ASP.Net Page reloads everytime

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Hi,

Iam designing a ASP.net pages with multiple dependent dropdown lists, If i change a value in a DDl every time my asp page reloading (like Flashng).Please give an sugetion to avoid this.

Posted 22-May-12 10:26am

myansweris

Updated 22-May-12 10:27am

v2

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5 solutions

Solution 1

Hi there,

Well, you could have searched this in Google and got the answer but as you haven't I'll give you a better search to do:

Search Google for using AJAX in ASP.Net applications.

This will get you your answer. It has to be done with JavaScript code sending requests and getting responses from your server which is a page request but hidden from the user.

Hope this helps,
Ed

Posted 22-May-12 10:31am

Ed Nutting

Updated 22-May-12 10:32am

v2

Comments

myansweris 1-Jun-12 9:27am

Thank you...

Solution 5

Bind DropDownList in the following ways.

if(!Page.IsPostBack)
{
    //Bind your DropDownList here in this block. 
}

I think this help you.

Posted 23-May-12 10:17am

Sushil Kumar Purohit

Solution 2

Whenever you Select a Different Value from DropDownlList and if other Dropdownlists are Dependent on the above one, you have to use AutoPostBack = true;

In such case every time you select value from Dropdown, your will flash and get data to Fill into Other Dropdown Lists.

For removing such Flash from User, you can you Ajax or JavaScript to block this.

Posted 22-May-12 15:47pm

John Bhatt

Comments

myansweris 30-May-12 10:57am

Thank you

John Bhatt 7-Sep-12 5:29am

most welcome.

Solution 4

There are other ways to implement cascading other than Update Panel. You can use one of the following:
1. XMLHttpRequest[^]
2. Callback[^]
3. WebService call[^]
4. PageMethod[^]

What you are doing is called cascading dropdown. If needed, have a look at it here: Google search result[^]

Few links:
Using CascadingDropDown with a Database[^]
Using CascadingDropDown with a Database[^]

Posted 23-May-12 5:47am

Sandeep Mewara

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Nilesh Patil Kolhapur · Accepted Answer · 2012-05-22T18:22:00

Solution 3

hi,

u need to use update panel for this issue

Please refer following threads:

http://www.techrepublic.com/blog/programming-and-development/implement-aspnet-ajax-with-the-updatepanel-control/501[^]

http://www.asp.net/web-forms/tutorials/aspnet-ajax/understanding-asp-net-ajax-updatepanel-triggers[^]

Best Luck

Happy Coding:)

Posted 22-May-12 18:22pm

Nilesh Patil Kolhapur

Comments

myansweris 24-May-12 10:35am

Thankyou