Your image -> Properties -> Build Action -> Embedded Resource. It will be compiled with your control or library.
sashaeve
2010-02-15 09:46:52
A:
But how do I reference it in the `Image.ImageUrl` ? It needs to be something that returns a valid image url...
awe
2010-02-15 09:58:28
C# - Reading an Embedded Resource file http://gibbons.co.za/archive/2005/02/02/253.aspx
sashaeve
2010-02-15 10:09:35
+1
A:
Hi, add the two images to a subforlder called images of your treeview control project. Then change their build action in the property grid from content to embeded resource.
In addition to that, you have to register those two images as embeded resources for your assembly in the assemblyinfo.cs file like this:
[assembly: System.Web.UI.WebResource("YourProjectsNameSpace.Images.plus.gif", "img/gif")]
[assembly: System.Web.UI.WebResource("YourProjectsNameSpace.Images.minus.gif", "img/gif")]
As those images will be embeded into your controls assembly now, you can access them using the ClientScriptManager like this:
string plusImageUrl = Page.ClientScript.GetWebResourceUrl(this.GetType(), "YourProjectsNameSpace.Images.plus.gif");
string minusImageUrl = Page.ClientScript.GetWebResourceUrl(this.GetType(), "YourProjectsNameSpace.Images.minus.gif");
Andre Kraemer
2010-02-15 09:54:08
I tried this, but the images does not show in the browser.By the way, I'm using VB, not C#, but I didn't think that would be much different (except syntax).
awe
2010-02-15 14:19:50
Andre Kraemer
2010-02-15 15:14:10
Nothing is shown if I try this url directly in the browser (not even an error).
awe
2010-02-16 05:24:01
That's weired. If you have firefox with firebug installed: could you have a look at the network tab in firebug to see what's going over the wire when requesting the picture url directly in the browser?
Andre Kraemer
2010-02-16 10:54:53
Ok, I found the solution at http://weblogs.asp.net/istofix/archive/2008/10/21/embedded-resources-in-vb-net-and-c-projects.aspx. It seems there are differences between C# and VB after all...
awe
2010-03-11 10:59:46
A:
In my
OK, I found the answer in this article. I give credit to Andre Kraemer as the accepted answer, because he pointed me in the right direction. He could not know that there is a slight difference in the name structure between C# and VB!
Here is the solution that works for VB :
The important difference is that in VB, the file path is not included in the name.
In my example, the root namespace in the project is MyCompany.MyWebControls and the image files is in a subfolder named Resources. In C#, the subfolder is part of the resource name structure, but not in VB.
In C#, this would be:
[assembly: System.Web.UI.WebResource("MyCompany.MyWebControls.Resources.plus.gif", "image/gif")]
In VB, we must ignore the file path in the resource name path:
<Assembly: System.Web.UI.WebResource("MyCompany.MyWebControls.plus.gif", "image/gif")>
So when we know this, my full example will be:
In AssemblyInfo.vb:
<Assembly: System.Web.UI.WebResource("MyCompany.MyWebControls.plus.gif", "image/gif")>
<Assembly: System.Web.UI.WebResource("MyCompany.MyWebControls.minus.gif", "image/gif")>
In my RenderContents override:
Dim lPlusImage As New WebControls.Image()
Dim lMinusImage As New WebControls.Image()
lPlusImage.ImageUrl = Page.ClientScript.GetWebResourceUrl(Me.GetType(), "MyCompany.MyWebControls.plus.gif")
lMinusImage.ImageUrl = Page.ClientScript.GetWebResourceUrl(Me.GetType(), "MyCompany.MyWebControls.minus.gif")
lPlusImage.RenderControl(output)
lMinusImage.RenderControl(output)
And voilá, it works!
awe
2010-03-11 10:56:53