# Problem in Blazor DataGrid with Custom Classes **URL:** \ **Category:** Blazor Server\ **Created:** [April 2, 2020, 5:25pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124 "2020-04-02T17:25:28Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 2, 2020, 5:25pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/1 "2020-04-02T17:25:28Z")
Just for fun I am trying to move a project from Angular to Blazor to see some of the advantages. I am running into an issue though. I have a class called "Character" for an RPG system. That class is on the namespace "BlazorProject" as such I call it using "BlazorProject.Character". I call the function GetCharacters on Radzen which is pretty simple: > public IEnumerable\ GetCharacters(){ > MongoClient client = new MongoClient(connectionString); > var database = client.GetDatabase("RPGBot"); > return database.GetCollection\("Characters").AsQueryable().ToList(); > } I call the function on the Invoke Method function on Load. Up to here it builds just fine. When I put a datagrid though to be able to see these values on the page... I get an error. On the designer page the datagrid gets generated like this: protected RadzenGrid\ grid0; Which is... clearly completely wrong. Why does this happen? Am I doing something very wrong? ---
**Author:** ![korchev](https://forum.radzen.com/user_avatar/forum.radzen.com/korchev/32/4_2.png) [@korchev](https://forum.radzen.com/u/korchev)\ **Post date:** [April 2, 2020, 7:22pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/2 "2020-04-02T19:22:09Z")
We fixed a similar issue with today's release 2.44.9. Try upgrading it ([you have to manually download it though](http://forum.radzen.com/t/the-application-window-crashes/3107/7)). Then add the DataGrid again and set its Data property. The type should be correct this time. ---
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 2, 2020, 7:36pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/3 "2020-04-02T19:36:02Z")
Sadly I did update just before filing this error, in fact I tried to do this again today exactly because I saw that patch. I will try again in a few hours. ---
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 2, 2020, 8:00pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/4 "2020-04-02T20:00:27Z")
See on the result page for the command: ![image](https://forum.radzen.com/uploads/default/original/2X/4/4e7eec1e10e3fa42d0cd6eb0d80caf82aec1d7aa.png) Completely right Here: ![image](https://forum.radzen.com/uploads/default/original/2X/3/3fbd377c19fbdb44f23654f90035460cf6804fd5.png) Seems right. Here: ![image](https://forum.radzen.com/uploads/default/original/2X/b/b591a6ce119e669988c5d088171b16cf8e4d2228.png) Wrong. Version of Radzen: ![image](https://forum.radzen.com/uploads/default/original/2X/8/82f1614d058d53b93820568f24bcddf2320f832c.png) Same error happens with DataList Making a Label and puttin it's text component to ${Variable1.ToArray()[0].Name} Works though. If I add them to the code generation ignore list and remove the bogus class names it does work. Kinda. ---
**Author:** ![korchev](https://forum.radzen.com/user_avatar/forum.radzen.com/korchev/32/4_2.png) [@korchev](https://forum.radzen.com/u/korchev)\ **Post date:** [April 3, 2020, 5:05am UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/5 "2020-04-03T05:05:39Z")
Try adding a custom attribute TItem to the DataGrid with the correct class name. It should override the autodetected one. We will investigate a possible fix. ---
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 3, 2020, 5:34am UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/6 "2020-04-03T05:34:08Z")
Going to the Meta file and changing it there on the itemType field was a fix for that. ---
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 8, 2020, 1:33am UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/7 "2020-04-08T01:33:25Z")
Going to bump this as I updated to the newest version that came out yesterday and this issue remains ---
**Author:** ![Levi\_Barrocas](https://forum.radzen.com/user_avatar/forum.radzen.com/levi_barrocas/32/1287_2.png) [@Levi\_Barrocas](https://forum.radzen.com/u/Levi_Barrocas)\ **Post date:** [April 8, 2020, 4:34pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/8 "2020-04-08T16:34:49Z")
The issue remains here even after changing to 2.44.11 ---
**Author:** ![korchev](https://forum.radzen.com/user_avatar/forum.radzen.com/korchev/32/4_2.png) [@korchev](https://forum.radzen.com/u/korchev)\ **Post date:** [April 8, 2020, 4:40pm UTC](https://forum.radzen.com/t/problem-in-blazor-datagrid-with-custom-classes/3124/9 "2020-04-08T16:40:48Z")
Unfortunately we can't reproduce it after the latest fix. You can try recreating the DataGrid or setting TItem as an attribute.