CODEWITHSUNDEEP
c#.netwpfobservablecollection
CareTaker22
CareTaker22

Reputation: 1310

Cannot convert Class to ObservableCollection

I'm trying to convert my class AllStock to ObservableCollection<AllStock> stockList but I get the following error:

The best overloaded method match for 'System.Collections.ObjectModel.Collection.Add(Haze.AllStock)' has some invalid arguments

Here is my coding:

I create my Observable Collection -

private ObservableCollection<AllStock> _stockList;
public ObservableCollection<AllStock> stockList
{
    get
    {
        if (_stockList == null)
            _stockList = new ObservableCollection<AllStock>();
        return _stockList;
    }
}

Inside my method -

var allStock = await service.GetSysproStockAsync();
var stock = allStock.Select(x =>
new AllStock
{
    Id = x.Id,
    ...
    MaterialThickness = x.MaterialThickness
});

stockList.Add(stock); //Error here - I want to add my 'var stock' to my ObservableCollection
dgSysproStock.ItemsSource = stockList;

Why would it be throwing out this error?

Upvotes: 2

Views: 733

Answers (2)

progrAmmar
progrAmmar

Reputation: 2670

The Add() for ObservableCollection requires a List so you need to provide a List instead.

Upvotes: 1

Manfred Radlwimmer
Manfred Radlwimmer

Reputation: 13394

Your Linq's Select method returns an IEnumerable but your stockList.Add has no overload for this datatype (only AllStock). 

foreach(AllStock aStock in stock)
    stockList.Add(aStock)

should work. The ObservableCollection unfortunatley doesn't have a AddRange method like the List<>

Upvotes: 5

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