C#

Select Folder FolderBrowserDialog dia = new FolderBrowserDialog (); if (DIA. ShowDialog () = = System.Windows.Forms.DialogResult.OK) { string filePath = Dia.  SelectedPath; Directory.Exists (FilePath); //Determine if a folder exists

C # optional and named parameters, Optional Parameter Static void test1 () {func1 ("A"); func1 ("B", 30); Console. readKey ();} static void func1 (string name, int age = 20) {Console. writeLine ("Name:" + name + "\ t Age:" + age );} Name

Enumeration usage Summary Use of enumeration in C # 1. In principle, enumeration is used in all cases. constants are not used unless constants are one, not a group. 2. If you want to modify the code after adding or removing constants in a group of

JSON serialization and deserialization of DotNet and dotnetjson serialization JSON (JavaScript Object Notation) JavaScript Object Notation, which is a text-based lightweight data exchange format independent of languages. In the current communication,

In a C # solution, what are stored in various folders, In VS2015, the "Build" process is as follows: Source Code (. cs)-> Compile-> Object File (intermediate files)-> Linker-> Debug Version(.exe) and Release Version(.exe)   Obj Folder: TheobjFolder

Unsignedassemblies, unsignedassemblies The access modifier internal in C # enables mutual access between types in the same assembly. However, there is sometimes such a requirement that the type of an assembly can be accessed by some external

Value Type, reference type, stack, heap, ref, out, refoutCollect on the internet... C # value type, reference type, stack, heap, ref, out The C # type system can be divided into two types: Value Type and reference type. Every C # programmer

The Quartz. NET job scheduling framework is encapsulated to implement the LOG writing function of pseudo AOP. quartz. netaop Quartz. NET is a very powerful job scheduling framework, suitable for various scheduled business processing, similar to the

Summary of the methods for storing the content of text files in DataSet. Many projects perform operations on files, such as uploading and downloading files, File compression, decompression, and other IO operations. In. NET projects, DataSet and

C # string method, 1 static void Main (string [] args) 2 {3 StrMethod (); 4} 5 6 public static void StrMethod () 7 {8 string myString = "brambling "; 9 string myNewStrUP = string. empty; 10 string myNewStrLow = string. empty; 11 string myStringL =

C # advanced series -- WebApi interface parameters are no longer confused: detailed parameter passing, When I look at this article, I am confused: the parameter in WebApi is added with [FromBody]. If I don't know why, I am Baidu. I have seen the

C # Set file permissions, During development, we often use IO operations, such as creating and deleting files. There are also many such requirements in the project. We often encode these operations, but set the file permissions. Such operations may

Iot framework ServerSuperIO tutorial-4. For example, you can develop a device driver that supports both serial and network communication. Appendix: support for Windows 10 IOT and win10iot in the future 1. C # Introduction to cross-platform Iot

Analysis of HuffmanTree and Algorithm Implementation in C, Both in our development projects and in our daily life, there will be a lot of File compression involved. When talking about File compression, some people may want to ask how File

Share details about the big data batch import methods and programming methods of MSSQL, MySql, and Oracle.1: MSSQLSQL Syntax: BULK INSERT [ database_name . [ schema_name ] . | schema_name . ] [ table_name | view_name ] FROM 'data_file'

Why is Lock used ?, Lock usage, When multiple processes share data, lock the code of a program (when the shared data is rewritten ). Let's take a look at this Code: namespace ThreadTest{ class Program { static bool done; static

XAF: It is very specific and practical-to deal with three small problems, xaf The following content is completed in the old template style of the web version. 1. print the report in the Details View of the editing status. In some cases, you need to

About getting Parameters When it comes to parameter acquisition, you will surely say, what is the fun! Today, let's talk about the Request ["parameter name"]. You are dealing with him every day! Long ago, a manager told me that today you are

. Net language APP development platform-Smobiler Learning Log: Enable mobile phones to call cameras for scanning.At the beginning, scycler is a development platform that uses the. Net language to develop apps in the VS environment. It may be more

Summary of common methods for parsing exceptions and C # handling exceptions, In. NET, an exception occurs when a Member does not complete the action that can be completed by its name claim. In an exception mechanism, exceptions are irrelevant to