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To match all digits in a string, use C# Regex.Firstly, set a string with digits −string str = "These are my marks: 90 out of 100!";Use the following regular expression to get digits in a string −@"\d+"The following is the code −Example Live Demousing System; using System.Text.RegularExpressions; namespace Demo { class Program { private static void showMatch(string text, string expr) { Console.WriteLine("The Expression: " + expr); MatchCollection mc = Regex.Matches(text, expr); foreach (Match m in mc) { Console.WriteLine(m); ... Read More
To style every checked element, use the CSS :checked selector. You can try to run the following code to implement the :checked selector −ExampleLive Demo input:checked { height: 20px; width: 20px; } Fav sports: Football Cricket Tennis Tennis Output
Use the Regex.Replace method to remove the end part of a string in C#.The following is the string −string s1 = "Demo Text!";Now, let us say you need to remove the exclamation mark (!) from the string. For that just set it to empty using replace −System.Text.RegularExpressions.Regex.Replace(s1, "!", "");Here is the complete code −Example Live Demousing System; using System.Text.RegularExpressions; namespace Demo { class Program { static void Main(string[] args) { string s1 = "Demo Text!"; // replace the end part string s2 = System.Text.RegularExpressions.Regex.Replace(s1, "!", ... Read More
Set a string −string str = "Bit and Bat";Let’s say you need to replace whatever comes inside B and t to A and capitalize the complete string. For that, use Replace −Regex.Replace(str, "B.t", "BAT");Let us see the complete code −Example Live Demousing System; using System.Text.RegularExpressions; namespace Demo { class Program { static void Main(string[] args) { string str = "Bit and Bat"; Console.WriteLine(str); string res = Regex.Replace(str, "B.t", "BAT"); Console.WriteLine(res); } } }OutputBit and Bat BAT and BAT
Set a character with WhiteSpace −char c = ' ';To check if a character is a whitespace character, use the char.IsWhiteSpace method −if (char.IsWhiteSpace(c)) {}Let us see the complete code −Example Live Demousing System; class Demo { static void Main() { char c = ' '; if (char.IsWhiteSpace(c)) { Console.WriteLine("Whitespace character!"); } } }OutputWhitespace character!
Declare an array −int[] arr = { 20, 50, -35, 25, 60 };Now to get the largest element from an array, use the Max() method −arr.Max());Here is the complete code −Example Live Demousing System; using System.Linq; class Demo { static void Main() { int[] arr = { 20, 50, -35, 25, 60 }; Console.WriteLine(arr.Max()); } }Output60
The SequenceEqual method is used to test collections for equality.Set sequences −string[] arr1 = { "This", "is", "it" }; string[] arr2 = { "My", "work", "report" }; string[] arr3 = { "This", "is", "it" };Now, use the SequenceEquals methods to check whether sequences are same or not −arr1.SequenceEqual(arr2);The following is an example −Example Live Demousing System; using System.Linq; class Program { static void Main() { string[] arr1 = { "This", "is", "it" }; string[] arr2 = { "My", "work", "report" }; string[] arr3 = { "This", "is", "it" }; bool res1 = arr1.SequenceEqual(arr2); Console.WriteLine(res1); bool res2 = arr1.SequenceEqual(arr3); Console.WriteLine(res2); } }OutputFalse True
The position: fixed; property allows you to position element relative to the viewport. You can try to run the following code to implement CSS position: fixed;ExampleLive Demo div{ position: fixed; bottom: 0; right: 0; width: 200px; border: 3px solid blue; } position: fixed; The position: fixed; property allows you to position element relative to the viewport. div has position: fixed; Output
Use the group by the operator in C# to separate the results of an expression into parts.Let’s say the following is our array −int[] a = { 5, 10, 15, 20, 25, 30 };Now, using Group by and orderby, we will find the elements greater than 20 −var check = from element in a orderby element group element by chkGreater(element);The following is the complete code −Example Live Demousing System; using System.Linq; class Demo { static void Main() { int[] a = { 5, 10, 15, 20, 25, 30 }; var check = from element ... Read More
To convert a string to a bool, use the Bool.parse method in C# −Firstly, set a string −string str = "true";Now, convert it to bool −bool.Parse(str);Here is the complete code −Example Live Demousing System; using System.Linq; class Demo { static void Main() { string str = "true"; bool res = bool.Parse(str); Console.WriteLine(res); } }OutputTrue