Will this cause a Object null reference error?

Asked Mar 16 '22 at 16:15

Active Mar 16 '22 at 16:15

Viewed 25 times

I am hunting down a Object reference not set to an instance of an object error and I have narrowed it down to this piece of code

 var store = await _storeService.GetStoreById(brand, storeId);
            var scanDeviceDataEntryInput = new ScanDeviceDataEntryInputModel
            {
                IdScope = store.IoTScannerIdScope,
                DeviceId = store.IoTScannerDeviceId,
                DeviceKey = store.IoTScannerDeviceKey,
                ScanDeviceTemplateValues = new ScanDeviceTemplateValues()
            };

What happens here if the GetStoreById which is a DB search, searches a DB entry that does not have the 3 needed properties in the store object? will that case the null reference value for example if the IoTScannerIdScope does not exist in the CosmosDB document that is being returned?

And if so how do I solve that?

asked Mar 16 '22 at 16:15

Matt Douhan

A NRE will only occur if `_storeService` or `store` is null. – gunr2171 Mar 16 '22 at 16:18
This link is generally used for _debugging_ an NRE, but for you, you misunderstand what the exception means, which this link also explains. – gunr2171 Mar 16 '22 at 16:19
Have you tried it? What was your test results? – mxmissile Mar 16 '22 at 16:33

Will this cause a Object null reference error?

0 Answers0