---
title: "LosslessJpegTransform..::.Open Method (String)"
canonical: https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform_Open_1_bb3a7a4f.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# LosslessJpegTransform.Open Method (String)
 
Opens the JPEG transform object on the specified file.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Sub Open ( _fileName As String _
)
```
 
```csharp
public void Open(string fileName
)
```
 
### Parameters
 
 - fileName
     - Type: [System.String](http://msdn2.microsoft.com/en-us/s1wwdcbf)
The name of the JPEG file to open transform on.
 
## Remarks
 When you finished working with this file, you should call [Close()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform_Close.htm.md) method to release this file. The file will be locked by your application until you close the JPEG transform.
   
## See Also

### Reference

- [LosslessJpegTransform Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform.htm.md)
- [Open Overload](https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform_Open.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Codecs.htm.md)
- [LosslessJpegTransform.Close()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform_Close.htm.md)
- [LosslessJpegTransform.Opened](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Codecs_LosslessJpegTransform_Opened.htm.md)