Clear StringGrid

[codeb]

Hi!

 

I try to fast clean UniStringGrid with first fixed row, but with out success... Any advice ...

[ZigZig]

Hi,

 

uniStringGrid is not the most optimized component of uniGUI...

Anyway, you can try this :

• set uniStringGrid.Visible to false before clearing it (or before adding lines), and set it to True after your process
• try to set the property "DoubleBuffered" to True before clearing it (or adding lines)
• try to use methods "BeginUpdate" and "EndUpdate" when you change something in your StringGrid.

You should notice better performances (but not so good; uniStringGrid is still a crappy component).

 

You can also try to use uniDBGrid instead of uniStringGrid... performances are better in some cases.

[Sherzod]

Hi codeb. 

 

If you need complete cleaning UniStringGrid, think can use store.reload (); 

 

for example:

 

Try

uses ... uniGUIApplication ... ;

UniSession.AddJS(UniStringGrid1.JSName + '.store.reload();');

Best regards

[ZigZig]

Hi codeb,

 

I think I found a nice solution :

 

BEFORE clearing your uniStringGrid, put this line in your code :

  UniSession.JSCode(myUniStringGrid.JSName+'.store.suspendEvents();');

AFTER clearing your uniStringGrid, put the lines:

  UniSession.JSCode(myUniStringGrid.JSName+'.store.resumeEvents();');
  UniSession.JSCode(myUniStringGrid.JSName+'.view.refresh();');

 

By the way, if some of your operations are too slow (ie creating components in runtime), you can do this :

 

BEFORE your slow operation

UniSession.JSCode('Ext.suspendLayouts();');

AFTER your slow operation

UniSession.JSCode('Ext.resumeLayouts(true);');

Everything is fully explained here : http://edspencer.net/2013/07/19/sencha-con-2013-ext-js-performance-tips/

 

 

 

Hope it'll help you.