水晶报表文件导出方法小结

近期在做水晶报表时，作者用到了水晶报表文件导出功能。在网上一搜，资料还真多，这些资料不仅多，而且非常的杂乱，让人看得非常不舒服。于是在此将其作了一点汇总和整理，以供大家参考。写的不好，请多包涵。

命名空间：

 

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

 

 

方法一，利用ReportDocument对象的ExportToDisk方法。

具体代码为：

 

protected void btnExport1_Click(object sender, EventArgs e)
    {
        string FileName = Session.SessionID + "." + ddlFileType.SelectedValue;
        string FilePath = Request.MapPath(".") + "/ReportFile/".Replace(@"/", @"\") + FileName;

        ReportDocument Document = new ReportDocument(); 
        
        Document.Load(Server.MapPath("CrystalReport.rpt"));
        Document.SetDataSource(GetReportDataSource()); 
        
        this.CrystalReportViewer1.ReportSource = Document;

        //设置导出文件格式
        ExportFormatType exprotFormatType = ExportFormatType.NoFormat;
        switch (ddlFileType.SelectedValue.ToLower())
        {
            case "pdf":
                exprotFormatType = CrystalDecisions.Shared.ExportFormatType.PortableDocFormat;
                break;
            case "doc":
                exprotFormatType = CrystalDecisions.Shared.ExportFormatType.WordForWindows;
                break;
            case "xls":
                exprotFormatType = CrystalDecisions.Shared.ExportFormatType.Excel;
                break;
            default:
                break;
        }

        try
        {
            //导出操作
            Document.ExportToDisk(exprotFormatType, FilePath);
            ExportFile(FileName, FilePath);
            System.IO.File.Delete(FilePath);
        }
        catch (Exception ex)
        {
            string jsError = "alert('" + ex.Message + "');";
            ScriptManager.RegisterStartupScript(this, this.GetType(), "ExportReport", jsError, true);
        }
    }


protected void ExportFile(string exportFileName, string filePath)
    {
        FileInfo fileInfo = new FileInfo(filePath);
        if (fileInfo.Exists == true)
        {
            Response.Clear();
            Response.AddHeader("Content-Disposition", "attachment;filename=" + exportFileName);
            Response.AddHeader("Content-Length", fileInfo.Length.ToString());
            Response.AddHeader("Content-Transfer-Encoding", "binary");
            Response.ContentType = "application/octet-stream";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
            Response.WriteFile(fileInfo.FullName);
            Response.Flush();
            Response.End();
        }
    }