.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Register
 
Win Surprise Gifts!!!
Congratulations!!!


Post New Web Links

Email Encryption using System.Net.Mail assembly

Posted By:      Posted Date: September 07, 2010    Points: 0   Category :ASP.Net
 
Hi folks, Has anyone used the above assemblies to send emails using public key enryption, specifically PGP? Cheers Mark 


View Complete Post


More Related Resource Links

Email Help (System.Net.Mail)

  

Hi I have a annoying problem. 
I have created a page which takes users details for a quote.

I have then created the form to be emailed to both the user and myself. (Which works fine ATM)

However I would also like to be able to attach a file containing terms and conditions to the email.

I have tried doing this using 

EmailMsg.Attachments.Add(new Attachment("C:\\attachme.txt"));

But everytime that line of code is hit it fails and is caught by my try catch.

Take that line out and the email sends fine, put it in and it breaks the whole page.

Am I missing something really obvious?


Sending email System.net.mail

  

Ok here's my problem. I have a contact page with a txtbox for users name, email and message for users to contact me.  When I send the message it goes through, but the senders email is always my email. Even though i have set it to the txtEmail.Text property. So when I reply, it sends me an email. What am I not seeing that I messed up. Also this is running from VS 2005.

                 protected void btnSubmit_Click1(object sender, ImageClickEventArgs e)
                {

                 const string toAddress = "myemail@gmail.com";
 
                    MailAddress from = new MailAddress(txtEmail.Text, txtName.Text);
			        MailAddress to = new MailAddress(toAddress, "Admin");
			        MailMessage message = new MailMessage(from, to);

			        // set properties
			        message.Subject = txtName.Text + " has sent you an email!";
			        message.Body = txtMessage.Text;
                                message.IsBodyHtml = false;

			        //create smtp object
			        SmtpClient client = new SmtpClient();
                               client.EnableSsl = true;
  
                    try
                    {
                        client.Send(message);
                    }

                    catch(Exception ex)
 

Error while sending email using ASP.NET 2.0 -'System.Net.Mail.SmtpException: Failure sending mail

  

'System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed.   at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)   at System.Net.Mail.SmtpReplyReader.ReadLine()   at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, String& response)   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, String from)   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception)   at System.Net.Mail.SmtpClient.Send(MailMessage message)   --- End of inner exception stack trace ---   at System.Net.Mail.SmtpClient.Send(MailMessage message) 

 i tried many things but still awaiting solution


svk

 

sometimes  i get this error

 'System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: The remote name could not be resolved: 'smtp.mail.y

Embedding hyperlink in email using System.Net.Mail;

  

My goal is to embed a link in the email.

Purpose is that the user needs to click the link in his email to activate the account.

But my emailbody with the link is just shown as plain-Non clickabel text.

the body text looks like:

string mailBody = "please click the following link to activate your account:<br>

string mailBody = "please click the following link to activate your account:<br>" +
                          "http://www.website.com?activate=.....";
                         
I use the follwing code
System.Net.Mail.AlternateView plainView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(System.Text.RegularExpressions.Regex.Replace(BodyText, @"<(.|\n)*?>", string.Empty), null, "text/plain");
System.Net.Mail.AlternateView htmlView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(BodyText.Replace("\n","<BR>"), null  , System.Net.Mime.MediaTypeNames.Text.Html);
mailMsg.AlternateViews.Add(plainView);
mailMsg.AlternateViews.Add(htmlView);

smtp.Send(mailMsg);

How do i embed this link in the receivers ema

The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must

  

Hi,

This is frustrating, and I don't know how to solve it.

I have a strange problem. I am adding a LinqDatasource object, and set the context:

        protected void LinqDataSource_ContextCreating(object sender, LinqDataSourceContextEventArgs e)
        {
            e.ObjectInstance = new KaruselaDataContext(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
        }


Then I get this error:
The type 'System.Data.Linq.DataContext' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

 

On web.config I already have this:
<add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>

NOTE: The datacontext is in a different project (DLL proect) where I added a refernce to System.Data.Linq.

is there another way adding a refernce to a web project? or only though teh web.config?

Thanks.


System.Threading AND email

  

Hi guys,

I really need some help (and also some code example), in how to use System.Threading to send emails.

The issue is:

a) I have a function that sends emails;

b) But I don't want to keep the customers waiting for the email being sent;

c) so, I figure it out that the System.Threading is the best way to do that; But I don't know how exactly I cant use it.

PLEASE, i'm VB - not C# - developer, and I really appreciate help in that language.

I can't use Windows Services or SQL Jobs...

Could you help me on this?

Thanks

Clemilson



system.net.mail cc issue

  

I have an array of addresses.....

	Protected Function GetData() As String()
Dim stringArr(3) As String

stringArr(0) = "youremail1@fakeaddress.com"
stringArr(1) = "youremail2@fakeaddress.com"
stringArr(2) = "youremail3@fakeaddress.com"

Return stringArr

End Function

I am getting an error when i run the code in the CC part....please put this in the right syntax..

MassMail.CC.Add() .......getdata???



System.Net.Mail HTML Template Problem

  

What do I need here ?????? To make this work??


Dim MassMail As New MailMessage()


        Dim Template As ??????????????


        MassMail.To.Add(New MailAddress(TextBox_massemailto.Text))
        MassMail.From = New MailAddress("You@me.com")

        ' MassMail.CC.Add()
        MassMail.Subject = TextBox_massemailsubject.Text
        MassMail.Body = TextBox_massemailBody.Text
        ' MassMail.Body = Template.BodyFileName = "EmailTemplates/BusinessAdBrochure.htm"
        MassMail.Priority = MailPriority.High

        Dim smtpclient As New SmtpClient("relay-hosting.secureserver.net")
        smtpclient.Credentials = New System.Net.NetworkCredential(""You@me.com"", "pasword")
        smtpclient.Port = 25
        smtpclient.EnableSsl = False
        smtpclien

smtp is noe sending email instantly,it makes a Queue in my local system

  
I am using a  smtp to send email from asp.net (C#)code.it sending some email instantly but many of email is making a queue in my Inetpub folder at local system.what could be the issue ? please help me to get rid from it.ThankxArvind

System.Net.Mail.SmtpException: net_io_connectionclosed

  
I'm getting "System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed." but only occasionally.  I'm confused because:1) The SMTP server is the local machine so why would the connection ever fail? and2) The error only happens sometimesThere was a similar question posted here: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=418540&SiteID=1 but it seems they were having problems sending any mail to begin with.Here is the full stack trace:System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed.   at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)   at System.Net.Mail.SmtpReplyReader.ReadLine()   at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, String& response)   at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)   at System.Net.Mail.SmtpConnection.OnClose(Object sender, EventArgs args)   at System.Net.ClosableStream.Close()   at System.Net.Mail.MailWriter.Close()   at System.Net.Mail.SmtpClient.Send(MailMessage message)I'm unable to recreate this error since it onl

HOWTO add a C#.NET library to SQL Server as an assembly that uses such references as system.web.

  
HOWTO add a C#.NET library to SQL Server as an assembly that uses such references as system.web. I have a C# library (dll) I want to add to SQL Server via "CREATE ASSEMBLY", but the DLL uses these references: Microsoft.VisualBasic System System.Core System.Data System.Data.DataSetExtensions System.Drawing System.Management System.Web System.Web.Extensions System.Web.Mobile System.Web.Services System.Xml System.Xml.Linq And just to be clear, the DLL is a .NET 3.5 app, with the SQL Server being SQL Server 2008. Right off the bat, the "CREATE ASSEMBLY" call fails due to System.Web, which strangely, is 2.0.0.0. The CREATE ASSEMBLE says this error: Msg 10301, Level 16, State 1, Line 1 Assembly 'MyLibrary' references assembly 'system.web, version=2.0.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a.', which is not present in the current database. SQL Server attempted to locate and automatically load the referenced assembly from the same location where referring assembly came from, but that operation has failed (reason: 2(The system cannot find the file specified.)). Please load the referenced assembly into the current database and retry your request. I have tried to use VS 2010, to create a SQL Server DB project, and it point blank does not let one add references to things like System.Web. When trying to use "Add Ref", VS 2010 literally lo

Is it possible to Register Assembly System.Runtime.Serialization.dll

  
I am trying to run a Virtual Earth web service call from SQL server, and need to registier the System.Runtime.Serialization.dll assembly in SQL.  Is this possible?ThanksJay

Could not load file or assembly "System.Data.DLL" or one of its dependencies

  
Could not load file or assembly "System.Data.DLL" or one of its dependencies

System.Net.Mail.SmtpException was caught

  
i am trying to implement this in my application to send a mail but i keep getting this error i configured in my web.config<system.net>        <mailSettings>            <smtp from="dep-it@public-health.gov.lb" deliveryMethod="Network">                <network host="mail.ogero.gov.lb" password="" userName="" port="25" defaultCredentials="true"/>            </smtp>        </mailSettings>    </system.net>and this is the code i'm using :Public Function SendMail(ByVal strTo As String, ByVal strSubject As String, ByVal strMsg As String, ByVal path As String) As Boolean        'ByVal strFrom As String,        Try            ' Create the mail message            Dim objMailMsg As MailMessage = New MailMessage("dep-it@publichealth.gov.lb", strTo)            objMailMsg.BodyEncoding = Encoding.UTF8 &nbs

Assembly load error system.runtime.serialization

  
Hello ! I have a web project which i began there is some month, and compile perfectly until now. In fact, i have some compile error;   erreur 1 Could not load file or assembly 'System.Runtime.Serialization, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The module was expected to contain an assembly manifest.   on explorer :   The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018) Description : Une exception non gérée s'est produite au moment de l'exécution de la demande Web actuelle. Contrôlez la trace de la pile pour plus d'informations sur l'erreur et son origine dans le code. Détails de l'exception: System.BadImageFormatException: The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018) Erreur source: Une exception non gérée s'est produite lors de l'exécution de la demande Web actuelle. Les informations relatives à l'origine et l'emplacement de l'exception peuvent être identifiées en utilisant la trace de la pile d'exception ci-dessous. Trace de la pile: [BadImageFormatException: The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018)] System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBa

Encryption (System.Security.Cryptography) .Net 2.0

  
Hi, Query regarding cryptography.  I'm using .net cryptography to encrypt and decrypt files stored on disk on an asp.net website using .Net 2.0 framework.   The code (copied below) works fine to encrypt and decrypt pdf, tif, jpg, etc.  However when it comes to MS Word documents with embedded images and/or tables I get a "Bad data" error when decrypting.   The same document saved to rtf format is encrypted and decrypted without error.  Also simple formatted text documents in Word format (Office 2003) do not throw an error when being decrypted. Would someone care to point out where I'm going wrong? Thanks, code below   _________________________________    Public Sub Encrypt(ByVal Userid As Integer, ByVal FilePath As String)        'Encrypt the file        Try            Dim EncryptedFilePath As String = FilePath & "enc"            Dim clsNetEnCrypt As New NetEncrypt(User)            clsNetEnCrypt.Encrypt(FilePath, EncryptedFilePath)            'Remove the Unencrypted file  

SSIS 2005 - Send Mail Task - signature appended to email is garbled - unicode problem?

  
Hi, I'm pretty new to SSIS so go easy on me. I have a Send Mail Task to notify if a file cannot be imported - the mailbody is created on the previous step by a VB.NET script task to include the name of the file and the path it's been archived to. The problem I'm having is that while the body of the email I've created is displaying fine, our company's Exchange server appends a signature to all emails, and this is coming up as undisplayable characters, presumably due to some kind of unicode encoding problem. I've tried casting the email body in an expression to DT_STR (doesn't work as DT_STR "cannot be converted to a supported type" which seems a bit odd but never mind), DT_WSTR (garbled signature), DT_TEXT/DT_NTEXT (strange error on this one - "Attempted to read or write protected memory") none of those ideas worked, and I'm a bit stumped now. Can anyone help? I'm using SSIS 2005 with SP3
Categories: 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend