WF-64663-Updated the content and added image.

Author: Raghav-Sudhakar

README.md

@@ -1,2 +1,64 @@
 # how-to-disable-some-items-winforms-combobox-dropdown
 This example demonstrates how to disable some items from a winforms combobox dropdown. For more details please refer [how to disable some items from winforms combobox dropdown](https://www.syncfusion.com/kb/11254/how-to-disable-some-items-winforms-combobox-dropdown).
+
+## Changing forecolor for disabled items in dropdown
+You can change the forecolor for disabled items by handling [SfComboBox.DropDownListView.DrawItem]((https://help.syncfusion.com/cr/windowsforms/Syncfusion.WinForms.ListView.SfListView.html)) event to show the items is disabled.
+
+{% tabs %}
+
+{% highlight C# %}
+
+sfComboBox.DropDownListView.DrawItem += DropDownListView_DrawItem;
+ 
+private void DropDownListView_DrawItem(object sender, Syncfusion.WinForms.ListView.Events.DrawItemEventArgs e)
+{
+    bool isItemEnable = (this.sfComboBox.ComboBoxMode == ComboBoxMode.MultiSelection && this.sfComboBox.AllowSelectAll && e.ItemIndex == 0) ? true : (e.ItemData as Details).IsEnabled;
+    if (!isItemEnable)
+    {
+        e.Style.BackColor = Color.LightGray;
+        e.Style.ForeColor = Color.Gray;
+    }
+}
+
+{% endhighlight %}
+
+## Handling selection for disabled items in dropdown
+Selection of disabled items in multi selection mode handled using [SfComboBox.DropDownListView.SelectionChanged](https://help.syncfusion.com/cr/windowsforms/Syncfusion.WinForms.ListView.SfListView.html) and [SfComboBox.DropDownListView.ItemChecking event](https://help.syncfusion.com/cr/windowsforms/Syncfusion.WinForms.ListView.SfListView.html). In single selection mode, selection is handled using [SfComboBox.DropDownListView.SelectionChanging event](https://help.syncfusion.com/cr/windowsforms/Syncfusion.WinForms.ListView.SfListView.html).
+
+{% tabs %}
+
+{% highlight C# %}
+
+sfComboBox.DropDownListView.SelectionChanged += DropDownListView_SelectionChanged;
+sfComboBox.DropDownListView.ItemChecking += DropDownListView_ItemChecking;
+sfComboBox.DropDownListView.SelectionChanging += DropDownListView_SelectionChanging;
+ 
+private void DropDownListView_SelectionChanged(object sender, Syncfusion.WinForms.ListView.Events.ItemSelectionChangedEventArgs e)
+{
+    if (e.AddedItems.Count == this.sfComboBox.DropDownListView.View.Items.Count)
+    {
+        for (int i = 0; i < this.sfComboBox.DropDownListView.CheckedItems.Count; i++)
+        {
+            if ((this.sfComboBox.DropDownListView.CheckedItems[i] as Details).IsEnabled == false)
+                this.sfComboBox.DropDownListView.CheckedItems.RemoveAt(i);
+        }
+    }
+}
+ 
+private void DropDownListView_ItemChecking(object sender, Syncfusion.WinForms.ListView.Events.ItemCheckingEventArgs e)
+{
+    bool isItemEnable = (this.sfComboBox.ComboBoxMode == ComboBoxMode.MultiSelection && this.sfComboBox.AllowSelectAll && e.ItemIndex == 0) ? true : (e.ItemData as Details).IsEnabled;
+    if (!isItemEnable)
+        e.Cancel = true;
+}
+ 
+private void DropDownListView_SelectionChanging(object sender, Syncfusion.WinForms.ListView.Events.ItemSelectionChangingEventArgs e)
+{
+    if (e.AddedItems.Count > 0 && !(e.AddedItems[0] as Details).IsEnabled && e.AddedItems.Count != this.sfComboBox.DropDownListView.View.Items.Count)
+        e.Cancel = true;
+} 
+
+{% endhighlight %}
+
+![Disable items in ComboBox](SfComboBox/SfComboBox/ComboBox%20Images/Disable%20some%20items%20in%20ComboBox.png)
+