Bc30311 visual basic and vb.net value of type cannot be converted to string.

I saw these 2 string examples on this link.

https://www.dotnetperls.com/convert-list-string-vbnet

I doing the first one using String.Join

I created a new page called Default.aspx and put a label called Label1 on the page

Then on this page Default.aspx.vb in the page load event I put this code.
Then when I run the page it works fine and the string is displayed on my label.

Open in new window

I have a .net 3.5 ASP.NET Web Forms application using VB.

In the page load event of my page I put the same code.

But I get this error message:

1. Aug 3rd, 2020, 12:52 PM #1

   

   Thread Starter

   New Member

   

   ---

   Value of type 'String' cannot be converted to 'MailMessage'.

   Hi all

   I can't solve this problem: Value of type 'String' cannot be converted to 'MailMessage'.

   Here is my code:

   Code:

   Sub send_mail() Dim email As New MailMessage() Dim strBody As String = "" Dim emails As String = "" Try Dim SMTP As New SmtpClient("mail.xxx.xo") SMTP.UseDefaultCredentials = True SMTP.Credentials = New System.Net.NetworkCredential("", "xxxxxx") email.From = New MailAddress("") If String.IsNullOrEmpty(emails) Then emails = "" Else emails = TextBox4.Text End If emails = TextBox4.Text email.To.Add(emails) email.Subject = TextBox2.Text strBody = TextBox1.Text & TextBox5.Text & TextBox6.Text & TextBox7.Text & TextBox8.Text strBody = "bla bla bla" & vbCrLf strBody += "bla " strBody += TextBox1.Text & vbCrLf strBody += TextBox2.Text & vbCrLf strBody += TextBox5.Text & vbCrLf strBody += TextBox6.Text & vbCrLf strBody += TextBox7.Text & vbCrLf strBody += TextBox8.Text & vbCrLf email.Body = strBody SMTP.Send(emails) MsgBox("mail send") Catch ex As SmtpException MsgBox(ex.StatusCode & vbCrLf & ex.Message & ex.ToString, vbCritical, "SMTP Error!") End Try End Sub

   When I compile, here is my problem : SMTP.Send(emails)

   Last edited by si_the_geek; Aug 3rd, 2020 at 01:03 PM. Reason: added Code tags

   ---

2. Aug 3rd, 2020, 01:03 PM #2

   Re: Value of type 'String' cannot be converted to 'MailMessage'.

   That is because you have a typo... and the fact you have two variables with similar names means it wasn't obvious.

   These are the relevant variables:

   Code:

   Dim email As New MailMessage() Dim emails As String = ""

   You were accidentally using the wrong one. Instead of this:
   ...it should have been:
   

   ---

3. Aug 3rd, 2020, 01:04 PM #3

   Re: Value of type 'String' cannot be converted to 'MailMessage'.

   This is a perfect example of why you should be using descriptive and easily distinguishable variable names.

   emails is defined as a string variable (one that shouldn't even need to exist based on your code, by the way)

   email is defined as a MailMessage

   ---

4. Aug 3rd, 2020, 08:13 PM #4

   Re: Value of type 'String' cannot be converted to 'MailMessage'.

   

   Originally Posted by OptionBase1

   

   This is a perfect example of why you should be using descriptive and easily distinguishable variable names.

   emails is defined as a string variable (one that shouldn't even need to exist based on your code, by the way)

   email is defined as a MailMessage

   Couldn't agree more. If email refers to a MailMessage object then the only sensible use for emails would be for an array or collection of MailMessage objects. If that emails variable is actually a String containing email addresses then, at the very least, it should be emailAddresses. Other options would be things like recipients.

   ---

5. Aug 4th, 2020, 01:08 AM #5

   

   Thread Starter

   New Member

   

   ---

   Re: Value of type 'String' cannot be converted to 'MailMessage'.

   Stupid mistake
   Thank you for all your help!

   ---