## BuiltInDocumentPropertyCollection.ContentType property

Gets or sets the content type of the document.

```csharp
public string ContentType { get; set; }
```

### Examples

```csharp
using System;
using Aspose.Cells;

namespace AsposeCellsExamples
{
    public class BuiltInDocumentPropertyCollectionPropertyContentTypeDemo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();

            // Set the ContentType property
            workbook.BuiltInDocumentProperties.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

            // Display the ContentType property
            Console.WriteLine("ContentType: " + workbook.BuiltInDocumentProperties.ContentType);

            // Save the workbook
            workbook.Save("output.xlsx", SaveFormat.Xlsx);
        }
    }
}
```

### See Also

* class [BuiltInDocumentPropertyCollection](../)
* namespace [Aspose.Cells.Properties](../../../aspose.cells.properties/)
* assembly [Aspose.Cells](../../../)