date edit using guid key-CodePudding

I have used guid as primary key for my table.

namespace entities
{
    public class position 
    {
        [Key]
        public Guid positionId { get; set; }
        public string Name { get; set; }
    }
}

From my view page, I am sending this positionId as string and then to the method GetById

How to use the Guid for data edit? I am trying to do:

public JsonResult GetById(string id)
        {
            try
            {
                var data = (from z in db.positions
                            where z.positionId == id
                            select z).ToList();
            }
            catch (Exception)
            {

                throw;
            }
        }

This query is showing error as: Operator == can not be applied to operands of type string and guid. How to convert this string id to type Guid?

CodePudding user response：

Why don't just use Guid instead of string? Anyway to convert a string to Guid you should use the Guid.Parse() method

CodePudding user response：

By following Kvble answer:

public JsonResult GetById(string id)
        {
            try
            {
                var data = (from z in db.positions
                            where z.positionId == Guid.Parse(id);
                            select z).ToList();
            }
            catch (Exception)
            {

                throw;
            }
        }