public static void Run()
{
// ExStart:1
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// Create workbook object
Workbook workbook = new Workbook(FileFormatType.Xlsx);
// Add simple property without any type
workbook.ContentTypeProperties.Add("MK31", "Simple Data");
// Add date time property with type
workbook.ContentTypeProperties.Add("MK32", "04-Mar-2015", "DateTime");
// Save the workbook
workbook.Save(dataDir + "AddingCustomPropertiesVisible_out.xlsx");
// ExEnd:1
}
}