Key control events in winforms

Question

1.00/5 (3 votes)

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I press a button in GUI.Button displays a message after I press it. But the keydown event does not work properly. Instead, it takes both "spacebar" and "Enter" keys along with the set keys in WinForms

What I have tried:

//As mentioned

this.KeyPreview = true;

//

this.KeyDown += new KeyEventHandler(Form1_KeyDown);

//IN KEYDOWN

if (e.KeyCode == Keys.H)
         {
             button1.PerformClick();
         }

Posted 16-Mar-17 0:53am

aurj

Updated 16-Mar-17 1:33am

v7

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Comments

OriginalGriff 16-Mar-17 7:00am

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind. So try to explain exactly what you tried, which keypress and keydown events you mean, and what happens that you didn't expect.
The better info you give us, the better response we can give you.
Use the "Improve question" widget to edit your question and provide better information.

Graeme_Grant 16-Mar-17 7:02am

Please update the question with clear and concise details by clicking on Improve question to add more info to the question.

[no name] 16-Mar-17 7:03am

"why my keypress ", because you did something wrong. What that is we can't tell you as we cannot read your mind or magically view your computer monitor.

Graeme_Grant 16-Mar-17 7:22am

Where is the keypress being fired from? too hard to tell. How is it not working properly??

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OriginalGriff · Answer 1 · 2017-03-16T01:33:00

If I insert that code into a test app:

C#

public frmMain()
    {
    InitializeComponent();
    this.KeyPreview = true;
    this.KeyDown += new KeyEventHandler(frmMain_KeyDown);
    }

C#

private void frmMain_KeyDown(object sender, KeyEventArgs e)
    {
    if (e.KeyCode == Keys.H)
        {
        myButton.PerformClick();
        }
    }

C#

private void MyButton_Click(object sender, EventArgs e)
    {
    Console.WriteLine("Done");
    }

Then every time I press "H" on the keyboard while the form has the focus, it prints "Done" in the output pane - which is what I expect.
So what are you doing that is different to me, given that I copy'n'pasted your code...