reportViewer To printDocument Print (Single_Page)

最新推荐文章于 2020-07-31 15:19:01 发布

原创最新推荐文章于 2020-07-31 15:19:01 发布 · 2k 阅读

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CC 4.0 BY-SA版权

文章标签：

#warnings #stream #string #encoding #function #object

本文介绍了一种使用C#实现的报表打印方案，通过设置报表查看器的显示模式和缩放比例，结合图像渲染功能，将报表内容转换为图像并进行多页打印。涉及的技术包括数据绑定、报表加载及外部图片支持。

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//this.Class2BindingSource.DataSource = typeof(List<Test0.Class2>);
this.Class2BindingSource.DataSource = print;

            this.reportViewer2.LocalReport.EnableExternalImages = true; //打开图片支持
            this.reportViewer2.LocalReport.ReportEmbeddedResource = @"Test0.Report2.rdlc"; //加载报表
            this.reportViewer2.SetDisplayMode(DisplayMode.PrintLayout);

            this.reportViewer2.ZoomMode = ZoomMode.Percent;
            this.reportViewer2.ZoomPercent = 100;
            //this.reportViewer2.Refresh();

           string DeviceInfo = "<DeviceInfo><OutputFormat>EMF</OutputFormat></DeviceInfo>";
            Warning[] warnings;
            this.reportViewer2.LocalReport.Render("Image", DeviceInfo, CreateStream, out warnings);

printDocument1.Print();

}

//CreateStream Function:

private System.IO.Stream metafile_streams = new System.IO.MemoryStream();

        private System.IO.Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
        {
            System.IO.Stream stream = new System.IO.MemoryStream();
            metafile_streams = stream;
            return stream;
        }

//printDocument1 Code:

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{

metafile_streams.Position = 0;
System.Drawing.Imaging.Metafile pageImage = new System.Drawing.Imaging.Metafile(metafile_streams);

e.Graphics.DrawImage(pageImage, 0, 0);
m_streams.Close();

}

//multi-page Print:

TBC...