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Gets or sets whether the style includes the IInterior.Color, IInterior.InvertIfNegative, IInterior.Pattern, IInterior.PatternColor, and IInterior.PatternColorIndex interior properties.
Use this property to control or inspect whether interior pattern settings are included when the style is applied.
bool IncludePatterns { get; set; }
Property IncludePatterns As Boolean
IStyle style = workbook.Styles.Add("patternStyle");
style.Interior.Pattern = Pattern.Gray50;
style.Interior.PatternColor = Color.Blue;
style.IncludePatterns = true;
worksheet.Range["A1"].Style = style;
bool includePatterns = style.IncludePatterns;