README auto update [skip ci]

Author: DevExpressExampleBot

Readme.md

@@ -2,6 +2,7 @@
 ![](https://img.shields.io/endpoint?url=https://codecentral.devexpress.com/api/v1/VersionRange/128537651/13.1.4%2B)
 [![](https://img.shields.io/badge/Open_in_DevExpress_Support_Center-FF7200?style=flat-square&logo=DevExpress&logoColor=white)](https://supportcenter.devexpress.com/ticket/details/E1332)
 [![](https://img.shields.io/badge/📖_How_to_use_DevExpress_Examples-e9f6fc?style=flat-square)](https://docs.devexpress.com/GeneralInformation/403183)
+[![](https://img.shields.io/badge/💬_Leave_Feedback-feecdd?style=flat-square)](#does-this-example-address-your-development-requirementsobjectives)
 <!-- default badges end -->
 # Combo Box for ASP.NET Web Forms - How to add items to an editor on the client in multi-column mode
 
@@ -52,3 +53,10 @@ Add a text editor and a button to the page. In the button's client-side `Click`
 ## Documentation
 
 * [Multi-Column Mode](https://docs.devexpress.com/AspNet/DevExpress.Web.ASPxComboBox#multi-column-mode)
+<!-- feedback -->
+## Does this example address your development requirements/objectives?
+
+[<img src="https://www.devexpress.com/support/examples/i/yes-button.svg"/>](https://www.devexpress.com/support/examples/survey.xml?utm_source=github&utm_campaign=asp-net-web-forms-combo-box-add-items-in-multi-column-mode&~~~was_helpful=yes) [<img src="https://www.devexpress.com/support/examples/i/no-button.svg"/>](https://www.devexpress.com/support/examples/survey.xml?utm_source=github&utm_campaign=asp-net-web-forms-combo-box-add-items-in-multi-column-mode&~~~was_helpful=no)
+
+(you will be redirected to DevExpress.com to submit your response)
+<!-- feedback end -->