C#

I'm trying to create a ListBox on the fly without using any XAML code. I got it working - almost. What I have is an array of TextBoxes of 'Zone Descriptions'. I can put those into the ListBox as ListBoxItems, and it works great - no problem.
 
I want to add at the front of the TextBox a TextBlock or header that says 'Zone 1' or whatever the zone is along with the TextBox, which is user changeable. I have an array of TextBlocks (I probably could have had strings just as well). But, I can't (or don't know how to) adjust the ListBoxItem.Content to hold both the TextBlock and TextBox combo. LBI[i].Content = TBlkZoneDesc[i] + TBxZoneDesc[i] is what I want to do, but that syntax is not allowed. Doing either one separately works fine, but not both.
 
Do anyone have a suggestion on how to do that?
 

            ListBox LBZoneDesc = new ListBox();
            LBZoneDesc.Width = 300;
            LBZoneDesc.Height = 240;
            Grid.SetColumn(LBZoneDesc,0);
            Grid.SetRow(LBZoneDesc,2);
 
            ListBoxItem[] LBI = new ListBoxItem[64];
            for (byte i = 0; i < 5; i++)
            {
                LBI[i] = new ListBoxItem();
                LBI[i].Padding = new Thickness(2);
                // LBI[i].Content = TBlkZoneDesc[i];
                LBI[i].Content = TBxZoneDesc[i];
                LBZoneDesc.Items.Add(LBI[i]);               
            }
            C0Grid.Children.Add(LBZoneDesc);

string x = "user = 'sa' password='eX65dere' server = 'localhost'";
Regex rx = new Regex("password=\'([a-zA-Z0-9]\\_+)\'");
var r = rx.Match(x);
     if (r.Groups.Count > 0)
     {
         var g1 = r.Groups[0]; 
         MessageBox.Show(g1.ToString());
     }

Regex rx = new Regex("password=\'([a-zA-Z0-9]+)\'");