Image Generation is released to CodePlex

send flowers » Image Generation is released to CodePlex

send flowers » Image Generation is released to CodePlex — Fri, 22 Aug 2008 00:41:52 GMT

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re: Image Generation is released to CodePlex

Elijah Manor — Fri, 22 Aug 2008 02:33:22 GMT

I've done my share of GDI+ generation... I think I'd like to do less of it rather than more ;)

We have run into a lot of issues with performance, accessibility, and integration with 3rd party vendors.

http://tinyurl.com/6ym4ab

re: Image Generation is released to CodePlex

Mike — Fri, 22 Aug 2008 11:38:25 GMT

Yes, add it please, no need to consider! One detail I have run into implementing this kind of thing (which I hope you guys will look into): most people do not specify the actual encoding for the image. I don't mean the reponse type, but the actual way GDI will create the image.

I ended up generating PNG's (seems to be the default) without realising it and specifying jpeg as the content type for the response. All browsers displayed the image fine, which is great, but it hides the fact that my implementation was wrong.

Just something to remember. Ideally, when transforming or working with existing images, this handler should take care to use the correct encoding (same as the original) so as not to turn a jpeg into a png.

Thanks!

Online demo

Petr — Fri, 22 Aug 2008 14:54:01 GMT

Will be fine if link to on-line demo is provided:-)

I do something similar some time ago and I have problems with generating transparent gifs in medium trust environment - this helps me:

http://codebetter.com/blogs/brendan.tompkins/archive/2007/06/14/gif-image-color-quantizer-now-with-safe-goodness.aspx

re: Image Generation is released to CodePlex

yousaid — Fri, 22 Aug 2008 16:36:05 GMT

Great tool. Include it in the next release. Writing your own GDI generation is very time consuming and most third party tools have issues working as advertised.

Looks like many useful tools were cut from the Whitbey. Am I missing something, but if I recall correctly, there was an RSS generation control also that was cut? Am I right or wrong?

Cheers,

yousaid

re: Image Generation is released to CodePlex

jstranger — Wed, 17 Sep 2008 10:52:27 GMT

Definitely a lot of demand for something like this. But am having a few problems getting it to do exactly what I want. I need to be able to perform a series of transforms on an image supplied programmatically and maintain state. I have tried putting the image into a session variable and adding Implements IReadOnlySessionState but for some reason when I retrieve it in my image handler all properties are shown as 'parameter is invalid'.

Could do with a few more examples and documentation!

Jon

re: Image Generation is released to CodePlex

Mark Beatty — Sun, 08 Feb 2009 20:42:42 GMT

I've tried out the GenerateImage control and it is certainly something that should be in the next version of .NET. [Actually, I think that it should have been in 2.0] However, I am finding it tricky to set the parameters programatically. For example, this works fine:

<cc1:ImageParameter Name="ID" Value="1" /> </Parameters>

But in the .ashx file this does NOT work:

string qsID = HttpContext.Current.Request.QueryString["id"].ToString();

parameters.Add("ID", qsID);

Thus, I would be grateful for any info on how to set the NameValueCollection parameters.

Thanks,

Mark Beatty

re: Image Generation is released to CodePlex

gkovacs — Thu, 22 Oct 2009 14:31:21 GMT

Try this:

imageObject.Parameters.Add(new Microsoft.Web.ImageParameter { Name = "ID", Value = qsID });