SendKeys.Send make my system hangs

Question

0.00/5 (No votes)

See more:

i developed adatetimepicker custom control
my date format is yyyy/MM/dd
i want to typed 4 digit of year yyyy then courser go to month section and so on
so in CustomDateTimePicker_ValueChanged event i wrote this code

C#

private void CustomDateTimePicker_ValueChanged(object sender, EventArgs e)
    {


          SendKeys.Send("{RIGHT}");

     }

but when debug reach to SendKeys my system hangs
~~plz~~ Please really I need help?

Posted 5-Jun-12 6:05am

nagiub2007

Updated 5-Jun-12 7:27am

Shahin Khorshidnia

v2

Add a Solution

Comments

Sergey Alexandrovich Kryukov 5-Jun-12 15:04pm

Is it Forms? Of something else? you need to tag it.
--SA

2 solutions

Solution 2

Please see my comment to the answer by OriginalGriff. Never use SendKeys for such things. You can use System.Windows.Forms.Control.SelectNextControl, or System.Windows.Forms.Control.GetNextControl in combination with System.Windows.Forms.Control.Focus. Please see:
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.aspx[^].

—SA

Posted 5-Jun-12 9:09am

Sergey Alexandrovich Kryukov

Comments

codeBegin 6-Jun-12 7:10am

my 5

Sergey Alexandrovich Kryukov 6-Jun-12 11:29am

Thank you,
--SA

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)

OriginalGriff · Accepted Answer · 2012-06-05T06:16:00

Solution 1

The chances are that because you are sending this from a ValueChanged event handler, the effect of the SendKeys is to send a RIGHT key to the current control - i.e. the CustomDateTimePicker, and that it is (for whatever reason) causing a ValueChanged Event. Which sends a RIGHT, which causes... you get the idea.

Why are you sending keys around? Normally, that is an example of a badly designed control - what are you trying to achieve that you think this is a good solution? Why not just use the Focus method to set the focus to the month?

Posted 5-Jun-12 6:16am

OriginalGriff

Comments

nagiub2007 5-Jun-12 12:34pm

Yes, I want to navigate or go to the next part when writing the day.
If I use Focus() method, I will achieve me goal. I want the CustomDateTimePicker works as the MaskedTextBox, when writing two digits in the Day's part the courser moved to the Month's part.

That I want to do !!

Sergey Alexandrovich Kryukov 5-Jun-12 15:09pm

Please see my answer -- I explain how to do it correctly.
--SA

Sergey Alexandrovich Kryukov 5-Jun-12 15:04pm

My 5, mostly for the idea of badly designed control. SendValues should not be used for the UI, and can rarely be used, if used at all.
--SA

codeBegin 6-Jun-12 7:10am

my 5