RadzenValidate

Radzen.Blazor Components
1

I am trying to implement RadzenRequiredValidatior to RadzenDropDownDataGrid and I assumed that it is the same as RadzenDropDown example. So I put code for validation like this:

then I receive an error
warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
Unhandled exception rendering component: Cannot find component with Name 019
System.InvalidOperationException: Cannot find component with Name 019
at Radzen.Blazor.ValidatorBase.ValidateModel(Object sender, ValidationRequestedEventArgs args)
at Microsoft.AspNetCore.Components.Forms.EditContext.Validate()
at Radzen.Blazor.RadzenTemplateForm`1.OnSubmit()
at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

where 019 from an error is the content of the validating field. So I tried another approach to set component without @ and it looks like this "bRRAD.OPSTINA" and an error now looks like this:

warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
Unhandled exception rendering component: Cannot find component with Name bRRAD.OPSTINA
System.InvalidOperationException: Cannot find component with Name bRRAD.OPSTINA
at Radzen.Blazor.ValidatorBase.ValidateModel(Object sender, ValidationRequestedEventArgs args)
at Microsoft.AspNetCore.Components.Forms.EditContext.Validate()
at Radzen.Blazor.RadzenTemplateForm`1.OnSubmit()
at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

I am out of ideas on what to put in Component. Similar problem I have with the RadzenRadioButtonList validator.

2

Hi @Djordje,

The Component attribute of the validator should be the same as the Name of the component it validates. It should also be a constant (should not change when the component value changes). Check the demo for reference.

3

Thank you Atanas, It was crucial to me that name is not any previously defined data but whatever I want. It might be "BlaBla" just to use the same string as the component during validation.