usual way of accessing nested properties no longer works

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Last Updated: 16 Nov 2021 18:21 by ADMIN

Chris

Created on: 16 Nov 2021 10:22

Category: Grid

Type: Bug Report

usual way of accessing nested properties no longer works

Hi,

I am using a grid on a data structure that has nested properties inside. Previously, I was able to do this which worked fine: (notice the first 2 colums)

              <TelerikGrid Data="@PackedInfo.PackedParts" Height="100%">
                    <GridColumns>
                        <GridColumn Field=@nameof(PackedPart.Part.PartNo) Title="Part no" />
                        <GridColumn Field=@nameof(PackedPart.Part.PartDescription) Title="Description" />
                        <GridColumn Field=@nameof(PackedPart.UnitWeightG) Title="Substance Weight" />
                        <GridColumn Field=@nameof(PackedPart.FlashPointCentigrade) Title="Flash point" />
                        <GridColumn Field=@nameof(PackedPart.Pg) Title="PG" />
                        <GridColumn Field=@nameof(PackedPart.Qty) Title="PG" />
                    </GridColumns>
                </TelerikGrid>

I recently upgraded to the latest version (Telerik.UI.for.Blazor (2.29.0) and noticed that the first 2 fields are no longer displaying. I fixed this, by specifying the field names as string values:

               <TelerikGrid Data="@PackedInfo.PackedParts" Height="100%">
                    <GridColumns>
                        <GridColumn Field="Part.PartNo" Title="Part no" />
                        <GridColumn Field="Part.PartDescription" Title="Description" />
                        <GridColumn Field=@nameof(PackedPart.UnitWeightG) Title="Substance Weight" />
                        <GridColumn Field=@nameof(PackedPart.FlashPointCentigrade) Title="Flash point" />
                        <GridColumn Field=@nameof(PackedPart.Pg) Title="PG" />
                        <GridColumn Field=@nameof(PackedPart.Qty) Title="PG" />
                    </GridColumns>
                </TelerikGrid>

I have also tried using @nameof(Part.PartNo) but that didn't work either. Only providing nested properties as string values works. This should not be the intended behaviour i'm sure?

regards,

Chris Nateghi

1 comment

ADMIN

Marin Bratanov

Posted on: 16 Nov 2021 18:21

Hello Chris,

Using a plain string is the correct way to do this, the issue stems from the behavior of the nameof() method - it returns only the last field name, without the parent one. You can read more about this in the following article: https://docs.telerik.com/blazor-ui/knowledge-base/grid-bind-navigation-property-complex-object. This has always been the case since I wrote it in early 2019. Frankly, I am quite surprised that the nameof() approach has worked at all for your situation.

With that said, I must mark this as "declined" as it is not a bug in the component but a configuration matter stemming from the framework behavior (the way nameof() returns information).

Regards,
Marin Bratanov
Progress Telerik

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