title: The property 'text' is part of the object's key information and cannot be modified
body: <p>So I have a table in the database, with a column that is simply an nvarchar(800).</p>
  
  <p>When I try to do:</p>
  
  <pre><code>try
  {
      UserTable = (from x in entities.userTable where x.uID == uID select x).Single();
      UserTable.DateCreated = DateTime.Now;
      UserTable.text= newText;
      Update(UserTable);
  }
  </code></pre>
  
  <p>I get the exception in catch: <code>"The property 'text' is part of the object's key information and cannot be modified."</code></p>
  
  <p>When I look into the table, I don't see anything under "key" or "index". So it's not a key, I don't understand why C# is giving me incorrect information. Nothing in SQL Management Studio says anything about "text" being a key or index. What do I do?</p>