Solved

C# Determine when F3 key is pressed

Posted on 2007-04-11
12
1,336 Views
Last Modified: 2008-02-01
Hi guys 'n gals,

I need to determine when a user presses the F3 key, how would I do that? Would I need to add it to the Form KeyPress event?


Cheers!
0
Comment
Question by:Cyber-Drugs
[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
  • 6
  • 4
  • 2
12 Comments
 
LVL 11

Accepted Solution

by:
Babycorn-Starfish earned 300 total points
ID: 18893369
hi,

try this in the KeyDown event

if (e.KeyCode == Keys.F3)
0
 
LVL 4

Author Comment

by:Cyber-Drugs
ID: 18893415
Hi,

Just tried this:

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.F3)
            {
                MessageBox.Show("F3 pressed");
            }
        }


and it doesn't work...
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 18893456
hmmm...

is your form focussed when you press the key?
0
MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

 
LVL 4

Author Comment

by:Cyber-Drugs
ID: 18893546
Is it, I even clicked onto the Form multiple times to make sure.
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 18893620
thats odd.

recreatred my project just to make sure i didn't do anything i hadn't mentioned but i just add the event handler via the properties tab on for the form and put in the code above.

Is the event hooked up? Look in the Form.Designer.cs file in the solution explorer, mine is as follows

/// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.SuspendLayout();
            //
            // Form1
            //
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Name = "Form1";
            this.Text = "Form1";
            this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown); //<-----this line here
            this.ResumeLayout(false);
        }

if you have this, set a break point in the event handler and see whether you actually enter that method at all.

0
 
LVL 4

Author Comment

by:Cyber-Drugs
ID: 18894119
Just tried this, and it didn't even detect that...

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.F3)
            {
                MessageBox.Show("F3 pressed");
            }
            else
            {
                MessageBox.Show(e.KeyCode.ToString());
            }
        }


This one has confused me, any ideas of what else I could try?
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 18894147
Hi,

Are you handling any other events? or do you still have any code in there from your earlier attempts?
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 18894154
also...

if you try creating a new project with aform and add the event handler in this new project and run it.. does that work - just trying to eliminate other causes :)

0
 
LVL 16

Assisted Solution

by:AlexNek
AlexNek earned 200 total points
ID: 18894169
Don't forget to set KeyPreview property for the form to true; When you have form with the controls then focus /and keyboard events/ come to the active control.
0
 
LVL 11

Expert Comment

by:Babycorn-Starfish
ID: 18894193
always something simple !
0
 
LVL 16

Expert Comment

by:AlexNek
ID: 18894291
No, only somitimes :)
0
 
LVL 4

Author Comment

by:Cyber-Drugs
ID: 18896153
That seems ot have done the trick, cheers!
0

Featured Post

Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

Question has a verified solution.

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

Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
Suggested Courses

617 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