MVC+RDLC報表+PrintPreviewDialog(winform控件)打印、打印預覽？！

本文轉載自查看原文 2017-03-06 17:19 1589

此文出現MVC，就是網頁上調用winform打印控件PrintPreviewDialog，好詭異，出線了！
好了，開始。。。。
首先你要做一個報表：RDLC （微軟的東東）

當然這個微軟的RDLC需要配置一個數據源xsd（不用鏈接數據庫，我這就是手動在數據源里面創建個table對象而已），

然后需要一個aspx頁面來顯示這個報表

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TongJi.aspx.cs" Inherits="Jaya.Web.Reports.TongJi" ValidateRequest="false" %>

<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>

<!DOCTYPE html>

</head>

<body>

<asp:DropDownList ID="DropDownList1" runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">

<asp:ListItem Value="100" Text="100"></asp:ListItem>

<asp:ListItem Value="80" Text="80"></asp:ListItem>

<asp:ListItem Value="50" Text="50"></asp:ListItem>

<asp:ListItem Value="30" Text="30"></asp:ListItem>

</asp:DropDownList>

<asp:Button ID="Button13" runat="server" Text="打印" OnClick="Button2_Click" />

<asp:Button ID="Button1" runat="server" Text="刷新" OnClick="Button7_Click" />

<asp:Button ID="Button2" runat="server" Text="首頁" OnClick="Button8_Click" />

<asp:Button ID="Button3" runat="server" Text="上一頁" OnClick="Button9_Click" />

<asp:Button ID="Button4" runat="server" Text="下一頁" OnClick="Button10_Click" />

<asp:Button ID="Button5" runat="server" Text="尾頁" OnClick="Button11_Click" />

<asp:Button ID="Button6" runat="server" Text="導出EXCEL" OnClick="Button5_Click" />

<asp:Button ID="Button7" runat="server" Text="導出圖片" OnClick="Button4_Click" />

<asp:Button ID="Button8" runat="server" Text="導出PDF" OnClick="Button3_Click" />

<asp:Button ID="Button9" runat="server" Text="導出WORD" OnClick="Button6_Click" />

<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

<rsweb:ReportViewer ID="ReportViewer1" runat="server" Font-Names="Verdana" Font-Size="8pt" WaitMessageFont-Names="Verdana" WaitMessageFont-Size="14pt" Width="680px" Height="670px">

</LocalReport>

</rsweb:ReportViewer>

</div>

</form>

</body>

</html>

-----------------------華麗的分割線上面是前台代碼下面是后台代碼------------------------

public enum FileType

{

PDF = 0,

Image = 1,

Excel = 2,

Word = 3

}

public partial class TongJi : System.Web.UI.Page

{

DataTable dt1 = null;

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

string rpath;

Hashtable ht = new Hashtable();

DataTable dt = GetData(out rpath, ref ht);

ReportDataSource rds = new ReportDataSource("DataSet1", dt);//真數據源

ReportViewer1.LocalReport.DataSources.Clear();

ReportViewer1.LocalReport.DataSources.Add(rds);

List<ReportParameter> rps = new List<ReportParameter>();

foreach (var item in ht.Keys)//自定義報表需要的參數

{

ReportParameter rp1 = new ReportParameter(item.ToString(), ht[item].ToString());

rps.Add(rp1);

}

//ReportParameter rp1 = new ReportParameter("kskm", "123");

//ReportParameter rp2 = new ReportParameter("rq", "123");

ReportViewer1.LocalReport.SetParameters(rps.ToArray());

ReportViewer1.LocalReport.ReportPath = "Reports\\" + rpath + ".rdlc";//rep_examroom

ReportViewer1.LocalReport.Refresh();

ReportViewer1.DataBind();

}

private DataTable GetData(out string rpath, ref Hashtable ht)

{

string jsondata = Request["jsondata"];//必傳數據json

rpath = Request["rpath"];//必傳數據報表路徑

foreach (string key in Request.QueryString.AllKeys)//自定義參數

{

if (key != "rpath" && key != "jsondata")

{

ht.Add(key, Request[key].ToString());

}

DataTable dt = Common.CuryHelp.JsonToDataTable(jsondata);//json字符串轉換DataTable對象

return dt;

}

/// <summary>

/// 打印

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button2_Click(object sender, EventArgs e)

{

string rpath;

Hashtable ht = new Hashtable();

DataTable dt2 = GetData(out rpath, ref ht);

new PrintHelp().Run(AppDomain.CurrentDomain.BaseDirectory + "\\Reports\\" + rpath + ".rdlc", dt2, "DataSet1", ht);

}

/// <summary>

/// 刷新

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button7_Click(object sender, EventArgs e)

{

this.ReportViewer1.LocalReport.Refresh();

}

/// <summary>

/// 首頁

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button8_Click(object sender, EventArgs e)

{

this.ReportViewer1.CurrentPage = 1;

}

/// <summary>

/// 上一頁

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button9_Click(object sender, EventArgs e)

{

if (this.ReportViewer1.CurrentPage != 1)

{

this.ReportViewer1.CurrentPage--;

}

/// <summary>

/// 下一頁

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button10_Click(object sender, EventArgs e)

{

if (this.ReportViewer1.CurrentPage != this.ReportViewer1.LocalReport.GetTotalPages())

{

this.ReportViewer1.CurrentPage++;

}

/// <summary>

/// 尾頁

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void Button11_Click(object sender, EventArgs e)

{

this.ReportViewer1.CurrentPage = this.ReportViewer1.LocalReport.GetTotalPages();

}

/// <summary>

/// 縮放

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

{

this.ReportViewer1.ZoomMode = ZoomMode.Percent;

this.ReportViewer1.ZoomPercent = Convert.ToInt32(this.DropDownList1.SelectedValue);

}

protected void Button3_Click(object sender, EventArgs e)

{

ExportFile(FileType.PDF, "out.pdf");

}

protected void Button4_Click(object sender, EventArgs e)

{

ExportFile(FileType.Image, "out.jpeg");//這里可以使用任意的圖片格式只要修改out.jpeg為其他格式的名字就可以了

}

protected void Button5_Click(object sender, EventArgs e)

{

ExportFile(FileType.Excel, "out.xls");

}

protected void Button6_Click(object sender, EventArgs e)

{

ExportFile(FileType.Word, "out.doc");

}

#region 導出文件

private void ExportFile(FileType ft, string filename)

{

CreateFile(ft, filename);

string strPath = Server.MapPath(filename);

DownloadFile(strPath, filename);

}

private void CreateFile(FileType ft, string filename)

{

Warning[] warnings;

string[] streamids;

string mimeType;

string encoding = "utf-8";

string extension;

byte[] bytes = this.ReportViewer1.LocalReport.Render(ft.ToString(), null, out mimeType,

out encoding, out extension, out streamids, out warnings);

FileStream fs = new FileStream(HttpContext.Current.Server.MapPath(filename), FileMode.Create);

fs.Write(bytes, 0, bytes.Length);

fs.Close();

fs.Dispose();

}

public void DownloadFile(string path, string name)

{

try

{

System.IO.FileInfo file = new System.IO.FileInfo(path);

Response.Clear();

Response.Charset = "utf-8";

Response.ContentEncoding = System.Text.Encoding.UTF8;

// 添加頭信息，為"文件下載/另存為"對話框指定默認文件名

Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(name));

// 添加頭信息，指定文件大小，讓瀏覽器能夠顯示下載進度

Response.AddHeader("Content-Length", file.Length.ToString());

// 指定返回的是一個不能被客戶端讀取的流，必須被下載

Response.ContentType = "application/octet-stream";

// 把文件流發送到客戶端

Response.WriteFile(file.FullName);

// 停止頁面的執行

HttpContext.Current.ApplicationInstance.CompleteRequest();

}

catch (Exception ex)

{

Response.Write("<script>alert('系統出現以下錯誤://n" + ex.Message + "!//n請盡快與管理員聯系.')</script>");

}

#endregion

}

-----------------------------------------------是不是有點多，沒關系無腦復制即可有錯就刪掉它！----------
需要一個幫助類已經封裝好（當然你也可以根據自己需要修改擴展）：

/// <summary>

/// PrintHelp 的摘要描述

/// </summary>

public class PrintHelp

{

private int m_currentPageIndex;

private IList<Stream> m_streams;

/// <summary>

///

/// </summary>

/// <param name="reportPath">報表路徑</param>

/// <param name="printerName">打印機名稱（使用默認打印機，不賦值）</param>

/// <param name="dt1">報表數據源1</param>

/// <param name="dt1SourceName">報表中數據源1對應名稱</param>

/// <param name="dt2">報表數據源2</param>

/// <param name="dt2SourceName">報表中數據源2對應名稱</param>

public void Run(string reportPath, string printerName, DataTable dt1, string dt1SourceName, DataTable dt2, string dt2SourceName, bool isHindeLogo)

{

LocalReport report = new LocalReport();

report.ReportPath = reportPath;//加上報表的路徑

report.DataSources.Add(new ReportDataSource(dt1SourceName, dt1));

report.DataSources.Add(new ReportDataSource(dt2SourceName, dt2));

report.EnableExternalImages = true;

ReportParameter rp = new ReportParameter("isHindeLogoImg", isHindeLogo.ToString());//這里我在報表里弄的參數

report.SetParameters(rp);

Export(report);

m_currentPageIndex = 0;

Print(printerName);

}
//我用的是下面這個方法方法按自己的需要去修改封裝

public void Run(string reportPath, DataTable dt1, string dt1SourceName,Hashtable ht )

{

LocalReport report = new LocalReport();

report.ReportPath = reportPath;//加上報表的路徑

report.DataSources.Add(new ReportDataSource(dt1SourceName, dt1));

report.EnableExternalImages = true;

List<ReportParameter> rps = new List<ReportParameter>();

foreach (var item in ht.Keys)

{

ReportParameter rp1 = new ReportParameter(item.ToString(), ht[item].ToString());

rps.Add(rp1);

}

report.SetParameters(rps);

Export(report);

m_currentPageIndex = 0;

Print("");

}

private void Export(LocalReport report)

{

string deviceInfo =

"<DeviceInfo>" +

" <OutputFormat>EMF</OutputFormat>" +

" <PageWidth>210mm</PageWidth>" +

" <PageHeight>297mm</PageHeight>" +

" <MarginTop>5mm</MarginTop>" +

" <MarginLeft>10mm</MarginLeft>" +

" <MarginRight>10mm</MarginRight>" +

" <MarginBottom>5mm</MarginBottom>" +

"</DeviceInfo>";//這里是設置打印的格式邊距什么的

Warning[] warnings;

m_streams = new List<Stream>();

try

{

report.Render("Image", deviceInfo, CreateStream, out warnings);//一般情況這里會出錯的使用catch得到錯誤原因一般都是簡單錯誤

}

catch (Exception ex)

{

Exception innerEx = ex.InnerException;//取內異常。因為內異常的信息才有用，才能排除問題。

while (innerEx != null)

{

//MessageBox.Show(innerEx.Message);

string errmessage = innerEx.Message;

innerEx = innerEx.InnerException;

}

foreach (Stream stream in m_streams)

{

stream.Position = 0;

}

private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)

{

//name 需要進一步處理

Stream stream = new FileStream(name + DateTime.Now.Millisecond + "." + fileNameExtension, FileMode.Create);//為文件名加上時間

m_streams.Add(stream);

return stream;

}

private void Print(string printerName)

{

//string printerName = this.TextBox1.Text.Trim();// "傳送至 OneNote 2007";

if (m_streams == null || m_streams.Count == 0)

return;

PrintDocument printDoc = new PrintDocument();

// string aa = printDoc.PrinterSettings.PrinterName;

if (printerName.Length > 0)

{

printDoc.PrinterSettings.PrinterName = printerName;

}

foreach (PaperSize ps in printDoc.PrinterSettings.PaperSizes)

{

if (ps.PaperName == "A4")

{

printDoc.PrinterSettings.DefaultPageSettings.PaperSize = ps;

printDoc.DefaultPageSettings.PaperSize = ps;

// printDoc.PrinterSettings.IsDefaultPrinter;//知道是否是預設定的打印機

}

if (!printDoc.PrinterSettings.IsValid)

{

string msg = String.Format("Can't find printer " + printerName);

System.Diagnostics.Debug.WriteLine(msg);

return;

}

printDoc.PrintPage += new PrintPageEventHandler(PrintPage);

PrintPreview(printDoc);//這個地方測試打印預覽這個地方很詭異他會在網頁上彈出winform 有木有？當然這個窗口在網頁后面，需要alt+tab切一下看到啦（藏得深，怕你找不到）。。。。

//printDoc.Print();//這地方是直接打印放開注釋就是直接去打印機打印啦

}

//下面是測試用的三種打印預覽都是winform控件哦

private void RuntimeDialog(PrintDocument pDoc)

{

PrintPreviewDialog pPDlg;

pPDlg = new PrintPreviewDialog();

pPDlg.Document = pDoc;

pPDlg.WindowState = FormWindowState.Normal;//設置窗口

pPDlg.PrintPreviewControl.Zoom = 1.0;//設置百分比大小

pPDlg.PrintPreviewControl.Columns = 1;

pPDlg.ShowDialog();

//pPDlg.Dispose();

}

private void PrintPreviewControl(PrintDocument pDoc)

{

Form formPreview = new Form();

PrintPreviewControl previewControl = new PrintPreviewControl();

previewControl.Document = pDoc;

previewControl.StartPage = 1;

formPreview.WindowState = FormWindowState.Normal;

formPreview.Controls.Add(previewControl);

formPreview.Controls[0].Dock = DockStyle.Fill;

formPreview.ShowDialog();

//formPreview.Dispose();

}

private void PrintPreview(PrintDocument pDoc)

{

PrintPreviewDialog pPDlg;

pPDlg = new PrintPreviewDialog();

PrintPreviewControl previewControl = new PrintPreviewControl();

//設置頁面的預覽的頁碼

//設置顯示頁面顯示的大小(也就是原頁面的倍數)

pPDlg.PrintPreviewControl.StartPage = 0;

pPDlg.PrintPreviewControl.Zoom = 1.0;

//設置或返回窗口狀態，即該窗口是最小化、正常大小還是其他狀態。

pPDlg.WindowState = FormWindowState.Maximized;

//設置和獲取需要預覽的文檔

//將窗體顯示為指定者的模式對話框

pPDlg.Document = pDoc;

pPDlg.ShowDialog();

}

private void PrintPage(object sender, PrintPageEventArgs ev)

{

Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);

ev.Graphics.DrawImage(pageImage, 0, 0, 827, 1169);//設置打印尺寸單位是像素

m_currentPageIndex++;

ev.HasMorePages = (m_currentPageIndex < m_streams.Count);

}

}
======================好了下面開始MVC部分
需要一個視圖然后寫一個ajax 去后台獲取數據（相信這部分都會把）然后拿到數據后用js拼接一個iframe把上面的那個aspx頁面嵌套到你的mvc頁面中來，具體可以參考下面代碼（其中用到了json字符串地址欄傳輸，到那邊可以用一個方法把json字符串轉換城DataTable），下面提供轉換代碼。注意我封裝后的傳參（可以修改自己需要的，下面代碼僅供參考，無腦復制肯定不行的）
有幾個重要參數：rpath是調用的報表文件名稱，jsondata是需要傳送的數據（可以理解為真數據源），其它都是自定義參數，按照你報表上需要的參數自己設置。
（至於后台如何把數據轉換json傳到前台，別的日志里面有，至於前台怎么把json對象轉換成json字符串，請使用JSON2.js）

function chaxun() {

var _cd1 = $('#d1').val();

var _cd2 = $('#d2').val();

if (_cd1 != "" && _cd2 != "") {

$.post('/Drv_statistics/TJ_ExamRoomPost', { kskm: $('#_km').val(), d1: _cd1, d2: _cd2 }, function (data) {

//接收參數

var _d1 = data.Date1;

var _d2 = data.Date2;

//組織報表需要變量

var _km = data.KM;

var _rq = _d1 + " 至 " + _d2;

//要使用的報表名稱

var _rpath = "rep_examroom";

//報表要使用的數據

var str_json = JSON.stringify(data.JData);

var strhtml = "<iframe width='700' height='650' id='' src='/Reports/TongJi.aspx?rpath=" + _rpath + "&kskm=" + _km + "&rq=" + _rq + "&jsondata=" + str_json + "' frameborder='no' border='0' marginwidth='0' marginheight='0' scrolling='no' allowtransparency='yes' style='overflow:hidden;height:700px'></iframe>";

$('#_ifmdiv').html(strhtml);

})

}

}
==================================== json to DataTable

/// <summary>

/// 將json轉換為DataTable

/// </summary>

/// <param name="strJson">得到的json</param>

/// <returns></returns>

public static DataTable JsonToDataTable(string strJson)

{

//轉換json格式

strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();

//取出表名

var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);

string strName = rg.Match(strJson).Value;

DataTable tb = null;

//去除表名

strJson = strJson.Substring(strJson.IndexOf("[") + 1);

strJson = strJson.Substring(0, strJson.IndexOf("]"));

//獲取數據

rg = new Regex(@"(?<={)[^}]+(?=})");

MatchCollection mc = rg.Matches(strJson);

for (int i = 0; i < mc.Count; i++)

{

string strRow = mc[i].Value;

string[] strRows = strRow.Split('*');

//創建表

if (tb == null)

{

tb = new DataTable();

tb.TableName = strName;

foreach (string str in strRows)

{

var dc = new DataColumn();

string[] strCell = str.Split('#');

if (strCell[0].Substring(0, 1) == "\"")

{

int a = strCell[0].Length;

dc.ColumnName = strCell[0].Substring(1, a - 2);

}

else

{

dc.ColumnName = strCell[0];

}

tb.Columns.Add(dc);

}

tb.AcceptChanges();

}

//增加內容

DataRow dr = tb.NewRow();

for (int r = 0; r < strRows.Length; r++)

{

dr[r] = strRows[r].Split('#')[1].Trim().Replace("，", ",").Replace("：", ":").Replace("\"", "");

}

tb.Rows.Add(dr);

tb.AcceptChanges();

}

return tb;

}
================================ 效果圖。。

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