How to clear a TWebDbGrid when blank json [] response returned from web server.

WEB WEB Feature Requests
1

Hi Team,

I am facing one issue related to TWebDBGrid.
I am fetching some data from a webserver which returns blank json response i.e . And when the blank json response is got then it is not clearing the web dbgrid.
I am using TWebClientConenction to call an get API endpoint. I am using a TWebCLientDataset to store the returned JSON data and the client dataset is linked to webcliwntconnection. When I activate the webclientconnection then it returns json. So it is not activating the webclientdataset. Sp, the linked webdbgrid still shows the blank 4 rows so how to clear or blank the webdbgrid if blank json data returned.

Following are linked components.

image

Following is the grid linked to dsFlutes

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But when I activate the wccFlute it returns then the cds does not activate and the grid shows blank rows.

flutes endpoint returns blank json

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So, how to clear the grid if blank json returns.

2

Is the server in this case returning a status 200? Is the TWebClientDataset itself effectively empty? What if you activate this dataset programmatically?

3

Yes, The server is returning 200 with blank json . We are not returning any json data from server as no data found in db table.
So, in this case, as I checked the TWebClientDataset remains inactive but the grid still shows 4 blank rows.
I tried with activate the TWebClientDataset but still same issue

4

I retested this here with the demo Demo\Basics\DBGrid adding a button with the code:

webclientconnection1.URI := 'https://download.tmssoftware.com/tmsweb/demos/TMSWEB_ResponsiveGrid/carsempty.json';

and this empties the grid