Why this work and that not wok

Question

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OutputTB is a textbox
OutputRTB is a rich textbox

these 2 boxes are overlaped
and I swap them by show/hide and SendToBack/BringToFront
for my needs.

in not work I mean that if I restore the form window from minimized state
then all form controls repositions and overlaped each other.
and the user must to restart the app.

and work mean the form is restored to its ok state.

the relevent code is:

1. not work

C#

if(!IsAppRunning)
{
  if(FlipNextAllCKB.Checked == true)
  {
    OutputTB.Hide();
    OutputTB.SendToBack();
    OutputRTB.Show();
    OutputRTB.BringToFront();
    FlipNextAllCKB.Checked = true;
  }

  if(FlipNextAllCKB.Checked == false)
  {
    OutputRTB.Hide();
    OutputRTB.SendToBack();
    OutputTB.Show();
    OutputTB.BringToFront();
    FlipNextAllCKB.Checked = false;
  }
}

or
2. is work

C#

if(!IsAppRunning)
{
  if(FlipNextAllCKB.Checked == true)
  {
    OutputTB.Hide();
    if(this.WindowState == FormWindowState.Minimized) OutputTB.SendToBack();
    OutputRTB.Show();
    if(this.WindowState == FormWindowState.Minimized) OutputRTB.BringToFront();
    FlipNextAllCKB.Checked = true;
  }

  if(FlipNextAllCKB.Checked == false)
  {
    OutputRTB.Hide();
    if(this.WindowState == FormWindowState.Minimized) OutputRTB.SendToBack();
    OutputTB.Show();
    if(this.WindowState == FormWindowState.Minimized) OutputTB.BringToFront();
    FlipNextAllCKB.Checked = false;
  }
}

Thank you

What I have tried:

OutputTB is a textbox
OutputRTB is a rich textbox

these 2 boxes are overlaped
and I swap them by show/hide and SendToBack/BringToFront
for my needs.

in not work I mean that if I restore the form window from minimized state
then all form controls repositions and overlaped each other.
and the user must to restart the app.

and work mean the form is restored to its ok state.

the relevent code is:

1. not work

C#

if(!IsAppRunning)
{
  if(FlipNextAllCKB.Checked == true)
  {
    OutputTB.Hide();
    OutputTB.SendToBack();
    OutputRTB.Show();
    OutputRTB.BringToFront();
    FlipNextAllCKB.Checked = true;
  }

  if(FlipNextAllCKB.Checked == false)
  {
    OutputRTB.Hide();
    OutputRTB.SendToBack();
    OutputTB.Show();
    OutputTB.BringToFront();
    FlipNextAllCKB.Checked = false;
  }
}

or
2. is work

C#

if(!IsAppRunning)
{
  if(FlipNextAllCKB.Checked == true)
  {
    OutputTB.Hide();
    if(this.WindowState == FormWindowState.Minimized) OutputTB.SendToBack();
    OutputRTB.Show();
    if(this.WindowState == FormWindowState.Minimized) OutputRTB.BringToFront();
    FlipNextAllCKB.Checked = true;
  }

  if(FlipNextAllCKB.Checked == false)
  {
    OutputRTB.Hide();
    if(this.WindowState == FormWindowState.Minimized) OutputRTB.SendToBack();
    OutputTB.Show();
    if(this.WindowState == FormWindowState.Minimized) OutputTB.BringToFront();
    FlipNextAllCKB.Checked = false;
  }
}

Posted 31-May-22 6:31am

Member 13569650

Updated 31-May-22 6:57am

PIEBALDconsult

v2

Add a Solution

Comments

0x01AA 31-May-22 12:36pm

Have a look here: c# - How to set Z-order of a Control using WinForms - Stack Overflow[^]

Member 13569650 31-May-22 12:47pm

I was expecting an explanation why this behave like that.

and I also will check if this will for my code

Thank you very much

0x01AA 31-May-22 12:55pm

Hard to give you an explanation, because we do not know on which events the code you show will be triggered.

Basically set the property 'Visible' to either true or false should be enough. I really don't see a reason to use BringToFront/SendToBack. While writing... maybe this (BringToFront/SendToBack) is your problem because there is a chance it changes the visibility?

Member 13569650 31-May-22 15:05pm

In fact I use control.show and control.hide.

accidentally I played with back/front
and I curious about that behaviour

the triggered event is a button click

anyway thank you very much

Member 15627495 1-Jun-22 3:54am

I'm interested by the "why" ?
what are the expected goals with a kind of toggle between a textbox, and a rich textbox ??
keep just one of them : the rtb ( for rich contents ).

Member 13569650 1-Jun-22 9:13am

The goal is speed.
My App write a lot of text on the textbox and then I use a search on that text.
I think that a textbox is a good target for this.

And I also sometimes want to do a search with color marking the matches
and for that I use the rich textbox.

Thank you.

Daniele Rota Nodari 1-Aug-22 6:51am

Better don't use UI controls as data containers. Reading/Writing data (like TextBox.Text) involves copying, allocations, marshalling operations and other unwanted overhead (like cross-thread invocations).
Keep your text elsewhere (e.g.: local field or property) and use it for any data-aware operation (like searching).
Try also to cut down the times you set the Text property, by batching/merging updates and using optimized methods, like AppendText.
Obsviously such approach might require complex structures to link the raw data to the UI counterpart, so you have to evaluate a proper trade-off.
Anyway, you may end up without the need of a TextBox.

Member 15627495 1-Jun-22 9:47am

I code by VB, but do you define a parent for your controls ?
I ask that about the undraw when you make your main windows pop out from minimize to screen.

by the OutputRTB.parent = the_main_windows, you'll fix it inner the main windows.

Member 13569650 1-Jun-22 13:06pm

OutputRTB.parent its my app form (Form1) ok but

I do not understand what you mean in you'll fix it inner the main windows.

Thank you

[no name] 2-Jun-22 12:19pm

If you "hide" something, you shouldn't need to "send it to the back". And depending on what UI or layout you're using, "hiding" may also cause the control to "collapse"; which may change the layout; depending on "anchoring". Not enough info to tell what you're doing.

Daniele Rota Nodari 1-Aug-22 6:57am

What method does the "relevant code" come from?
Why are you hiding/showing child controls if the triggering event is a parent window restore (that should not affect children layout and visibility)?
Have IsAppRunning anything to do with the TextBox/RichTextBox swap logic or the minimize/restore events (maybe you wanted to check for IsHandleCreated and Disposing/IsDisposed properties)?

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