ienumerable string use of unassigned local variable c# using

Abhilash J A

Hello sir,

In mvc 4 c# view page:-

@{
IEnumerable ListGroupID;
}

@if (TempData["Message"] != null) {

var listTopline = TempData["Message"] as EMGUI.ViewModel.TopLineToExposure;
var ListGroupIds = listTopline.GroupIds;
ListGroupID = ListGroupIds.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries).Distinct();
}

Problem: when I am tring to use 'ListGroupID' inside foreach there is error occuring "ienumerable string use of unassigned local variable". How to solve this?

@foreach (var item in ListGroupID)
{

}

2 Replies

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

Guest User10y ago
Accepted answer
Your list is only initialized if TempData["Message"] != null. If it is null then ListGroupID remains uninitialized until it is used in the foreach. Hence that message. Solution is to initialize your List, like so:

IEnumerable ListGroupID = new List();
Abhilash J A10y ago
Oh my God it is working....

Thank you thank you pritaeas sir for your replay!!!