Avoiding Table Splits Across Pages Using FixedContentEditor in RadPdfProcessing
Environment
| Version | Product | Author |
|---|---|---|
| 2025.1.205 | RadPdfProcessing | Desislava Yordanova |
Description
When adding tables in RadPdfProcessing using the RadFixedDocumentEditor, tables may sometimes split across pages if they cannot fit within the remaining space on the current page. To ensure a table fits entirely on one page and starts on a new page if necessary, you can adopt a strategy to measure the table size and calculate the remaining page height.
This article demonstrates how to prevent tables from splitting across pages and apply page breaks before adding tables using FixedContentEditor.
Solution
Measuring the table and calculating the remaining page height is the suitable approach. For precise positioning, you can use the FixedContentEditor. This editor allows you to measure and draw tables with exact positioning. Below is an example implementation:
static void Main(string[] args)
{
GeneratedTableWithFixedContentEditor();
}
private static void GeneratedTableWithFixedContentEditor()
{
RadFixedDocument document = new RadFixedDocument();
RadFixedPage page = document.Pages.AddPage();
FixedContentEditor editor = new FixedContentEditor(page);
Point currentPosition = new Point(0, 0);
List<Table> tables = new List<Table>();
tables.Add(GenerateTable(50));
tables.Add(GenerateTable(15)); //can fit
//tables.Add(GenerateTable(30)); //can't fit
foreach (Table item in tables)
{
Size size = item.Measure();
if (size.Height < (page.Size.Height - currentPosition.Y))
{
editor.Position.Translate(currentPosition.X, currentPosition.Y);
currentPosition = new Point(0, currentPosition.Y + size.Height + 10);
editor.DrawTable(item);
}
else
{
page = document.Pages.AddPage();
editor = new FixedContentEditor(page);
editor.DrawTable(item);
currentPosition = new Point(0, size.Height + 10);
}
}
PdfFormatProvider provider = new PdfFormatProvider();
string outputFilePath = "exported.pdf";
File.Delete(outputFilePath);
File.WriteAllBytes(outputFilePath, provider.Export(document, TimeSpan.FromSeconds(10)));
Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });
}
private static Telerik.Windows.Documents.Fixed.Model.Editing.Tables.Table GenerateTable(int numberOfRows)
{
Table table = new Table();
table.LayoutType = Telerik.Windows.Documents.Fixed.Model.Editing.Flow.TableLayoutType.FixedWidth;
for (int i = 0; i < numberOfRows; i++)
{
TableRow row = table.Rows.AddTableRow();
TableCell cell = row.Cells.AddTableCell();
cell.Blocks.AddBlock().InsertText("Row: "+i);
}
return table;
}