sql server - How to get rid of this error: An OLE DB Provider was not specified in the ConnectionString. An example would be, 'Provider=SQLOLEDB;' -

the purpose of application when user types in customer, username , message respective textboxes, it's supposed recorded table on sql server after user presses send button.

here's code:

public class form1  dim con oledbconnection dim cmd new oledbcommand  dim constring string = "data source=176.111.555.24;initial catalog=mydatabase;user id=username;password=password"  public sub messagesent()      try          dim con new oledbconnection         con.connectionstring = constring         con.open()          cmd.connection = con          cmd.commandtext = "insert tblmessage(customer, username, message) values('" & txtcustomer.text & "', '" & txtusername.text & "', '" & rtfmessage.text & "')"           cmd.executenonquery()          con.close()         msgbox("message sent")          con.close()         con.dispose()      catch ex exception         msgbox(ex.message)      end try  end sub     private sub btnsend_click(sender object, e eventargs) handles btnsend.click         messagesent()     end sub 

i'm getting following error:

an ole db provider not specified in connectionstring. example be, 'provider=sqloledb;'.

what i'm doing wrong , how can resolved.

it looks trying give sql server connection string oledbconnection. need either use sqlconnection open connection string or else need create valid oledb connection string point database. reference, see this site.