mediaservice how do i update an existing file programmatically - Using Umbraco and getting started

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Darren Eccles 59 posts 298 karma points

May 07, 2017 @ 21:54
0

mediaservice - how do I update an existing file programmatically
Hi Guys,

I feel like I've been banging my head against a wall,

I can quite happily create and save the file using the MediaService with the code below:
```
var ms = ApplicationContext.Current.Services.MediaService;
                            IMedia mimage = ms.CreateMedia(model.attachment.FileName, -1, "Image");
                            mimage.SetValue(Constants.Conventions.Media.File, model.attachment);
                            ms.Save(mimage);
```
When I run the code above I will have a file with the following path '/media/1234/image.jpg' for example.

I want to be able to update this keeping the same file directory e.g. '/media/1234/updatedimage.jpg' using the mediaservice, is this possible? or do I need to use System.IO?

Thanks

Darren
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Alex Skrypnyk 6150 posts 24110 karma points MVP 8x admin c-trib

May 07, 2017 @ 22:12

0

Hi Darren

You can do it with .SetValue(string propertyTypeAlias, object value) method. It is possible to pass a HttpPostedFile, HttpPostedFileBase or HttpPostedFileWrapper to the SetValue method, so it can be used for uploads

https://our.umbraco.org/documentation/Reference/Management/Models/Media#setvalue-string-propertytypealias-object-value

Thanks,

Alex

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Darren Eccles 59 posts 298 karma points

May 08, 2017 @ 08:06
0
Hi Alex,

Thanks for your reply.

If I run the same code above for an update, it creates a new folder with the file in, this is because it is using '.CreateMedia()'.

For example:
- Run code first time gives me the following folder structure: '/media/1001/image.jpg'
- Run code second time gives me the following folder structure: '/media/1002/newimage.jpg'
I want to update the file, keeping the original folder '/media/1001/newimage.jpg'

I even tried the following:
```
var ms = ApplicationContext.Current.Services.MediaService;
IMedia mimage = ms.GetMediaByPath(original-image);
mimage.SetValue(Constants.Conventions.Media.File, new-file);
ms.Save(mimage);
```
This doesn't work either, to be honest '.GetMediaByPath' finds the file first time, then returns null afterwards. I think there is a bug with this method.

I'm trying to replicate the file upload function from the back-end on the front-end.

Thanks again,

Darren
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mediaservice - how do I update an existing file programmatically