Merge pull request #3781 from syncfusion-content/324496-dev-dad-corr

324496: Correction in dual listbox with drag and drop sample code of listbox.

Author: BuvanaSathasivam

ej2-asp-core-mvc/code-snippet/listbox/drag-drop/dual-drag/taghelper

@@ -1,6 +1,8 @@
 <div style="width:50%; margin:auto">
     <div style="float:left; width:48%">
-        <ejs-listbox id="listbox1" dataSource="@ViewBag.groupA" allowDragAndDrop="true" scope="#listbox2" height="290px"></ejs-listbox>
+        <ejs-listbox id="listbox1" dataSource="@ViewBag.groupA" allowDragAndDrop="true" scope="#listbox2" height="290px">
+            <e-listbox-toolbarSettings items="@ViewBag.items"></e-listbox-toolbarSettings>
+        </ejs-listbox>
     </div>
     <div style="float:right; width:48%">
         <ejs-listbox id="listbox2" dataSource="@ViewBag.groupB" allowDragAndDrop="true" scope="#listbox2" height="290px"></ejs-listbox>