The Gap element does exactly what its name implies — adds gaps to your content. If you have different layout elements but want them vertically separated on the page by a specific amount of space, the Gap element is what you need to use.
The Gap element exposes only one property, the Height property. Through the Height property, you can set how high the Gap will be either in a fixed amount of points, or in a percentage of available space remaining.
When setting the height of a Gap element to a fixed height, you need to set the Height property to a new instance of the FixedHeight class. Pass the amount of points you wish the gap to span to the constructor of the FixedHeight class.
Using a relative height for the Gap element involves setting the Height property to an instance of the RelativeHeight class; this will allow you to specify the height of the gap in a percentage of available space remaining. Therefore, a Gap element added to the beginning of a page with the same value of a Gap element added towards the end of the page will end up being a much larger gap. The reason for this is that the first Gap element has much more of the page left after it, so the percentage ends up being a larger number. You can see this concept in action through the image to the right. The first Gap element is using 25% of the page at the point where it was added. The second Gap element is using 50% of the page at the point where it was added but is still about the same size as the first Gap element.
Use the code below to add three Text elements divided by two Gap elements similar to the image above. This topic assumes that you already have a Report element defined, as well as at least one ISection element called section1.
In Visual Basic:
Imports Infragistics.Documents.Reports.Report
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Dim gapText As Infragistics.Documents.Reports.Report.Text.IText = section1.AddText()
gapText.Background = New Background(Brushes.LightSteelBlue)
gapText.AddContent("Paragraph one text...")
Dim gap As Infragistics.Documents.Reports.Report.IGap = section1.AddGap()
gap.Height = New RelativeHeight(25)
gapText = section1.AddText()
gapText.Background = New Background(Brushes.LightSteelBlue)
gapText.AddContent("Paragraph two text...")
gap = section1.AddGap()
gap.Height = New RelativeHeight(50)
gapText = section1.AddText()
gapText.Background = New Background(Brushes.LightSteelBlue)
gapText.AddContent("Paragraph three text...")
In C#:
using Infragistics.Documents.Reports.Report;
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Infragistics.Documents.Reports.Report.Text.IText gapText = section1.AddText();
gapText.Background = new Background(Brushes.LightSteelBlue);
gapText.AddContent("Paragraph one text...");
Infragistics.Documents.Reports.Report.IGap gap = section1.AddGap();
gap.Height = new RelativeHeight(25);
gapText = section1.AddText();
gapText.Background = new Background(Brushes.LightSteelBlue);
gapText.AddContent("Paragraph two text...");
gap = section1.AddGap();
gap.Height = new RelativeHeight(50);
gapText = section1.AddText();
gapText.Background = new Background(Brushes.LightSteelBlue);
gapText.AddContent("Paragraph three text...");