Skip to main content

Binding A Custom Entity Class to stored procedure using Linq-To-SQL

I have already written several post about Linq its a great ORM that we can use in various way. The purpose of this post to demonstrate How we can bind custom entity to stored procedure result with use of Linq-To-SQL. Let’s go through it and you will realize that how easy it will be to bind a Custom Entity to Stored Procedure result.

Let’s first create a simple table to which will hold the user data. It will contain four field like UserId,UserName,FirstName and LastName like following.

SQLTable

Now let’s insert some data into the table like following. SQLTableData

Now let’s create a stored procedure which will return the table data and a new field called Full Name like following. Here full name is a combination of first name and last name

CREATE PROCEDURE dbo.GetAllUsers

AS
SET NOCOUNT ON
SELECT
UserId,
UserName,
FirstName,
LastName,
FirstName + ' ' + LastName AS [FullName]

FROM dbo.Users
After creating a stored procedure it time to create a Linq-To-SQL Right Click Project->Add New Item and Go To->Data and Add LINQ to SQL Classes called MyBlogDataContext.dbml.After creating datacontext class for Linq just drag above store procedure to Linq-To-SQL classes and it will create a function like following.

StoredProcedureInLinqClass

Now let’s add a New Entity Class called UserInfo into Linq-To-SQL DataContext via Right Click Add New Class Just like following.AddClass

After adding class I have added same property as its having in user table and Hence our UserInfo Class will look like following.

UserInfoClass

Now everything is ready Custom Entity Class called UserInfo and we have Our Function ready which will return Stored Procedure output. Here Linq-To-SQL Provides a property called ReturnType If you select function which we have created via dragging a stored procedure in data context class. We just need to select our UserInfo class there just like following and it will bind the stored procedure with that particular UserInfo class. here only condition should be satisfied that Our Custom Entity class should contain all the field with compatible .NET Data types which will return the data. Below is the property which we are talking about.

SelectProperty

Now let’s add grid view to default.aspx page like following and Let’s bind output of stored procedure to that grid view.
<asp:GridView ID="grdUserList" runat="server">
</asp:GridView> 
After placing the Grid View in page here is the code for biding grid view in default.aspx page_load event.
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
using (MyBlogDataContextDataContext myContext =
new MyBlogDataContextDataContext())
{
List<UserInfo> MyUserList =
myContext.GetAllUsers().ToList<UserInfo>();
grdUserList.DataSource = MyUserList;
grdUserList.DataBind(); 
}
}
}
And here is the output which we get in browser after running our web application.

Ouput

That’s it its very easy.. Hope this will help you…

Shout it

Comments

Popular posts from this blog

How to create Rest API(Web API) with ASP.NET Core 1.0

Recently Microsoft has released ASP.NET Core 1.0 RC2, I am getting lots of request from readers that about creating Web API. So I thought it will be a good idea to write a blog post about how to create Rest API(Web API) with ASP.NET Core 1.0.

So let’s get started via creating an ASP.NET Core 1.0 Web Application like following.



Once you click on ASP.NET Web Application, It will ask whether you need to create Web Application or Web API application. We are going to Web API so I am going to select Web API Application like following. Please note that in ASP.NET Core 1.0 there is no separate libraries or DLLs required for creating web APIs. This is just a project template.



Now once you click on OK It will create a Web API application with default values controller and program.cs.  As you know Program.cs is now starting point for the ASP.NET Core 1.0 application so It contains all the required configuration and startup items. Following is a code for that.
using System.IO; using Microsoft.Asp…

How to use migration with Entity Framework Core

Entity framework core is  the lightweight, extensible and cross-platform version of Entity Framework. Before some time, Microsoft has Released a new version of Entity Framework RC2. I have written a couple of blog post about Entity framework code first migration earlier for Entity framework 6.0. So there was a couple of request coming for writing a blog post about Entity Framework Core RC2 migration. So I thought it will be a good idea to give an overview how database migration works in Entity Framework Core RC2. This post will cover a basic scenario where we are going to create the database with existing ASP.NET Identity migration and then we are going to create a new model and have that migration applied in the database.

How to use Entity Framework Migrations: Let’s get started, To demonstrate entity framework core migrations, I am going to create a sample asp.net core web application like following.



Once we select asp.net core application it will appear the following dialog.



Now w…

Creating PDF with ASP.Net MVC and RazorPDF

Update: I have written a new blog post about better approach to create a PDF with asp.net mvc- You can find that following location.- A Better Solution to create PDF with Rotativa and ASP.NET MVC
In this post we are going to learn how we can easily create PDF from ASP.Net application with the help of Razor PDF NuGet package.

About Razor PDF:
This NuGet package is created by Al Nyveldt It internally uses ITextSharp an open source PDF convertor library. RazorPDF uses Razor View engine to create iTextXML which is in tern used to produce PDF file. You can get more information about that at below link.

https://www.nuget.org/packages/RazorPDF

Example(Creating PDF with ASP.Net MVC):
So what we are we waiting for ? Let’s create a simple example. To create example first thing we need to a create and ASP.Net MVC application.