Select value of the search field

Hi there.

I'm currently working on a web app using Radzen. I'm using a RadzenDropDown with filtering and multiple selections allowed. I need to be able to create a new value in the list binded to the component if no corresponding value with the filtering input is found.

I tried to create an empty string value at the beginning of my list, then used the @bind-SearchText attribute to bind it to the first element of my list, so that it would take the value in the search field.
But the first value of the list stays blank. I guess the component has to be notified when a value in the list has changed ?

Is there a clean way to do so ? Or any good workaround if any ?

Thanks in advance !