Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>You do not need to run forms in separate threads. You can just call <code>s.Show()</code> on multiple forms normally. They will not block each other.</p> <p>Of course, if you’re doing <em>something else</em>, like some sort of calculation or other task that takes a long while, then you should run <em>that</em> in a separate thread, but not the form.</p> <p>Here is a bit of code that will let you create a progress bar that shows progress for a long process. Notice that every time to access the form from inside the thread, you have to use <code>.Invoke()</code>, which actually schedules that invocation to run on the GUI thread when it’s ready.</p> <pre><code>public void StartLongProcess() { // Create and show the form with the progress bar var progressForm = new Subform(); progressForm.Show(); bool interrupt = false; // Run the calculation in a separate thread var thread = new Thread(() =&gt; { // Do some calculation, presumably in some sort of loop... while ( ... ) { // Every time you want to update the progress bar: progressForm.Invoke(new Action( () =&gt; { progressForm.ProgressBar.Value = ...; })); // If you’re ready to cancel the calculation: if (interrupt) break; } // The calculation is finished — close the progress form progressForm.Invoke(new Action(() =&gt; { progressForm.Close(); })); }); thread.Start(); // Allow the user to cancel the calculation with a Cancel button progressForm.CancelButton.Click += (s, e) =&gt; { interrupt = true; }; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POHow can a new Form be run on a different thread in C#?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USTimwi
    1. USTimwi
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. CO@ Timwi: Thanks for your answer. But I tried it already. My requirement is different actually. Say I open two subforms and a long process is running in the SubForm1, can I access the SubForm2 now ??
      singulars
      1. PO
      1. USSLp
    2. CO@ Timwi: Sorry I didnt see your update the first time. So this is what im trying to do exactly 'run that in a separate thread, but not the form' as u said, but im wondering how? sorry, im new to these and i have just started learning.
      singulars
      1. PO
      1. USSLp
    3. CO@user403489, the advisable thing to do is not to run the long process in SubForm1, but rather run that long process in a BackgroundWorker (or Thread, but BackgroundWorker makes GUI thread interaction easier to manage.) Otherwise you're making SubForm1 non-responsive, which leads to ugly drawing artifacts (no repainting) among other things.
      singulars
      1. PO
      1. USDan Bryant
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload