Label Value not Refreshing Currently

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Posted on by MH3

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Hi,

I have a Bar Code Scanner Application, in which user scans a code and it's patched into the List.

and it shows the Scanned Codes in the Data Table and the Count of Codes Scanned in a Label

The issue is when two different users opens the same app and scans the codes simultaneously, the Label Value is not refresh at the same time, if the any of the user scans a code, although I am using Refresh(DataSource) after the Patch (onScan).

Actually, the changes are not reflected at that moment, user have to restart the application. is there any help for solving this issue?

For Label:

CountRows(MyBarCodeList) //Showing some delegation error any fix for this?

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Building Power Apps

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Vijay Tailor 2,961 on at

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Hi @MH3 ,

Hope the below approach helps you to resolve your issue.

You can eliminate the Delegation Error Like Below (Workarrounf as per my understanding).
ClearCollect(CountBarCodeRows,MyBarCodeList); CountRows(CountBarCodeRows);
Another thing is you can Add the Navigation the same Screen like Navigate(ScreenName, None);
and set the Code for refresh data and other operations in Screen OnVisible Properties.
even you can set the variable after the patch for evaluating the condition.

Thanks,
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MH3 1,059 on at

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Hi @VijayTailor ,

Thanks for the Fast Reply,
Do, I have to enter this code in App onStart? and if the two users simultaneously, scans do the collection updates at that time, after the refresh code?

My Code:
If(IsEmpty(Filter(Barcodes, Right(BarcodeScanner1.Value,8)=Right(SerialCode,8))), Patch(Barcodes, Defaults(Barcodes), {SerialCode:Right(BarcodeScanner1.Value,8), Title:Right(BarcodeScanner1.Value,8), UserName:MyUser, When:Now() } ),Set(_Duplicate,true)) ; Refresh(Barcodes);
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Vijay Tailor 2,961 on at

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Hi @MH3 ,

Not on AppStart but you can use your code in Screen - "OnVisiable" Properties.

and instead of Refresh you can navigate to the same screen and get the data in Invisible property.

For reference -