Forum > IWDBGrid - (RefreshAsyncRender, DoRefreshControl)

03-26-2023, 07:35 PM:

Good afternoon, working with an example template, I try to asynchronously refresh an IWDBGrid control to see the changes of a DataSet. I have used the RefreshAsyncRender method and the IWDBGrid1.DoRefreshControl := True; property. I can see the changes to the DataSet but the control scrolls below all other controls. Even if I don't have any DataSet connected to the IWDBGrid the control changes position.

Initially:

{%IWBUTTON1%}

{%IWBUTTON2%}

{%IWDBGRID1%}

{%IWBUTTON3%}

{%IWBUTTON4%}

After applying the mentioned method and property:

{%IWBUTTON1%}

{%IWBUTTON2%}

{%IWBUTTON3%}

{%IWBUTTON4%}

{%IWDBGRID1%}

I attach an example project. If this is an IntraWeb failure, which of the two ways should I use to correctly refresh the IWDBGrid asynchronously? Thanks

04-10-2023, 04:44 AM:

If you are forcing a component to re-render in Async, like an IWGrid, please use the OnFindParentId event of the IWTemplateProcessorHTML component.

This is an example code of how it should be:

Code:

procedure TIWForm1.IWTemplateProcessorHTML1FindParentId(

Sender: TIWTemplateProcessorHTML; AContainerContext: TIWContainerContext;

const AComponent: TComponent; out AParentId: string);

begin

if AComponent = MyIWGrid then

begin

AParentId := 'some_div';

end;

In this event you specify where the IWGrid should be inserted, i.e. what is the HTML element that should be the grid's immediate parent. You just need to provide a DOM Id of the HTML element (it doesn't even need to exist in your IntraWeb form)

Please let me know if ti works