Scheduler doesn't load data from DataManager

[Unknown]

Hi,

I have trouble when I using the DataManager to load data into a Scheduler.

If I set the data directly into the DataSource of the SchedulerEventSettings, then the data load, but when I use the DataManger then not.

I created a example with 2 scheduler. You can find it into the counter.razor.

Another question: Can I use a DataManager for the SchedulerResource as well? And how will that look like.

Thanks for your help.

Best regards.

Attachment: Scheduler_e7cf3c63.zip

[Balasubramanian Sattanathan]

Hi Nils, 

Greetings from Syncfusion Support. 

We have analyzed your reported scenario at our end and we would suggest you to use DataManager like the below code snippet. We have modified the sample which can be downloaded from the below link. And also we let you know that we can use the DataManager for the SchedulerResources too 

<ScheduleEventSettings TValue="AppointmentData"> 

    <SfDataManager AdaptorInstance="@typeof(CustomAdaptor)" Adaptor="Adaptors.CustomAdaptor"></SfDataManager> 

</ScheduleEventSettings> 

Sample: https://www.syncfusion.com/downloads/support/forum/159306/ze/DataGrid-1934417684.zip 

UG: https://blazor.syncfusion.com/documentation/scheduler/data-binding/#using-custom-adaptor 

Kindly refer the above links and let us know if you need further assistance. 

Regards, 

Balasubramanian S

[Unknown]

Hi, 

thanks for the answer. But I need to pass objects into the DataAdapter, which I initialize in the OnInitialized method. How can I do it ?

Best regards

[Unknown]

Hi, is there an answer you can give me?

[Nevitha Ravi]

Hi Nils, 

We are not clear about your requirement, can you please share following details to provide prompt solution. 

• Whether you need custom component for CustomAdaptor
• What you have to declare in OnInitialized
• Whether you need to load the appointments for the first scheduler in the counter page.
• Share the issue details if you are facing any

Regards, 

Nevitha 

[Unknown]

Hi,

here the answers:

Whether you need custom component for CustomAdaptor

- yes

What you have to declare in OnInitialized

- The OnInitialized  is just an example. Base on the inputs and changes the user do in the UI, I need to update the Queryable. And then I need to update the Scheduler or Grid based on the new Queryable.

Whether you need to load the appointments for the first scheduler in the counter page.

- yes

Share the issue details if you are facing any

You can find an example in my first post (counter.razor). Here I using a DataAdaptor as BlazorComponent because I need to pass the DataSource into the DataAdapter. 

<SfDataManager Adaptor="Adaptors.CustomAdaptor">

     <HQSchedulerAdaptorComponent Date="@CurrentDate" DataSource="@DataSource">HQSchedulerAdaptorComponent>

SfDataManager>

This is necessary because the DataSource is an Queryable which I generate via Linq-Expressions. But for this I need to inject the DbContext and the repositories.

For convenience only I don't do this in the example. 

And the recommended way from you do not allow to inject in general, because the constructor need to be parameterless.

  

That is the reason why I inject everything in my blazor compoment (here the counter.razor), build the Queryable there and then pass it to the DataAdaptor.

Best regards

[Balasubramanian Sattanathan]

Hi Nils, 

Thanks for the details. 

We have analyzed your problem at our end and let you know that you have declared the data manager wrongly and it is the cause for the reported problem. So we would suggest you to declare the data manager inside the schedule event settings like the below code snippet.  

<ScheduleEventSettings TValue="AppointmentDataDto">
<SfDataManager Adaptor="Adaptors.CustomAdaptor">
<HQSchedulerAdaptorComponent ></HQSchedulerAdaptorComponent>
</SfDataManager>
</ScheduleEventSettings> 

Modified project: https://www.syncfusion.com/downloads/support/forum/159306/ze/DataGrid258634930.zip 

Kindly try the above solution and let us know if you need further assistance. 

Regards, 

Balasubramanian S

[Unknown]

Thank you for the hint. I did't see that. Now it works.

[Nevitha Ravi]

Hi Nils, 

You are welcome 😊, please get back to us if you need any assistance. 

Regards, 

Nevitha