Recent questions tagged c#

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C#: Set a bool variable to true if the 3-character passcode contains a digit

Problem: I have been learning C# and got an assignment in which I have to read a string as input from a user and then check if it contains a digit or not. If it contains a digit, a bool variable must be set to true, or else it must remain false. After this, a validity ... of the bool variable. I have no idea how I can do this task. If any of you could help, that would be a great pleasure. Thanks!

asked 20 hours ago Sheeza 3.9k points

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1 answer 5 views

How to c# press any key to continue?

I was working on that. I just want to know how to do that?

asked 21 hours ago TeamScript 3k points

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1 answer 4 views

What is one significant difference between a while loop and a do-while loop?

Problem: Hello Programmers, I am a noob and just came to know about the loop constructs in C#. I tried running while and do-while loops in a program and got different output. Following are the programs that I executed: //Program 1 int a = 0; do { Console.WriteLine( ... ; } Console.ReadKey(); The output has confused me and I want to know the major difference in the while and do-while loops. Thanks!

asked 2 days ago Sheeza 3.9k points

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Look at the following statement. while (x++ < 10) which operator is used first?

Problem: Hello! I tried running following program: class Program { static void Main(string[] args) { int x = 9; while (x++ < 10) Console.WriteLine(x); Console.ReadKey(); } } The output that I assumed was nothing but a blank screen because x++ = 9 ... 10 I am unable to understand the output. I want to know how that output was generated and in what manner the conditions and operators are evaluated.

asked 3 days ago Sheeza 3.9k points

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1 answer 4 views

All of the following are essential to initializing a for loop, except which one?

Problem: Hi there! I am new to the world of programming and learning loop constructs in C#. My concept for loops is clear but I just recently encountered a code somewhere in which for loop was initialized as follows: for(;;) { } I tried running that code, but it ... I make some mistake but I want to know more about ‘for’ loops and all the possible ways in which it can be used. Thanks!

asked 3 days ago Sheeza 3.9k points

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Which method could be used to strip specific characters from the end of a string?

Problem: Hi there! I am newbie and I am want to strip away specific characters from the end of a string. I am programming in C#. I have tried Remove() method as follows: using System; namespace ConsoleApp2 { class Program { static void Main(string[] args) { ... the index of string myself. I want to know that is there any way in C# to remove characters from strings without specifying the index?

asked 4 days ago Sheeza 3.9k points

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difference between asp.net and asp.net core

Problem I would like understand the difference between ASP.NET Core and, so called, ordinary ASP.NET. I have significant experience programming ASP.NET and I had an opportunity to take a look on ASP.NET Core project and it feels like completely different creature.

asked 4 days ago alexh 1.6k points

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Write a method max that has two string parameters and returns the larger of the two.

Problem: Hi there! I am new to the world of programming. My programming teacher gave me an assignment in which I have to write a program in which there would be a function that will take two strings as input from user and will compare the size of both strings ... the larger string of the two. I have no clue how to do that. Please provide me with the sample program with proper description. Thanks

asked 5 days ago Sheeza 3.9k points

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C# How to convert a string to enumeration

Problem: Hi there! I am working with enumerations in C# and I am trying to check whether certain string exists in my enumeration or not. I am using ‘if’ condition with == operator but the compiler is giving some error and I am not getting the desired output. How can I convert a string to enumeration in order to check whether it exists in enum or not?

asked Nov 24 Sheeza 3.9k points

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1 answer 6 views

How to convert an Image into Byte Array in C#?

Problem: Hi there! I have been working in C# since last month and have learned a lot of things. I have written many console programs for converting one type of data to another. Recently, my teacher gave me an assignment in which I have to convert an Image to byte array. I ... with images yet and I have no idea how can I complete the task. If any of you could help me, I would be grateful thanks.

asked Nov 23 Sheeza 3.9k points

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1 answer 10 views

c# wait for thread to finish

Problem I never have developed multithreading applications before, so I am a bit confused how to make one thread to wait for another. In general, I have UI thread and 2 other threads, which do some processing. I need the processing to be executed in different thread (not the UI one) in ... Task t2 = Task.Factory.StartNew(new Action(() => { //Do another stuff here })); } How can I sync t1 and t2?

asked Nov 19 alexh 1.6k points

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1 answer 6 views

c# public get private set

Problem I am confused by properties access modifiers. When declare set accessor of the property as private I know it restricts access to the property assignment, it allows to set value only from the class methods. But how can I initialize it or assign to any value? What for ... So why does it exist in C# ,when should I use it and how should I populate these properties from outside of the class ?

asked Nov 18 alexh 1.6k points

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1 answer 11 views

C# How to convert integer number to byte array

Problem: Hi there! I am trying to convert an integer number to a byte array using following snippet: static void Main(string[] args) { int i = 44; byte[] b = Convert.ToByte(i); //Error foreach (byte byt in b) Console.WriteLine(byt); Console.ReadKey(); ... says “Cannot implicitly convert byte to byte[]”. Does anybody have any idea why this error is occuring and how can I resolve it?

asked Nov 18 Sheeza 3.9k points

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1 answer 10 views

C# How to check whether a key exists in dictionary

Problem: Hello programmers! I am a newbie in the world of programming and I am working with dictionaries in C#. I want to check whether a key exists in Dictionary or not. If the key does not exist I want my program to automatically add the key to the dictionary. I have tried many ways but nothing works. I would be glad if any of you could help me. Thanks!

asked Nov 18 Sheeza 3.9k points

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1 answer 3 views

C# How to convert enumeration to integer

Problem: Hi programmers! I am trying to store the index of the elements in an enumeration in an integer variable but I am facing some issue that says “cannot implicitly convert types”. My question is that how can I achieve what I am trying to do?? If someone could explain in easy words, that would be appreciable. Thanks.

asked Nov 17 Sheeza 3.9k points

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1 answer 11 views

C# How to Remove Item from an Array

Problem: Hi there! I am working with arrays and I am trying to delete the element at index 4 using RemoveAt() method. This method is not working with arrays and I am facing an error that says: “no definition for RemoveAt() exists…….”. What should I do? Why is this error occurring? Please guide if I am doing something wrong.

asked Nov 15 Sheeza 3.9k points

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1 answer 13 views

C# using string Contains to match case insensitive

Problem: Hello developer, I have seen the following line of code to check if a string contains certain characters or not. static void Main(string[] args) { string s = "Thermometer"; bool str = s.Contains("meter", StringComparison.OrdinalIgnoreCase); Console.WriteLine(str); ... it was. Please tell me what is the problem with my code and explain if there is any alternative way to do so. Thanks!

asked Nov 14 Sheeza 3.9k points

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1 answer 14 views

C# how to use reflection to get property value

Problem: Hi there! I am a beginner and I just read about System.Reflection class recently. I came to know that I can use it to convert one object to another as per requirement. I want to know more about it and how can I use Reflection class to get the value of a property?

asked Nov 14 Sheeza 3.9k points

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1 answer 8 views

c# interface vs abstract class

Problem What is the difference between interfaces and abstract classes? When should I use interface and when abstract class? Does exist any rule of thumb or decision tree for that?

asked Nov 14 alexh 1.6k points

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1 answer 18 views

c# cast string to int

Problem I have a form with textbox, the user types a value, which I need to process as string. What is the best way to do this? var age = txtAge.Text;

asked Nov 11 alexh 1.6k points

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