Imports System.Drawing.Printing
Namespace X
Partial Public Class PrintSomething
Dim PD As PrintDocumentDim ppc As New Printing.PreviewPrintController()
Dim TotalPage As Int32 = 0
''' <summary>
''' 第幾次列印, 用來控制寫出的圖檔
''' </summary>
''' <remarks></remarks>
Dim PrintCount As Int32 = 1Dim PageCount As Int32 = 1
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Sub New(ByVal oPM As DB.PackingListMain, ByVal dtDetail As DataTable, dtUsedCoupon As DataTable)
'初始化資料
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End SubSub InitPrintDocument()
'在這裡設定 PrintDocument 的紙張, 印表機, 邊界, 橫印或直印PD = New PrintDocument
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:End Sub
Sub print()
InitPrintDocument()PD.PrintController = ppc
' 第一次先把列印結果存在 Printing.PreviewPrintController 中
AddHandler PD.PrintPage, AddressOf GeneratePreview'再來儲存圖片
AddHandler PD.EndPrint, AddressOf SaveImagePD.Print()
End Sub
Dim ppi() As Printing.PreviewPageInfo
Dim PrintPage As Int32 = 0Sub SaveImage(ByVal sender As Object, ByVal ev As PrintEventArgs)
PrintDebug("Save Image Start, " & Now.ToString("yyyy-MM-dd HH:mm:ss.fff"))
'把圖檔存起來
Dim TF As String = Now.ToString("yyyyMMddHHmmss") ' DB.SysConfig.Path.LocalDataRoot
Dim PathLocal As String = "C:\PrintLog\" & TF.Substring(0, 4) & "-" & TF.Substring(4, 2) & "\"
Dim PathPackingListSheetImage As String = DB.SysConfig.PackingListSheetImage & TF.Substring(0, 4) & "-" & TF.Substring(4, 2) & "\"System.IO.Directory.CreateDirectory(PathLocal)
System.IO.Directory.CreateDirectory(PathPackingListSheetImage)Dim LatestImages As String = ""
ppi = ppc.GetPreviewPageInfo()For x As Integer = 0 To ppi.Length - 1
Dim Filename As String = TF & "_" & Me.oPM.Id & "_" & x & ".png"ppi(x).Image.Save(PathLocal & Filename, System.Drawing.Imaging.ImageFormat.Png)
Next
'把圖檔印出來
For x As Integer = 0 To ppi.Length - 1
'建立新的 PrintDocument
InitPrintDocument()If CST.WebConfig.Server_NAME = "測試主機" Then
UW.WU.DebugWriteLine("PrinterName: " & Me.PD.PrinterSettings.PrinterName)
UW.WU.DebugWriteLine("PaperSize: " & PD.DefaultPageSettings.PaperSize.PaperName)PD.DocumentName = "PackingList"
PD.PrinterSettings.PrintFileName = "C:\PDF\PackingList" & Now.ToString("yyyyMMddHHmmss") & "_" & PrintPage & ".prn"
PD.PrinterSettings.PrintToFile = True'PD.PrinterSettings.
End If'很奇怪, 這裡不會分頁, 所以要一張一張印
AddHandler PD.PrintPage, AddressOf pd_PrintPage2
PD.Print()
PrintPage += 1Next
End SubPrivate Sub pd_PrintPage2(ByVal sender As Object, ByVal ev As PrintPageEventArgs)
'很奇怪, 這裡不會分頁, 所以要一張一張印
ev.Graphics.DrawImage(ppi(PrintPage).Image, 0, 0)
ev.HasMorePages = False
End Sub
Private Sub GeneratePreview(ByVal sender As Object, ByVal ev As PrintPageEventArgs)
' 列印內容
End SubEnd Class
End ClassEnd Namespace
在 IE 中很簡單就能辦到, 至於其他的瀏覽器......目前還沒這個需求, 先擱著~~~~~
var img = document.getElementsByTagName("IMG")[0]; var rng = document.body.createControlRange(); rng.add(img); rng.execCommand('Copy');真是簡單到不行! 可以看出 Microsoft 當初那群規劃設計 IE 的人實在是太厲害了!!
資料來源：http://www.dotblogs.com.tw/demarco/archive/2010/08/03/16980.aspx
為了減輕server loading
圖片的顯示 加上了JQuery外掛 Lazy Load
讓圖片延遲載入
瀏覽器 拉到該可視範圍內
圖片才載入
前提必須有jquery
接著需下載
queryLoader.js
jquery.lazyload.mini.js
塞進所用呈現的檔案內
<head>
<title>test</title>
<script type="text/javascript" src="jquery-1.2.6.pack.js"></script>
<link rel="stylesheet" href="queryLoader.css" type="text/css" />
<script type='text/javascript' src='jquery.lazyload.mini.js'></script>
</head>
並加上
<script type="text/javascript">
$("img").lazyload({ effect: "fadeIn" });
</script>
img就是html的
<img src="/images/001.gif" />
下載Lazy Load網址：http://www.appelsiini.net/projects/lazyload