Http Post Image data in C# .Net

Question

I have implemented a Restful web service in C# .Net and I want to enable users to upload images via this.

What I currently have is a service that only accepts text data. Ideally I need to get an image from the user and store it in my database.

[OperationContract]
[WebInvoke(UriTemplate = "/{key}", Method = "POST")]
ResponseStatus InsertSensor(string key, Image image);

My question what is the most efficient way to do this?

Many Thanks,

SLaks · Accepted Answer · 2013-05-08 12:13:38Z

1

An image is not something you can transmit down a wire.

Instead, you need to encode the image into a stream or byte array (probably using PNG or JPEG).

The client would then send these bytes to the server, and the server would store it in the database.

answered May 8, 2013 at 12:13

SLaks

891k182 gold badges1.9k silver badges2k bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

DafaDil Over a year ago

What are the recommended ways to encode an image can I use XML?

SLaks Over a year ago

@DafaDil: XML is a very inefficient way to encode an image. You are probably familiar with existing standard image encodings, such as PNG, GIF, or JPEG. Note that each one has its strengths and weaknesses.

DafaDil Over a year ago

What do we need to pass when calling the service? is it the image path? Ex: - serviceAPi/10/c:/Images/image1.jpg, and what is the type of the input parameter?

SLaks Over a year ago

@DafaDil: The web service has no access to your client disk. You need to pass the actual bytes as a POST payload.

DafaDil Over a year ago

So it would be something like a byte[] buffer?

|

AContractor · Accepted Answer · 2013-05-08 12:36:38Z

1

Sample project from MSDN: ASP.NET Web API: File Upload and Multipart MIME

Here's another write-up that might be useful: http://blogs.msdn.com/b/henrikn/archive/2012/03/01/file-upload-and-asp-net-web-api.aspx

answered May 8, 2013 at 12:36

AContractor

1761 silver badge7 bronze badges

1 Comment

DafaDil Over a year ago

What do we need to pass when calling the service? is it the image path? Ex: - serviceAPi/10/c:/Images/image1.jpg, and what is the type of the input parameter?

Community · Accepted Answer · 2017-05-23 11:55:58Z

1

You could allow the users to post the image to a http handler as described in this question.

edited May 23, 2017 at 11:55

CommunityBot

11 silver badge

answered May 8, 2013 at 12:37

PHP Rocks

1761 silver badge3 bronze badges

1 Comment

DafaDil Over a year ago

What do we need to pass when calling the service? is it the image path? Ex: - serviceAPi/10/c:/Images/image1.jpg, and what is the type of the input parameter?

Collectives™ on Stack Overflow

Http Post Image data in C# .Net

3 Answers 3

6 Comments

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

6 Comments

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related