Server Side Programming Articles - Page 2447 of 2646

This round-trip ("R") format specifier is supported for the Single, Double, and BigInteger types.It ensures that a numeric value converted to a string is parsed back into the same numeric value.Let us see an example −Firstly, we have a double variable.double doubleVal = 0.91234582637;Now, use the ToString() method: and set the Round-trip format specifier.doubleVal.ToString("R", CultureInfo.InvariantCulture);Let us see the complete example −Example Live Demousing System; using System.Numerics; using System.Globalization; class Demo {    static void Main() {       double doubleVal = 0.91234582637;       string str = doubleVal.ToString("R", CultureInfo.InvariantCulture);       double resRound = double.Parse(str, CultureInfo.InvariantCulture);     ... Read More

With C#, we can easily convert a ValueTuple to a Tuple using ToTuple() method.Note − Add System.ValueTuple package to run ValueTuple program.Let’s see how to add it −Go to your projectRight click on the project in the solution explorerSelect “Manage NuGet Packages”You will reach the NuGet Package Manager.Now, click the Browse tab and find “ValueTuple”Finally, add System.ValueTuple packageExampleusing System; class Program {    static void Main() {       var val = (5, 50, 500, 5000);       //Add System.ValueTuple package to run this program       // ValueTuple       Console.WriteLine(“ValueTuple: ” val);       // Tuple       Tuple myTuple = val.ToTuple();       Console.WriteLine(“Tuple: ”+myTuple);    } }OutputValueTuple: (5, 50, 500, 5000) Tuple: (5, 50, 500, 5000)

To represent Int632as a Binary string in C#, use the ToString() method and set the base as the ToString() method’s second parameter i.e. 2 for Binary.Int32 represents a 32-bit signed integer.Firstly, set an Int64 variable −int val = 30;Now, convert it to a binary string by including 2 as the second parameter.Convert.ToString(val, 2)Example Live Demousing System; class Demo {    static void Main() {       int val = 30;       Console.WriteLine("Integer: "+val);       Console.Write("Binary String: "+Convert.ToString(val, 2));    } }OutputInteger: 30 Binary String: 11110

Drive information of an Operating System includes.Drive Name Volume Label Free Space Total Size Drive Format Drive TypeTo get above information about a drive, try to run the following code −Exampleusing System.IO; using System; class Program {    static void Main() {       DriveInfo driveInfo = new DriveInfo("D");       Console.WriteLine(driveInfo.Name);       Console.WriteLine(driveInfo.VolumeLabel);       Console.WriteLine(driveInfo.AvailableFreeSpace);       Console.WriteLine(driveInfo.TotalFreeSpace);       Console.WriteLine(driveInfo.TotalSize);       Console.WriteLine(driveInfo.DriveFormat);       Console.WriteLine(driveInfo.DriveType);    } }OutputThe following is the output −D: NTFS 76767677788 76767677788 45463434799 NTFS FixedNote − The output may vary with different Operating Systems.

Let’s say the following is the string −StringBuilder str = new StringBuilder("Patience is key!");To remove whitespace, you can use the replace method.str.Replace(" ", "");Let us see the complete code.Example Live Demousing System; using System.Text; class Demo {    static void Main() {       // Initial String       StringBuilder str = new StringBuilder("Patience is key!");       Console.WriteLine(str.ToString());       // Replace       str.Replace(" ", "");       // New String       Console.WriteLine(str.ToString());       Console.ReadLine();    } }OutputPatience is key! Patienceiskey!

To handle File Paths in C#, use the Path methods. These methods come under System.IO Namespace.Some of them are −GetExtensionRetrieve the extension of the file using the GetExtension() method.For example, .txt, .dat, etc.GetFileNameRetrieve the name of the file using the GetFileName() method.For example, new.txt, details.dat, etc.GetFileNameWithoutExtensionRetrieve the name of the file without extension using the GetFileNameWithoutExtension() method.For example, new, details, etc.Let us see an example −Example Live Demousing System.IO; using System; class Program {    static void Main() {       string myPath = "D:\one.txt";       string fileExtension = Path.GetExtension(myPath);       string fileName = Path.GetFileName(myPath);   ... Read More

Set an array.int[] array = new int[] { 50, 100, 150, 200, 250, 300, 350, 400 };Now, if you will print this array using a loop and new line, then the arrays will be visible vertically.To work it horizontally, use the Join() method and set spaces to separate array elements.string.Join(" ", array)Let us see the complete code.Example Live Demousing System; using System.Linq; using System.IO; class Program {    static void Main() {       int[] array = new int[] { 50, 100, 150, 200, 250, 300, 350, 400 };       Console.WriteLine(string.Join(" ", array));    } }Output50 100 150 200 250 300 350 400

Firstly, set a list and add elements.List myList = new List(); myList.Add("Jennings"); myList.Add("James"); myList.Add("Chris");Let’s say you need to delete the element “James” now. For that, use the Remove() method.myList.Remove("James");Here is the complete code.Example Live Demousing System.Collections.Generic; using System; class Program {    static void Main() {       List myList = new List();       myList.Add("Jennings");       myList.Add("James");       myList.Add("Chris");       Console.WriteLine("Initial List...");       foreach(string str in myList) {          Console.WriteLine(str);       }       myList.Remove("James");       Console.WriteLine("New List...");     ... Read More

Let’s say you have a ValueTuple and would like to convert it to a tuple, then use the ToTuple() method.With C#, we can easily convert a ValueTuple to a Tuple using ToTuple() method.Note − Add System.ValueTuple package to run ValueTuple program.Let’s see how to add it −Go to your projectRight click on the project in the solution explorerSelect “Manage NuGet Packages”You will reach the NuGet Package Manager.Now, click the Browse tab and find “ValueTuple”Finally, add System.ValueTuple packageLet us see an example to implement ToTuple() method.Exampleusing System; class Program {    static void Main() {       var val = ... Read More

If a File you are trying to find does not exist, then FileNotFoundException occurs.Here, we are try to find a file that does not exist using StreamReader() method.reader = new StreamReader("new.txt"))To read it we have used the following method −reader.ReadToEnd();Let us see the complete code.Exampleusing System.IO; using System; class Program {    static void Main() {       using (StreamReader reader = new StreamReader("new.txt")) {          reader.ReadToEnd();       }    } }The above code will generate the following exception since the file “new.txt” does not exist.Unhandled Exception: System.IO.FileNotFoundException: Could not find file …