Hello,
We found the weird issue with IsKeptWithNext property. In our document there is a heading and some related text (or table) paragraphs. The requirement is do not split the heading and its first paragraph and keep them on the same page. In other words it should not be a lonely heading at the bottom of the page. To achieve this we tried to set IsKeptWithNext = true to the heading.
Here there are 2 samples:
1) Everything works as expected (the “Heading 3” is rendered on the next page together with the 1st text paragraph):
Pdf document = new Pdf();
Section docPage = document.Sections.Add();
docPage.PageInfo.Margin = new MarginInfo()
{
Bottom = 30,
Left = 0,
Right = 0,
Top = 0
};
Heading h = new Heading(document, docPage, 1);
h.Segments.Add(new Segment(“Heading 2”));
docPage.Paragraphs.Add(h);
for (int i = 0; i < 65; i++)
{
docPage.Paragraphs.Add(new Text(docPage, "test test test " + i.ToString()));
}
// HEADING 3
h = new Heading(document, docPage, 1)
{
IsKeptWithNext = true
};
h.Segments.Add(new Segment(“Heading 3”));
docPage.Paragraphs.Add(h);
for (int i = 0; i < 75; i++)
{
docPage.Paragraphs.Add(new Text(docPage, "test test test " + i.ToString()));
}
document.Save(“output_1.pdf”);
2) Now we add a page before “Heading 2” and set “Heading 2” as the first paragraph of the page. The result is unexpected: “Heading 3” and its 1st text paragraph are split and displayed on different pages. Moreover in both cases the page margin top is 0 so the rendering starts from the beginning of the page. It seems that if there is any page break before “Heading 2”, the property "IsKeptWithNext " for all heading below is ignored (or the start point is not calculated properly). For us it’s the critical bug.
Pdf document = new Pdf();
Section docPage = document.Sections.Add();
docPage.PageInfo.Margin = new MarginInfo()
{
Bottom = 30,
Left = 0,
Right = 0,
Top = 0
};
// HEADING 1
Heading h = new Heading(document, docPage, 1);
h.Segments.Add(new Segment(“Heading 1”));
docPage.Paragraphs.Add(h);
for (int i = 0; i < 10; i++)
{
docPage.Paragraphs.Add(new Text(docPage, "test test test " + i.ToString()));
}
// HEADING 2 (New Page)
docPage.PageInfo.Margin = new MarginInfo()
{
Bottom = 30,
Left = 0,
Right = 0,
Top = 0
};
h = new Heading(document, docPage, 1);
h.IsFirstParagraph = true;
h.Segments.Add(new Segment(“Heading 2”));
docPage.Paragraphs.Add(h);
for (int i = 0; i < 65; i++)
{
docPage.Paragraphs.Add(new Text(docPage, "test test test " + i.ToString()));
}
// HEADING 3
h = new Heading(document, docPage, 1)
{
IsKeptWithNext = true
};
h.Segments.Add(new Segment(“Heading 3”));
docPage.Paragraphs.Add(h);
for (int i = 0; i < 75; i++)
{
docPage.Paragraphs.Add(new Text(docPage, "test test test " + i.ToString()));
}
document.Save(“output_2.pdf”);
In the attachment there are 2 outputs for the scenarios above.
Please advise.
ShmelP: