DBGrid AjaxEvent: Adding Hide/Show Events

[andyhill]

procedure TMainForm.UniFormCreate(Sender: TObject);

...
  
  //////////////////////////////////////////////////////////////////////////////
  grdSuppliers.ClientEvents.ExtEvents.Clear;
  MyScript:= 'hide=function hide(sender, eOpts)'#10+
             '{ '#10+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Hiding_'', []); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);
  //
  MyScript:= 'show=function show(sender, eOpts)'#10+
             '{ '#10+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Showing_'', []); '+
             '} ';
  grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

...

 

// ONLY EVENTS FIRED data/load/columnresize
procedure grdSuppliersAjaxEvent(Sender: TComponent; EventName: string; Params: TUniStrings);

...

  //////////////////////////////////////////////////////////////////////////////
  if SameText('_Hiding_', EventName) then begin // NEVER FIRES 
 

  //////////////////////////////////////////////////////////////////////////////
  if SameText('_Showing_', EventName) then begin // NEVER FIRES
 

Please advise - Thanks in advance

[Sherzod]

Hello @andyhill, 

What do you want to achieve? show, hide, for what?

[andyhill]

I want to use these events to process some house cleaning processes

[andyhill]

Can we please make Grid Hide/Show events work.

MyScript:= 'show=function show(sender, eOpts)'#10+
           '{ '#10+
           '  ajaxRequest(MainForm.grdSuppliers, ''_Showing_'', []); '+
           '} ';
grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

[Sherzod]

On 12/31/2023 at 12:09 PM, Sherzod said:

show, hide, for what?

 

8 hours ago, andyhill said:

Can we please make Grid Hide/Show events work.

Now I understand that it was for the grid.

Do you show/hide during runtime?

[andyhill]

Grids are shown and hidden at runtime

[Sherzod]

6 hours ago, andyhill said:

Grids are shown and hidden at runtime

Maybe I don't understand your case very well. Although these events works at least in runtime...

[andyhill]

Sherzod, on Grids created at runtime (in FormCreate) my runtime assigned events do not fire ?

If Grids are added to the Form in the IDE and Events are set in the ClientEvents Editor they do fire.

FormCreate
grdSuppliers:= TUniDBGrid.Create(pnlInfo); (pnlInfo is a child of MainForm)

// Show
grdSuppliers.ClientEvents.ExtEvents.Clear;
MyScript:= 'show=function show(sender, eOpts)'#10+
             '{ '#10+
             '  ajaxRequest(MainForm.grdSuppliers, ''_Showing_'', []); '+ (tried different ways - NEVER FIRES)
             '  ajaxRequest(MainForm.pnlInfo.grdSuppliers, ''_Showing_'', []); '+ (tried different ways - NEVER FIRES)
             '  ajaxRequest(MainForm.window, ''_Showing_'', []); '+ (tried different ways - NEVER FIRES)
             '  ajaxRequest(MainForm, ''_Showing_'', []); '+ (tried different ways - NEVER FIRES)
             '} ';
grdSuppliers.ClientEvents.ExtEvents.Add(MyScript);

Please show me how to add 'Show' Event at runtime to a Grid created at runtime whose parent is pnlInfo - Thanks

[Sherzod]

7 hours ago, andyhill said:

on Grids created at runtime (in FormCreate) my runtime assigned events do not fire ?

Assign a name to the component.

[andyhill]

Yes Sherzod - that was embarrassing - thank you.

FYI 'show' works fine but 'hide' does not and that goes for IDE/EventEditor versions and RUNTIME/Create versions - 'show' works fine in both cases but 'hide' does not work in either.

Any ideas ?

[Sherzod]

Should work. Do you have a simple testcase to check!?