c# - FastReport export to image in multipage reports

Question

I want to export a multi page report (FastReport) to image

var stream = new MemoryStream();
rpt.Export(new ImageExport(), result);

reports with one page is OK, but multipage reports have this error :

empty path name is not legal

Have any idea to solve this?!

Answer 1

您应该使用路径，而不是流。

路径示例：

using (FastReport.Report report = new FastReport.Report())
{
    report.Load(@"C:\test.frx");

    report.Prepare();                               
    report.Export(new FastReport.Export.Image.ImageExport(), "myReport.png");             
}

当报告超过一页时，将创建以下文件：

myReport.png
myReport.2.png
myReport.3.png
...

这是带有流的解决方案。您应该设置PageRange = PageRange.Current并设置CurPage为适当的值：

int count = 1;
using (FastReport.Report report = new FastReport.Report())
{
    report.Load(@"C:\test.frx");
    report.Prepare();

    foreach (PageBase item in report.Pages)
    {
        string fileName = string.Format("myReport_{0}.png", count);
        report.Export(new FastReport.Export.Image.ImageExport() { PageRange = PageRange.Current, CurPage = count }, fileName);
        count++;
    }
}