C# where contains list of strings

Author: jjhc

August undefined, 2024

WebYou need this: myList.Where (listStrinEntry => myString.IndexOf (listStringEntry) != -1) Where: myList is List has the values that myString has to contain at any position. So de facto you search if myString contains any of the entries from the list. Webpublic class Item { public string itemname; } So basically, have a class (lets say.. class A) with a list of items, and a function that checks takes the list of items of class A, and then compares it to another list (lets call it B), but compare it by …

C# 如何使用Linq检查字符串列表中是否包含任何字符 …

WebApr 13, 2024 · C# : How to determine if a string contains any matches of a list of stringsTo Access My Live Chat Page, On Google, Search for "hows tech developer connect"So... WebMar 13, 2009 · Contains on a list is an O (N) operation. If you had a different data structure, such as a sorted list or a Dictionary, you would dramatically reduce your time. Accessing a key in a sorted list is usually O (log N) time, and in a hash is usually O (1) time. Share Follow answered Mar 12, 2009 at 23:45 Robert P 15.6k 10 70 112 Add a comment diamond shrooms

.net - Creating a List of Lists in C# - Stack Overflow

WebC# 如何使用Linq检查字符串列表中是否包含任何字符串,c#,linq,list,contains,C#,Linq,List,Contains,我正在构造一个linq查询，它将检查数据库中的字符串是否包含字符串列表中的任何字符串差不多 query = query.Where(x => x.tags .Contains(--any of the items in my list of strings--)); 我还想知道列表中有多少项是匹配 … WebC# Dictionary Versus List Lookup Time Both lists and dictionaries are used to store collections of data. A Dictionary int, T > and List T > are similar, both are random access data structures of the .NET framework.The Dictionary is based on a hash table, that means it uses a hash lookup, which is a rather efficient algorithm to look up things, on the other … WebTour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site cisco switch enable dhcp on interface

How to check if a string contains any strings from a list in Entity ...

C# Linq .Contains list of string - Stack Overflow

WebApr 12, 2024 · C# : How to use Linq to check if a list of strings contains any string in a listTo Access My Live Chat Page, On Google, Search for "hows tech developer conne... WebList test3 = test1.Where (w => !test2.Contains (w)).ToList (); The query above works on an exact match but not partial matches. I have looked at other queries but I can find a close comparison to this with Linq. Any ideas or anywhere you can point me to would be a great help. c# linq Share Improve this question Follow cisco switch enable http serverWebDec 14, 2024 · A string is an object of type String whose value is text. Internally, the text is stored as a sequential read-only collection of Char objects. There's no null-terminating … diamond shriner rings

"WebThe LINQ Contains Method in C# is used to check whether a sequence or collection (i.e. data source) contains a specified element or not. If the data source contains the … " - C# where contains list of strings

C# where contains list of strings

C# : How to determine if a string contains any matches of …

WebThe LINQ Contains Method in C# is used to check whether a sequence or collection (i.e. data source) contains a specified element or not. If the data source contains the specified element, then it returns true else returns false. There are there Contains Methods available in C# and they are implemented in two different namespaces. WebNov 12, 2009 · I don't know it this is the source of the problem, but I would start by refactoring the code so that textBox1.Text is read only once: string theText = textBox1.Text.ToUpper (); query = Files .Where (file => file.Fileinfo.Name.ToUpper ().Contains (theText)) .Take (7).ToList (); Share Improve this answer Follow answered …

Did you know?

WebFeb 8, 2014 · var searchIds = new List {1,2,3,4,5}; var result = persons.Where (p => p.Locations.Any (l => searchIds.Contains (l.Id))); Contains will be translated to IN statement. Keep in mind that the id list goes into the sql statement. If your id list is huge then you'll end up having a huge query. Share Improve this answer Follow WebJun 20, 2024 · List.Contains (T) Method is used to check whether an element is in the List or not. Properties of List: It is different from the arrays. A list can be resized dynamically but arrays cannot. List class can accept null as a valid value for reference types and it also allows duplicate elements.

Web@curiousBoy I'm pretty sure that GroupBy is implemented using some kind of hashed structure internally, so basically it should have about the same performance. According to my best knowledge adding elements to a HashSet is "cheap" in terms of computation and uses at most the same amount of memory as the original list. Also, I'm not sure but … WebJul 23, 2024 · separator: It is a string array which delimits the substrings in this string, an empty array that contains no delimiters, or null. count: It is the maximum number of substring to return. options: RemoveEmptyEntries option to omit empty array elements from the array returned or None option to include empty array elements in the array returned. …

WebSep 1, 2016 · private void button_Click (object sender, RoutedEventArgs e) { List names = new List () { "One", "Two", "Three" }; try { var files = from file in Directory.EnumerateFiles (@"D:\Logs\", "*.log", SearchOption.AllDirectories) from line in File.ReadLines (file) where line.Contains ("One") select new { File = file, Line = line }; foreach (var f in … WebOct 5, 2009 · 5 Answers Sorted by: 203 If you're using .NET 3.5, it's easy: public class ListHelper { public static bool ContainsAllItems (List a, List b) { return !b.Except (a).Any (); } } This checks whether there are any elements in b which aren't in a - and then inverts the result.

WebMar 11, 2016 · You can do so easily using Any instead of Contains: List list = new List (); list.Add ("Horse"); list.Add ("Shorse"); var needle = "horse"; var contains = list.Any (x => x.ToLower () == needle.ToLower ()); // true Share Improve this answer Follow edited Mar 11, 2016 at 23:40 answered Mar 11, 2016 at 23:36 Gediminas Masaitis

WebC# 使用List.Contains方法查找字符串返回false，但手动比较返回true,c#,.net,string,string-comparison,C#,.net,String,String Comparison,我有一个字符串列表，我试图确定其中一 … cisco switches in visio diamond shroomz gummiesWebMar 31, 2015 · How to find a string is already present in a list.For example i have a list that contains data now if i want to write the data in to another list during this i want to keep a condition whether the string is already present in the list.I am using the below code but its not working can you kindly help me C# diamond shruumz sour apple peachhttp://duoduokou.com/csharp/40863376912850839834.html cisco switch enable https accesshttp://duoduokou.com/csharp/63080713467323182164.html diamond shuffle hoehttp://duoduokou.com/csharp/63080713467323182164.html diamond sicknan blogspotWebopen System open System.Runtime.CompilerServices [] type StringExtensions = [] static member Contains(str: string, substring, comp: StringComparison) … cisco switch enable snmp