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Found 34489 Articles for Programming
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
782 Views
The following is our list with elements −IList emp = new List() { new Employee() { EmployeeRank = 4, EmpName = "Amit", EmpMarks = 90 } , new Employee() { EmployeeRank = 05, EmpName = "Raman", EmpMarks = 95 } };Now use orderby and descending to sort elements in descending order.var res = from str in emp orderby str.EmpName descending select str;Example Live Demousing System; using System.Linq; using System.Collections.Generic; public class Demo { public static void Main() { IList emp = new List() { new Employee() { EmployeeRank = 4, EmpName ... Read More
![Ankith Reddy](https://www.tutorialspoint.com/assets/profiles/22328/profile/60_142162-1519038074.jpg)
98 Views
Get the minimum value from a sequence using the Min() method in C#.The following is our list.List list = new List { 1, 2, 3, 4, 5, 6 };Now, use Queryable Min() method to get minimum element.list.AsQueryable().Min();Exampleusing System; using System.Collections.Generic; using System.Linq; class Demo { static void Main() { List list = new List { 1, 2, 3, 4, 5, 6 }; foreach(long ele in list) { Console.WriteLine(ele); } // getting lowest element long min_num = list.AsQueryable().Min(); Console.WriteLine("Smallest number = {0}", mix_num); } }
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
136 Views
Get the maximum value from a sequence using the Max() method.Let’s say the following is our list.List list = new List { 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000 };Use the Max() method to get the largest element.list.AsQueryable().Max();Example Live Demousing System; using System.Collections.Generic; using System.Linq; class Demo { static void Main() { List list = new List { 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000 }; foreach(long ele in list) Console.WriteLine(ele); // getting largest element long max_num = list.AsQueryable().Max(); Console.WriteLine("Largest number = {0}", max_num); } }Output200 400 600 800 1000 1200 1400 1600 1800 2000 Largest number = 2000
![Arjun Thakur](https://www.tutorialspoint.com/assets/profiles/13574/profile/60_74441-1560315595.jpg)
3K+ Views
AsQueryable() method is used to get an IQueryable reference.Let us see an example to find sum of integer values.Firstly, set an integer array.var arr = new int[] { 100, 200, 300, 400 };Now to find the sum, use the Queryable Sum() and AsQueryable() method.Queryable.Sum(arr.AsQueryable());The following is the complete code.Example Live Demousing System; using System.Linq; class Demo { static void Main() { var arr = new int[] { 100, 200, 300, 400 }; int res = Queryable.Sum(arr.AsQueryable()); Console.WriteLine("Sum: "+res); } }OutputSum: 1000
![Chandu yadav](https://www.tutorialspoint.com/assets/profiles/22330/profile/60_142811-1519038104.jpg)
1K+ Views
Convert the specified value to its equivalent string using the ToString() method.Initialize a bool value.bool boolVal = false;Now, to convert it to a string, use the ToString() method.Convert.ToString(boolVal)The following is the complete example.Example Live Demousing System; public class Demo { public static void Main() { bool boolVal = false; Console.WriteLine(Convert.ToString(boolVal)); } }OutputFalse
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
1K+ Views
The method matches instances of a pattern and is used to extract value based on a pattern.Let us see hoe to check for a valid URL.For that, pass the regex expression in the Matches method.MatchCollection mc = Regex.Matches(text, expr);Above, the expr is our expression that we have set to check for valid URL."^(http|http(s)?://)?([\w-]+\.)+[\w-]+[.com|.in|.org]+(\[\?%&=]*)?”The text we have set to check is a URL i.e.https://demo.comLet us see the complete code.Example Live Demousing System; using System.Text.RegularExpressions; namespace Demo { class Program { private static void showMatch(string text, string expr) { MatchCollection mc = Regex.Matches(text, expr); ... Read More
![Ankith Reddy](https://www.tutorialspoint.com/assets/profiles/22328/profile/60_142162-1519038074.jpg)
19K+ Views
Use the FirstorDefault() method to return the first element of a sequence or a default value if element isn’t there.The following is our empty list −List val = new List { };Now, we cannot display the first element, since it is an empty collection. For that, use the FirstorDefault() method to display the default value.val.AsQueryable().FirstOrDefault();The following is the complete example.Example Live Demousing System; using System.Collections.Generic; using System.Linq; class Demo { static void Main() { List val = new List { }; double d = val.AsQueryable().FirstOrDefault(); Console.WriteLine("Default Value = "+d); ... Read More
![karthikeya Boyini](https://www.tutorialspoint.com/assets/profiles/13518/profile/60_31598-1537784993.jpg)
443 Views
Find common elements between two arrays using the Intersect() method.The following are our arrays −int[] val1 = { 15, 20, 40, 60, 75, 90 }; int[] val2 = { 17, 25, 35, 55, 75, 90 };To perform intersection.val1.AsQueryable().Intersect(val2);Let us see the entire example.Example Live Demousing System; using System.Collections.Generic; using System.Linq; class Demo { static void Main() { int[] val1 = { 15, 20, 40, 60, 75, 90 }; int[] val2 = { 17, 25, 35, 55, 75, 90 }; IEnumerable res = val1.AsQueryable().Intersect(val2); Console.WriteLine("Intersection of both the lists..."); foreach (int a in res) Console.WriteLine(a); } }OutputIntersection of both the lists... 75 90
![Samual Sam](https://www.tutorialspoint.com/assets/profiles/13514/profile/60_83486-1512649303.jpg)
4K+ Views
To cast a specific type to its IEnumerable equivalent, use the AsEnumerable() method. It is an extension method.The following is our array −int[] arr = new int[5]; arr[0] = 10; arr[1] = 20; arr[2] = 30; arr[3] = 40; arr[4] = 50;Now, get the IEnumerable equivalent.arr.AsEnumerable();Example Live Demousing System; using System.Linq; class Demo { static void Main() { int[] arr = new int[5]; arr[0] = 10; arr[1] = 20; arr[2] = 30; arr[3] = 40; arr[4] = 50; var res = arr.AsEnumerable(); foreach (var ele in res) { Console.WriteLine(ele); } } }Output10 20 30 40 50
![George John](https://www.tutorialspoint.com/assets/profiles/13511/profile/60_58410-1512537824.png)
2K+ Views
The following are our strings in a list −List list = new List { "keyboard", "mouse", "joystick", "monitor" };To use the first 3 letters, use substring method and use it under the Linq Select method.IEnumerable res = list.AsQueryable() .Cast() .Select(str => str.Substring(0, 3));Example Live Demousing System; using System.Linq; using System.Collections.Generic; class Demo { static void Main() { List list = new List { "keyboard", "mouse", "joystick", "monitor" }; // getting first 3 letters from every string IEnumerable res = list.AsQueryable() .Cast() .Select(str => str.Substring(0,3)); foreach (string str in res) { Console.WriteLine(str); } } }Outputkey mou joy mon