Select Data Using Entity Framework Async Call

Introduction

This article will show you how to select data using an Entity Framework async call.

Create a console application as in the following figure:


Figure 1: Create console application

Add Entity Framework to project as in Figures 2, 3 and 4.

 

Figure 2: Add Entity Framework

 

Figure 3: Choose Connection

 

Figure 4: Choose Database Object

Program.cs

  1. using System;  
  2. using System.Collections.Generic;  
  3. using System.Linq;  
  4. using System.Text;  
  5. using System.Data.Entity;  
  6. using System.Threading.Tasks;  
  7.   
  8. namespace SelectData_EF_Async  
  9. {  
  10.     class Program  
  11.     {  
  12.         static void Main(string[] args)  
  13.         {  
  14.             var employee = GetEmployeeData();  
  15.             employee.Wait();  
  16.             Console.ReadKey();  
  17.         }  
  18.         public static async Task GetEmployeeData()  
  19.         {  
  20.             using (var db = new EmployeeDBEntities())  
  21.             {  
  22.                 var query = await (from b in db.Employees  
  23.                                    select b).ToListAsync();  
  24.                 foreach (var r in query)  
  25.                 {  
  26.                     Console.Write(r.FirstName + "\n");  
  27.                 }  
  28.             }  
  29.         }  
  30.     }  
  31. }  
The output of the application is as in Figure 5.

 

Figure 5: Output of the application

Summary

In this article we saw how to select data using an Entity Framework async call.


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