C#

In C # versions earlier than Version 2.0,Delegate DeclarationThe only way is to useNaming Method. C #2.0 introducedAnonymous MethodIn C #3.0 and later versions,LambdaExpressionReplaces the anonymous method as the preferred method for writing Inline

In the previous series of articles, we can see the importance of custom menus. In the public account, menus are the first impression of users. We need to plan the content and layout of these menus. According to the menu definition, we can see that

LINQ provides two query syntaxes: query expression and query method syntax. This article is summarized in the following aspects. 1. A simple example containing two query syntaxes 2. query the expression Structure 3. query method-related operatorsA

The following method is found in actual development and can greatly simplify the code for calling the stored procedure. First, let's take a look at the general process of calling the stored procedure in C:1. Open the database connection

IEnumerable and IEnumerator do not understand these two interfaces until now. They do not understand them, but they always want to try to understand them. After all, they use less, so record them here. In the future, I hope that the big cows in the

If a programming language can solve the problem with a higher-order function, it means that the problem of data scope has become very prominent. When a function can be passed between a function as a parameter and a return value, the compiler uses

C # constraints of functional programming every time a generic type is used, you can use the where clause to add constraints to the generic type: static void OutputValue (T value) where T: listItem {Console. writeLine ("String list value: {0}",

Similar to C #'s definition of equality comparison norms, C # also defines sorting comparison norms to determine the order of one object and another. The sorting rules are as follows: IComparable interface (including the IComparable interface

After the first example of the design pattern, I once again realized that building a software is not only for function implementation, but also for "serving the people "! You do not need to use object-oriented methods to write data. To implement a

The async/await of. NET 4.5 is really a magic thing. It's so clever that I can't help but wonder about its implementation, but it's hard to get a glimpse of its path. Unexpectedly, I read this article Asynchronous Programming in C # using Iterators,

StartAutodesk. Revit. DB. Events;[Autodesk. Revit. Attributes. Transaction (Autodesk. Revit. Attributes. TransactionMode. Manual)][Autodesk. Revit. Attributes. Regeneration (Autodesk. Revit. Attributes. RegenerationOption. Manual)][Autodesk. Revit.

We use a series of blog posts to migrate XBF Library. My major reference is "My Learning career (Delphi)-08". 1. Create a Windows Application "File"-> "New"-> "Project" VcD4KPHA + Asn + CjxwPiAgICAgICAgICAgICAgICAgICAgMaOptLC/2rHqzOI8L3A +

I have previously written an article titled "C # Getting the local name, IP address, domain name, and physical location through network programming", which can be used to obtain the physical location of the Local Machine Based on the entered website

First, let's replace the principle. This is essential to understanding polymorphism. The Wikipedia provides the following definition of the Lishi replacement principle: Why does the Child class Replace the parent class without affecting the function

From today on, I will share the content in this book with you every day, and add my own understanding, hoping to help more blind programmers like me. Today, let's talk about object copy in C #. The so-called object copy is actually creating a copy

Zookeeper /// /// Split the string with commas (,)/// If a field contains a comma (Note: fields containing a comma must be referenced in double quotation marks), splice the fields./// Remove the double quotation marks of the

The scenario has recently adjusted the crawler's database architecture and needs to migrate data to MongoDB. We need to implement a new Dao generic class for MongoDB. Okay, let's get started, the problem arises when the delete operation is

1. Create a project 2. Add controls Select the "ArcGIS Windows Forms" section in the Toolkit, drag the "ToolbarControl" control into the form, and set the Dock in its properties to Top.Select "menu and toolbar StatusStrip" in the toolbox and

I believe many people have the need to parse HTML documents. For example, if we capture the page data of a website, the format is HTML. In the past, we used regular expressions for parsing, but we found some problems. It is not easy to parse HTML

Revit API allows you to find elements that pass through rays. The method is fixed mode, so there is nothing to say.Key code: [TransactionAttribute (Autodesk. Revit. Attributes. TransactionMode. Manual)]FindSupporting: IExternalCommand{Result Execute