.Net Core

Copy codeThe Code is as follows:// Namespace involvedUsing System;Using System. Collections;Using System. ComponentModel;Using System. Data;Using System. Data. SqlClient;Using System. Drawing;Using System. Drawing. Drawing2D;Using System. Drawing.

Method 1: first query all records and then query the records after the logical layer is converted to the first letter of the pinyin alphabet. It is obvious that dummies will do this.Method 2: Add a field to the table to be searched to store the

In a recent project, the server is deployed on a special data center. due to security concerns, we cannot provide FTP services to our developers. Therefore, we have to take a look at each version update, his data center is far away, so I have been

This page address: Request. URL;Last page address:Copy codeThe Code is as follows:Request. UrlReferrerRequest. ServerViables ["http_referer"]Request. RawUrlRequest. RawUrl. QueryAndPathSystem. IO. Path. GetFileName (Request. FilePath. ToString ())

Copy codeThe Code is as follows:DataTable DT = new DataTable ();DT. Columns. Add ("Name ");DT. Columns. Add ("Sex ");DataRow dr = DT. NewRow ();Dr [0] = "Kenny ";Dr [1] = "male ";DT. Rows. Add (dr ); A: In the column editing of the DataGridView

Two parameters are supported by default:Width, default value: 250pxLink URLThe corresponding Source code is:Copy codeThe Code is as follows:Var params = parseQuery (queryString );If (params ['width'] === undefined) {params ['width'] = 250 };If

In the server security section, I wrote an article titled cracking common SQL Injection prevention methods. Some common anti-injection methods do not filter cookie data, this leaves hackers with an opportunity. Of course, this code also filters the

Copy codeThe Code is as follows:Using System;Using System. Data;Using System. Configuration;Using System. Web;Using System. Web. Security;Using System. Web. UI;Using System. Web. UI. WebControls;Using System. Web. UI. WebControls. WebParts;Using

Front-end code:CodeCopy codeThe Code is as follows: · "'> LastPageText = "last page" NextPageText = "next page" OnPageChanged = "AspNetPager1_PageChanged"PrevPageText = "Previous Page" Width = "100%" AlwaysShow = "true" CssClass = "anpager">

Global. asaxC # codeCopy codeThe Code is as follows:

Solution ):Copy codeThe Code is as follows:/// /// Merge rows with the same information in a column in the GridView (cell)/// /// GridView /// column number Public static void GroupRows (GridView GridView1, int cellNum){Int I = 0, rowSpanNum =

Copy codeThe Code is as follows:Using System;Using System. Data;Using System. Configuration;Using System. Web;Using System. Web. Security;Using System. Web. UI;Using System. Web. UI. HtmlControls;Using System. Web. UI. WebControls;Using System. Web.

Copy codeThe Code is as follows:Public string GetRandomColor (){Random RandomNum_First = new Random (int) DateTime. Now. Ticks );// There is nothing to say about the random number of C #.System. Threading. Thread. Sleep (RandomNum_First.Next (50

Use the command line tool aspnet_regiis.exeYou can also use the aspnet_regiis.exe command line tool to encrypt and decrypt the Web. config file configuration section. You can find this tool in the "% WINDOWSDIR % \ Microsoft. Net \ Framework \

Method 1: Use the XML Control XML method 1 Method 2: Use DOM technology method 2 of XML reading Method 3: Use a DataSet object XML reading method 3 Method 4: Read data by text XML reading method 4

. NET Framework provides three types of Timer for us:Server Timer (System. Timers. Timer), Thread Timer (System. Threading. Timer), and Windows Timer (System. Windows. Forms. Timer ).The Windows Timer is message-based and single-threaded, like the

Isn't the using and as operators in c # used by many people? Don't even know?In fact, these two operators are very useful in small places.1. usingAccording to the msdn explanationThe using statement defines a range where objects are processed at the

In previous Web applications, uploading files was a very troublesome task. Now, with. NET, File Upload becomes easy. The following example implements the Multifile upload function. You can dynamically add input forms. There is no limit on the number

Use XMLHTTP to download an object. Like the previous method, add reference-COM-Microsoft Xml 3.0 first, and then write at the beginning of the Code:Using MSXML2;The following is the main code:Private void Page_Load (object sender, System. EventArgs

1. There are two ways to connect SQL Server to Visual Studio:(1) local computer connection;Copy codeThe Code is as follows:String s = "Data Source = computer name; initial Catalog = database name; integrated Security = True ";(2) windows