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Follow @harshit_parshii The most common problem that we face these days is to create a common class and method that can be used across all the projects and codes. So today I will be sharing my code where you can see how to make and create a generic function without using entity framework for ado. net. The scenario is like you have an old software that uses stored procedure to return set of entities as a data-table, you do not want to re-write the back-end code as you are creating a web API in c# which needs to be delivered asap. You need to map these data tables to models as you might be using MV* pattern. So here we will be doing one to one mapping of model to data- table, and in similar fashion insert or update can also be done. So basically we are converting a data-table to list of strongly typed object model to do CRUD operations. So we have following things before hand. A helper class is referenced as the database(dbFactory) which executes ado. ne...

This comes as basic requirements by the majority of clients that they want a good user experience with some file uploaders/downloads for templates which are further used in your application. Just in case,  you are not using any new technologies, no spa, no JSON and no angularjs etc. Your app is made of asp.net because of security concerns of your firm and not so knowledgeable managers and the page refreshes every time the second you click a button and reload the entire content, but you do not want that as you know UX design ethics, so to overcome this problem you added an update panel and a nested update panel outside button to make it asynchronous, but what is this? You are not able to make button click event to get hit in code behind c#. What will you do? You will use update panel triggers like below. <asp:UpdatePanel ID= "UpdatePanel1" runat= "server" > <ContentTemplate> <fieldset style= "width:...

Session timeout is the worst nightmare of a developer especially if you do not have much experience in coding but senior enough to design an small application which becomes a mammoth in few months. So to all the mid-level experience guy, here is the key to success, do not make session variables in code behind, instead, create separate c# file either in app_code or in a separate project which you can call Utils as it will act like your utility file and create a public property in it which will call your DB whenever your session is null like following. So let's create a never ending session for the c#, Here is the scenario, suppose you have a user data-table coming from database which is on another project/DB and you have to get it through AD authentication or let's imagine it's a heavy DB call so calling, again and again, will reduce the app performance and that's why we use session which is again a non-performing thing but still better than DB chat. Here is your...

According to msdn , putting all the definition at one place:- Reflection provides objects (of type Type) that encapsulate assemblies, modules and types. A type represents type declarations: class types, interface types, array types, value types, enumeration types, type parameters, generic type definitions, and open or closed constructed generic types.  You can use reflection to dynamically create an instance of a type, bind the type to an existing object, or get the type from an existing object and invoke its methods or access its fields and properties. If you are using attributes in your code, Reflection enables you to access them. Below is the code example for it. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Reflection; namespace reflection {   class Program    {      static void Main( string [] args)        {        ...

An application that provides sending fax from faxmodem, connected to the computer, will be explained in the following post.  We can use Telephony Application Programming Interface (TAPI) and the Fax Service Extended Component Object Model (COM) API to send fax. The fax service is a Telephony Application Programming Interface (TAPI)-compliant system service that allows users on a network to send and receive faxes from their desktop applications. The service is available on computers that are running Windows 2000 and later. The fax service provides the following features: Transmitting faxes Receiving faxes Flexible routing of inbound faxes Outbound routing Outgoing fax priorities Archiving sent and received faxes Server and device configuration management Client use of server devices for sending and receiving faxes Event logging Activity logging Delivery receipts Security permissions The following Microsoft Visual Basic code example sends a fax. Note that...

Three Tier Architecture: Very Easy to understand, the three tier are: 1. Presentation layer 2. Business Layer 3. Database Layer Simple Example: Lets take example of a Songs and Artist. 1. DataAccess Layer Below is a class of Data Access Layer, that has some dummy/fudge data, we only write DataBase calling method in DataAccessLayer. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace DataBaseLayer {     public class DataAccessLayer     {         string [] ArtistName = { "Akon" , "Shakira" , "Michael_Jackson" };         string [] Shakira = { "Waka Waka" , "Addicted to you" , "Beautiful Liar" };         string [] Akon = { "Chammak Challo" , "Lonely" , "Dont Matter" };         string [] Michael_Jackson = { "Beat It" , "Danger...

An SQL injection attack consists of insertion or "injection" of an SQL query via the input data from the client to the application. Attackers potentially use SQL Injection to: -Logging into your applicatiob by Bypassing the authentication. -Gaining access to your sensitive information in the database. -Tampering or destroying data. There are two complementary and successful methods of mitigating SQL Injection attacks: -Parameterized queries using bound, typed parameters. -Careful use of parameterized stored procedures. So one common use of such queries is explained in the below example written in Dot Net, which uses Parameterized queries for the variables declared with initial @. And also you can avoid the error caused by Apostophe (') in the variable if you are updating a table. Like if you have a variable like O'Connor then you app will throw an error, which can be avoided by the use of Parameterized query. It is one of the best way to avoid h...

Follow @harshit_parshii HtmlTextWriter:-  The HtmlTextWriter class is used to render HTML 4.0 to desktop browsers. The HtmlTextWriter is also the base class for all markup writers in theSystem.Web.UI namespace. It Writes markup characters and text to an ASP.NET server control output stream. This class provides formatting capabilities that ASP.NET server controls use when rendering markup to clients. It allows you to generate a list of HTML elements, such as <div> elements. You could use StringBuilder to create the HTML, but HtmlTextWriter is sometimes better—fewer errors are likely. Below is sample code: protected void Page_Load(object sender, EventArgs e) {     TextBox txtBox = new TextBox();     // Initialize StringWriter instance.     StringWriter stringWriter = new StringWriter();     // Put HtmlTextWriter in using block because it needs to call Dispose.     using(HtmlTextWriter writer ...

Make a new project in Visual Studio (Console App) Add a new .cs file named as MySetting.cs, in that file copy paste the following code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 using System ; using System.Collections.Generic ; using System.Linq ; using System.Text ;...

Synchronous threading will execute each thread/command in the order they have been created/started Suppose there are 4 threads A, B, C, D Application Starts at 10:00:00 time: 10:00:00: -> Start thread A (will run for 5 seconds) time: 10:00:05: -> Start thread B (will run for 10 seconds) time: 10:00:15: -> Start Thread B1 (will run for 5 seconds) time: 10:00:20: -> Start thread C (will run for 15 seconds) end application: total run time will be 35 seconds Asynchronous threading will run the threads at the same time/ parallel processing, or we can say it will take the thread that is available at the earliest. Application Starts at 10:00:00 time: 10:00:00: -> Start thread A (will run for 5 seconds) / Start thread B (will run for 10 seconds) / Start thread C (will run for 15 seconds) time: 10:00:10: -> Start Thread B1 (will run for 5 seconds) end application: total run-time will be 15 seconds (because the longest run-time is thread C) So Async Threadi...