DrawToBitmap Method

Supports rendering to the bitmap.

Syntax

public string DrawToBitmap( 
   bool isImage,
   string hash
)

Parameters

isImage

Type: System.Boolean

true if the tag of this of the element is "img", otherwise, false.

hash

Type: System.String

The parameter use only in demo version. Default value is String.Empty.

Return Value

Type: System.String

The image as a string value.

Remarks

If the html element has the tag "img" and the method's parameter is true, then this method executes faster.

Example

The following code example demonstrates uses of the DrawToBitmap method

// find element by attribute
HtmlElement he = instance.GetTabByAddress("page").GetDocumentByAddress("0").FindElementByAttribute("input:checkbox", "fulltag", "input:checkbox", "text", 0);
 
// draw to bitmap element, this element is not image and does not contain image
string toBitmap1 = he.DrawToBitmap(false);
 
// find element by attribute
he = instance.GetTabByAddress("page").GetDocumentByAddress("0").FindElementByAttribute("a", "href", "http://lessons.zennolab.com/ru/index", "regexp", 0);
 
// draw to bitmap element, this element is image or contains image
string toBitmap2 = he.DrawToBitmap(true);

// find element by attribute
$he = $instance->GetTabByAddress("page")->GetDocumentByAddress("0")->FindElementByAttribute("input:checkbox", "fulltag", "input:checkbox", "text", 0);
 
// draw to bitmap element, this element is not image and does not contain image
$toBitmap1 = $he->DrawToBitmap(false);
 
// find element by attribute
$he = $instance->GetTabByAddress("page")->GetDocumentByAddress("0")->FindElementByAttribute("a", "href", "http://lessons.zennolab.com/ru/index", "regexp", 0);
 
// draw to bitmap element, this element is image or contains image
$toBitmap2 = $he->DrawToBitmap(true);

Requirements

Target Platforms: Desktop: Windows XP SP3 and older. Server: Windows Server 2003 and older.

Reference

HtmlElement Class
HtmlElement Members
DrawPartToBitmap Method
DrawPartAsBitmap Method
DrawAsBitmap Method
FindChildByAttribute Method
FindChildById Method
FindChildByName Method
FindChildByTag Method
FindChildByXPath Method