Ensure space ​

When rendering multi-page content, you may want to ensure that an element's content uses at least a specified minimum space on each page. This can help prevent fragmentation of content. For example, when rendering a table, it may be desirable to render at least 5 rows before a page break. The EnsureSpace element guarantees that its child is rendered according to the space constraint that you specify.

.EnsureSpace(100)
.Column(column =>
{
    // content
});

.EnsureSpace(100)
.Column(column =>
{
    // content
});

Example:

page.Content().Column(column =>
{
    column
        .Item()
        .ExtendHorizontal()
        .Height(75)
        .Background(Colors.Grey.Lighten2);
    
    column
        .Item()
        .EnsureSpace(100)
        .Text(Placeholders.LoremIpsum());
});

page.Content().Column(column =>
{
    column
        .Item()
        .ExtendHorizontal()
        .Height(75)
        .Background(Colors.Grey.Lighten2);
    
    column
        .Item()
        .EnsureSpace(100)
        .Text(Placeholders.LoremIpsum());
});

In the above example, the grey Background block takes a significant part of the page, leaving little space for the Text element. In fact, the remaining space is less than 100 points, so the EnsureSpace element forces a page break to ensure that its child has sufficient vertical space to render without fragmentation.