Web25 okt. 2013 · List acceptedTypes = new List(){typeof(string), typeof(int), typeof(long)}; var stringTypeToCheck = "this is a string type"; var intTypeToCheck = 123; … Web14 nov. 2016 · I'm wondering, is there a way in Linq where I can use something similar to List.Any() where I can check if msgList contains a fruit, and if it does, also get the fruit which matched the inquiry. If I can get the matching index in 'filters' that should be fine.

c# - List of Lists of different types - Stack Overflow

Web7 nov. 2010 · (1) Catching exceptions instead of using is or as. (2) Catching Exception instead of InvalidCastException. (3) In the second code block, thinking C# is works the same way as VB6 Is -- actually == is the right operator, but it will still fail because (4) GetType () always returns a concrete class, never ever an interface like IEnumerable Web22 dec. 2016 · This is because according to the code, there is no "List" type, but actually a number of different generated types that correspond to every kind of generic that "List" receives throughout the course of your program. For example, if your program contained the following: var a = new List(); var b = new List(); var c = new List(); shutil.make_archive 压缩目录

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Web24 mei 2024 · List list = new List () { new MyClass () { Name = "name1", PropType = typeof (string), Value = "asdasd" }, new MyClass () { Name = "name2", PropType = typeof (bool), Value = true }, new MyClass () { Name = "name3", PropType = typeof (int), Value = 11 }, }; and then use it for example like this: WebList is a class that contains multiple objects of the same data type that can be accessed using an index. For example, // list containing integer values List number = new … Web10 mrt. 2015 · If your function returns an immutable list that doesn't need to be accessed by index (and you're on C# 4), you can write it like this: public IEnumerable GetBooks () { List books = new List (); return books; } If you can return an IEnumerable but you're using C# 3, you can do what cdhowie suggests: the paddle guy