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Multiple identity columns specified for table 'States'. Only one identity column per table is allowed

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This post addresses the error that we see when executing Update-Database command inside Package Manager Console. I am going to talk about two continuous error appears and fix is very simple, just read this blog.
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Custom Code First Conventions - EF 6 New Feature

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In this blog post you will learn a new feature ‘Custom Code First Conventions’ introduced with Entity Framework 6. This is 'Code First' only improvement. EF 6 comes with number of cool new features and improvements, so I decided to write blog posts and cover some of the new features.
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Entity Framework 6: New Features

In this blog post you will see the list of cool things available with Entity Framework 6. Entity Framework is Microsoft's recommended data access technology for new applications. EF team recently announced the release of EF6 and it is now available for download on NuGet . EF6 comes with number of features and performance improvements, I have listed some of them below and I will cover most of the cool things of EF6 in coming blog posts.
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Area in MVC 5 with example - step by step

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In this post you will learn how to create Area in MVC 5, because creating Area in MVC 4 was quite different. In MVC 5 (Visual Studio 2013), Area option can be found under ‘Add Scaffold’ dialog. In this post, I will take you through step by step to setup and running Area in MVC 5. "Area in MVC 4" is available here.
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Debugging MVC with Route Debugger Tool

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In this blog let's talk about a really cool tool for MVC developers ‘Route Debugger’. Sometimes a bug in your route can break application because it invokes either an incorrect controller or action. So, do not worry just install this tool in the application and it will make your route debugging easier like never before.
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Category and Sub Category in single Drop Down List (DDL) in MVC

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In this article you will learn how to create a Drop Down List in MVC that can display States and its associated Districts in a single Drop Down List. You will learn this step by step.
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Hands on ASP.NET GridView - eBook by me

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I would like to take this opportunity to let you know that C# Corner (MindCracker Community) have combined my 25 Articles on GridView series and published as an eBook with the title "Hands on ASP.NET GridView".
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Popular posts from this blog

Migrating database from ASP.NET Identity to ASP.NET Core Identity

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As you know ASP.NET Core Identity (table structure) is different from what we had earlier in ASP.NET Identity. Actually the identity system which we have today with .NET Core is very mature and continuously evolved be it ASP.NET Membership, ASP.NET Identity 1, ASP.NET Identity 2 and now ASP.NET Core Identity. Recently I had to migrate few application to ASP.NET Core and similar its identity database. Because the table schema is changed, i had to re-think and create migration script which I would like to share with you today. It is very simple and easy, just three step and I had everything ready: STEP 1 : Change name of existing tables STEP 2 : Create ASP.NET Core Identity tables STEP 3 : Migrate data from old tables (ASP.NET Identity) to new tables (ASP.NET Core Identity) Script:  https://gist.github.com/itorian/c699e8534b392a6c726ec66c48100072 You should also watch my video, where I demoed migration.
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Customize User's Profile in ASP.NET Identity System

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Note: You should read this post instead, I found below walkthrough will not work on ASP.NET Identity 2. I will re-work on this post soon. In this post you will learn how to customize User’s Profile and add some more fields like FirstName, LastName, EmailID etc with ASP.NET Identity System. In my last post I listed some of the great new features introduced with Identity system .
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Lambda two tables and three tables inner join code samples

In this blog post you will learn inner join using lambda queries. There will be two samples, in first sample you will see how you can join two tables and in second sample you will see how you can extend even further to join three tables and so on. I will sample in-memory data, but the same implementation will work with IQueryable (lazy query) too. Here's the code snippet:- namespace ConsoleApp1 {     class Program     {         static void Main()         {             var table1 = new List<Table1>();             table1.Add( new Table1 { Id = 1, Name = "Name 1" , Address = "Address 1" });             table1.Add( new Table1 { Id = 2, Name = "Name 2" , Address = "Address 2" });             table1.Add( new Table1 { Id = 3, Name = "Name 3" , Address = "Address 3" });             table1.Add( new Table1 { Id = 4, Name = "Name 4" , Address = "Address 4" });   
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