How Do I Handle multiple Post Backs Between Two or More Dropdown List Boxes and the Button In Single View

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VB

Razor

MVC4

Hi Friends,

I am new to MVC,

I should manage three DropDownListBoxes in my single view page , let it be

Scheme_category

<DDL1>

<scheme_item 1="">
<scheme_item 2="">
......
<scheme_item n="">

Fund_category

<DDL2>

<fund_item 1="">
<fund_item 2="">
......
<fund_item n="">

Payment_Category

<DDL3>

<payment_item 1="">
<payment_item 2="">
......
<payment_item n="">

1. If i click anyone of the Scheme_item from DDL1 means, DDl2 and DDL3 should load their related category items by automatically depending upon the condition of DDL1 (It means Postback should be done in there itself)

(or else)

If I click anyone of the DDL's item, other two DDLs should Load their items ,automatically depending upon the conditions


2. after that i have to submit the page through the button_click(postback will be done here)


my Question is : Multiple Postbacks should be done , but different controls like( DDL1,DDL2,DDL3 and BUTTON

How can i handle the multiple postbacks in same view page, help me




note: three DropDownList Boxes and button are placed in Same view page.

Thanks In Advance,

Velsamy A