--- title: "ASP.Net AJAX Server Control: TextBoxWatermarkExtender" description: "This control allows you to put instructions in the textbox control. This gives them a better understanding of what to use the control for. It control" author: "Amit Singh" published: 2010-10-03 updated: 2019-11-13 canonical: https://www.mindstick.com/articles/149/asp-dot-net-ajax-server-control-textboxwatermarkextender category: "ajax" tags: ["ajax"] reading_time: 1 minute --- # ASP.Net AJAX Server Control: TextBoxWatermarkExtender ##### TextBoxWaterMarkExtender: This control allows you to put instructions in the textbox control. This gives them a better understanding of what to use the control for. It control have main properties as TargetControlID, WatermarkText, WatermarkCssClass etc.How we implement the TextBoxWaterMarkExtender Example: **Step1:** we use the following control on aspx page ```     TextBoxWatermarkExtender   
<%--Using ScriptManager or ToolkitScriptManager according toolkit version--%> <%-- add the TextBoxWatermarkExtender and textbox--%>
``` **Step3:** Run the project ##### Output: ![ASP.Net AJAX Server Control: TextBoxWatermarkExtender](https://www.mindstick.com/mindstickarticle/58c71168-0a88-4819-86cc-f219209456f9/images/c841e3fc-e025-4744-8f6d-3c636f797aba.png) --- Original Source: https://www.mindstick.com/articles/149/asp-dot-net-ajax-server-control-textboxwatermarkextender Copyright © MindStick Software Pvt. Ltd. This Markdown version is provided for developers, AI systems, and offline reading.