dropdownlistfor in mvc Guid to string issue

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C#

ASP.NET

LINQ

string

MVC3

MVC4

I am trying to populate dropdownlistFor in mvc asp.net . primary key is GUID .

var result2 = db.Divisions.Select(f => new SelectListItem
{
    Value = f.DivisionID.ToString(),
    Text = f.DivisionName
});

ViewBag.SectionList =result1;

Facing issue in ToSring()

LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression.

Please suggest me some solution of this issue. Thanks in advance