diff --git a/.github/workflows/gitleaks.yaml b/.github/workflows/gitleaks.yaml
new file mode 100644
index 0000000..48a24dd
--- /dev/null
+++ b/.github/workflows/gitleaks.yaml
@@ -0,0 +1,38 @@
+name: Secret Value found!
+on:
+  push:
+  public:
+jobs:
+  scan:
+    name: gitleaks
+    runs-on: ubuntu-latest
+    steps:
+     - name: Checkout
+       uses: actions/checkout@v3 
+     - name: Install the gitleaks
+       run: wget https://github.com/zricethezav/gitleaks/releases/download/v8.15.2/gitleaks_8.15.2_linux_x64.tar.gz
+       shell: pwsh
+     - name: Extract the tar file
+       run: tar xzvf gitleaks_8.15.2_linux_x64.tar.gz
+     - name: Generate the report
+       id: gitleaks
+       run: $GITHUB_WORKSPACE/gitleaks detect -s $GITHUB_WORKSPACE -f json -r $GITHUB_WORKSPACE/leaksreport.json
+       shell: bash
+       continue-on-error: true
+     - name: Setup NuGet.exe
+       if: steps.gitleaks.outcome != 'success'
+       uses: nuget/setup-nuget@v1
+       with:
+          nuget-version: latest
+     - name: Install the dotnet
+       if: steps.gitleaks.outcome != 'success'
+       uses: actions/setup-dotnet@v3
+       with:
+          dotnet-version: '3.1.x'
+     - name: Install the report tool packages
+       if: steps.gitleaks.outcome != 'success'
+       run: |
+           nuget install "Syncfusion.Email" -source "https://nexus.syncfusion.com/repository/nuget-hosted/"
+           dir $GITHUB_WORKSPACE/Syncfusion.Email.1.0.0/lib/netcoreapp3.1
+           dotnet $GITHUB_WORKSPACE/Syncfusion.Email.1.0.0/lib/netcoreapp3.1/Email.dll "citeam@syncfusion.com" "$GITHUB_REF_NAME" ${{ secrets.NETWORKCREDENTIALS }} ${{ secrets.NETWORKKEY }} "$GITHUB_WORKSPACE"
+           exit 1
diff --git a/README.md b/README.md
index 1b8ddf7..65dd7e5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,52 @@
-# how-to-disable-some-items-winforms-combobox-dropdown
-This sample shows how to disable some items winforms combobox dropdown.
+# how-to-disable-items-winforms-combobox-dropdown
+This example demonstrates how to disable items from a winforms combobox dropdown. For more details please refer [how to disable 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 event to show the items is disabled.
+
+# 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;
+        }
+    }
+
+## Handling selection for disabled items in dropdown
+Selection of disabled items in multi selection mode handled using SfComboBox.DropDownListView.SelectionChanged and SfComboBox.DropDownListView.ItemChecking event. In single selection mode, selection is handled using SfComboBox.DropDownListView.SelectionChanging event.
+
+# C#
+
+    private void DropDownListView_SelectionChanged(object sender, Syncfusion.WinForms.ListView.Events.ItemSelectionChangedEventArgs e)
+        {
+            if (e.AddedItems.Count == this.sfComboBox.DropDownListView.View.Items.Count)S
+            {
+                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;
+    }    
+
+![Disable items in ComboBox](SfComboBox/SfComboBox/ComboBox%20Images/Disable%20some%20items%20in%20ComboBox.png)
+
diff --git a/SfComboBox/SfComboBox/ComboBox Images/Disable some items in ComboBox.png b/SfComboBox/SfComboBox/ComboBox Images/Disable some items in ComboBox.png
new file mode 100644
index 0000000..9357797
Binary files /dev/null and b/SfComboBox/SfComboBox/ComboBox Images/Disable some items in ComboBox.png differ