Implementing Custom Profile Provider in ASP.NET MVC

Question

I tried a lot on implementing a custom profile provider in ASP.NET MVC. I\'ve read lots and lots of tutorials, but I can\'t find where my problem is. It\'s pretty similar to

Answer 1

The most likely cause is that

myCommand.Parameters.AddWithValue("@FirstName", (string)context["FirstName"]);

(string)context["FirstName"] is a null value. Even if you pass in a parameter to a sproc, if the value is null on a required parameter, then you will see this error. SQL Server (effectively) does not differentiate between a parameter not passed, and one passed with a null value.

You're seeing a SQL error. This is unrelated to MVC and MVC isn't really causing your problem. Determine if null is a valid value context["FirstName"], and if so, change your function to accept null values. If not, find out why context["FirstName"] is null.

Also, I don't think this line is going to add your parameter names correctly (with the "@" prefix).

myCommand.Parameters.AddWithValue(value.Name, value.PropertyValue);

Also, since this is MVC, make sure you have a control named FirstName on the form posting to:

public ActionResult CreateProfile(string Username, string Password, string FirstName, string LastName)

It reads fields based on the name, not the ID