Solved

take away digits..

Posted on 2014-04-15
9
212 Views
Last Modified: 2014-04-15
hello,
I have inside a textbox a number "10"

I have two string one with "16523"
and another one with "1188"

based on the textbox how can I take away 10 from the first string to display "16513"
and take away 10 from second string displaying like this "1187.9"

maybe with String.Format ?
0
Comment
Question by:XK8ER
  • 3
  • 2
  • 2
  • +1
9 Comments
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 40002977
e.g.

int x, y, z;

x = Convert.ToInt32(textBox1.Text);
y = Convert.ToInt32(textBox2.Text);
z = Convert.ToInt32(textBox3.Text);

x -= z;
y -= z;

textBox1.Text = x.ToString();
textBox2.Text = y.ToString();

Open in new window

0
 
LVL 23

Expert Comment

by:Michael74
ID: 40002984
If it possible that either string is not a number then do not forget error handling when converting. Look at using TryParse

for example

int  x
bool result = Int32.TryParse(textBox1.Text, out x)
if (!result) {
   // do something to handle error
}

Open in new window


For more info look at
http://msdn.microsoft.com/en-us/library/f02979c7(v=vs.110).aspx

Michael
0
 
LVL 80

Accepted Solution

by:
David Johnson, CD, MVP earned 500 total points
ID: 40003116
using System;
using System.Linq;
using System.Windows.Forms;
namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
        double x, y, z;
        x = Convert.ToDouble(textBox1.Text);
        y = Convert.ToDouble(textBox2.Text);
        z = Convert.ToDouble(textBox3.Text);
        x -= z;
        y -= (z / 100);
        textBox1.Text = x.ToString();
        textBox2.Text = y.ToString();
        }
    }
} 

Open in new window

After Pressing Calculate
0
How Do You Stack Up Against Your Peers?

With today’s modern enterprise so dependent on digital infrastructures, the impact of major incidents has increased dramatically. Grab the report now to gain insight into how your organization ranks against your peers and learn best-in-class strategies to resolve incidents.

 
LVL 1

Author Closing Comment

by:XK8ER
ID: 40003120
thanks a lot!
0
 
LVL 80

Expert Comment

by:David Johnson, CD, MVP
ID: 40003133
using the onchange event
using System;
using System.Linq;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

   
        private void textBox3_TextChanged(object sender, EventArgs e)
        {
            double x, y, z;
            x = Convert.ToDouble(textBox1.Text);
            y = Convert.ToDouble(textBox2.Text);
            z = Convert.ToDouble(textBox3.Text);
            x -= z;
            y -= (z / 100);
            textBox1.Text = x.ToString();
            textBox2.Text = y.ToString();
        }
    }
}

Open in new window

https://drive.google.com/file/d/0B542q8KsuQuEVjdpdHEzaF9fQ1E/edit?usp=sharing
0
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 40003161
Interesting answer selection considering it's effectively a clone of my answer...
0
 
LVL 1

Author Comment

by:XK8ER
ID: 40003173
(z / 100);

is what I was looking for..
0
 
LVL 23

Expert Comment

by:Michael74
ID: 40003183
XK8ER do not forget that if a non-numeric entry is made in the textbox then the code will throw an error
0
 
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 40003207
Well, since you wrote:

and take away 10 from second string displaying like this "1187.9"

...instead of:

and take away .10 from second string displaying like this "1187.9"

...I'm sure you can appreciate why it was unclear what you wanted. Oh well.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

830 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question