static variable remove and c# duplication problem

Abhilash J A

Hello everyone,

I want to pass list items to one class to anther class. I have used static keyword. But now, when the application is running still old variable is there.

This is my 1st class,

foreach (DocumentsUser item in listView1.SelectedItems)
{
ImgName.Add(item.Parent_File_Name);
UserId.Add((int)item.UserId);
}
private static readonly List<string> imgName = new List<string>();
public static List<string> ImgName { get { return imgName; } }
private static readonly List<int> userId = new List<int>();
public static List<int> UserId { get { return userId; } }

And this is 2nd class, I want to access class 1 list each object.

foreach (var userId in Qscan.UC_FileMgmt.UserId)
{
foreach (var imgName in Qscan.UC_FileMgmt.ImgName)
{

Please help me...

8 Replies

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

Amit Gupta9y ago
Accepted answer
Just you need to change your static variable
from
private static readonly List<string> imgName = new List<string>();
to
public static ObservableCollection ImgNameArc = new ObservableCollection();

and it will do the rest

same has been attached

Hope it helps
Abhilash J A9y ago
Thanks Amit... Its working :)
Abhilash J A9y ago
Amit Thanks... Please find the attachment (PFA)
Amit Gupta9y ago
I believe that it is not possible that it holds old value, your code might be doing something unexpected. Share your code file to lookup.
Abhilash J A9y ago
Hello Amit,

I have removed readonly. Still static variable holding previous ImgName and UserId
How can I do this?
Amit Gupta9y ago
Remove the readonly keyword from your static variable
Abhilash J A9y ago
Hello Amit,

Thanks for replay me...

Actually I have a listview with checkboxes. After checked checkboxes then click a button. Then popup another window page that contain listview with respect to each Parent_File_Name and UserId . I am facing the issue is, after running this windows apps then many time click on the button again both static variable contain whole list items. How can do this? Can you get me?
Amit Gupta9y ago
Elaborate your question, what exactly the problem is?
* static variables holds its value untill the application is running

*static variables can be accessed ClassName.VariableName