public class BarcodeWebImage : Image, 
	IBarcode, IBarCodeContainer

Public Class BarcodeWebImage
	Inherits Image
	Implements IBarcode, IBarCodeContainer

public ref class BarcodeWebImage : public Image, 
	IBarcode, IBarCodeContainer

type BarcodeWebImage =  
    class
        inherit Image
        interface IBarcode
        interface IBarCodeContainer
    end

The BarcodeWebImage type exposes the following members.

	Name	Description
	BarcodeWebImage	Initializes a new instance of the BarcodeWebImage class.

	Name	Description
	AccessKey	(Inherited from WebControl.)
	Adapter	(Inherited from Control.)
	AddChecksum	Gets or sets a value indicating whether checksum should be added to barcode.
	AddChecksumToCaption	Gets or sets a value indicating whether checksum should be added to barcode caption.
	AdditionalCaption	Gets or sets the additional barcode caption text to draw.
	AdditionalCaptionAlignment	Gets or sets text alignment of the additional barcode caption.
	AdditionalCaptionFont	Gets or sets the font of the additional barcode caption.
	AdditionalCaptionPosition	Gets or sets the position of the additional caption.
	AlternateText	(Inherited from Image.)
	Angle	Gets or sets the barcode rotation angle in degrees.
	AppRelativeTemplateSourceDirectory	(Inherited from Control.)
	Attributes	(Inherited from WebControl.)
	AutoFitToControlSize	Gets or sets a value indicating whether to auto fit barcode to control size or not.
	BackColor	Gets or sets the color used to draw the barcode background. (Overrides WebControlBackColor.)
	BarHeight	Gets or sets the height of the barcode bars in pixels.
	BindingContainer	(Inherited from Control.)
	BorderColor	(Inherited from WebControl.)
	BorderStyle	(Inherited from WebControl.)
	BorderWidth	(Inherited from WebControl.)
	Caption	Gets or sets the barcode caption (by default this is encoded value).
	CaptionAlignment	Gets or sets the alignment of barcode caption text.
	CaptionFont	Gets or sets the font of the barcode caption.
	CaptionPosition	Gets or sets the position of the barcode caption.
	ChildControlsCreated	(Inherited from Control.)
	ClientID	(Inherited from Control.)
	ClientIDMode	(Inherited from Control.)
	ClientIDSeparator	(Inherited from Control.)
	Context	(Inherited from Control.)
	Controls	(Inherited from Control.)
	ControlStyle	(Inherited from WebControl.)
	ControlStyleCreated	(Inherited from WebControl.)
	CssClass	(Inherited from WebControl.)
	CutUnusedSpace	Gets or sets a value indicating whether unused space should be cut when drawing or saving barcode images. Unused space is usually a result of calling one of FitInto methods with size greater then needed to draw barcode.
	DataItemContainer	(Inherited from Control.)
	DataKeysContainer	(Inherited from Control.)
	DescriptionUrl	(Inherited from Image.)
	DesignMode	(Inherited from Control.)
	DrawCaption	Gets or sets a value indicating whether to draw the barcode encoded value.
	DrawCaptionFor2DBarcodes	Gets or sets a value indicating whether to draw the barcode encoded value for 2D barcodes.
	DrawQuietZones	Gets or sets a value indicating whether to draw quite zones when barcode type supposes such zones.
	Enabled	(Inherited from Image.)
	EnableTheming	(Inherited from WebControl.)
	EnableViewState	(Inherited from Control.)
	Events	(Inherited from Control.)
	Font	(Inherited from Image.)
	ForeColor	Gets or sets the color used to draw the barcode bars and caption(s). (Overrides WebControlForeColor.)
	GenerateEmptyAlternateText	(Inherited from Image.)
	HasAttributes	(Inherited from WebControl.)
	HasChildViewState	(Inherited from Control.)
	Height	Gets or sets the height of the Web server control. (Overrides WebControlHeight.)
	HorizontalAlignment	Gets or sets the horizontal alignment of the barcode within the container.
	ID	(Inherited from Control.)
	IdSeparator	(Inherited from Control.)
	ImageAlign	(Inherited from Image.)
	ImageUrl	(Inherited from Image.)
	IsChildControlStateCleared	(Inherited from Control.)
	IsEnabled	(Inherited from WebControl.)
	IsTrackingViewState	(Inherited from Control.)
	IsViewStateEnabled	(Inherited from Control.)
	LicenseInfo	Gets license information.
	LoadViewStateByID	(Inherited from Control.)
	Margins	Gets or sets the barcode margins in pixels.
	NamingContainer	(Inherited from Control.)
	NarrowBarWidth	Gets or sets the width of the narrow bar in pixels.
	Options	Gets or sets the barcode symbology specific options.
	OutputFormat	Gets or sets the output format of the barcode image.
	Page	(Inherited from Control.)
	Parent	(Inherited from Control.)
	PreserveMinReadableSize	Gets or sets a value indicating whether to check output size so it's not less than barcode size. Use FitInto() method to fit barcode into a given physical size.
	ProduceMonochromeImages	Gets or sets a value indicating whether the component should produce monochrome (1-bit, black and white) images.
	Profiles	Comma-separated list of profiles to apply to the Barcode. Profiles are sets of properties and methods represented as JSON string. Check the source code examples installed with the SDK.
	RegistrationKey	Gets or sets the key number part of registration information.
	RegistrationName	Gets or sets the name part of the registration information.
	RenderingCompatibility	(Inherited from Control.)
	RenderingHint	Gets or sets the text rendering quality.
	ResolutionX	Gets or sets the horizontal resolution of barcode.
	ResolutionY	Gets or sets the vertical resolution of barcode.
	RoundDots	Sets whether to generate barcodes with round dots. Works only for QR Code, DataMatrix, and Aztec barcode types.
	RoundDotsScale	Scale factor for RoundDots in percents.
	Site	(Inherited from Control.)
	SkinID	(Inherited from WebControl.)
	SmoothingMode	Gets or sets the barcode rendering quality.
	Style	(Inherited from WebControl.)
	SupplementValue	Gets or sets the supplementary barcode value to encode (used with EAN-13, ISBN and UPC-A barcodes).
	SupportsDisabledAttribute	(Inherited from Image.)
	Symbology	Gets or sets the barcode symbology type.
	TabIndex	(Inherited from WebControl.)
	TagKey	(Inherited from WebControl.)
	TagName	(Inherited from WebControl.)
	TemplateControl	(Inherited from Control.)
	TemplateSourceDirectory	(Inherited from Control.)
	ToolTip	(Inherited from WebControl.)
	UniqueID	(Inherited from Control.)
	Value	Gets or sets the barcode value to encode.
	Version	Gets the component version number.
	VerticalAlignment	Gets or sets the vertical alignment of the barcode within the container.
	ViewState	(Inherited from Control.)
	ViewStateIgnoresCase	(Inherited from Control.)
	ViewStateMode	(Inherited from Control.)
	Visible	(Inherited from Control.)
	WideToNarrowRatio	Gets or sets the width of the wide bar relative to the narrow bar.
	Width	Gets or sets the width of the Web server control. (Overrides WebControlWidth.)

	Name	Description
	AddAttributesToRender	(Inherited from Image.)
	AddDecorationImage(Image, Int32)	Add decorative image to draw in the center of the barcode. (!) Supported with QR Code only.
	AddDecorationImage(String, Int32)	Add decorative image to draw in the center of the barcode. (!) Supported with QR Code only.
	AddedControl	(Inherited from Control.)
	AddParsedSubObject	(Inherited from Control.)
	ApplyStyle	(Inherited from WebControl.)
	ApplyStyleSheetSkin	(Inherited from Control.)
	BuildProfileTree	(Inherited from Control.)
	ClearCachedClientID	(Inherited from Control.)
	ClearChildControlState	(Inherited from Control.)
	ClearChildState	(Inherited from Control.)
	ClearChildViewState	(Inherited from Control.)
	ClearEffectiveClientIDMode	(Inherited from Control.)
	CopyBaseAttributes	(Inherited from WebControl.)
	CreateChildControls	(Inherited from Control.)
	CreateControlCollection	(Inherited from Control.)
	CreateControlStyle	(Inherited from WebControl.)
	CreateProfile(String)	Creates JSON profile will all Barcode properties with current values.
	CreateProfile(String, String)	Creates JSON profile will all Barcode properties with current values.
	DataBind	(Inherited from Control.)
	DataBind(Boolean)	(Inherited from Control.)
	DataBindChildren	(Inherited from Control.)
	Dispose	Disposes all resources. (Overrides ControlDispose.)
	Draw(Graphics, Point)	Draws the barcode on Graphics canvas object.
	Draw(Graphics, Single, Single, UnitOfMeasure)	Draws the barcode.
	DrawHDC(IntPtr, Int32, Int32)
	DrawHDC(IntPtr, Single, Single, UnitOfMeasure)	Draws the barcode on HDC graphics context.
	DrawImagesToPDF(Stream, Stream, DrawImagesToPDFCallback)	Utility method allowing to draw any image on specified page of PDF document.
	DrawImagesToPDF(String, String, DrawImagesToPDFCallback)	Utility method allowing to draw any image on specified page of PDF document.
	DrawImagesToPDF(Stream, Int32, Image, Point, Stream)	Utility method allowing to draw any image on specified page of PDF document.
	DrawImagesToPDF(String, Int32, Image, Point, String)	Utility method allowing to draw any image on specified page of PDF document.
	DrawImagesToPDF(Stream, Int32, Image, Point, Stream, String)	Utility method allowing to draw any image on specified page of PDF document.
	DrawImagesToPDF(String, Int32, Image, Point, String, String)	Utility method allowing to draw any image on specified page of PDF document.
	DrawToImage(Stream, Int32, Int32, Int32, Stream)	Draws barcode to image at specified coordinates.
	DrawToImage(String, Int32, Int32, Int32, String)	Draws barcode to image at specified coordinates.
	DrawToNewPDF(String)	Creates new PDF document and draws barcode on it.
	DrawToNewPDF(String, Int32, Int32, Int32, Int32)	Creates new PDF document and draws barcode on it.
	DrawToPDF(Stream, Int32, Int32, Int32, Stream)	Draws barcode on specified page of PDF document.
	DrawToPDF(String, Int32, Int32, Int32, String)	Draws barcode on specified page of PDF document.
	EnsureChildControls	(Inherited from Control.)
	EnsureID	(Inherited from Control.)
	Equals	(Inherited from Object.)
	Finalize	(Inherited from Object.)
	FindControl(String)	(Inherited from Control.)
	FindControl(String, Int32)	(Inherited from Control.)
	FitInto(Size)	IMPORTANT: Call this method AFTER setting the barcode value. Fits the barcode into the area of size specified in pixels. Calling this method will change output size of the barcode. Barcode size will be increased in order to occupy all of the area.
	FitInto(SizeF, UnitOfMeasure)	IMPORTANT: Call this method AFTER setting the barcode value. Fits the barcode into the area of size specified in units. Calling this method will change output size of the barcode. Barcode size will be increased in order to occupy all of the area.
	FitInto(Int32, Int32)	IMPORTANT: Call this method AFTER setting the barcode value. Fits the barcode into the area of size specified in pixels. Calling this method will change output size of the barcode. Barcode size will be increased in order to occupy all of the area.
	FitInto(Single, Single, UnitOfMeasure)	IMPORTANT: Call this method AFTER setting the barcode value. Fits the barcode into the area of size specified in units. Calling this method will change output size of the barcode. Barcode size will be increased in order to occupy all of the area.
	Focus	(Inherited from Control.)
	GetBarHeight	Returns the height of the barcode bars in specified units.
	GetDesignModeState	(Inherited from Control.)
	GetHashCode	(Inherited from Object.)
	GetImage	Gets the Image object with the barcode.
	GetImageBytes	Returns the barcode image as byte array.
	GetImageBytesEMF	Returns the barcode image in EMF format as byte array.
	GetImageBytesGIF	Returns the barcode image in GIF format as byte array.
	GetImageBytesJPG	Returns the barcode image in JPEG format as byte array.
	GetImageBytesPNG	Returns the barcode image in PNG format as byte array.
	GetImageBytesTIFF	Returns the barcode image in TIFF format as byte array.
	GetImageBytesWMF	Returns the barcode image in WMF format as byte array.
	GetMarginBottom	Retrieves the bottom barcode margin value in specified units.
	GetMarginLeft	Returns the left barcode margin value in specified units.
	GetMarginRight	Returns the right barcode margin value in specified units.
	GetMargins	Returns the barcode margins in specified units.
	GetMarginTop	Returns the top barcode margin value in specified units.
	GetMinimalHeight	Returns the height in specified units of the smallest rectangle that can accommodate the barcode.
	GetMinimalSize	Gets or sets the size of the smallest rectangle in pixels that can accommodate the barcode.
	GetMinimalSize(UnitOfMeasure)	Returns the size in specified units of the smallest rectangle that can accommodate the barcode.
	GetMinimalWidth	Returns the width in specified units of the smallest rectangle that can accommodate the barcode.
	GetNarrowBarWidth	Retrieves the width of the narrow bar in specified units.
	GetPDFDimensions(Stream)	Returns size of PDF document pages in document units.
	GetPDFDimensions(String)	Returns size of PDF document pages in document units.
	GetPdfPageCount(Stream)	Returns count of pages in PDF document.
	GetPdfPageCount(String)	Returns count of pages in PDF document.
	GetRouteUrl(Object)	(Inherited from Control.)
	GetRouteUrl(RouteValueDictionary)	(Inherited from Control.)
	GetRouteUrl(String, Object)	(Inherited from Control.)
	GetRouteUrl(String, RouteValueDictionary)	(Inherited from Control.)
	GetSupplementaryValueRestrictions	Gets the supplementary value restrictions.
	GetTempImageFileName	Gets the name of the temp image file.
	GetType	(Inherited from Object.)
	GetUniqueIDRelativeTo	(Inherited from Control.)
	GetValueRestrictions	Gets the value restrictions for the specified symbology.
	HasControls	(Inherited from Control.)
	HasEvents	(Inherited from Control.)
	IsLiteralContent	(Inherited from Control.)
	LoadAndApplyProfiles	Loads profiles from JSON string and automatically applies them. Note that profiles containing detection keywords will be deferred until the extraction.
	LoadControlState	(Inherited from Control.)
	LoadProfiles	Loads profiles from file.
	LoadProfilesFromString	Loads profiles from JSON string.
	LoadViewState	(Inherited from WebControl.)
	MapPathSecure	(Inherited from Control.)
	MemberwiseClone	(Inherited from Object.)
	MergeStyle	(Inherited from WebControl.)
	OnBubbleEvent	(Inherited from Control.)
	OnDataBinding	(Inherited from Control.)
	OnInit	(Inherited from Control.)
	OnLoad	(Inherited from Control.)
	OnPreRender	(Inherited from Control.)
	OnUnload	(Inherited from Control.)
	OpenFile	(Inherited from Control.)
	ProcessMacros	Replaces macro codes with corresponding ASCII control characters.
	RaiseBubbleEvent	(Inherited from Control.)
	RemovedControl	(Inherited from Control.)
	RemoveTempFile	Removes the temp file.
	Render	Renders the barcode into html. (Overrides WebControlRender(HtmlTextWriter).)
	RenderBeginTag	(Inherited from WebControl.)
	RenderChildren	(Inherited from Control.)
	RenderContents	(Inherited from Image.)
	RenderControl(HtmlTextWriter)	(Inherited from Control.)
	RenderControl(HtmlTextWriter, ControlAdapter)	(Inherited from Control.)
	RenderEndTag	(Inherited from WebControl.)
	ResolveAdapter	(Inherited from Control.)
	ResolveClientUrl	(Inherited from Control.)
	ResolveUrl	(Inherited from Control.)
	RevertToNormalSize	Reverts any changes to barcode size caused by a call to any of FitInto methods.
	SaveControlState	(Inherited from Control.)
	SaveImage(Stream)	Saves the barcode image to specified stream.
	SaveImage(String)	Saves the barcode image to file.
	SaveImage(Stream, ImageFormat)	Saves the barcode image to specified stream.
	SaveImage(String, ImageFormat)	Saves the barcode image to file.
	SaveImage(Stream, ImageFormat, Size, Int32, Int32)	Saves the image with barcode into given stream.
	SaveImage(String, ImageFormat, Size, Int32, Int32)	Saves the barcode image to file.
	SaveViewState	(Inherited from WebControl.)
	SetAdditionalCaptionFont(String, Int32)	Sets the font of the additional barcode caption.
	SetAdditionalCaptionFont(String, Int32, Boolean, Boolean, Boolean, Boolean, Byte)	Sets the font of the barcode additional caption.
	SetBackColorRGB	Sets the background color in RGB format.
	SetBarHeight	Sets the height of the barcode bars in specified units.
	SetCaptionFont(String, Int32)	Sets the font of the barcode caption.
	SetCaptionFont(String, Int32, Boolean, Boolean, Boolean, Boolean, Byte)	Sets the font of the barcode caption font.
	SetCustomCaptionGap	Sets the gap size between the barcode and caption. To reset the gap to default (1/10 of caption font height) set gap to float.NaN.
	SetDesignModeState	(Inherited from Control.)
	SetForeColorRGB	Sets the fore color in RGB format.
	SetMargins	Sets the barcode margins in specified units.
	SetNarrowBarWidth	Sets the width of the narrow bars in specified units.
	SetRenderMethodDelegate	(Inherited from Control.)
	SetSmoothingMode	Sets the barcode rendering quality.
	ToString	(Inherited from Object.)
	TrackViewState	(Inherited from WebControl.)
	ValueIsValid(String)	Validates the value using current symbology rules.
	ValueIsValid(String, Boolean)	Validates the value using current symbology rules.
	ValueIsValidGS1	Validates the GS1 value using GS1 rules.

	Name	Description
	DataBinding	(Inherited from Control.)
	Disposed	(Inherited from Control.)
	Init	(Inherited from Control.)
	Load	(Inherited from Control.)
	PreRender	(Inherited from Control.)
	Unload	(Inherited from Control.)

To use BarcodeWebControl in a web application created without Visual Studio, you need to do two things:

1. First, you need to copy the Bytescout.BarCode.dll file to the bin subdirectory of your web application's virtual directory as registered with IIS. If you don't have a separate web application, you can copy it to C:\Inetpub\wwwroot\bin.
2. Next, you do need to modify the Web.config file in your application's virtual directory (or C:\Inetpub\wwwroot\ if you don't have a separate application), by adding,
   Copy

   <httpHandlers>
       <add verb="*" path="BarcodeHandler.aspx" type="Bytescout.BarCode.BarcodeHandler, Bytescout.BarCode"/>
   </httpHandlers>

   inside <system.web> section.

Note that there's no actual file called BarcodeHandler.aspx, but you can reference it within your application as a URL and you don't need to specify any path.

<img src="BarcodeHandler.aspx?symbology=Code128&value=DATA" />

For a full list of parameter names see the table below.

To use BarcodeWebControl in a web application created within Visual Studio, you need:

1. Add new web.config file if you don't have one.
2. Set up an HttpHandler in an ASP.NET web application by adding <httpHandler> section as written above.
3. Dag and drop BarcodeWebImage from toolbox to your web page. This will add the references to Bytescout.BarCode.dll to your project. You can fine tune added control appearance by means of Windows Forms designer.

Below is a table of BarcodeHandler.aspx parameters:

TypeConverter tc = TypeDescriptor.GetConverter(typeof(Font)); tc.ConvertToString(aFont);

TypeConverter tc = TypeDescriptor.GetConverter(typeof(Color)); tc.ConvertToString(aBackColor);

TypeConverter tc = TypeDescriptor.GetConverter(typeof(Font)); tc.ConvertToString(aFont);

TypeConverter tc = TypeDescriptor.GetConverter(typeof(Color)); tc.ConvertToString(aForeColor);

Reference