key_press with text_changed

Question

0.00/5 (No votes)

See more:

hello
here is the problem

i have a textbox and i want to use key_press event for it only when i press "Enter" key..
but i want to use text_changed event also. problem is that text_changed fire itself before key_press
i mean it takes "Enter " as a text_changed not as a key_press.
how can i resolve this problem

C#

 private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {

            if (e.KeyChar == (char)Keys.Enter)
            {
                e.KeyChar = (char)Keys.Tab;
                SendKeys.Send(e.KeyChar.ToString());
            }
        }

 private void textBox1_TextChanged(object sender, EventArgs e)
        {
            AutoCompleteStringCollection srsa = new AutoCompleteStringCollection();
            foreach (DataRow drsa in ob.dsss2("select accountn from partymaster", "dss").Tables[0].Rows)
            {
                srsa.Add(drsa[0].ToString());
            }
            textBox1.AutoCompleteCustomSource = srsa;
}

i want to move the cursor to next control when hit "Enter" but its not moving while if i dont use text_changed then it works fine.

Posted 30-Aug-12 22:17pm

choudhary.sumit

Updated 30-Aug-12 22:51pm

v4

Add a Solution

Comments

[no name] 31-Aug-12 4:21am

Post your code first for both
Keypress and TextChanged events

Kenneth Haugland 31-Aug-12 4:44am

I assume that this applies to WinForms or?

choudhary.sumit 31-Aug-12 4:46am

yes i m working on winforms

Sunny_Kumar_ 31-Aug-12 4:46am

Elaborate on what you wanna do. Do you want some code to get executed when Enter key is pressed or else?

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sarrrva · Answer 1 · 2012-08-30T23:11:00

hi friend this example enough for you!!!

C#

private void textBox1_TextChanged(object sender, EventArgs e)
        {
            MessageBox.Show("hello");
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                textBox1_TextChanged(this.textBox1, EventArgs.Empty);
            }            
            else
            {
                this.textBox1.TextChanged -= new EventHandler(textBox1_TextChanged);            
            }
        }

regards
sarva

Sourav Sarkar-SS · Answer 2 · 2012-08-30T23:29:00

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {

            if (e.KeyChar == 13)
            {
               
                SendKeys.Send("{TAB}");// or textBox2.Focus();
            }
        }

 private void textBox1_TextChanged(object sender, EventArgs e)
        {
            AutoCompleteStringCollection srsa = new AutoCompleteStringCollection();
            foreach (DataRow drsa in ob.dsss2("select accountn from partymaster", "dss").Tables[0].Rows)
            {
                srsa.Add(drsa[0].ToString());
            }
            textBox1.AutoCompleteCustomSource = srsa;
}

BillWoodruff · Answer 3 · 2012-08-31T00:41:00

I wonder why you are implementing such an unusual keypress behavior:

Windows users are socialized to, conditioned to, expect certain regular actions in terms of navigation within windows (WinForm windows), and inside standard controls in response to key-events ... with some variations.

Normally, the tab key, or arrow keys (or even page up/down and home/end) should be used for navigation.

The tab key is specially reserved for moving focus within a WinForm from control to control based on TabIndex level, and whether or not the 'TabStop property of a control is set to 'true, or 'false; and, likewise in dialogs, or input forms, etc.

But, even that behavior can vary: for example: within a TextBox, the 'AcceptsTab and 'AcceptsEnter properties affect what happens in response to those keys, while the default behavior, or course, is to insert a cr/lf (linefeed), and move the insertion cursor to the start of the next line (in a MultiLine TextBox, of course).

If you open a WinForms property browser at design-time, and set the 'AcceptButton to a button selected from the drop-down list of all Buttons: that means that the 'enter key will trigger a button-click on that selected button: but only if it has focus.

And last, but not least, you set a WinForm's 'KeyPreview property to 'true: you can handle key-events first at the Form level. But, even that gets "tricky:" if you a bunch of Buttons and one TextBox on a Form, even if you set the focus to one of the Buttons and hit a key: the object that triggers the Form KeyDown event will be the TextBox, even though it does not have focus.

If you really want advice about using the tab key in an unusual way, then I think you need to describe exactly:

1. in what type of control you wish to use it: WinForm standard, 3rd. party, custom UserControl ?

2. why you wish to use it in this way: what's the real benefit to the end-user, or how does it add value to the control you using this over-ridden key behavior in ?

best, Bill

choudhary.sumit · Answer 4 · 2012-08-30T23:48:00

Solution 3

Finally...

key_press does not work with textboxes with autocompelet on.
i used here key_down and it works as i wanted..

thanks to all

Posted 30-Aug-12 23:48pm

choudhary.sumit

key_press with text_changed

4 solutions

Solution 1

Solution 2

Solution 4

Solution 3

Add your solution here

Preview 0