.Net Core

If you use FindControl ("id") to search for a control, the return value is Null. findcontrolnull The function of searching for the page control by string ID and assigning values to the page control encountered the problem that the returned value of

Save SQL data to an Excel file. Public string ExportExcel (DataSet ds, string saveFileName) {try {if (ds = null) return "database is empty"; bool fileSaved = false; Microsoft. office. interop. excel. application xlApp = new Microsoft. office.

ASP. NET MVC5 use AjaxHelp and mvc5ajaxhelp By default, Visual Studio 2013 creates an ASP. NET MVC5 project that does not contain jquery. unobtrusive-ajax.js and needs to be manually added. Click the "Tools" menu in Visual Studio 2013, select

Usage of DWZ in APS. NET WebForm (1), dwzwebform1. Preface In recent project development, the front-end framework DWZ was used. DWZ is a relatively good background management interface framework, but the officially published documents are really

Detailed configuration of Unity IOC injection (MVC, WebApi) and iocwebapi I always wanted to write an article about the detailed configuration of unity. First, we introduced unity. Unity is a lightweight IOC framework officially recommended by

Asp.net data paging method, asp.net data Paging /// /// data paging method /// /// current page /// displayed quantity per page // total data /// link, for example, list. aspx? Id = 1234 // public static string GetPage (int PageIndex,

How to add computing columns to the DATAGRID of SL ?, Sldatagrid For example, the entity class in my database corresponds to the entity class in EF Class { Public int F1; Public int F2; } Domainservice on the server I used wcf ria on the SL end and

C # sogou map API application Summary (2 ), Add the functional modules you want on the map The Code is as follows:1 var map; 2 window. onload = function () {3 var myOptions = {4 mapControl: false, // disable the default control 5 mapTypeId: sogou.

C # How to Implement shortcuts, This article describes three methods to achieve C # button shortcuts, such as Alt + * (button shortcut), Ctrl + *, and other key combinations. I,C # one of the buttons: Alt + * (button shortcut) When you set the Text

Login permission verification Session and Cookie usage and BasePage class usage, cookiebasepage Recently, when I was working on an ASP. NET project, I came into contact with the logon permission module. I summarized all the knowledge and methods

Use the yield keyword to implement foreach traversal for a custom set. Generally, when we create a custom set, we can only implement the IEnumerable interface (which may also implement the IEnumerator Interface) to support foreach traversal) However,

ASP. NET Common permission verification component implementation, asp.net permission Sofa (SF) General permission verification component Opening This article introduces the implementation code of general permission verification, which includes

ASP. NET Common permission component implementation 1. asp.net permission component General permission verification component for sofa (SF) Opening The previous article mentioned the design idea of general permissions. According to the design idea,

C # sogou map API application summary, Map Initialization1. Add the reference map API file: 2. Website initialization loading event: window. onload = function () {var map = new sogou. maps. Map (document. getElementById ("map_canvas "),{});}Create a

Discuz! NT 3.5.2 official and Asp.net Website member information integration, 3.5.2 member information Discuz! NT provides many external interfaces to facilitate integration with other websites. After my own tests, I think the open interfaces are

ASP. NET 6 methods for obtaining IP addresses (reproduced in LanceZhang's Tech Blog), asp. netlancezhang Server: 1 // method 2 HttpContext. current. request. userHostAddress; 3 4 // method 2 5 HttpContext. current. request. serverVariables

Can an abstract class have Constructors? We know that abstract classes cannot be instantiated. But can an abstract class have constructor? The answer is yes. The constructor of an abstract class is used to initialize some fields of an abstract class,

Asp.net traverses all subfolders in the folder and binds them to the gridview. asp. netgridview Traverse all subfolders in the folder, traverse all keys and values in a node of the configuration file, and bind them to the GridView.C # code

AspNetPager comparison of true and false pages It has been a while since learning BS. BS is designed for Web pages, including the data retrieved from the database and displayed on the page. Previously, in CS, table controls such as GridView were

Asp.net uses the MVC4 framework to export data to an Excel table based on NPOI, mvc4npoi NPOI is the. NET version of the POI project. POI is an open-source Java project for reading and writing Microsoft OLE2 component documents such as Excel and