Help required

Hi All,

I am creating a project using VB, and I am new to VB, I am still a beginner, I need help in retrieving email address from database when I enter the username, I have added the code below, please review it and let me know, basically when I enter the username it has pull the email address and display in the label

vb.net Code:

Private cn As Odbc.OdbcConnection  'this is the connection object
    Private rs As ADODB.Recordset   'this is the recordset object 
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 
        Dim con As New OleDb.OleDbConnection
        Dim dbProvider As String
        Dim dbSource As String
        Dim ds As New DataSet
        Dim da As OleDb.OleDbDataAdapter
        Dim sql As String
       
        dbProvider = "PROVIDER=Microsoft.Jet.OLEDB.4.0;"
        dbSource = "Data Source = C:\auto_email\test.mdb"
 
        con.ConnectionString = dbProvider & dbSource
 
        con.Open()
 
        sql = "Select Email_address from test where Uname= & uname"
        da = New OleDb.OleDbDataAdapter(sql, con)
        MsgBox("Database is now open")
 
    End Sub

In the above I am stuck at the sql statement as I have no idea how to refer the text box as the username i.e "& uname" it is the name of the text box, is it the right way, also then as I informed I need to paste the email address in the label and the name is label2, I am trying it as " label2.text=da" but I get a error message, I am using Visual basic professional 2010.

Please help me in this.....:confused::check::confused:
Looking forward for your reply.
Regards,
Srinirao

Welcome to VBForums :wave:

First of all this questio nis better suited in the .Net section of VBForums (I'll report that to the Mods, they can move this one).

If you have a TextBox called "uname", you can access its contents by using uname.text

Thread moved from the 'Office Development' forum to the 'VB.Net' (VB2002 and later) forum.

Thanks opus :thumb:

Hi Opus,
Thanks for your reply, uname.text worked, now I am not able paste it in a label as I have no idea to how to transfer the email to a string as if I transfer it I am getting the query it self, Please find the code after modifications.

Private cn As Odbc.OdbcConnection 'this is the connection object
Private rs As ADODB.Recordset 'this is the recordset object
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
Dim pri As String 'defined to transfer the email address which was retrieved from sql query

dbProvider = "PROVIDER=Microsoft.Jet.OLEDB.4.0;"
dbSource = "Data Source = C:\auto_email\test.mdb"

con.ConnectionString = dbProvider & dbSource

con.Open()

sql = "Select Email_address from test where uname=" &uname.Text
da = New OleDb.OleDbDataAdapter(sql, con)
pri = sql 'assigning the values of sql to pri
Label2.Text = pri 'printing the email address
MsgBox("Database is now open")

End Sub

But I am getting the sql query at the label i.e Select Email_address from test where uname= srinirao

Looking forward for your reply.

Regards,
Srinirao

Try something like

vb.net Code:

Private cn As Odbc.OdbcConnection 'this is the connection object
Private rs As ADODB.Recordset 'this is the recordset object 
 
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
Dim pri As String 'defined to transfer the email address which was retrieved from sql query
 
dbProvider = "PROVIDER=Microsoft.Jet.OLEDB.4.0;"
dbSource = "Data Source = C:\auto_email\test.mdb"
 
con.ConnectionString = dbProvider & dbSource
 
con.Open()
 
sql = "Select Email_address from test where Uname = @UName "
con.Parameters.AddWithValue("@UName", uname.Text)
 
Dim reader As OleDbDataReader = con.ExecuteReader()
If reader.HasRows = True Then 'make sure there is data returned
    Label2.Text = reader.GetString(0)
Else
    MessageBox.Show("No records matched your search criteria.")
End If
End Sub

Hi Hack,

Thanks for your suggestion.

I tried to use the code that u provided but I got error messages for

Code:

---


con.Parameters.AddWithValue("@UName", Badge.Text)
 Dim reader As OleDb.OleDbDataReader = con.ExecuteReader()

---

error message where

Parameters is not a member of system.data.oledb.oledb.connection
ExecuteReader is not a member of system.data.oledb.oledb.connection

Please help :confused:

Regards,
Srinirao

Thats because I free typed all that from memory and I missed a step :o - sorry.

vb.net Code:

'change
sql = "Select Email_address from test where Uname = @UName "
con.Parameters.AddWithValue("@UName", uname.Text)
 
Dim reader As OleDbDataReader = con.ExecuteReader()
 
'to
sql = "Select Email_address from test where Uname = @UName "
Dim command As New OleDbCommand(sql, con)
 
command.Parameters.AddWithValue("@UName", uname.Text)
 
Dim reader As OleDbDataReader = command.ExecuteReader()

Hi,

That was awesome.... That really worked, now I am stuck at another part I need to provide condition to check if the database is being connected or not also I need help in sending out a email to the same email address using yahoo or gmail server properties, please help me in this

Hi,

I have tried the code below, please let me know if it is the right one to send a email because I get a error message which I have taken a screen shot and I have attached in the post. :cry::cry::cry:

Code:

---

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim con As New OleDb.OleDbConnection
        Dim dbProvider As String
        Dim dbSource As String
        Dim ds As New DataSet
        'Dim da As Boolean
        Dim sql As String
        'Dim pri As String 'defined to transfer the email address which was retrieved from sql query
     
        dbProvider = "Provider=Microsoft.Jet.OLEDB.4.0;"
        dbSource = "Data Source=C:\auto_email\Test.mdb"
        con.ConnectionString = dbProvider & dbSource
        con.Open()
        sql = "Select Email_address from Delhi where uname = @uname "
        If uname.Text = "" Then
            Label2.Text = ""
            MsgBox("Please enter a username to continue")
        Else
            Dim command As New OleDbCommand(sql, con)
            command.Parameters.AddWithValue("@uname", uname.Text)
            Dim reader As OleDbDataReader = command.ExecuteReader()
            If reader.Read = True Then 'make sure there is data returned
                Label2.Text = reader.GetString(0)
                Try
                    Dim SmtpServer As New SmtpClient()
                    Dim mail As New MailMessage()
                    SmtpServer.Credentials = New  _
          Net.NetworkCredential("[email protected]", "password")
                    SmtpServer.Port = 587
                    SmtpServer.Host = "smtp.gmail.com"
                    mail = New MailMessage()
                    mail.From = New MailAddress("[email protected]")
                    mail.To.Add("@label2.text")
                    mail.Subject = "Test Mail"
                    mail.Body = "This is for testing SMTP mail from GMAIL"
                    SmtpServer.Send(mail)
                    MsgBox("mail send")
                Catch ex As Exception
                    MsgBox(ex.ToString)
                End Try
            Else
                Label2.Text = ""
                MessageBox.Show("No records matched your search criteria or it is a invalid username please check and insert it once again.")
            End If
        End If
    End Sub

---

Using this line:

Code:

---

mail.To.Add("@label2.text")

---

I think you are setting the to-address to "@label2.text" and not to the string of @label2.text. Try it without the "".

Hi Opus,

I tried it without the codes, I got a different exception error, I have attached the same.

Regards,
Srinirao

Hi,

I did not get any reply, I am trying to sending email thro outlook, so please help me in doing this, also I am using Visual Studio 2010, please find the code below and let me know is any changes are required, or if u have a different solution that would be appreciated...

Code:

---

 
Imports System.Net.Mime.MediaTypeNames
Imports Outlook = Microsoft.Office.Interop.Outlook
Imports System.Net.Mail


Public Class Email

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Namespace OutlookAddIn2
        Class Sample

            Shared Sub SendEmailFromAccount(ByVal application As Outlook.Application, _
                ByVal subject As String, ByVal body As String, ByVal recipients As String, ByVal smtpAddress As String)

                ' Create a new MailItem and set the To, Subject, and Body properties.
                Dim newMail As Outlook.MailItem = DirectCast(application.CreateItem(Outlook.OlItemType.olMailItem), Outlook.MailItem)
                newMail.To = recipients
                newMail.Subject = subject
                newMail.Body = body

                ' Retrieve the account that has the specific SMTP address.
                Dim account As Outlook.Account = GetAccountForEmailAddress(application, smtpAddress)
                ' Use this account to send the e-mail.
                newMail.SendUsingAccount = account
                newMail.Send()
            End Sub

            Shared Function GetAccountForEmailAddress(ByVal application As Outlook.Application, ByVal smtpAddress As String) As Outlook.Account

                ' Loop over the Accounts collection of the current Outlook session.
                Dim accounts As Outlook.Accounts = application.Session.Accounts
                Dim account As Outlook.Account
                For Each account In accounts
                    ' When the e-mail address matches, return the account.
                    If account.SmtpAddress = smtpAddress Then
                        Return account
                    End If
                Next
                Throw New System.Exception(String.Format("No Account with SmtpAddress: {0} exists!", smtpAddress))
            End Function

        End Class
    End Namespace
End Sub
End Class

---

Regards,
srinirao :eek: