Add some existing examples

dotnet/uniconta/CreateCustomReport.cs

@@ -0,0 +1,60 @@
+public async Task CreateCustomOfferReport(CrudAPI api, GiftProject giftProject)
+{
+    var reportName = "Offerte 3";
+    var report = await LoadReport(api, reportName);
+
+    var order = ConvertProjectToOrder(giftProject);
+
+    report.DataSource = new List()
+    {
+        new UnicontaMasterDetail()
+        {
+            Master = order,
+            Details = order.OfferLines.ToArray()
+        }
+    };
+
+    var stream = new MemoryStream();
+    var pdfOptions = new PdfExportOptions();
+    await report.ExportToPdfAsync(stream, pdfOptions);
+    stream.Position = 0;
+    var data = stream.ToArray();
+    var fileName = "Offerte 123";
+    var attachment = new UserDocsClient()
+    {
+        _Data = data,
+        _Text = fileName,
+        _DocumentType = FileextensionsTypes.PDF
+    };
+    return attachment;
+}
+
+private static async Task LoadReport(CrudAPI api, string reportName)
+{
+    var apiWrapper = new ApiWrapper(api);
+
+    var reports = await apiWrapper.Filter()
+        .WhereEqual(x => x.Name, reportName)
+        .Run();
+    var reportRow = reports.FirstOrDefault();
+    if (reportRow == null)
+        throw new Exception($"Kon rapport '{reportName}' niet vinden!");
+    // Load Layout bytes in repord
+    _ = await api.Read(reportRow);
+    var reportLayout = reportRow.Layout;
+    if (reportLayout == null)
+        throw new Exception($"Kon rapport '{reportName}' layout niet laden!");
+
+    XtraReport report;
+    try
+    {
+        report = ReportUtil.GetXtraReportFromLayout(reportLayout);
+    }
+    catch (Exception)
+    {
+        report = null;
+    }
+    if (report == null)
+        throw new Exception($"Kon rapport '{reportName}' niet laden! (error while loading layout)");
+    return report;
+}