Asp.Net MVC与Nullable的部分视图 <T> 模型

Question

I'm trying to develop a simple partial view:

@model Nullable<DateTime>
@if (Model == null)
{
    <span>Active</span>
}
else
{
    <span>Resigned on @Model.GetValueOrDefault().ToShortDateString()</span>                                    
}

and use it from another view:

@Html.Partial("ViewTemplates/UserStatus",user.ResignDate)

The view works perfectly unless it is a Nullable<T> .

I receive the error:

The model item passed into the dictionary is of type 'System.Collections.Generic.List 1[Models.UserModel]', but this dictionary requires a model item of type 'System.Nullable 1[System.DateTime]'.

Of course user.ResignDate is a nullable date time.

Any ideas?

Thanks

Answer 1

If model parameter passed to Partial method (user.ResignDate) is null, then asp.net-mvc passes caller view's model to Partial view, and you get error.

If you followed conventions ans placed UserStatus into DisplayTemplates folder, I would have reccommeded you to replace Partial call with DisplayFor method

@Html.DisplayFor(model => model.user.ResignDate, "UserStatus")

Answer 2

请检查user.ResignDate的数据类型，它应该是DateTime不可为空的DateTime