windowsforms-545-controls-and-libraries-data-grid-visual-elements-grid-view-elements-preview-section.md
Preview sections are non-editable regions in data rows that allow large memo fields to be displayed across all View columns, thus the preview section’s width is equal to the total column width. A preview is not displayed for the new item row and auto filter row.
Note
If the Row Auto-Height or Preview Sections feature is enabled, pixel-based vertical row scrolling is not in effect. See GridOptionsBehavior.AllowPixelScrolling to learn more.
The table below lists the main properties affecting element appearance.
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Appearance
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The GridViewAppearances.Preview property.
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Custom Draw Event
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The GridView.CustomDrawRowPreview event.
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Visibility
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The GridOptionsView.ShowPreview option.
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Height
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The GridOptionsView.AutoCalcPreviewLineCount and GridView.PreviewLineCount properties.
The GridView.MeasurePreviewHeight event.
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Contents
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The GridView.PreviewFieldName property and the GridView.CalcPreviewText event.
The GridView.GetRowPreviewDisplayText method allows preview text to be returned.
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See Also
Appearance and Conditional Formatting