Skip to main content

Prevent Duplicate(Double) Inserts when Page is refreshed in Asp.net(C#).

In this article I will explain the most common issue faced by many ASP.Net Developers i.e. Prevent Duplicate Insertion of Record on Page Refresh in ASP.Net. Duplicate Inserts and Double updates occur when a page is refreshed after an insert or update statement of SQL Server is executed and we get a following popup from the browser.


After insert or update statement is executed you can redirect the user to the same page.
Response.Redirect(Request.Url.AbsoluteUri);

Comments

Popular posts from this blog

How To Implement NLog With WebAPI In Asp.Net(C#).

What is NLog? NLog is a flexible and free logging platform for various .NET platforms, including .NET standard. NLog is easy to apply and it includes several targets (database, file, event viewer). Which platform support it? .NET Framework 3.5, 4, 4.5, 4.6 & 4.7 .NET Framework 4 client profile Xamarin Android Xamarin iOS Windows Phone 8 Silver light 4 and 5 Mono 4 ASP.NET 4 (NLog.Web package) ASP.NET Core (NLog.Web.AspNetCore package) .NET Core (NLog.Extensions.Logging package) .NET Standard 1.x - NLog 4.5 .NET Standard 2.x - NLog 4.5 UWP - NLog 4.5 There are several log levels. Fatal : Something terrible occurred; the application is going down  Error : Something fizzled; the application might possibly proceed Warn : Something surprising; the application will proceed  Info : Normal conduct like mail sent, client refreshed profile and so on.  Debug : For troubleshooting; the executed question, the client confirmed, ...

Generating serial numbers and keys in Asp.net(C#).

here we are using GUID for generate serial numbers and GUID is always unique. Example format: XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX. Guid SerialKeyGuid = Guid.NewGuid(); string AccessKey = SerialKeyGuid.ToString("N"); string AccessKeyLength = AccessKey.Substring(0, 28).ToUpper(); char[] serialArray = AccessKeyLength.ToCharArray(); string SerialNumber = ""; int P = 0; for (int B = 0; B < 28; B++) {                 for (P = B; P < 4 + B; P++)                 {                     SerialNumber += serialArray[P];                 }                 if (P == 28)                 {                     break;                 }         ...