Question

I’m trying to store 3 variables in a ListViewItem’s Tag object. I’m currently doing it like this:

lvi.Tag = new object[] { value1, value2, value3 };

This is not a problem, but when I try to revert it with this code:

object[] objs = (lvi.Tag as object[]);
int t = (int)objs[0];

It gives me an exception System.InvalidCastException. I’ve tried debugging it, but the debugger gives me the correct information

objs = object[] { 1, 93234, 0 }

Does anyone have an idea what is happening?

Answer 1

The following code works perfectly fine:

class Program
{
    static void Main()
    {
        ListViewItem lvi = new ListViewItem();
        lvi.Tag = new object[] { 1, 93234, 0 };

        object[] objs = (lvi.Tag as object[]);
        int t = (int)objs[0];
        Console.WriteLine(t);
    }
}

So I guess you have doubles (or decimals or floats), but not integers, so make sure that you are casting back to the correct type:

double t = (double)objs[0];