsum.Text = (n1+n2).ToString(); 
   }

Upvotes: 1

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