addrange

Implement AddRange on ObservableCollection with proper support for DataBinding

我的未来我决定 提交于 2020-01-01 17:28:11
问题 I would like my own descendant of ObservableCollection to support AddRange method. Here is what I currently have: public class ObservableCollectionPlus<T> : ObservableCollection<T> { public void InsertRange(IEnumerable<T> items) { this.CheckReentrancy(); foreach (var item in items) Items.Add(item); var type = NotifyCollectionChangedAction.Reset; var colChanged = new NotifyCollectionChangedEventArgs(type); var countChanged = new PropertyChangedEventArgs("Count"); OnPropertyChanged(countChanged

Is there an AddRange equivalent for a HashSet in C#

女生的网名这么多〃 提交于 2019-12-20 08:52:32
问题 With a list you can do: list.AddRange(otherCollection); There is no add range method in a HashSet . What is the best way to add another collection to a HashSet? 回答1: For HashSet<T> , the name is UnionWith. This is to indicate the distinct way the HashSet works. You cannot safely Add a set of random elements to it like in Collections , some elements may naturally evaporate. I think that UnionWith takes its name after "merging with another HashSet ", however, there's an overload for IEnumerable

Why does the addRange function not work in Google Apps Script?

ε祈祈猫儿з 提交于 2019-12-13 02:58:05
问题 I want to import a graphical evaluation (diagram) into a new file using a macro. So the evaluation should not be inserted on a new sheet in the associated file, but a completely new file should be created, in which the graphical evaluation (in the form of a combination diagram) is then copied. The file should be either a Google Sheets or an Excel file. The combination diagram already exists and is located in a Google sheet, but it should be copied into a new file automatically with the help

c# Linq `List<Interface>.AddRange` Method Not Working

耗尽温柔 提交于 2019-12-07 00:15:10
问题 I have an interface defined as below: public interface TestInterface{ int id { get; set; } } And two Linq-to-SQL classes implementing that interface: public class tblTestA : TestInterface{ public int id { get; set; } } public class tblTestB : TestInterface{ public int id { get; set; } } I have IEnumerable lists a and b populated by the database records from tblTestA and tblTestB IEnumerable<tblTestA> a = db.tblTestAs.AsEnumerable(); IEnumerable<tblTestB> b = db.tblTestBs.AsEnumerable();

Implement AddRange on ObservableCollection with proper support for DataBinding

吃可爱长大的小学妹 提交于 2019-12-04 13:01:53
I would like my own descendant of ObservableCollection to support AddRange method. Here is what I currently have: public class ObservableCollectionPlus<T> : ObservableCollection<T> { public void InsertRange(IEnumerable<T> items) { this.CheckReentrancy(); foreach (var item in items) Items.Add(item); var type = NotifyCollectionChangedAction.Reset; var colChanged = new NotifyCollectionChangedEventArgs(type); var countChanged = new PropertyChangedEventArgs("Count"); OnPropertyChanged(countChanged); OnCollectionChanged(colChanged); } } I don't have much knowledge of what's exactly going on here and

Is there an AddRange equivalent for a HashSet in C#

痴心易碎 提交于 2019-12-02 18:17:38
With a list you can do: list.AddRange(otherCollection); There is no add range method in a HashSet . What is the best way to add another collection to a HashSet? quetzalcoatl For HashSet<T> , the name is UnionWith . This is to indicate the distinct way the HashSet works. You cannot safely Add a set of random elements to it like in Collections , some elements may naturally evaporate. I think that UnionWith takes its name after "merging with another HashSet ", however, there's an overload for IEnumerable<T> too. RoadieRich This is one way: public static class Extensions { public static bool

How to specify range >2GB for HttpWebRequest in .NET 3.5

独自空忆成欢 提交于 2019-12-01 09:14:13
I'm building this class to download files in parts/sections/segments. In .NET 4.0, I can use this code to specify the range to download from long startPos = int.MaxValue+1; HttpWebRequest.AddRange(startPos); and it works because there is a long overload for the AddRange method. When I looked up the .NET 3.5 version, I realised the AddRange() method allows using int only. The possible workaround would be using the AddRange(string, int) or AddRange(string, int, int) methods. Since the class will have to work in .NET 3.5, I'll have to go with the string specification but unfortunately I can't