asp.net C # generate Drop-down list Tree Implementation Code _ Practical Tips

Effect Chart: Code: Copy Code code as follows: Using System.Data; Using System.Web.UI.WebControls; Generate a Drop-down list tree from a DataTable public class Dropdownlisthelp { private string gridline; Private DataTable DT;

asp.net transfer of large amounts of data between pages (datasheet) Recommended method _ Practical skills

Can the data be passed between two different sites? Now I want to send the data of site A to the B site .... Recommended use of cache(1) Does not affect the performance of the program is not very likely, you have said, is a large number of data.

asp.net url after delivery of the address bar garbled (more than two Chinese characters) _ Practical skills

Encoding good URL is correct, can be uploaded to another page will be wrong, in the address bar has been garbled1. Set up Web.config file Copy Code code as follows: 2.asp.net to asp.net page values For delivery String

asp.net C # acquisition requires login page implementation principle and code _ Practical skills

First, explain: Code snippets are retrieved from the network and then modified by themselves. I think the good things should be shared. Implementation Principle: When we collect the page, if the collected site needs to log in to collect. Whether

Asp. NET URL Filter Implementation Code _ Practical skills

The following is the definition of the class. Copy Code code as follows: Using System; Using System.Web; Using System.Web.SessionState; Namespace QTJZ { public class Filters:ihttpmodule, IRequiresSessionState { public void

asp.net GridView Implementation schedule display (dynamic merged cells) Implementation steps _ Practical skills

Gridview,asp. NET, I will use this control to implement the display of the curriculum. First of all, what is the difference between the display of the timetable and the display of the normal record? The common records mentioned here refer to the

Using ASP.net implementation to generate non-duplicate order number _ Practical skills

Copy Code code as follows: #region Generate Document Number Generate Document Number public static string Getformcode (FormType pfromtype) { String formcode = ""; Switch (pfromtype) { Case Formtype.caigou: { FormCode = "CG";

Asp. NET Performance Optimization Eight recommendations _ Practical tips

1, Database access performance optimization A, minimize database connectivity and make the most of each database connection: the creation, opening, and closing of the connection is overhead. You can use connection pooling B, reasonable use of

asp.net Grid export Excel Implementation Program code _ Practical Skills

1. aspx background code output content type information Copy Code code as follows: Response.clearcontent (); Response.AddHeader ("Content-disposition", "attachment; Filename=myexcelfile.xls "); Response.ContentType = "Application/

asp.net the GridView and DataGrid in the same column merge implementation code _ Practical Tips

(i) Ordinary columns Copy Code code as follows: Merge of the GridView column (normal column, no template column included) Note: 1. The GridView groups and sorts when binding to allow the same rows to be grouped together 2. The

code for displaying mathematical symbols in asp.net Web pages-Practical tips

Effect Chart: The prerequisite is that your Web page is supported Utf-8, as in the Web.config setting as follows: Copy Code code as follows: . aspx: Copy Code code as follows:

asp.net can not select multiple items in the DropDownList reason analysis and solution _ practical skills

Sample code: Copy Code code as follows: BULKSTOCKBLL BLL = new BULKSTOCKBLL (); DataSet ds = BLL. Getbulkstock (); This.ddl_BulkStock.DataTextField = "Name"; This.ddl_BulkStock.DataValueField = "ID";

Asp. NET access to the path "xxxxx" solution Summary _ Practical Tips

Under Windows 2003, an error occurred while running the Web application: The server was unable to process the request,--> denied access to the path "C:/temp/mytest.txt" Note: An unhandled exception occurred during the execution of the current WEB

ASP.net through session 0 Isolation (i) _ Practical skills

Windows Services perform a variety of tasks in the background, supporting our day-to-day desktop operations. Sometimes it may be necessary for the service to interact with the user for information or interface, which is no problem in the XP era, but

asp.net post form save page state and output source code implementation Method _ Practical skills

HTML page Copy Code code as follows: validaterequest= "False"%> Extract HTML source after submission (keep state) User Control Copy Code code as follows: User

asp.net mvc-controllerl article controllerdescriptor_ practical skills

Now let's look at the definition of the Actioninvoker attribute: Copy Code code as follows: Public Iactioninvoker Actioninvoker { get { if (_actioninvoker = = null) { _actioninvoker = Createactioninvoker (); } return

asp.net file breakpoint Extension Implementation Code _ Practical skills

Here I add an HTTP header to the output stream through the AddHeader method in the response class. In the HTTP header, it consists of the header and the body information. The two lines are separated by a blank line. This uses a range segment in the

ASP.net calculates how many times each number appears in a string of numbers _ Practical tips

Next, the string is split, each character is inserted into a table variable, and finally grouped by using GROUP by. Copy Code code as follows: Calnumofchtinstr SET ANSI_NULLS on Go SET QUOTED_IDENTIFIER ON Go -- ====================

asp.net calculating the number of occurrences of strings in a string _ Practical tips

To achieve the first step, you need to split the string into an array, and the function you want to use is split (): Copy Code code as follows: string[] arr = s.split (', '); The second step is to instantiate with dictionary (

asp.net list all documents under a folder, including files in subdirectories _ Practical tips

Copy code code as follows: protected void Page_Load (object sender, EventArgs e) { ///Specify Destination Folder String directory = @ "C:\Windows\Microsoft.NET\Framework\v3.5"; Iterationfile (directory); }

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