how to set the selected value in the drop down list populated with ViewData in mvc

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I am new to MVC, please help me to set the selected value in drop down list populated using View Data ,
I have gone through so many solutions but every solutions deals with selecting value for single drop down.I have same drop down listed using the foreach loop. Setting selected value for each dropdown in that foreach loop.
my code is shown below...

[In view]

HTML

 int i = 0;

foreach (var item in Model.Select((x, j) => new { Data = x, Index = j + 1 }))
{
  @Html.DropDownListFor(model => item.Data.CategoryID,IEnumerable<SelectListItem>)ViewData["categories"], new { @id = "category" + i })
i++;
  }

[in controller]

HTML

SelectList selectList = new SelectList((IEnumerable<Category>)ConvertCategoryToList(dt1), "CategoryID", "CategoryName");
           ViewData["categories"] = selectList;

Posted 24-Apr-14 20:46pm

NKHari

Updated 24-Apr-14 21:18pm

Schatak

v2

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NKHari 25-Apr-14 2:50am

i am having 5 model items so it will list 5 dropdown for category with different categoryId , and I have to get the selected value for the 5 dropdown list as the corresponding categoryId ie,(item.Data.CategoryId)

Please help me ...

2 solutions

Solution 1

SelectList selectList = new SelectList((IEnumerable<category>)ConvertCategoryToList(dt1), "CategoryID", "CategoryName",1);
            ViewData["categories"] = selectList;

</category>

You have written correctly only need to mention which id you need to select default. Where I have mention manually 1 new "CateogryName"

You need to check it dynamically

Posted 24-Apr-14 21:25pm

sankarsan parida

Comments

NKHari 25-Apr-14 4:39am

Thanks for the response but i have a list of drop down so while I give a value or object like that you referred i will get only the same selected value for all the drop down.
My doubt is all about how to get corresponding selected values by passing the object as selectedValue from the controller or by using model (item.Data.CategoryID) in the view page ,which will provide the drop down list in the foreachloop corresponding selected value.

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NKHari · Accepted Answer · 2014-05-07T22:26:00

I got the solution.....
Thanks for the response everyone.

@Html.DropDownListFor(model => item.Data.CategoryID, new SelectList((IEnumerable<mvcworkstatusmanager.models.category>)ViewData["categories"], "CategoryID", "CategoryName", item.Data.CategoryID),"-Select Category-", new { @id = "category" + i })

Declaring select list in the view page give me the solution.
This code gives me the right selected category corresponding to each item.data from the database.