Getting Started with Adobe After Effects - Part 6: Motion Blur


Upload Image Close it
Select File

I am Jalpesh Vadgama a Microsoft MVP for Visual C# and BrainBench Certified ASP.NET Developer having more then 6 years of experience in .NET Technology.
Browse by Tags · View All
#ASP.NET 88
#DOTNET 87
BRH 79
ASP.NET 72
#.NET 52
C#.NET 48
DOTNET 47
ASP.NET 4.0 31
ASP.NET MVC 29
VisualStudio 27

Archive · View All
December 2010 16
July 2011 13
April 2011 13
April 2012 12
January 2011 12
June 2011 11
May 2011 11
May 2012 8
February 2013 7
January 2013 7

SelectMethod in asp.net 4.5 Model binding.

Mar 6 2013 2:41PM by Jalpesh   

New version of ASP.NET provides lots of way of binding data to the data controls like Grid View, Repeater etc. You can now bind this controls with strong type. I have earlier written a blog post about How we can use Model binding with ASP.NET 4.5 and Visual Studio 2012.

SelectMethod in ASP.NET 4.5:

In asp.net 4.5, It is also possible to bind controls with SelectMethod attribute. This method specify the data that you want to bind with data controls like grid view and repeater controls.

So what we are waiting for?? Let’s take an simple example. I have create a basic model class “Employee” like below.

public class Employee
{
    public int EmployeeId { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

This class contains three properties EmployeeId,FirstName and LastName. Now I have created one method to get a generic list of employee model like following.

public List<Employee> GetEmployees()
{
    List<Employee> employeeList = new List<Employee>();
    for (int i = 1; i <= 5; i++)
    {
        employeeList.Add(new Employee { 
            EmployeeId=i,
            FirstName=string.Format("First{0}",i),
            LastName=string.Format("Last{0}",i)
        });
    }
    return employeeList;
}

Here you can see it will list of five employee. For this example I have created the employee list but you can replace with your database model.

Now it’s time to use “SelectMethod” attribute like following.

<asp:GridView ID="grdEmployee" runat="server" SelectMethod="GetEmployees"
     ItemType="WebApplication2.Employee">
</asp:GridView>

Here, you can see that I putted GetEmployee method as SelectMethod attribute and ItemType  attribute is my model Employee. Let’s run that example. Below is the out put as expected.

SelectMethod

SelectMethod filtering:

You can also do the filtering with the Select Method very easily. Here to demonstrate the filtering let’s take a dropdown list  control like following and based on the dropdown list control selected item we will filter our grid view with select method. Following is a HTML code for this.

<form id="form1" runat="server">
<div>
    <asp:DropDownList ID="ddlEmployee" AutoPostBack="true" runat="server">
            <asp:ListItem Text="1"></asp:ListItem>
            <asp:ListItem Text="2"></asp:ListItem>
    </asp:DropDownList>
</div>
<div>
    <asp:GridView ID="grdEmployee" runat="server" SelectMethod="GetEmployees" ItemType="WebApplication2.Employee">
    </asp:GridView>
</div>
</form>
Now let’s modify our GetEmployees method like following to filter based on dropdownlist control.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.ModelBinding;

namespace WebApplication2
{
    public partial class WebForm1 : System.Web.UI.Page
    {

        public List<Employee> GetEmployees([Control]int? ddlEmployee)
        {
            List<Employee> employeeList = new List<Employee>();
            for (int i = 1; i <= 5; i++)
            {
                employeeList.Add(new Employee { 
                    EmployeeId=i,
                    FirstName=string.Format("First{0}",i),
                    LastName=string.Format("Last{0}",i)
                });
            }
            return employeeList.Where(e=>e.EmployeeId==ddlEmployee).ToList();
        }
    }
}

Here you can see that I have added parameter with ddlEmployee with INT Type.  And also if you see I have used  System.Web.ModelBinding namespace to use that parameter as control attribute. This does all the trick and it will filter based on the dropdownlist selection.

Now let’s run the example again.

Select method filtering in asp.net 4.5 Model binding

Same way if you select “2” it will have output as following.

Select method filtering in asp.net 4.5 Model binding

So, Here you can see you can easily create a filtering with ‘Select Method’ also. it’s very easy to use. Hope you like it. Stay tuned for more..

Tags: dotnet


Jalpesh
15 · 11% · 3548
0
Liked
 
0
Lifesaver
 
0
Refreshed
 
0
Learned
 
0
Incorrect



Submit

Your Comment


Sign Up or Login to post a comment.

    Copyright © Rivera Informatic Private Ltd Contact us      Privacy Policy      Terms of use      Report Abuse      Advertising      [ZULU1097]