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C# 6.0

C#6.0

Great Reads

Graphing Calculator in C# with LES

by Qwertie

It has 41 features in about 1000 lines of code* - but only 3 lines are needed to parse the expressions you type in. Uses WinForms, BackgroundWorker, GDI+ and LES.

by Ratish Philip

The next version of the useful WPF controls is here

Random Name Generation Using Markov Chains

by phil.o

This article describes the building of Markov Chains and their use for generating random names or words.

Using Reactive Extensions - the basics

by Kenneth Haugland

How to connect hot observables to Rx

Latest Articles

Boilerplate Guide to Creating a Source Generator - Part 6

by Dave Elliott

A series of 6 articles to provide you with a boilerplate guide to create Source Generators.

Boilerplate Guide to Creating a Source Generator - Part 3

by Dave Elliott

A series of 6 articles to provide you with a boilerplate guide to create Source Generators.

Boilerplate Guide to Creating a Source Generator - Part 4

by Dave Elliott

A series of 6 articles to provide you with a boilerplate guide to create Source Generators.

Boilerplate Guide to Creating a Source Generator - Part 5

by Dave Elliott

A series of 6 articles to provide you with a boilerplate guide to create Source Generators.

All Articles

C# 6.0

Graphing Calculator in C# with LES

12 Jun 2017 by Qwertie

It has 41 features in about 1000 lines of code* - but only 3 lines are needed to parse the expressions you type in. Uses WinForms, BackgroundWorker, GDI+ and LES.

15 Mar 2016 by Ratish Philip

The next version of the useful WPF controls is here

Random Name Generation Using Markov Chains

31 Oct 2016 by phil.o

This article describes the building of Markov Chains and their use for generating random names or words.

Using Reactive Extensions - the basics

29 Feb 2016 by Kenneth Haugland

How to connect hot observables to Rx

Serverless - DevOps Little Helper

29 Apr 2019 by Florian Rappl

Why not use serverless computing to perform maintenance tasks in Azure DevOps?

Weak Events in .NET using Reactive Extensions (Rx)

12 Feb 2016 by Kenneth Haugland

Subscribe weakly to an event using Reactive Extensions

Dynamic Modules with Prism and the Modern UI for WPF Toolkit

23 Mar 2016 by Rubén Hinojosa Chapel

Prototype for a plugin architecture based on the Prism Library and the Modern UI for WPF (MUI) toolkit

Null-Conditional Operator in C# 6.0

8 Apr 2016 by Dmitry Zinchenko

Null-conditional operator in C# 6.0 is not just a mere convenient syntactic sugar.

UWP Alien Sokoban - Part 3

26 Oct 2016 by Daniel Vaughan

A fun UWP implementation of the game Sokoban, demonstrating some new features of XAML and C# 6.0. Part 3

Windows Workflow and WPF

30 Jun 2017 by Daniel Ziegelmiller

Connecting WPF with Windows Workflow (WF)

Load Data From Database Using Web API

2 Nov 2015 by Sibeesh Passion

How to load data from database using Web API

A C# 6 Gotcha: Initialization vs. Expression Bodied Members

16 Dec 2015 by Bill Wagner

A C# 6 gotcha: Initialization vs. Expression Bodied Members

Grid with Dynamic Number of Rows and Columns - Part 1

3 Jan 2017 by Illya Reznykov

WPF datagrid that has same sized dynamically defined number of rows and columns

Using Telecom V&H Coordinates In C#

27 Oct 2015 by Bill Menees

AT&T’s vertical and horizontal coordinates can be used to calculate the latitude and longitude for rate centers and wire centers as well as the distances between them.

SPA Using Angular 2, ASP.NET Core 1.1 and Entity Framework Core (Part 2)

19 Apr 2017 by Pankaj Kumar Choudhary

Part 2 of how to set up Angular2 with .NET Core

SmartFormat.NET /2 - Enhancing string.Format to new levels

3 Dec 2016 by axuno

SmartFormat.NET /2 is a string template library that allows you to fill a string with data. Easy to use, fast, extensible, and extremely powerful. Allows for named {placeholders} using any data type, conditional formatting, iterating through IEnumerables, and much more.

C# property memory usage?

2 Mar 2016 by Dave Kreskowiak

Next time, just put the code in the post, not in an image.No, you're wrong about the "8 bytes".The top code snippet in the image is just a shortcut, an "auto-implemented" property. Behind the scenes it's doing exactly the same thing as the second code snippet in the image.In both...

Destroy an element of an array

1 Jun 2016 by Matt T Heffron

If you must modify an array in place then when you delete an element, you need to copy all of the following elements down one position, and put the zero at the end position:int [] marks = new int[5] { 1, 2, 3, 4, 5};int deleteAtIndex = 1;for (int i = deleteAtIndex; i

Grid with Dynamic Number of Rows and Columns - Part 2

4 Jan 2017 by Illya Reznykov

Data grid cells in WPF with defined fixed size with number of rows and columns updated dynamically

AttributeAuthorization with Custom Roles in ASP.NET Core

17 Feb 2017 by Mosti16

Use a custom Authorize Attribute which use a own PermissionProvider with custom Permission-Management.

Regular expression for some format

21 Apr 2022 by Richard Deeming

Simple: ^[-+]?\d+(\.\d+)?$ .NET Regular Expressions | Microsoft Docs[^] But depending on your requirements, it would probably be simpler to use decimal.TryParse to test whether the string is a valid number. Edit: Excluding zero is slightly...

Dictionary.ContainsKey never finds a key (using a collection Initializer)

28 Aug 2015 by CPallini

You are comparing references to objects (they cannot be equal for differenct objects, even if they contain same data).See here: "Comparing object used as Key in Dictionary"[^].

Extending the PayPal .NET API to Detect Errors

12 Oct 2015 by jnegron215

This short tip will show you how to extend PayPal's .NET API by adding new members to their objects and page-level functions that will help provide a smooth error-handling experience.

How to bind data for grid view from sql server using store procedure in windows form application

1 Nov 2015 by Suvendu Shekhar Giri

Try this-con = new SqlConnection("server=(local);database=sp;user id=sa;password =******"); con.Open(); cmd = new SqlCommand(); cmd.Connection = con; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "P_PB_Getall"; ...

How Can I Get Colum Name From Sqlserver?

21 Dec 2015 by Richard MacCutchan

A quick scan of the documentation finds https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.getname(v=vs.110).aspx[^].

jParser PCL .NET Json Parser

15 Feb 2016 by Ahmed Amer Jaf

Fast n Easy Way to parse Json data

Trying to create a certain mechanics in windows form aplication

21 Jun 2016 by Kornfeld Eliyahu Peter

PropertyGrid Class (System.Windows.Forms)[^]

Why my C++ code is not working

6 Jul 2016 by Jochen Arndt

You are passing the vector by value to your Divisor function:void Divisor(int n, vector vec)When calling the function, a new vector instance is created and filled with the data of the passed vector. But the content of the passed vector is not changed.To change the content of the...

How to start the beginning point of the OS creation?

22 Jul 2016 by Dave Kreskowiak

You already got the asnwer to this question 2 days ago on your other question, How to create a simple operating system?[^].First, Linux is not a programming language.Second, there is no such thing as "connect the kernel of the system". When writing your own O/S, YOU WRITE THE...

When I update the image, updated image is not shwing in imageurl

14 Sep 2016 by Suvendu Shekhar Giri

The easiest solution is to change the image url so that everytime it gets an unique URL.Try something like following example -MyImage.ImageUrl ="Images/NewImage1.jpg?" + DateTime.Now.Ticks.ToString();If this doesn't help then let me know.Thanks

Prolem in password encraption

27 Sep 2017 by OriginalGriff

Don't do it like that. Never concatenate strings to build a SQL command. It leaves you wide open to accidental or deliberate SQL Injection attack which can destroy your entire database. Use Parametrized queries instead. When you concatenate strings, you cause problems because SQL receives...

Xamarin Notes - Set Up the Environment (Windows and IOS)

5 Jan 2018 by didourebai

How to set up Xamarin Notes environment

Case Insensitive Search Filter in OData ASP.NET Core 2.0 Web API as an OWIN Middleware

31 Jan 2018 by Pawel idzikowski

How to replace the web API request query string to provide case insensitive OData search

How to convert json to XML with attributes in C#

6 Jun 2018 by Richard Deeming

If you want to stick with this inefficient approach, you'll need the JSON property names to be prefixed with the "@" character: public class SyncActivity { [JsonProperty("@MemberId")] public string MemberId { get; set; } [JsonProperty("@UserId")] public string UserId { get;...

How do I pass an object to another program?

7 Oct 2018 by Kornfeld Eliyahu Peter

See this case: // project for A.exe namspace A { public class FileFind { // ... } class A { public static void Main(string[] args) { // using FileFind... } } } // project for B.exe namspace B { public class FileFind { // ... } class B { public static...

C# -> move all excel files from folder a to B ...

20 Dec 2018 by Richard Deeming

File.Move will only move a single file; it doesn't know how to process wildcards. You need to list the files you want to move, and move them individually: string sourcePath = @"C:\Users\Chris\Desktop\"; string destinationPath = @"C:\Users\Chris\Documents\Excel\"; foreach (string sourceFile in...

Get all 30 days from now in .NET

1 Feb 2019 by F-ES Sitecore

Enumerable.Range(1, 31).Select(day => DateTime.Now.AddDays(day)).ToList();

How do I reduce image size without losing any quality

21 Mar 2019 by TheRealSteveJudge

is this possible to reduce the size without losing quality The answer is "No". Downsizing an image means reducing the information it contains. Please have a look at Understanding Digital Image Interpolation[^] There it is said "an image will always lose some quality each time interpolation...

How do I reduce image size without losing any quality

21 Mar 2019 by CPallini

Quote: 'without losing any quality' This is a very strict requirement and TheRealSteveJudge is right, you cannot satisfy it. However, if you relax such a requirement and accept losing some quality then have a look at Libor Tinka's "Image Resizing - outperform GDI+"[^].

How do I reduce image size without losing any quality

21 Mar 2019 by OriginalGriff

There are two forms of "reduced size": file size, which can - sometimes - be reduced without losing quality; and resolution, which can't. Files size can be reduced, if you load a file and save it as a different format - but the target format has to be a lossless compression method, which JPG...

Unable to cast object of type'mainwindow to type system.componentmodel.isynchronizeinvoke in WPF

7 Aug 2019 by jimmson

ISynchronizeInvoke is for WinForms, not for WPF. You need to use a bit different approach. You can find more information on this here: winforms - WPF window doesn't implement ISynchronizeInvoke.InvokeRequired ERROR - Stack Overflow[^] c# - How to Use ISynchronizeInvoke interface? - Stack...

Why will this simple code not work in C#

30 Aug 2019 by OriginalGriff

Quotes won't help you at all: in C# the quote character delimits single character literal values: 'a', 'B', '1' Putting them round a line of code won't help. So try something like this: string path = @"D:\Test Data\MyFile.txt"; string allTheText = File.ReadAllText(path); The '@' in front of the...

How to remove trailing zeros in a decimal in C#

10 Dec 2019 by Maciej Los

The error message is not related to the subject of "trailing zeros". I'd suggest to read this: ALTER TABLE ALTER COLUMN [access-id] failed because one or more objects access this column[^]

Regular expression for some format

21 Apr 2022 by Patrice T

Quote: I have tried so many combination. but no luck. It should not be a matter of luck, but a matter of learning and practicing. Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre -...

What wrong with this code

12 Mar 2015 by Praveen Kumar Upadhyay

Please check below link. It has very clearly explained reason behind this.http://stackoverflow.com/questions/295833/nullable-type-issue-with-conditional-operator[^]

Accessing configuration variables using Dependency Injection in MVC 6

7 May 2015 by Mostafa Asaduzzaman

How to access configuration variables via dependency injection in MVC 6 - Visual Studio 2015 RC

Dictionary.ContainsKey never finds a key (using a collection Initializer)

28 Aug 2015 by OriginalGriff

Um.AlarmMapped is a class, which means that your Dictionary consists of a reference to a class instance, and a reference to a string.So any checking against the dictionary keys to find a matych will compare class references, not class content.So if your dictionary contains these...

MergeSort in c# array error

18 Jan 2016 by CPallini

The specific errors happens because there is a bug in the following lineQuote:for (int i = 0; i

Dictionary.add gives me a replicate of the last object added c#

22 Feb 2016 by Sascha Lefèvre

The method Dictionary.Add(TKey key, TValue value) will throw an exception if you try to insert a second identical key (whereas setting a value via the indexer property (MapToObject[d.Id] = d;) will simply overwrite an existing entry with the same key).So if you do not get an...

How to put dynamic column name in linq or where clause

18 Mar 2016 by Sascha Lefèvre

The solution is to dynamically build the required expression tree which normally gets done for you "under the hood" by using those LINQ methods.That's a moderately advanced topic but you don't have to do it yourself: There already are several solutions for this which you could use:Build...

SQL-Server-2008R2

How to capture fingerprint I am using C#

27 Apr 2016 by OriginalGriff

You should talk to the people who created it - 3M[^] - they should provide technical support and will know more about their product than we will. If they don't, then find another supplier and demand your money back!Almost certainly they will provide a driver and sample software source.

This code true random number or pseudo random generator and why please ?

29 Apr 2016 by OriginalGriff

All software based methods are pseudo random: They use a "fixed algorithm" to generate the sequence of "random" numbers and the whole sequence can be repeated by providing the same seed value. The Random class uses the system clock to initialize the sequence when the instance is created, as can...

I want to count number of chars and words from textbox. How can I do this?

2 Jun 2016 by George Jonsson

Just for the fun of it you can do it with two regular expressions.int wordCount = Regex.Matches(txtStringName.Value, "\\w+").Count;int charCount = Regex.Matches(txtStringName.Value, "\\w").Count;

Can I place four links in a single cell of a datagridview in C# windows

22 Jun 2016 by Sergey Alexandrovich Kryukov

That's right, because a singly link is a natural and clear thing.You can go out of this limitation if you develop your own cell type derived from DataGridViewCell. I'm not sure that such UI element would be practically reasonable; you decide.—SA

Why my sort function not working?

25 Jun 2016 by OriginalGriff

Indentation helps a lot when you look at code: it means you can see what is goign on a lot more clearly...But a quick glance says that the swap function:void swap(int *i,int *k){int j;// js any temperory element*i=*k;*k=j;}Is not going to work!What value do you put in k each...

Passing the structure array from C# to C++

28 Jul 2016 by KarstenK

The primary problem is the memory layout in the different runtime, so my first and hard coded advice is to use only native values (int, double and char[]) in such structures. You cant transfer objects!!!The second is to transfer read-only, that mean that each runtime copies the values one by...

How to convert javascript date to C#?

4 Sep 2016 by Karthik_Mahalingam

No need to replace the '-' with '/'DateTime StartDate = DateTime.ParseExact(scheduleDates[0], "yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);

Date time in C# trouble

23 Sep 2016 by BillW33

First some advice on asking questions. If you have any code at all show what you have done so far. If you really don't know where to start, as you indicate in your question at least give as much detail as you can on what you are trying to accomplish. We can't know exactly what you need unless...

Please check the error

21 Oct 2016 by Patrice T

Quote:Not displaying data which I stored using database in C#Here you 2 questions.Either ypu fail to recover the data, or you fail to display the data.The debugger will show what your code does, it will help you to spot the problem.You should learn to use the debugger as soon as...

How can I send SMS using mobile phone in C# window application?

12 Jan 2017 by OriginalGriff

Quote:I have searched a lot on google but cant get any helpful material.:sigh:You clearly didn't search too hard...send SMS through my Mobile Phone GSM C# - Google Search[^]

Can I define string variable in "for" loop?

17 Feb 2017 by OriginalGriff

You can define a string variable in the body of a for loop without problems:for (int i = 0; i

How to make row event popup in gridview when I click on the particular ro of a person

20 Feb 2017 by Karthik_Mahalingam

try this protected void Page_Load(object sender, EventArgs e) { if (!this.IsPostBack) { DataTable dt = new DataTable(); dt.Columns.Add("Id"); dt.Columns.Add("Name"); dt.Columns.Add("Description");...

Object reference not set to an instance of an object.

10 Mar 2017 by ZurdoDev

You have this in web.config:

Object reference not set to an instance of an object.

10 Mar 2017 by Karthik_Mahalingam

change the connection string nameSqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["SST321ConnectionString"].ConnectionString);

Check if text exist in my database C#

8 May 2017 by CHill60

I would use ExecuteScalar to be more efficient... like this:private void btnNext_Click(object sender, EventArgs e) { if (comboBox1.SelectedIndex == -1) return; using (var conn = new SqlConnection(connstring)) { conn.Open(); var cmd = new SqlCommand { ...

How do I have a generic type as a field of a tuple?

11 Sep 2017 by Graeme_Grant

I think that this is what you are trying to do: Tuple> TupleFactory(string value, List values) { return new Tuple>(value, values); } To use: var listOfTuples1 = TupleFactory("test value", new List { "test value 1", "test...

Create a multi user windows application

12 Feb 2018 by Maciej Los

Yes, you can use SQL server database to share data and detect data changes to push notification for specific user. See: SqlDependency Class (System.Data.SqlClient)[^] Detecting Changes with SqlDependency | Microsoft Docs[^] Using SqlDependency for data change events[^] Good luck!

Create a multi user windows application

12 Feb 2018 by RickZeeland

As SQL Server is not the easiest database to install and manage, I would recommend using PostgreSQL instead, here is an introduction: Using PostgreSQL in your C# (.NET) application (An introduction)[^] Talking about notifications to other users, here is an CodeProject article (take note Maciej...

Ref or out how to set it as object

21 Feb 2018 by OriginalGriff

Let's simplify this a little: private void MyMethod(ref object o) { } private void MyButton_Click(object sender, EventArgs ew) { OleDbDataAdapter da = new OleDbDataAdapter(); MyMethod(ref da); ... Why do you get an error saying: cannot convert from 'ref...

Multiple files from 2 or more file upload controls

2 Nov 2018 by Richard Deeming

Use HttpFileCollectionBase.GetMultiple[^] to retrieve the list of posted files for each input: IList additionalDocs = Request.Files.GetMultiple("AdditionalDocs"); IList budgetDocs = Request.Files.GetMultiple("BudgetDocs"); IList...

How use pointer in C# like C++

7 Nov 2018 by Afzaal Ahmad Zeeshan

If you want to use C# because, then you have to leave all that pointer luxury with the C++. The core concept of C# was to enable you to have a managed environment, where you only had to write the business logic instead of having to manage the low-level memory and hardware as well. C# itself is...

Handle left over bytes when copying in multiples of 8x bytes?

23 Dec 2018 by Richard MacCutchan

The logic is fairly straightforward: byteArray = // input data numberOfBytes = // length of input data blockSize = 8 offset = 0 WHILE numberOfBytes > 0 DO copybytes(byteArray[offset], destinationAddress, blocksize) // copy a block offset += blockSize ...

Getting invalid column name issue with entity framework

29 Jan 2019 by OriginalGriff

The error is pretty explicit: Invalid column name 'GcdId' Compare your production database against your development DB - at a guess you have missing columns that you will need to create and populate.

entity-framework

C# invalid cast error and and possibly table issues.

29 Jan 2019 by CHill60

Your ExecuteScalar command is returning Null (see the comment from @Richard-Deeming) You should check for the null before attempting to cast the return value. A neat way of doing that is as follows: object result = cmdSELECT.ExecuteScalar(); result = (result == DBNull.Value) ? null : result;...

Which event used to preview print document instead of print ?

2 Feb 2019 by OriginalGriff

The whole idea of a PrintDocument is that the PrintPage method is used to print the data regardless of the destination. The difference is that for a PrintPreview you do this: PrintPreviewDialog ppd = new PrintPreviewDialog(); ppd.Document = myPrintDocument; ppdialog.Show(); And for a "real"...

Run integration unit test without SQL server

4 Feb 2019 by OriginalGriff

Well ... SQL Server 2017 Express Edition | Microsoft[^] - it's free, so no licence cost, and you should be developing against an Express version anyway. Developing / testing against the production DB server is a good recipe for "Oh f*ck" moments and production downtime while databases are...

How to download pdf file from ssrs

19 Mar 2019 by David_Wimbley

This has been done plenty before, but here is a link to get you started. When we click on a button, SEND EMAIL with SSRS report[^] This is an answer i provided in the past. If you are still stuck, i suggest you research how to make server side calls from HTML on button click using either...

Accepting Partial Resources with Newtonsoft.Json

27 Mar 2019 by Florian Rappl, Manuel Römer

Supporting partial PUT (or PATCH) operations in ASP.NET Core with Newtonsoft.Json

Why VIEW data don't show correctly in gridview ?

4 Apr 2019 by Richard Deeming

It looks like you've created an entity type to represent the values returned from your view, and you've set the Count column as the primary key for that type. EF uses the Identity map pattern[^]. When it tries to load the third row (Count = 2), it thinks that it has already loaded that record....

entity-framework

How to bind two SQL tables info together

11 Apr 2019 by CHill60

From the way you have phrased your question it sounds like you need to learn some simple database design techniques. There are plenty of free resources to help you - here is a starting point[^] Basically, each row in your Products table should have a unique identifier - this is often an int...

How can I solve this please guide

2 May 2019 by Patrice T

Quote: when ever i run this code it gives error on line which i underline Your code do not behave the way you expect, or you don't understand why ! There is an almost universal solution: Run your code on debugger step by step, inspect variables. The debugger is here to show you what your code...

Error on datetime nullable

8 Jul 2019 by OriginalGriff

In addition to using the HasValue and Value properties that have been suggested, you may find this useful: Working with Age: it's not the same as a TimeSpan![^]

C# tasks, await and async

17 Jul 2019 by Richard Deeming

Quote: Am i right that this concept is NOT used to ensure UI Responsiveness? No - async / await is great at ensuring UI responsiveness, if used correctly. Things which are CPU-bound, or which run synchronously, can still cause problems. Eg: calling Thread.Sleep on the UI thread will freeze...

Error on datagridview show the "format string can be only "G", "g", "X", "x", "F", "f", "D" or "d"."

26 Aug 2019 by OriginalGriff

At a guess - and a help vampire like yourself should know by now that without the relevant code that is all it can be - you are trying to set a format string on a enum field. When you do that, you can only use the formats it lists in the error message: Enum.ToString Method (System) | Microsoft...

@Foreach in view model object reference not set to an instance of an object

29 Aug 2019 by jimmson

You need to debug your code and find out which property is set to NULL. That is something nobody can do for you, as we don't have any access to your data. By last "interaction" I guess you meant iteration - so I suspect the last item in Model have some property set to NULL while you trying to...

Return image URL from WEB API

31 Aug 2019 by Thomas Daniels

I can't see the code you use to render the image, but I'm guessing that you create an img tag with as src the API response. D:\Images1\1.jpg is not a file path that will be recognized by your browser. You'll have to use this: file:///D:/Images1/1.jpg But note that if anyone accesses your MVC...

How to get last word after last slash from url ?

11 Sep 2019 by OriginalGriff

Use string.LastIndexOf and string.Substring: string lastBit = input.Substring(input.LastIndexOf('/'));

Interface over pure abstract class

9 Oct 2019 by OriginalGriff

In C#, a class can only derive from one base class - which can be abstract or concrete. If none is specified, the class derives directly from Object. MS reasoned that adding multiple inheritance added too much complexity to C# while providing too little benefit. This gives us a problem which is...

Interface over pure abstract class

9 Oct 2019 by CPallini

You may well use an abstract class instead of an interface. No one prevents you doing that and there possibly will be no harm to our wonderful world. However, as Griff already explained, in C# you cannot have two base classes, so, if your clss should provide, say, two different behaviours, then...

How do I fix incorrect syntax near the keyword 'desc'

21 Oct 2019 by Andy Lanng

Please, please read the following article: Understanding SQL Injection and Creating SQL Injection Proof ASP.NET Applications[^] I've corrected your code. Not 100% the best way but at least you won't get sql injection issues. private void btnUpdate_Click(object sender, EventArgs e) { ...

How do I fix incorrect syntax near the keyword 'desc'

21 Oct 2019 by Patrice T

SqlCommand cmdupdate = new SqlCommand("Update EmployeeDetails SET EmpName='" + txtEmpName.Text + "',EmpDesgn='" + txtEmpDegn.Text + "' ,EmpSalary='" + txtSalary.Text + "' where EmpId=" + txtempid.Text + "", con); Not a solution to your question, but another problem you have. Never build an SQL...

Recommendations for C# .NET MVC content management tools

6 Nov 2019 by MadMyche

How hard is it to use Google: Google: aspnet mvc cms open source[^]

Collect links from websearch

28 Nov 2019 by Maciej Los

At the first look, i see 3 errors: 1. //missing [s] in url addresss string urlAddressofW = "https://google.com/search?q=" + ADDING; 2. //Google replaces spaces [" "] with [+] ADDING = PureTexttitle.Replace(" ", "+"); 3. //missing [W] in receiveStream if (responseW.StatusCode ==...

I can't perform the save function

20 Dec 2019 by Richard Deeming

You can't nest forms in HTML. Change the target of your outer form, and remove the nested form. Also, remove the onClick method, which simply throws away the form and makes a GET request for the SaveData action. @using (Html.BeginForm("SaveData", "Access")) { @Html.AntiForgeryToken() ...

Unity, camera main null? Can somebody tell me where is my mistake?

20 Jan 2020 by OriginalGriff

If Camera.main is null, then just loading it into the debugger (And it doesn't matter if it's a dll or exe, the debugger will work fine) then just finding that out doesn't help you - the problem isn't in that code, it's in the code that executed some time before that code. If you get a null,...

Speed testing array vs. List<int>

9 Feb 2020 by Dave Kreskowiak

List will always be slower than an array. Your Button_Click method where most of the code is commented out doesn't do anything at all with an array or a list, unless you're testing the Length and Count properties. That's not really a good test. The reason List will always be slower is because...

Why C# doesn't provide multiple inheritance (interface only has signature)

18 Jul 2020 by OriginalGriff

Because the language designers decided not to allow it. There is a deeper reason for this in that it adds a lot of complexity with not a lot of "real" benefit, and the reason for that is called the Diamond Problem: Multiple inheritance -...

Difference between the define value?

16 Dec 2020 by Richard MacCutchan

Try the documentation: c const pointer - Google Search[^]

Difference between the define value?

17 Dec 2020 by CPallini

const int* var = &v; // var is a pointer to const int, it is initialized with v address int const* var = &v; // var is a pointer to const int, it is initialized with v address const int *const var = &v; // var is a const pointer to const int,...

How do I find the individual score for the given problem in C#

7 May 2021 by Richard MacCutchan

Your code can be simplified to the following: using System.IO; using System; using System.Collections.Generic; using System.Linq; class Program { static void Main() { Dictionary players = new...