private void exportTargetFile(string id, string ext, string type, ReportViewer rv, ReportSettings settings)
{
var tempImagePath = Path.Combine(Path.GetTempPath(), id + ext);
var dir = Path.GetDirectoryName(tempImagePath);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir ?? throw new InvalidOperationException());
}
var fileBuffer = rv.LocalReport.Render(type, settings.IsChanged() ? settings.ToString() : null);
File.WriteAllBytes(tempImagePath, fileBuffer);
}
private void OutputGenerate(ControllerContext context)
{
var reportFile = context.HttpContext.Server.MapPath(_reportFile);
var oldReport = context.HttpContext.Request.QueryString["__oldrdlReport"];
DeletePreGeneratedFile(oldReport);
if (!File.Exists(reportFile))
{
OutputJson(new GenerateReasult
{
Code = 1,
Message = "报表" + _reportFile + "不存在！"
}, context);
return;
}
var rv = new ReportViewer();
rv.LocalReport.ReportPath = reportFile;
var settings = new ReportSettings();
if (_reportBuilder != null)
{
try
{
_reportBuilder(rv.LocalReport, settings);
}
catch (Exception ex)
{
OutputJson(new GenerateReasult
{
Code = 2,
Message = ex.Message
}, context);
return;
}
}
try
{
rv.LocalReport.Refresh();
var reportFileId = Guid.NewGuid().ToString();
var img = _exportFiles.ElementAt(0);
exportTargetFile(reportFileId, img.Value, img.Key, rv, settings);
Task.Factory.StartNew(args =>
{
try
{
if (!(args is Tuple <string, ReportViewer, ReportSettings> tuple))
{
return;
}
for (var i = 1; i < _exportFiles.Count; i++)
{
var cfg = _exportFiles.ElementAt(i);
exportTargetFile(tuple.Item1, cfg.Value, cfg.Key, tuple.Item2, tuple.Item3);
}
}
// ReSharper disable once EmptyGeneralCatchClause
catch
{
}
}, new Tuple <string, ReportViewer, ReportSettings>(reportFileId, rv, settings));
var tiffImg = Image.FromFile(Path.Combine(Path.GetTempPath(), reportFileId + ".tif"));
var guid = tiffImg.FrameDimensionsList[0];
var dimension = new FrameDimension(guid);
var pageCount = tiffImg.GetFrameCount(dimension);
tiffImg.Dispose();
OutputJson(new GenerateReasult
{
Code = 0,
FileId = reportFileId,
PageCount = pageCount,
DownloadName = settings.DownLoadFileName
}, context);
}
catch (Exception ex)
{
OutputJson(new GenerateReasult
{
Code = 3,
Message = GetFirstExceptionMessage(ex)
}, context);
}
}