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Converting Anonymous Type To Nominal Type

开发者 https://www.devze.com 2023-04-04 03:13 出处:网络
I have a method here that should return a Rpt_IncidentWithConfirm object but I have no clue how to easily convert it to one. The only way I know how it do do what I have below which is very inefficien

I have a method here that should return a Rpt_IncidentWithConfirm object but I have no clue how to easily convert it to one. The only way I know how it do do what I have below which is very inefficient.

    public Rpt_IncidentWithConfirm GetIncident(string IncidentID)
    {
        db = new IncidentsDataContext();

        var incident = (from i in db.Rpt_IncidentWithConfirms
                       join d in db.DropDowns on i.incidentType equals d.value
                       where i.incidentID == Convert.ToInt32(IncidentID)
                       select new
                       {
                           i, d.text
                       }).SingleOrDefault();
        Rpt_IncidentWithConfirm r = new Rpt_IncidentWithConfirm();
        // I didn't want to have to type all this here because I have too开发者_C百科 many fields to map.

        r.bhaIncident = incident.i.bhaIncident;
        r.bitType = incident.i.bitType;
        r.Bottom_Connection = incident.i.Bottom_Connection;
        // And so on.


        return r;
    }


You can instantiate the Rpt_IncidentWithConfirm object directly in the query expression and only refer to the database values you need:

var incident = (from i in db.Rpt_IncidentWithConfirms
                join d in db.DropDowns on i.incidentType equals d.value
                where i.incidentID == Convert.ToInt32(IncidentID)
                select new Rpt_IncidentWithConfirm
                {
                   bhaIncident = i.bhaIncident
                 , bitType = i.bitType
                 , Bottom_Connection = i.Bottom_Connection
                }).SingleOrDefault();


Don't use anonymus type you can use the type you have to return

 select new Rpt_IncidentWithConfirm 
                   {
                       // set all properties you need
                   }).SingleOrDefault();

Edit: If your query is on collection type you want to return you can simply use result of query:

 return db.Rpt_IncidentWithConfirms.Where( ... ).FirstOrDefault();

or if u need value of text use :

//do something with incident.Text
return incident.i;


I actually used the answer linked below to solve my problem. It isn't exactly what I wanted to do but I don't have to type everything manually now. Return anonymous type results?

        public class IncidentWithDropDown
    {
        public Rpt_IncidentWithConfirm Incident { get; set; }
        public string IncidentTypeText { get; set; }
    }
    public IncidentWithDropDown GetIncident(string IncidentID)
    {
        db = new IncidentsDataContext();

        var incident = (from i in db.Rpt_IncidentWithConfirms
                       join d in db.DropDowns on i.incidentType equals d.value
                       where i.incidentID == Convert.ToInt32(IncidentID)
                       select new IncidentWithDropDown()
                       {
                           Incident = i,
                           IncidentTypeText = d.text
                       }).SingleOrDefault();

        return incident;
    }


you are not required to create an anonymous type in the select just create an object of the the named type instead

public Rpt_IncidentWithConfirm GetIncident(string IncidentID)
    {
        db = new IncidentsDataContext();

        var return (from i in db.Rpt_IncidentWithConfirms
                       join d in db.DropDowns on i.incidentType equals d.value
                       where i.incidentID == Convert.ToInt32(IncidentID)
                       select new Rpt_IncidentWithConfirm(){

                           bhaIncident =i.bhaIncident,
                           bitType = i.bitType,
                           Bottom_Connection = i.Bottom_Connection,
                           // And so on.
                        }).SingleOrDefault()
    }
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