Razor视图中隐藏的HiddenFor字段中的枚举值而不是键（Asp.Net MVC 5）

Question

I try to use this solution:

MVC3 HiddenFor with Enum. Input's value is enum key not value?

However it does not work in MVC5 Razor view. I get this error:

An exception of type 'System.InvalidOperationException' occurred in System.Web.Mvc.dll but was not handled in user code

Additional information: Templates can be used only with field access, property access, single-dimension array index, or single-parameter custom indexer expressions.

How can I get enum value in hidden field instead of enum key?

Enum type:

public enum LineType : int
{
    Account = 0,
    Inventory = 1,
    Service = 2
}

In Razor view I have:

 @Html.HiddenFor(m => (int)m.LineTypeID)

LineTypeID is of type LineType.

Answer 1

You can do like

@Html.HiddenFor(m => m.LineTypeID, new {@Value = (int)Model.LineTypeID})

This overrides key value

Answer 2

Just to further detail the answer here:

@Html.HiddenFor(m => (int)m.LineTypeID)

This will not work. You cannot cast on the template. When you cast it creates a new variable and this will not work.

Remove the cast to int and add the @value field as described.

@Html.HiddenFor(m => m.LineTypeID, new {@Value = (int)m.LineTypeID, id = "LineTypeID"})

I like to add the Id field so I can later easily access the value in JavaScript:

var lineTypeIDValue = parseInt($("#LineTypeID").val());

Also in C# you do not need to add a type to your enum.

public enum LineType
{
    Account = 0,
    Inventory = 1,
    Service = 2
}

You should now