# ChartFrame.ExportFilterIndex Property

> Gets or sets the format used, if a chart's image is exported. This is the number of the filter in the string returned through the ImageCollection.ExportFilters property, beginning with number one. A value of zero indicates that no export format has currently be specified for the chart. In this case the chart's image is saved in Windows Bitmap format. The technical article Loading and Saving Images lists the currently possible values for this property.

- **Product:** TX Text Control .NET for WPF
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 18.0
- **Namespace:** `TXTextControl.DataVisualization`
- **Package:** `TXTextControl.TextControl.WPF.SDK` (assembly `TXTextControl.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXTextControl.dll` from the setup
- **Path:** TX Text Control .NET for WPF > Reference > TXTextControl.DataVisualization > ChartFrame.ExportFilterIndex Property
- **359 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/chartframe/exportfilterindex-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/chartframe/exportfilterindex-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/chartframe/exportfilterindex-property/llms-full.txt

---

### Description

Gets or sets the format used, if a chart's image is exported. This is the number of the filter in the string returned through the [ImageCollection.ExportFilters](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol/imagecollection/exportfilters-property/llms-full.txt) property, beginning with number one. A value of zero indicates that no export format has currently be specified for the chart. In this case the chart's image is saved in Windows Bitmap format. The technical article Loading and Saving Images lists the currently possible values for this property.

### Syntax

```csharp
public int ExportFilterIndex { get; set; }
```

```vbnet
Public Property ExportFilterIndex As Integer
```

### Examples

The following example uses `ChartFrame.ExportFilterIndex` to configure export filter index as part of the chart frame workflow. The change is then applied to the active document or user interface.

```csharp
chartFrame.ExportFilterIndex = 1;
chartFrame.Refresh();
```

```vbnet
chartFrame.ExportFilterIndex = 1
chartFrame.Refresh()
```

---

## Nearby

- **Previous:** [ChartFrame.ExportFileName Property](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/chartframe/exportfilename-property/llms-full.txt)
- **Next:** [ChartFrame.ExportResolution Property](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/chartframe/exportresolution-property/llms-full.txt)