Web Forms are the heart and soul of ASP.NET. Web Forms are the User Interface (UI) elements that give your web applications their look and feel. Web Forms are similar to Windows Forms in that they provide properties, methods, and events for the controls that are placed onto  them. However, these UI elements render themselves in the appropriate markup language   required by the request, e.g. HTML. If you use Microsoft Visual Studio. NET, you will also get the familiar drag-and-drop interface used to create your UI for your Web application.