Dropdownlist not hold selected value while use pagination

Does not hold selected value AA while using pagination. When moving to another page, dropdownlist moves to state All.

Used ViewBag to store the current filter state but no luck.

No idea where to go and change the code to make it work. Can anyone enlighten me the way to do this.

Public async Task Index(string searchText, string currentFilter, int? page)
{
int selectedPage = page ?? 1;
int bypassCount = (selectedPage - 1) * _pagingOptions.PageSize;
if (searchText != null) { page = 1; }
else { searchText = currentFilter; }
ViewBag.CurrentFilter = searchText;
}

index

"Index" method="get">
class="custom-select" asp-for="searchText" value="@(ViewBag.CurrentFilter)">
"">All
"AA">AA
"AE">AE
"AR">AR
class="col-md-12">
class="btn btn-primary" type="submit">Search

class="table"> Resent Resent Date Created Date @if (Model.Items.TotalItemCount > 0)

{

@foreach (var item in Model.Items.ToList())

{

@Html.DisplayFor(modelItem => resentString)

@Html.DisplayFor(modelItem => resentDateString)

@Html.DisplayFor(modelItem => createdDateString)

} }

https://www.codeproject.com/Questions/5263978/Dropdownlist-does-not-hold-selected-value-when-use

Hi @Vinay i am not making it complex. I am not getting why he can't use model for the dropdown. If he willuse model then there is no need to store the value in viewbag or anywhere.

and @Rajesh Yadav if you are using viewbag then you have to use jquery $(document).ready(function(){}); in this you have to check the value of viewbag is null or not if not null then you have set the value of dropdown.

Because as you are trying to set the value of dropdown is not a valid way or it is wrong way. It will nerver work.

hope it will be helpful

Hi @Rahul why u r making things complex. as he mention he is not able to get the value on post back.

@Rajesh Yadav I will get the solution and let you know

Hi @vinay, if you are using model for the dropdown then the selected value will not change on post back.

Or if you are not using model for the dropdown then you can use partail view for the table and update only partial view.

Hi @Vinay, Can you show me some example. I am struggling since yesterday to fix this. Appreciated if you could provide me solution based on my code.

If you see, I am using ViewBag to store current state of dropdown but still it is not working.

Hi as i can see u r using MVC . Do do one thing declare a property which holds the dropdown selected value and wneh ever postback take pace just reassign the value to that property.

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Rajanikant Hawaldar6y ago
https://www.codeproject.com/Questions/5263978/Dropdownlist-does-not-hold-selected-value-when-use
Rahul Lakshakar6y ago
Hi @Vinay i am not making it complex. I am not getting why he can't use model for the dropdown. If he willuse model then there is no need to store the value in viewbag or anywhere.

and @Rajesh Yadav if you are using viewbag then you have to use jquery $(document).ready(function(){}); in this you have to check the value of viewbag is null or not if not null then you have set the value of dropdown.
Because as you are trying to set the value of dropdown is not a valid way or it is wrong way. It will nerver work.

hope it will be helpful
Vinay Singh6y ago
Hi @Rahul why u r making things complex. as he mention he is not able to get the value on post back.

@Rajesh Yadav I will get the solution and let you know
Rahul Lakshakar6y ago
Hi @vinay, if you are using model for the dropdown then the selected value will not change on post back.
Or if you are not using model for the dropdown then you can use partail view for the table and update only partial view.
Rajesh Yadav6y ago
Hi @Vinay, Can you show me some example. I am struggling since yesterday to fix this. Appreciated if you could provide me solution based on my code.

If you see, I am using ViewBag to store current state of dropdown but still it is not working.
Vinay Singh6y ago
Hi as i can see u r using MVC . Do do one thing declare a property which holds the dropdown selected value and wneh ever postback take pace just reassign the value to that property.