Table of Contents
  • Getting Started
  • EO.Pdf
  • EO.Web
    • Overview
    • Installation & Deployement
    • EO.Web ToolTip
    • EO.Web Rating
    • EO.Web Slider & RangeSlider
    • EO.Web ListBox
    • EO.Web ComboBox
    • EO.Web Captcha
    • EO.Web ASPX To PDF
    • EO.Web Slide
    • EO.Web Flyout
    • EO.Web EditableLabel
    • EO.Web ImageZoom
    • EO.Web Floater
    • EO.Web Downloader
    • EO.Web ColorPicker
    • EO.Web HTML Editor
    • EO.Web File Explorer
    • EO.Web SpellChecker
    • EO.Web Grid
    • EO.Web MaskedEdit
    • EO.Web Splitter
    • EO.Web Menu
    • EO.Web Slide Menu
    • EO.Web TabStrip
    • EO.Web TreeView
    • EO.Web Calendar
    • EO.Web Callback
    • EO.Web MultiPage
    • EO.Web Dialog
    • EO.Web AJAXUploader
    • EO.Web ProgressBar - Free!
    • EO.Web ToolBar - Free!
  • EO.WebBrowser
  • EO.Wpf
  • Common Topics
  • Reference
Table of Contents
Customize CAPTCHA Image

An EO.Web CAPTCHA image consists of a background image, a warped text and a distorted line. The following properties can be used to customize each of these components in the CAPTCHA image:

Property Remarks
Properties for Background Image
ImageBackColor Specifies the background color of the image.
ImageNoiseLevel Specifies the amount of background noise in the CAPTCHA image.
ImageStyle Specifies the style properties for the CAPTCHA image. This property can be used to create borders or margins for the image, it can also be used to float or absolute position the image.
ImageWidth Specifies the width of the CAPTCHA image.
ImageHeight Specifies the height of the CAPTCHA image.
Properties for Text
TextFontFamily Specifies the text font name.
TextNoiseLevel Specifies the warp level of the text in the image.
TextColor Specifies the color of the text in the CAPTCHA image.
TextCharSet Specifies the character set of the text in the CAPTCHA image.
TextLength Specifies the text length.
Properties for Line
LineNoiseLevel Specifies the complexity level of the lines in the image.
LineColor Specifies the color of the lines in the CAPTCHA image.