C2025-023 - Electronic Procedures - Modifications to PROMS (checkin #3 - fix winforms select first item bug in listboxes)

2025-04-10 08:53:27 -04:00
parent 389b9e382b
commit d392131005
3 changed files with 61 additions and 10 deletions
--- a/PROMS/Volian.Controls.Library/ListBoxMulti.cs
+++ b/PROMS/Volian.Controls.Library/ListBoxMulti.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Volian.Controls.Library
+{
+    public partial class ListBoxMulti : ListBox
+    {
+        public ListBoxMulti()
+        {
+            Visible = true;
+            SelectionMode = SelectionMode.MultiSimple;
+
+            SelectedIndexChanged += lb_SelectedIndexChanged;
+
+            Disposed += ListBoxMulti_Disposed;
+        }
+
+        public int singleselectedindex { get; set; }
+
+        private void lb_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            ListBoxMulti tmp = (ListBoxMulti)sender;
+
+            if (tmp.SelectedItems.Count == 1 && tmp.singleselectedindex == 0)
+            {
+                tmp.ClearSelected();
+            }
+            else if (tmp.SelectedItems.Count == 1)
+                tmp.singleselectedindex = tmp.SelectedIndex;
+            else
+                tmp.singleselectedindex = -1;
+
+        }
+
+        private void ListBoxMulti_Disposed(object sender, EventArgs e)
+        {
+            SelectedIndexChanged -= lb_SelectedIndexChanged;
+        }
+    }
+}