I'm trying to design a mailing system (.NET C#).
Messages are stored in database in two tables:
message(Message_id, Receiver, Sender, Subject, ...) //message's header
message_parts(Message_id, Content_id, Part_type, Content)
So, the content of message is divided into parts (html body, plain text body, sources for html, attachments)
I can't find a way how could i display the message in the WebBrowser control in case when I have html with embedded images. I will have html that references images by content id, i will have images encoded in base64. Now how can I link them and display?
The only ideea that comes to me is building an mht file and open it in the WebBrowser.
But besides that i can't figure out how to do this too, the last thing i want is to create files on the local system.
So, the questions are:
how can I display a message broken into parts as explained above?
how to build an mht file having these parts?
maybe it's not a WebBrowser I should use, but some UI control that does the work for me?
Thank you!
You could create the mht file and set the mimetype to multipart/mime.
Here is a webpage which has some code to create MHT (possibly relying on dlls you need to install separately): http://www.eggheadcafe.com/articles/20040527.asp
Perhaps this might be helpful too: http://msdn.microsoft.com/en-us/library/aa488379(EXCHG.65).aspx
Related
When I use Microsoft Outlook, it allows me to place file attachments in the body of the email rather than just attach them to the message. Is there a way to replicate this behavior using an HTML formatted email in C#? I am sending an automated email out with lots of attachments and it would help keep everything organized for the end user. I found ways to embed an image file into the email but not how to put attachments in. I believe these are called "inline" or "embedded" attachments.
No, HTML will only let you have embedded images.
RTF actually inserts icons inside special placeholders in the RTF body.
The icon position is specified by the Position parameter when calling Attachments.Add.
I have a .NET Server Control app that simply returns some HTML. I also need to embed several picture files into the assembly so that the HTML file can use them as its src= for each of them.
We will simply have a .HTML file that lives in the project as an embedded resource and the server control code will read this html and serve it up. Within THAT html, we will need to have all the picture src links (as well as CSS, js, etc) to point back to embedded resource files.
Does anyone know what code I would put in the HTML file for the pictures to make it point back to the embedded picture file?
I have to do this on a grand scale... hundreds of times. I really would like a programmatic approach to doing this so I can write a wrapper and never have to touch it again when we update the server control with new html, picture files, etc.
One might imagine a way to do this at compile time where I can loop through the embedded files with GetManifestResourceNames and then replace() the src links with the HTTP resource links I suppose?
Thank you for any guidance!
Hm, your question covers quite many aspects. Let me repeat to see if I got it: You have an assembly, with a raw HTML file in it. This file references some items, which are to be found within this same assembly, and you want to have them served to the client upon request as well.
One possible solution might be this.
Instead of a raw HTML file, use a templated one. Then, feed all available resource names as proper URL's into the templating engine, to replace the placeholders.You may want to look at DotLiquid for this.
Create a HTTP handler for each file type you want to serve. Inside the handler, you pull the item from the resources of the dll and serve them.
Alternatively, if those resources are rather small, you want to have a look into the data URI scheme, to save the extra requests and omit the handler. With this you could replace the placeholders with the data URI's directly, and serve a single HTML file with everything in it in the frist place.
Another choice is to have your .NET Server Control app check for optional GET arguments and return the image instead of the HTML.
Your original HTML request might be a simple:
GET netServerApp
Which returns the HTML with normal embedded links.
The HTML image links in the HTML might look like this:
<img src="netServerApp?src=Image1.svg">
or the like. Your server app would then return the appropriate image, instead of the HTML.
It means several round trips to get everything, but that is normal for HTML anyway.
I have a problem. I need a way to import a saved .msg file from Outlook and then display this as html.
Ideally I would have an ASP:FileUpload control that the user would upload the email. Then I would want to parse this as markup so the email can be displayed in the website. I just don't know how to go about pulling this email message in and passing it as a new MailMessage object.
If I could bring the data from the file upload in as a new MailMessage object I would imagine I could read the information from the file and display this.
There has to be a way to display the contents of a .msg with C#. I can't imagine there isn't. I would REALLY like to not use third party plug-ins or .dll files. I have a feeling C# has this functionality somehow built into it. (maybe include one of the references?)
Have you considered using a third-party library to load the MSG file, and then retrieve the content of the message? Aspose.Email can probably do that for you.
How can i send html mail with images in c#? Can i just set direct link to image on my server(something like <img src="http://mysite.ru/img.png" /> ) or i need attache image and then use link to my attached file? Is there any examples or ready to use libraries? What about css files and scripts?
There are multiple methods of coding in-line images. We use VB.NET in house and this site is an excellent reference http://www.systemnetmail.com/default.aspx
If you directly embed the links into the email (pointing to an external server) you'll get blocked by most clients, but the user can turn them on.
They can be embedded in the usual manner of:
<img src="http://go.com/go.gif" />
If you need it to show up by default you'll need to embed the image as an attachment and link to that attachement inline.
See: http://www.systemnetmail.com/faq/2.6.aspx
For CSS it is common to use inline style and no referenced files the images on the other side should be just links and not send with the email. You just need to declare the mail content as html and you are ready to go. JavaScript is also available I use it fir some repositioning.
See http://en.wikipedia.org/wiki/MHTML:
MHTML, short for MIME HTML, is a web
page archive format used to combine
resources that are typically
represented by external links (such as
images, Flash animations, Java
applets, audio files) together with
HTML code into a single file. The
content of an MHTML file is encoded as
if it were an HTML e-mail message,
using the MIME type multipart/related.
The first part of the file is normally
encoded HTML; subsequent parts are
additional resources identified by
their original URLs and encoded in
base64. This format is sometimes
referred to as MHT, after the suffix
.mht given to such files by default
when created by Microsoft Word,
Internet Explorer, or Opera. MHTML is
a proposed standard, circulated in a
revised edition in 1999 as RFC 2557.
Learning more about MHTML may be the key to solving the problem.
probably the best option is to use some package like MvcMailer.
Mvc Mailer display the following characteristics:
MvcMailer sends emails using the MVC views as Email Body with no effort. Here's a quick list of features:
a) Use Razor/WebForms views
b) Use Master pages
c) Write Testable Code
d) Pass values to your view using ViewBag or ViewModel and
e) Generate Absolute URL using Url.Abs method and
f) create multi-part emails by just adding a view file,
g) scaffold your mailers. MvcMailer has a MailerBase class that extends ControllerBase class.
So, Mailers are just like your Controllers. As a result, you can use all the controller goodies without any learning curve, period. The end result is a professional looking HTML email body ready for your to send to your website users.
Visit the Project site for a comprehensive tutorial on MvcMailer. https://github.com/smsohan/MvcMailer/wiki/MvcMailer-Step-by-Step-Guide
On the step guid you will find how you can send emails using images.
brgds.
sebastian.
What I'm trying to do is provide a form where a user can type or cut and past formatted text and be able to send it as an email (similar to outlook). This is required because it's closely resembles the current work flow and these emails aren't being saved anywhere besides people's inboxes. This is obviously a bandage on a bigger problem.
My current attempt has a RichTextBox that can receive RTF that is copy and pasted but when I try to send the email, it seems that the only options are plain text and HTML. After investigating options for an RTF to HTML library, it seems that they all cost at least $300 but after reviewing how difficult it would be to write the library myself, the money and time is better spent getting a third party option. I'm curious if there is a solution to this problem (sending an email with formatted text) without bringing in a third party library.
Most email clients can't display email in RTF, and that's just how it is. You can't change the email clients.
So, you need to send the email in HTML. There's no built-in WinForms control to export formatted text in HTML, unfortunately, so there's no way to accomplish this without third-party code.
You need an RTF to HTML converter. You're right, it may not be worth your time to write one. I did anyway. It wasn't too bad because I had some control over the RTF document creation and could prohibit things that I didn't want to translate to HTML. Converting RTF to HTML is basically just a document parser with the ability to replace RTF command verbs with their HTML equivalents.
I ended up finding a free solution:
http://www.dreamincode.net/forums/showtopic48398.htm
It's not a perfect translation but it's better than any of the pay packages out there.