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How to add variable in the object in C# [closed] - c#

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var data = #"{
""owner1"":""Name"",
}";
Need to add variable in the above object in c#

If your data is json string, you can modify it by JObject like this:
var jsonData = JObject.Parse(data);
jsonData["owner1"] = "owner1";
jsonData["owner2"] = "owner2";

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I'm new to C#.
I have a method that returns an object with the List of objects inside.
0 {{DapperRow, RecordedFormID = 'id1'}} object {Dapper.SqlMapper.DapperRow}
1 {{DapperRow, RecordedFormID = 'id2'}} object {Dapper.SqlMapper.DapperRow}
How can I get those ids as strings?
Here is a screenshot

You can use System.Linq namespace and do this:
yourObject.Select(x => x.RecordedFormID);

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public class itemObject { public string items; }
values - item = "name1,name2" or items = "item3"
Need linq to split by ',' if exists else one string array.

This doesnt require linq, its the default behaviour of String.Split
var array = items.Split(',');

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var ticketnumber = TempData["ticketId"] as Ticket;
ticketnumber.TicketId = model.TicketId;
db.SaveChanges();
HttpPostedFileBase file = Request.Files["ImageData"];
UploadRepository service = new UploadRepository();
int i = service.UploadImageInDataBase(file, model);
I have the value inside my tempdata but when i try to assign the value of it to the model value it doesnt save and even in debug it tells me the value hasnt changed so i just dont get what i am doing wrong.

You need to change the assignment:
From:
ticketnumber.TicketId = model.TicketId;
To:
model.TicketId = ticketnumber.TicketId;

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efStudent.sponsor = Convert.ToString(student.Sponsor);
My problem is that I can't convert the efStudent.sponsor which is a string to student.Sponsor, because it is a string[].
I need some help to convert it from string to string[].

To convert a string to string[], you can initialize a single-element array:
efStudent.sponsor = new string[] { Convert.ToString(student.Sponsor) };

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I have a URL, such as http://www.mydomain.com/?param1=asd2&param2=asd2.
I'd like to create a sort of Frequest object, so than I can easily do somethings like:
Request.Querystring("param1")
without do a further Split and access to the array. Can I?

Your question is not clear. Are you looking something like this?
var uri = new Uri("http://www.mydomain.com/?param1=asd2&param2=asd2");
var nv = uri.ParseQueryString();
Console.WriteLine(nv["param1"]);
EDIT
It seams one of my referenced libraries implemented this extension Method. Anyway, it can be done as
var uri = new Uri("http://www.mydomain.com/?param1=asd2&param2=asd2");
var nv = HttpUtility.ParseQueryString(uri.Query);
Console.WriteLine(nv["param1"]);