Ticket T669778

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Hide ListView in MasterDetailMode ListViewAndDetailView (Win XAF application)

FDE

created 7 years ago (modified 7 years ago)

Dear Support members,

I have Win XAF application, with an XPO data model that implements programmatically data versioning through table relationships.
As a consequence, I use ListViews with MasterDetailMode set to "ListViewAndDetailView", with list views showing the versioning records (basically date and user) and the corresponding object details in the DetailView.
All this works perfectly well.

But the point is end-users would like to hide the versioning history for normal use.

Ideally, I would love to have a docking panel where versioning (e.g. listview) can be hidden or displayed when necessary. But I couldn't achieve this, as it seems way too complex.

So I tried to hide the ListView through a controller (gridView.GridControl.Hide();), but then the detailView is empty.

Alternatively I tried to put the size (either width or height) to zero, or to change the height to display only one row, but it just doesn't work :

C#
System.Drawing.Size myMinSize = gridView.GridControl.MinimumSize;  
myMinSize.Height = 5;  
gridView.GridControl.Height = 5;

I spent a lot of time digging in the forum but I couldn't find suitable information.

Help would be much appreciated!
Thanks,
Philippe

Comments (1)

DevExpress Support Team 7 years ago

Hello Philippe,

We need additional time to answer your question. Please bear with us. We will get back to you as soon as possible.

Answers approved by DevExpress Support

DevExpress Support Team

created 7 years ago (modified 4 years ago)

Hello Philippe,

Your scenario looks very similar to opening DetailView from a master-detail ListView in a Tabbed MDI UI.

Alternatively, if you are not using Light Style, you can use the solution from the Switch between ListViewOnly and ListAndDetailView ticket and change the SplitPanelVisibility.Panel1 value by the SplitPanelVisibility.Panel2 value in the following line:

C#
((SplitContainer)View.LayoutManager.Container).PanelVisibility = cost.IsStock ? SplitPanelVisibility.Both : SplitPanelVisibility.Panel1;

Note that GridListEditor does not assign a data source to the grid if the grid is hidden. You can show and hide FixedPanel in the RefreshAction.Execute event handler to force a data source update.

Let me know if these solutions are suitable for you.

Thanks,
Marina

T669778.gif

Show previous comments (6)

FDE 7 years ago

Hi Marina,
thank you for your help. To be more explicit I attach screenshots with description of the behaviour I expect.
I am already in LightMode, and after trying to implement the solution to hide panel1 as per the ticket you mentioned, like this :

//…
if (View.Id == "DB_SOCIETE_SYNTHESEs_ListView")
{
// Hide history
if (((ListView)View).LayoutManager.Container is SplitContainer)
{
((SplitContainer)(((ListView)View).LayoutManager.Container)).PanelVisibility = DevExpress.XtraEditors.SplitPanelVisibility.Panel2;
}
}

it doesn't work, as the container is a SidePanel and not a SplitContainer (looking in debug mode)

Do you have a step-by-step descrition on how to make a listView panel of a ListViewandDetailView view dockable with XAF in v18.1.4?

Alternatively, do you have a trick to allow reducing the listView panel until it disappears ?

Thank you,
Philippe

ListViewAn...panel.docx

DevExpress Support Team 7 years ago

Thank you for your clarification, Philippe. You can hide this panel using the following code:

C#
private void View_CurrentObjectChanged(object sender, EventArgs e) {  
  if(View is CompositeView && ((CompositeView)View).LayoutManager != null) {  
    SidePanelContainer container = ((CompositeView)View).LayoutManager.Container as SidePanelContainer;  
    if(container != null) {  
     container.FixedPanel.Visible = false;  
    }  
  }  
}

Yet, I found that an empty space is left instead of the hidden panel. I've created a separate ticket to research this behavior: SidePanelContainer - FillPanel does not fill the container after FixedPanel is hidden. I suggest you add it to your Favorites to be automatically notified of our results.

FDE 7 years ago

Hi Gosha,

it works like a charm, thank you for your help!

At first try I discovered that I had the same problem (detailView empty), but looking a second time to your code I found out that I've overriden the wrong event (ViewControlCreated instead of CurrentObjectChanged)

I'm still interested in you find time to put together an explanation of making this side panel dockable, so it can show on / off when end-users need it (the dock animation with the panel sliding in the screen is cool) ; although I will certainly achieve this with a simple action to toggle off / on the FixedPanel.Visible value.

Thank you again for your time and effort!
Best regards,
Philippe

DevExpress Support Team 7 years ago

Hi Philippe,

SidePanel can't be really dockable. It's also impossible to add animation when showing/hiding a panel. It's only possible to hide a panel by an action.

FDE 7 years ago

One last issue on the solution you proposed, after further testing : when reloading the screen once open, the detailView is empty.
Any idea on how I can "hook" to the Reload event and make the DetailView select the last Listview item?

DevExpress Support Team 6 years ago

Hello Philippe,

I have added the Controller from the attachment to the Main Demo and a Detail View is shown filled. Would you please provide the source code of your Controller to determine the cause of the issue?

Thanks,
Marina

HideListVi...troller.cs ShowHideAction.mp4

FDE 6 years ago

Hi Marina,

thank you for your comment. Toggling the listview off and on is OK (in my code I always hide them off but I think I will add the SimpleAction as you did)

The point is once the panel is hidden : my business object logic clones the last object when a change is entered (from the detailview property editors) and object is saved, adding a new one with updates. This works fine as long as I don't hit the "Refresh" button, which then shows a DetailView with empty fields.

Is it a behaviour you can reproduce with your example?

FYI my current controller's code

C#
private void View_CurrentObjectChanged(object sender, EventArgs e)  
 {  
     if (View is CompositeView && View.LayoutManager != null)  
     {  
         SidePanelContainer container = View.LayoutManager.Container as SidePanelContainer;  
         if (container != null)  
         {  
             if (true)  
             {  
                 container.FixedPanel.Visible = false;  
                 container.FixedPanel.Width = container.FixedPanel.MinimumSize.Width;  
             }  
         }  
     }  
 }

DevExpress Support Team 6 years ago

Hi Phil,

We need additional time to research this issue. Please bear with us. We will get back to you as soon as possible.

DevExpress Support Team 6 years ago

Hello Philippe,

GridListEditor does not assign a Data Source to the Grid if the Grid is hidden. You can show and hide FixedPanel in the RefreshAction.Execute event handler to force Data Source update.

Thanks,
Marina

Created: September 4, 2018 8:30 AM

Modified: November 26, 2020 3:11 PM

Platform: App Frameworks (UI, API, ORM)

Product: XAF - Specify UI Platform

Build: 18.1.4

IDE: Microsoft Visual Studio 2017

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Hide ListView in MasterDetailMode ListViewAndDetailView (Win XAF application)

Answers approved by DevExpress Support

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