Adding Index=0 as an attribute to EjsDropDownList, adds it to the item list not as default value. The first item is indeed selected, however it is being added as an item.
I'm using version 17.3.29.
<EjsDropDownList TValue="string"
DataSource="@_list"
Placeholder="Dates Found"
FloatLabelType="FloatLabelType.Auto"
Index="0">
<DropDownListFieldSettings Text="TheDates" Value="ID" />
<DropDownListEvents TValue="string" ValueChange="onChange" />
</EjsDropDownList>
Attachment:
EjsDropDownDefaultValueError_60e5dda7.zip