C#

We often encounter some special requirements in projects. For example, the drop-down box is checked, and the query conditions are spliced according to the option in the drop-down box.    After you see this picture, you will surely say that this is

Applications on the handheld terminal need to connect to the server in real time, and the handheld device automatically jumps to sleep state after 5 minutes by default, although you can set the handheld device to never sleep in the advanced options

In the coming new Windows Runtime, it is more fundamental to determine that no API will run for more than 50 ms. The operation that takes a longer time will be replaced by the 'kick off this operation' API, and will be returned immediately without

Recently, due to the customer's new requirements, we need to import data into PDF format. I have read a lot on the Internet. Although it is not comprehensive, I still want to thank them, I have sorted out all the code they have written and posted it

Problem Background: Use the Sort method to Sort Product objects.The following are two signatures of the Sort method:[Csharp]Public void Sort (Comparison comparison );Public void Sort (IComparer comparer ); One is the object that receives the

[Csharp]/*************************************** **************************** Program name: Mega_ADK ADC** Parameter count: None** Function: Send the voltage value (mv) collected by AD through the serial port)** Note: The target board is Maga adk

/* (Start of program header annotation)* Copyright and version Declaration of the program* Copyright (c) 2011, a student from the computer College of Yantai University* All rights reserved.* File name: Create a Console application-enter a character

In C # programming, we sometimes need to determine whether a string is a numeric string. We can implement this using the following two methods.[Method 1]: Use the try {} catch {} statement.We can try to convert string variables of the string type to

[Csharp] class Program {static void Main (string [] args) {Console. writeLine ("Please input your STRING:"); string a = Console. readLine (); char c; char find_c; Console. writeLine ("Please input the CHARACTER in your string:"); find_c = Convert.

I found a lot of information on the Internet and did not find much support to return to the current reading position. I used the C # callback function. Then, to make it easy to use it, I simply wrapped up nothing technical, so that Daniel flew over

  Intended audience: entry level, old bird drifting As we all know, QQ has an automatic dock function, that is, "up, left, right". When you drag the form to the edge of the screen and move the mouse away, it automatically scales, then only a small

  First, let's take a look at the incompatibility between irregular forms and the WindowsFormsHost control in WPF. The solution provided on the Internet cannot meet all the conditions and has specific conditions, for example, the solution to

Using System;Using System. Threading;Using System. Text; Namespace ControlThread{Class Program{Private static void DisplayMessage (){ // Display a message repeatedly on the console.While (true){ Try{ Console. WriteLine ("{0}: The second thread is

It is sometimes necessary to obtain the exact time in the program. It is often used to test the performance of a program and use accurate time timing. Or in other cases, the exact time is required. This requires a function QueryPerformanceCounter ().

My ORM has been using reflection to dynamically generate Entity. Recently I tried other methods to generate Entity classes to improve efficiency. The materials we usually see show that the Expression speed is close to that of Emit, and the

Method 1: Disable USB by modifying the Registry   Principle: you only need to change the Start value in the HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ services \ USBSTOR path of the Registry to 4 to disable USB (default: 3, that is, allow USB

C # Learning 9: class and Object Class and constructor, create a circle class, the default radius is 0, count statistics have several circles [Csharp]// Circle. csUsing System;Using System. Collections. Generic;Using System. Linq;Using System.

/* (Start of program header annotation)* Copyright and version Declaration of the program* Copyright (c) 2011, a student from the computer College of Yantai University* All rights reserved.* File name: the rule for the number of columns is as

OleDbConnection, OracleConnection, or SqlConnection directly executes SQL statements. The current method of connecting to execute SQL statements is quite different. Next let's take a look at the simple addition, deletion, modification, and query

The ImagePrinter class is a encapsulated printing class. before printing, you must call the public bool PrinterReady (Bitmap printContent) method to input an image file. Then, you can call PrintView () to print the image and call PrintOut () you can