C#

// Determine whether the input is public static bool HasChinese (string content) {// determine whether the input is a Chinese string regexstr = @ "[\ u4e00-\ u9fa5]"; if (Regex. isMatch (content, regexstr) {Log ("HasChinese"); return true ;}else

NPOI official website http://npoi.codeplex.com/load NPOI. DLL, reference these two namespaces Using NPOI. HSSF. UserModel;Using NPOI. SS. UserModel; # Region NPOI datagridatagriexport EXCEL /// // NPOI DataGridView export EXCEL /// /// Save the

Back-to-text: A symmetric string, such as ABCBA Train of Thought: based on the principles of Team: first-in-first-out and stack: first-in-first-out, compare whether the characters of team-out and stack-out are equal. If they are equal, they are

1,Common promotion models The promotion management system is used in many places. It is often reflected that many small and medium-sized enterprises have their own promotional activities when they go to the supermarket. To engage in promotional

The main updates of DataUML 1.3 (download) are as follows:   1. added the query analyzer function; 2. added the function of enabling historical file records; 3. Modify the query object function; 4. added the Display object length function; 5. added

Determines whether a column in the DataTable contains a value. /// /// determine whether the DataTable contains a certain value // /// DataTable / // column name // value /// public Boolean IsColumnIncludeData (DataTable dt, string

1. Delegation statement  2. Delegated entry instance   Namespace ConsoleApplication1 {public delegate void methodDelegate (string str); class Program {static void Main (string [] args) {Student student = new Student (); teacher teacher = new

FrmMain. cs has a problem. 1. int I = 0 is set to a global constant and is not at the top of the class. It is difficult to find out if a problem occurs. I is a common temporary variable. Setting global variables may cause confusion. 2. defined

This article has been updated to http://www.cnblogs.com/aehyok/p/3624579.html. This article mainly records the following content: 29. We recommend that you differentiate IEnumerable and IQueryable Suggestion 30. Use LINQ to replace the comparator

Contains a lot of information. You have written a class that contains fields, attributes, and methods. Compilation stores the information in the Assembly. For the time being, call this information. It is certain that the program contains "(metadata),

Translation is limited to the following languages: 　　 Explanation: the previous several languages that can be translated are provided by the system and not created by the bloggers. The above code gets all supported language translation functions

Like many beginners, when I first came into contact with C #, I was confused. After learning for a long time, I was confused about some basic names. What is C #? What is. net? What is visual studio? What is the relationship between them? Let's start

I am using C # As a small game and need to use animation. The problem solved last time was the flash problem. I used double buffering technology. I thought there would be no problem. Later, when all the images were drawn, the problem still occurred.

Attribute Description Nodes Obtains the set of Tree nodes allocated to the Tree View control. PathSeparator Obtains or sets the delimiter string used by the tree node path. SelesctedNode Obtains or sets the

1 Preface For a long time, the majority of programmers have been arguing over whether to use Client/Server or Browser/Server structures. Among these arguments, C/S structures have poor program maintainability and difficult arrangement, the upgrade

The OO idea has been widely used in software development projects. The most important feature is inheritance. Recently, I briefly reviewed the inheritance feature in C, the keywords that need to be used, including some key points, are specially

RefWe usually pass the value to the method. the method obtains a copy of these values, and then uses these copies. After the method is run, these copies will be discarded, and the original values will not be affected. in addition, we have other

MouseIsDown = Rectangle MouseRect = p. x-= p. y-=. rectangleToScreen (Rectangle (, = Rectangle (StartPoint. x, StartPoint. y, button1_Click (barkPictureBox_MouseUp (=== (MouseRect. X = | MouseRect. Y = | MouseRect. width = | MouseRect. height =) =

Reference namespace Word = Excel = PowerPoint = Microsoft.Office.Interop.PowerPoint;Word file reading text = Word.ApplicationClass app = Word.Document doc = readOnly =

In the development process, we usually encapsulate common methods in a helper class to improve reusability. Since. net3.5 and later,. net has supported extension for classes using the this keyword. Currently, only static methods can be extended,