Problem with Primary Key in a Partial View shared by Create and Edit views.

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I have a partial view (user control) that is shared by my Create and Edit views. When I use it in the Edit view, I have to to include an hidden field (Html.HiddenFor) to prevent a 'Row changed or not found' error in my data service, but when I use it in the Create view, I have to remove the PK hidden field, to prevent an error over trying to insert into an identity column.
It is not feasible to not use identity columns in this application, so how can I 'switch' that PK hidden field on or off depending on which action has been invoked?

Posted 12-Jul-10 23:51pm

Brady Kelly

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Andre Vianna · Answer 1 · 2010-08-14T05:45:00

As a suggestion you can use ViewData to pass the type of action and avoid creating the control. Like this:

In the edit view page

Html.RenderPartial("YourControl", Model, new { actionType = "edit" });

In the create view page

Html.RenderPartial("YourControl", Model, new { actionType = "create" });>

In the control view page

if (ViewData["actionType"] == "edit") { 
    Html.HiddenFor(m => m.Id)
}

Like this the hidden field will only be rendered when the control is called from the Edit view page.