Problem With Mailto Start Process

  • Thread starter Thread starter Wayne Wengert
  • Start date Start date
W

Wayne Wengert

I am using a Sub (see below) to call the default mail application and pass a
list of email addresses and a subject. Most of the time this works perfectly
but occasionally I get an error ("System NullReferenceException: Object
reference not set to an instance of an object"). From what I've been able to
determine, this occurs when there is a username (left of the @) with a
period such as (e-mail address removed)). Has anyone seen this type of problem
and have suggestions on how to resolve it?

================ Code =====================
Public Sub StartDefaultMail( _

ByVal [To] As String, _

Optional ByVal Subject As String = "" _

)

Try

Dim psi As New ProcessStartInfo

psi.UseShellExecute = True

psi.FileName = _

"mailto:" & System.Web.HttpUtility.UrlEncode([To]) & _

"?subject=" & Subject

Process.Start(psi)

Catch ex As Exception

MsgBox("Exception: " & ex.ToString, MsgBoxStyle.Information, "Error")

Throw _

New Exception( _

"Default mail client could not be started.", _

ex _

)

End Try

End Sub
 
* "Wayne Wengert said:
I am using a Sub (see below) to call the default mail application and pass a
list of email addresses and a subject. Most of the time this works perfectly
but occasionally I get an error ("System NullReferenceException: Object
reference not set to an instance of an object"). From what I've been able to
determine, this occurs when there is a username (left of the @) with a
period such as (e-mail address removed)). Has anyone seen this type of problem
and have suggestions on how to resolve it?
Click to expand...

Is it possible to get the callstack for the exception?
 
Herfried;

Is this what you need?

at Microsoft.Win32.NativeMethods.ShellExecuteEx(ShellExeuteInfo info)
at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo
startinfo)
at System.Diagnostic.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at OfficeApp.Module1.StartDefaultNail(String To, String Subject) in c:\2005
myProjects\TestApp2\Module1.vb:line 100

Wayne
 
* "Wayne Wengert said:
Is this what you need?
Click to expand...

Yes, but I still don't have an idea.
at Microsoft.Win32.NativeMethods.ShellExecuteEx(ShellExeuteInfo info)
at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo
startinfo)
at System.Diagnostic.Process.Start()
at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
at OfficeApp.Module1.StartDefaultNail(String To, String Subject) in c:\2005
myProjects\TestApp2\Module1.vb:line 100
Click to expand...

2005 -- are you using VS 2005 (CTP?)?
 
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