PdfGrid row moves to another page
In some scenarios second PdfGrid is moving to a next page leaving lots of empty space on a current page.
In code below I found it happens when number of rows for secondGrid is between 33-37 (inclusive).
First we create a root grid that holds all the complex content with 1 row and 1 column.
Than we create hosting grid where rows are added as needed. In our case we add 2 rows to hold 2 grids one after the other. When second row has to expand to fit second grid that has row count between 33-37, it seems to decide to start from a new page.
Similar issue reported was supposed to be fixed https://www.syncfusion.com/forums/165868/split-row-across-page?
Could you help in forcing both grids to go one after the other?
I think UpdadeRowHeight has no effect on this, but left it to resemble our code base.
Start with SecondGridMovesToSecondPage().
public void SecondGridMovesToSecondPage()
{
using (PdfDocument pdfDocument = new PdfDocument())
{
const float pageMargins = 17;
var section = pdfDocument.Sections.Add();
var pdfPage = section.Pages.Add();
section.PageSettings.SetMargins(pageMargins);
pdfDocument.PageSettings.SetMargins(pageMargins);
// Create root grid
PdfGrid rootGrid = new PdfGrid();
var col = rootGrid.Columns.Add();
col.Width = PdfPageSize.A4.Width - 2 * pageMargins;
var row = rootGrid.Rows.Add();
var cell = row.Cells[0];
cell.Style.Borders.All = PdfPens.Transparent;
// Create grid hosting 2 grids with data
PdfGrid hostGrid = new PdfGrid();
hostGrid.Columns.Add();
cell.Value = hostGrid;
// Create first grid
PdfGrid firstGrid = new PdfGrid();
hostGrid.Rows.Add();
hostGrid.Rows[0].Cells[0].Value = firstGrid;
string text = "";
var colWidth = col.Width / 2;
firstGrid.Columns.Add().Width = colWidth;
firstGrid.Columns.Add().Width = colWidth;
for (int i = 0; i < 5; i++)
{
var r = firstGrid.Rows.Add();
r.Height = 20;
text = $"Field name {i}";
firstGrid.Rows[i].Cells[0].Value = text;
UpdateRowHeight(text, r, colWidth);
text = $"Value with some text {i}";
firstGrid.Rows[i].Cells[1].Value = text;
UpdateRowHeight(text, r, colWidth);
}
// Create second grid
PdfGrid secondGrid = new PdfGrid();
hostGrid.Rows.Add();
hostGrid.Rows[1].Cells[0].Value = secondGrid;
var col1Width = col.Width / 4;
var col2Width = (col.Width - col1Width) / 3;
var col3Width = col2Width;
var col4Width = col2Width;
secondGrid.Columns.Add().Width = col1Width;
secondGrid.Columns.Add().Width = col2Width;
secondGrid.Columns.Add().Width = col3Width;
secondGrid.Columns.Add().Width = col4Width;
// Add header row
var hr = secondGrid.Rows.Add();
var headerFont = new PdfTrueTypeFont(new Font("Arial", 10), FontStyle.Bold, 10, true, true);
text = $"Header field name";
secondGrid.Rows[0].Cells[0].Style.Font = headerFont;
secondGrid.Rows[0].Cells[0].Value = text;
UpdateRowHeight(text, hr, col1Width, headerFont);
text = $"Value with some text";
secondGrid.Rows[0].Cells[1].Style.Font = headerFont;
secondGrid.Rows[0].Cells[1].Value = text;
UpdateRowHeight(text, hr, col2Width, headerFont);
text = $"Value with some text ";
secondGrid.Rows[0].Cells[2].Style.Font = headerFont;
secondGrid.Rows[0].Cells[2].Value = text;
UpdateRowHeight(text, hr, col3Width, headerFont);
text = $"Value with some text longer than the column width";
//text = $"Value with some text ";
secondGrid.Rows[0].Cells[3].Style.Font = headerFont;
secondGrid.Rows[0].Cells[3].Value = text;
UpdateRowHeight(text, hr, col4Width, headerFont);
// NOTE: with number of rows between 33-37 secondGrid starts from a new page. In other cases it sticks to the firstGrid correctly.
for (int i = 1; i < 33; i++)
{
var r = secondGrid.Rows.Add();
r.Height = 20;
text = $"Field name {i}";
secondGrid.Rows[i].Cells[0].Value = text;
UpdateRowHeight(text, r, colWidth);
text = $"Value with some text {i}";
secondGrid.Rows[i].Cells[1].Value = text;
UpdateRowHeight(text, r, colWidth);
text = $"Value with some text {i}";
secondGrid.Rows[i].Cells[2].Value = text;
UpdateRowHeight(text, r, colWidth);
text = $"Value with some text {i}";
secondGrid.Rows[i].Cells[3].Value = text;
UpdateRowHeight(text, r, colWidth);
}
// Paginate and draw
var layoutFormat = new PdfLayoutFormat {Break = PdfLayoutBreakType.FitPage, Layout = PdfLayoutType.Paginate};
DrawPageNumbers(pdfPage, pdfDocument, pageMargins, pageMargins);
rootGrid.Draw(pdfPage, new PointF(0, 0), layoutFormat);
//Save the document
string fileName = $"File{DateTime.Now.Ticks}.pdf";
pdfDocument.Save(fileName);
//Close the document
pdfDocument.Close(true);
System.Diagnostics.Process.Start(fileName);
}
}
private void UpdateRowHeight(string text, PdfGridRow row, float columnWidth, PdfTrueTypeFont font = null)
{
font = font ?? new PdfTrueTypeFont(new Font("Arial", 11));
//measure the string height
SizeF size = font.MeasureString(text);
//divide the text width and column width
float lineCount = size.Width / columnWidth + 1;
float heightNeeded = (size.Height + 1) * lineCount;
if (row.Height < heightNeeded)
{
row.Height = heightNeeded;
}
}
private void DrawPageNumbers(PdfPage page, PdfDocument document, float leftPageMargin, float rightPageMargin)
{
PdfFont font = new PdfTrueTypeFont(new Font("Arial", 10));
PdfBrush brush = PdfBrushes.Black;
float top = 10;
float height = 40;
RectangleF bounds = new RectangleF(0, top, page.GetClientSize().Width - rightPageMargin - leftPageMargin, height);
PdfPageTemplateElement footer = new PdfPageTemplateElement(bounds)
{
Y = bounds.Y // Base ctor of PdfPageTemplateElement doesn't honor Y from bounds. Is this a bug?
};
// Create page number field.
PdfPageNumberField pageNumber = new PdfPageNumberField(font, brush);
// Create page count field.
PdfPageCountField count = new PdfPageCountField(font, brush);
// Add the fields in composite fields.
PdfCompositeField pageNumberField = new PdfCompositeField(font, brush, "{0} of {1}", pageNumber, count)
{
Bounds = footer.Bounds,
StringFormat = new PdfStringFormat(PdfTextAlignment.Right)
};
pageNumberField.Draw(footer.Graphics, new PointF(0, top));
//Add the footer template at the bottom.
document.Template.Bottom = footer;
}
I tried 19.4.0.50 and it doesn't work.
Second grid still starts from the new page.
