使用asp.net打印客户端打印机上的文本文件的内容

Question

我正在服务器上传文本文件。

当用户点击打印按钮时，我希望使用他/她的打印机打印文件。

当前我正在使用下面的代码，但它是用于服务器端打印。

Protected Sub btnPrint_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnPrint.Click 

     Dim fileName As String = "" 

     For x As Integer = 0 To FileImageList.Count - 1 

      If FileImageList(x).parent.backcolor = Drawing.Color.Orange Then 
       fileName = FileNameList(x).text 
      End If 

     Next 

     ReadFile(fileName, Server.MapPath("~\Medical\Users\" & Session("DocumentUploader") & "\Uploaded\")) 
     printDocument1.Print() 

    End Sub 

Private Sub printDocument1_PrintPage(ByVal sender As Object, _ 
     ByVal e As PrintPageEventArgs) 

     Dim charactersOnPage As Integer = 0 
     Dim linesPerPage As Integer = 0 
     Dim font As System.Drawing.Font = New Font("Times New Roman", 14, FontStyle.Regular, GraphicsUnit.Pixel) 

     ' Sets the value of charactersOnPage to the number of characters 
     ' of stringToPrint that will fit within the bounds of the page. 
     e.Graphics.MeasureString(stringToPrint, font, e.MarginBounds.Size, _ 
      StringFormat.GenericTypographic, charactersOnPage, linesPerPage) 

     ' Draws the string within the bounds of the page 
     e.Graphics.DrawString(stringToPrint, font, Brushes.Black, _ 
      e.MarginBounds, StringFormat.GenericTypographic) 

     ' Remove the portion of the string that has been printed. 
     stringToPrint = stringToPrint.Substring(charactersOnPage) 

     ' Check to see if more pages are to be printed. 
     e.HasMorePages = stringToPrint.Length > 0 

    End Sub 

Answer 1

使用JavaScript print function的window对象。