?
Solved

Given the following diagram if one of the controls change enable save button.

Posted on 2008-06-13
5
Medium Priority
?
182 Views
Last Modified: 2013-12-17
How can I enable save button if one of the controls changes. See attached file.

enablesavebutton.jpg
0
Comment
Question by:mathieu_cupryk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 11

Accepted Solution

by:
Babycorn-Starfish earned 2000 total points
ID: 21784675
Hi, this is pretty crude, but works. If it works for you i can tidy it up to make it less dependent on hard coded variables.

Basically for each control that can change you assign it the same event handler, in the event handler you check that the sender of the event has Focus. We check it has focus to stop us processing the event twice for the radio buttons as when we click on a different radio button the checked state changes in the current selection in addition to the newly selected one, not really a problem given that you are enabling a save button.

Anyway, hope this helps
public partial class Form1 : Form
    {
        private bool onLoad = true;
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            radioButton1.CheckedChanged += new EventHandler(CheckedChanged);
            radioButton2.CheckedChanged += new EventHandler(CheckedChanged);
            radioButton3.CheckedChanged += new EventHandler(CheckedChanged);
 
            checkBox1.CheckedChanged += new EventHandler(CheckedChanged);
            checkBox2.CheckedChanged += new EventHandler(CheckedChanged);
            checkBox3.CheckedChanged += new EventHandler(CheckedChanged); 
        }
 
        protected override void OnActivated(EventArgs e)
        {
            onLoad = false;
        }
 
        void CheckedChanged(object sender, EventArgs e)
        {
            if (!onLoad)
            {
                Control c = (Control)sender; 
                if(c.Focused)
                {
                    MessageBox.Show("Changed");
                }
            }  
        }
    }

Open in new window

0
 

Author Comment

by:mathieu_cupryk
ID: 21786159
I got something like this:
 private bool onLoad = true;

        public Form1()
        {
            InitializeComponent();
            BuildStatBar();
            EnableSaveButton();
        }

        private void EnableSaveButton()
        {
            rbtnInitialPriceOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnAdjustmentPriceOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnInterimPaymentOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnFinalPaymentOption.CheckedChanged += new EventHandler(CheckedChanged);

            chkboxBarley.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxDesBarley.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxDurum.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxWheat.CheckedChanged += new EventHandler(CheckedChanged);
     
        }

        protected override void OnActivated(EventArgs e)
        {
            onLoad = false;
        }

        private void CheckedChanged(object sender, EventArgs e)
        {
            if (!onLoad)
            {
                Control c = (Control)sender;
                if (c.Focused)
                {
                    MessageBox.Show("Changed");
                }
            }
        }

I have not tested it yet but we need to check if the person the txtListName has changed?

0
 

Author Comment

by:mathieu_cupryk
ID: 21786166
private void Form1_Load(object sender, EventArgs e)
        {
            sbPnlMsg.Text = "";
            LoadInitialPriceReporting();
            BuildStatBar();
            HideTabs();
            EnableSaveButton();
        }

        private void EnableSaveButton()
        {
            rbtnInitialPriceOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnAdjustmentPriceOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnInterimPaymentOption.CheckedChanged += new EventHandler(CheckedChanged);
            rbtnFinalPaymentOption.CheckedChanged += new EventHandler(CheckedChanged);

            chkboxBarley.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxDesBarley.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxDurum.CheckedChanged += new EventHandler(CheckedChanged);
            chkboxWheat.CheckedChanged += new EventHandler(CheckedChanged);
     
        }
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 21786321
Hi,

for the textbox you use the textchanged event:

textBox1.TextChanged += new EventHandler(CheckedChanged);

0
 

Author Comment

by:mathieu_cupryk
ID: 21786420
cool.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Suggested Courses

764 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