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How to build Ajax cascading dropdownlist using jQuery?
Here Mudassar Ahmed Khan has explained how to build your own AJAX Cascading DropDownlist using jquery in ASP.Net In my previous article I explained Creating Cascading DropDownLists in ASP.Net.
How does a cascading drop down list work?
A cascading drop-down list is a series of dependent DropDownList controls in which one DropDownList control depends on the parent or previous DropDownList controls. The items in the DropDownList control are populated based on an item that is selected by the user from another DropDownList control.
How to create a drop down list in ASP.NET?
The ASP.NET AJAX Control Toolkit provides a CascadingDropDown control as an ASP.NET AJAX extender. You can use the CascadingDropDown control to create a cascading drop-down list. This article discusses how to use the standard DropDownList control in ASP.NET together with the ASP.NET AJAX framework to achieve the cascading drop-down function.
How to populate dropdownlist of countries in jQuery?
You will notice below that this function simply calls the PopulateCountries method with the ID of the selected Continent as parameter using jQuery AJAX that described earlier. And on OnSuccess event of the jQuery AJAX call the Countries DropDownList is populated.
How to do a cascading dropdown in ASP.NET?
Now follow the steps given below Click on the Firebug which will open in the bottom. Now go to the “Net” tab where you will have different tabs like Header,Response,Post,JSON. Now select the country in the first dropdown.
What does it mean to have a cascading dropdownlist?
Cascading DropDownList means a series of dependent DropDownLists where one DropDownList is dependent on the parent or previous DropDownList and is populated based on the item selected by the user. On many occasions we need to make use of Cascading DropDownLists as I have here
How to populate a dropdownlist in jQuery?
And on OnSuccess event of the jQuery AJAX call I am populating the cities DropDownList The following method is used to populate the DropDownList with the data returned from the server. It accepts the list of data along with the reference of the control that needs to be populated.