C++

Visual C # is the next-generation program development language introduced by Microsoft. He not only has the powerful features of Visual C + +, but also has the simplicity of Visual Basic, easy to start features. So once launched, it received a large

How to control the relationship between multiple threads, without conflict and repetition, requires the use of mutually exclusive objects, namely: The Mutex class in the System.Threading namespace. We can think of a mutex as a taxi and a passenger

In contrast to imperative programming, a statement-type program can describe the behavior of a software in a simpler, clearer way. Declaration programming means defining the behavior of a program with a declaration, rather than writing some

As you already know, the so-called read-only attribute means that the caller cannot modify this property. Unfortunately, this is not always valid. If you create an attribute that returns a reference type, the caller can access the public members of

Value types are containers of data that do not have much of a nature. On the other hand, it means. NET Framework is designed to be a single inherited reference type, System.Object, as the root object exists throughout the inheritance relationship.

Using the #if/#endif block can generate different compilations (results) on the same source code, most of the debug and release two versions. But they are by no means the tools we like to use. Because the #if/#endif很容易 is abused, the code that is

First look at the extension of ScottGu in: Call Example 1: Call Example 2: Original address: New "Orcas" Language feature:extension Methods (http://weblogs.asp.net/scottgu/archive/2007/03/13/

Visual C # Writing network applications typically use the two important network namespace "System.Net" and "System.Net.Sockets" that are available in the. Net FrameWork SDK. In fact, Visual C # can also implement many useful network functions by

Packagecom.jrkui.example.excel; import Org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import Org.eclipse.swt.ole.win32.OLE; import org.eclipse.swt.ole.win32.OleAutomation; import Org.eclipse.swt.ole.win32.OleClientSite; import

C # object serialization and deserialization, as shown in the following code example: Using System; Using System.Text; Using System.Collections.Generic; Using System.IO; Using System.Runtime.Serialization.Formatters.Binary; Class

implicit type variable (implicitly typed local variables) Code written like the following is an implicit type variable var i = 5;var str = "Csharp"var numbers = new int[]{1,2,3};var orders = new System.Collections.Hashtable ();var

In the following example, 3 Join methods are implemented to connect two DataTable, equivalent to the SQL inner join method, and return all columns of the DataTable.If the DataColumn in the two DataTable is duplicated, the second is set to Columnname+

The benefit of visual use of the MVC (Model-view-control) pattern in our development projects is that it can completely reduce the interaction between the business layer and the application presentation layer. In addition, we will have a completely

Print IntroductionSome time ago for customers to develop a set of printer software, in C # to call the printer did some research. --------------------------------------------- ProblemThe. Net Framework 1.1 provides us with a PrinterSettings class

At the time of last year's PDC2005, when c#2.0 (C # Whidbey) was released, Microsoft also showed some of their plans on C # 3.0. Referring to a range of new language features such as language-Integrated query (LINQ), Redmond also introduces a new

Transformation private void Buttonctof_click (object sender, System.EventArgs e){Double c=0,f;try//the input error with the thrown exception to replace the regular.{c=convert.todouble (textBox1.Text.ToString ());} Convert conversion function, easy

If you do not use the MDI to implement a main form to open more than one subform, To open one (only one) other form (subform) from one form (the main form) Parent form: MainForm public partial class Mainform:form { ............ private void Menuitem1

access| Data | database | compression Introduced The following C # code can be used to compress and repair an Access database, whether it's a simple ". mdb" or a ". MDW" network shared database, and the process and the tools-database

ado| Data | statement 1, the use of wildcard characters In ADO. NET allows you to use wildcard characters for data queries. As in the following statement query table EmployeeID All data starting with aSelect employeeid,employname,tel,salary ...

One, hash table (Hashtable) Brief In the. NET framework, Hashtable is a container provided by the System.Collections namespace for handling and performing key-value pairs that resemble Key/value, where key is often used for quick lookup and key is