arcgis开发笔记【打印】

2022-06-25 01:05:25

Web打印

从网上找了一些关于asp.net打印的资料，参考“关于Web打印”，参考

http://cid-56b433ad3d1871e3.skydrive.live.com/self.aspx/.Public/%e5%85%b3%e4%ba%8eWEB%e6%89%93%e5%8d%b0.docx

最后选择了使用ReportViewer实现打印功能

arcgis silverlight内容的打印

实现思路：

silveilight程序中把页面中需要打印的对象转换成图形base64编码的字符流，提交到服务端

服务端处理程序把这些二进制字符流邦定到ReportViewer控件上，然后由ReportViewer实现打印的展现功能，具体如下：

HOST silverlight的页面

 <div style="visibility:hidden">

<form action="Rpt/print.aspx" method="post" enctype="application/x-www-form-urlencoded" target="_blank">

<input type="text" id="prText" name="prText" />

<input type="submit" id="prBtn" />

</form>

</div>

SilverLight提交打印请求

private void Button_Click(object sender, RoutedEventArgs e)    
{        
  WriteableBitmap bitmap = new WriteableBitmap(this.gridTest, new TranslateTransform());             EditableImage image = new EditableImage(bitmap.PixelWidth, bitmap.PixelHeight);       
 for (int i = 0; i < bitmap.PixelHeight; i++)       
 {           
 for (int j = 0; j < bitmap.PixelWidth; j++)            
{              
  int num3 = bitmap.Pixels[(bitmap.PixelWidth * i) + j];           
     image.SetPixel(j, i, (byte) ((num3 >> 0x10) & 0xff), (byte) ((num3 >> 8) & 0xff), (byte) (num3 & 0xff), (byte) ((num3 >> 0x18) & 0xff));           
 }     
   }    
    Stream stream = image.GetStream();      
  byte[] buffer = new byte[stream.Length];  
      long num4 = stream.Read(buffer, 0, (int) stream.Length);    
    string str = Convert.ToBase64String(buffer, 0, buffer.Length);        HtmlPage.Document.GetElementById("prText").SetProperty("value", str);        HtmlPage.Document.GetElementById("prBtn").Invoke("click", null);  
  }

打印页面和处理逻辑:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="print.aspx.cs" Inherits="GisSite.Rpt.PrintPreview" %>

<%@ Register assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" namespace="Microsoft.Reporting.WebForms" tagprefix="rsweb" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<rsweb:ReportViewer ID="ReportViewer1" runat="server" Width="100%" Height="600px">

</rsweb:ReportViewer>

</form>

</body>

</html>

// Methods

private void FillReport(string bytes64)

   byte[] imageBytes = Convert.FromBase64String(bytes64);

    printImg.ImageDataDataTable dt = new printImg.ImageDataDataTable();

     dt.AddImageDataRow(0, "print", imageBytes);

     this.ReportViewer1.LocalReport.ReportPath ="Rpt/print.rdlc";

    ReportDataSource src = new ReportDataSource("DSReportPrintImage_ImageData", dt);

    this.ReportViewer1.LocalReport.DataSources.Add(src);

    this.ReportViewer1.LocalReport.Refresh();

 protected void Page_Load(object sender, EventArgs e)

 if (!this.Page.IsPostBack)

       string bytes64 = base.Request["prText"];

       if (!string.IsNullOrEmpty(bytes64))

           this.FillReport(bytes64);

print .RDLC文件

<?xml version="1.0" encoding="utf-8"?>

<rd:DataSourceID>6dde20a2-6fdf-4054-a23d-0135e6a9e8a4</rd:DataSourceID>

</ConnectionProperties>

</DataSource>

</DataSources>

<rd:DrawGrid>true</rd:DrawGrid>

<rd:SnapToGrid>true</rd:SnapToGrid>

<rd:ReportID>66b0e21f-4a8d-4b4e-b652-d28cb44e05e4</rd:ReportID>

<DataField>ImageId</DataField>

<rd:TypeName>System.Int32</rd:TypeName>

</Field>

<DataField>ImageName</DataField>

<rd:TypeName>System.String</rd:TypeName>

</Field>

<DataField>ImageBytes</DataField>

<rd:TypeName>System.Byte[]</rd:TypeName>

</Field>

</Fields>

<Query>

<DataSourceName>DummyDataSource</DataSourceName>

<rd:UseGenericDesigner>true</rd:UseGenericDesigner>

</Query>

<rd:DataSetInfo>

<rd:DataSetName>DSReportPrintImage</rd:DataSetName>

<rd:TableName>ImageData</rd:TableName>

</rd:DataSetInfo>

</DataSet>

</DataSets>

<Body>

<DataSetName>DSReportPrintImage_ImageData</DataSetName>

<Sizing>AutoSize</Sizing>

<MIMEType>image/png</MIMEType>

<Source>Database</Source>

<Value>=Fields!ImageBytes.Value</Value>

</Image>

</ReportItems>

</List>

</ReportItems>

</Body>

</Report>

码农公寓

Web打印

arcgis silverlight内容的打印

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