CODEWITHSUNDEEP
asp.net-mvcasp.net-mvc-4razor
XWiśniowiecki
XWiśniowiecki

Reputation: 1843

Is View reseting all values in its Model?

In my Model I have some DateTime variable that is not touched in View template, but set to DateTime.Now in GET method before sending to View. When I displayed it in View it is OK (presenting actual Date and Time). Rest of variables is changed in form's fields and then send with POST method to contoller's action.

When I set breakpoint in contoller's POST action then I see the value of the variable is set to {0001-01-01 00:00:00} even though I didn't change the value anywhere before.

So the question is: Is View reseting all values in its Model?

Upvotes: 1

Views: 53

Answers (2)

JLRishe
JLRishe

Reputation: 101700

It sounds like your datetime is not included among the fields that are sent back to the server and it's therefore getting initialized with the DateTime default value (0001-01-01).

You need to roundtrip it back to your server if you want your POST handler to receive it:

@Html.HiddenFor(m => m.MyDate)

Upvotes: 1

WeSt
WeSt

Reputation: 2684

You have to look behind the scenes to see what is happening here. The GET method returns the model with the variables set, which is transferred to the client. On a submit, the client takes all fields and sends them to the server, where it is parsed to the Model again. Only the fields that are present as some HTML code (e.g. inputs) or set via JavaScript on the client are transferred. To keep the DateTime value, you need to create a Hidden field for it.

Html.HiddenFor(m => m.DateProperty)

See this question, which covers the same problem: What does HTML.HiddenFor do?

Upvotes: 1

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