# Donut Pie Chart

## Content



The `[InnerRadius](/componentone/api/mvc/online-mvc-core/dotnet-api/C1.AspNetCore.Mvc/C1.Web.Mvc.FlexPieBase-1.InnerRadius.html)` property can be used to leave a blank inner space in the FlexPie, creating a Donut Pie Chart. The blank space can be used to display additional data.

The following image shows a donut FlexPie.

![](https://cdn.mescius.io/document-site-files/images/9b6a6cfe-b8e8-42e9-8a04-da6cb7762977/images/piedonut.png)

The following code example demonstrates how to set this property. This example uses the sample created in the [Quick Start](/componentone/docs/mvc/online-mvc-core/WorkingwithControls/FlexPie/FlexPieQuickStart) section.

```html
<c1-flex-pie binding-name="Country" binding="Sales" inner-radius="0.4f">
</c1-flex-pie>
```