Action method expected parameter named Id and nothing otherwise
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codingbiz
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Published on 2012-09-01T09:31:09Z
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2012/09/01
9:38 UTC
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The Error
The parameters dictionary contains a null entry for parameter 'UserId' of non-nullable type 'System.Int64' for method 'System.Web.Mvc.ActionResult Predict(Int64)' in 'sportingbiz.Controllers.PredictionController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters
This does not work. Throws the error mentioned above
http://mysite/User/Profile/15
This works
http://mysite/User/Profile/?UserID=15
The Controller Action
public ActionResult Profile(long UserID)
{
}
When I changed the parameter name to Id it works. I think it's because Id was specified in the route collection (Global.asax). Is it possible to tell MVC that UserId should map to Id without changing it in the Global.asax
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