Strongly Typed Data Controls Value Provider ASP.NET 4.5

Introduction

Microsoft introduce new library System.web.Binding. There are lots of new things. One of them is QueryStringAttribute class. With the help of this class we can send directly query string value to method.

Code

Step 1: First we will create new Web Application in VS 2011.

Step 2: Now we'll create public method which will return list of objects.

public IQueryable<Employee> GetEmployees([QueryString("id")]int id = 0)

{
    IList<Employee> custlist = new List<Employee>();
    custlist.Add(new Employee { ID = 1, Name = "Employee 1", Salary = 1000 });
    custlist.Add(new Employee { ID = 2, Name = "Employee 2", Salary = 2000 });
    custlist.Add(new Employee { ID = 3, Name = "Employee 3", Salary = 3000 });
    custlist.Add(new Employee { ID = 4, Name = "Employee 4", Salary = 4000 });
    custlist.Add(new Employee { ID = 5, Name = "Employee 5", Salary = 5000 });
    custlist.Add(new Employee { ID = 6, Name = "Employee 6", Salary = 6000 });
    custlist.Add(new Employee { ID = 7, Name = "Employee 7", Salary = 7000 });
    return custlist.AsQueryable<Employee>().Where(c => c.ID == id);
}
public class Employee

{
    public int ID { get; set; }
    public string Name { get; set; }
    public int Salary { get; set; }
}

Step 3: Now we'll add Data control in aspx page. I have added GridView Control.

  <asp:GridView ID="GridView1" SelectMethod="GetEmployees" AutoGenerateColumns="true"
        PageSize="3" AllowPaging="true" AllowSorting="true" runat="server">
    </asp:GridView>

Step 4: Now we'll run our application and see the output.