I have tried to extend EditForm like
MyEditFormBase: EditForm
{
}
and in MyEditForm.razor
@inherits MyEditFormBase
@ChildContent
when i use this like
<MyEditForm Model="TestModel">
<div>
<InputText @bind-Value="TestModel.Name"></InputText>
</div>
</MyEditForm>
this renders like
Microsoft.AspNetCore.Components.RenderFragment`1[Microsoft.AspNetCore.Components.Forms.EditContext]
The EditForm's ChildContent is not a regular RenderFragment, but a generic RenderFragment of type RenderFragment<EditContext> (also commonly referred to as a Template).
In order to render that, you have to pass the argument like so:
@ChildContent(EditContext)
The advantage of such a template is that you can then access the EditContext object from the child content via @context.