VB.NET 2005, RemoveHandler

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  • Sid Price
    #1

    VB.NET 2005, RemoveHandler

    I have a compiler warning I do not understand how to fix. I am trying to
    remove an event handler and get the following message:

    Warning 1 The 'AddressOf' expression has no effect in this context because
    the method argument to 'AddressOf' requires a relaxed conversion to the
    delegate type of the event. Assign the 'AddressOf' expression to a variable,
    and use the variable to add or remove the method as the handler.

    There appears to be no problem with the signature of the method and it was
    added using AddHandler. Any suggestions would be much appreciated,
    Sid.


    Tags: None
    • Armin Zingler
      #2
      Re: VB.NET 2005, RemoveHandler

      "Sid Price" <sid@nowhere.co mschrieb
      I have a compiler warning I do not understand how to fix. I am
      trying to remove an event handler and get the following message:
      >
      Warning 1 The 'AddressOf' expression has no effect in this context
      because the method argument to 'AddressOf' requires a relaxed
      conversion to the delegate type of the event. Assign the 'AddressOf'
      expression to a variable, and use the variable to add or remove the
      method as the handler.
      >
      There appears to be no problem with the signature of the method and
      it was added using AddHandler. Any suggestions would be much
      appreciated,
      Sid.
      Can you show us the line and involved declarations?


      Armin

        Comment

        • Sid Price
          #3
          Re: VB.NET 2005, RemoveHandler

          Although I don't understand why it is necessary I have fixed the issue by
          declaring a variable, assigning the address of my handler to it and using
          the variable as the parameter for RemoveHandle.
          Sid.

          "Armin Zingler" <az.nospam@free net.dewrote in message
          news:uCsMc1nSJH A.6060@TK2MSFTN GP06.phx.gbl...
          "Sid Price" <sid@nowhere.co mschrieb
          >I have a compiler warning I do not understand how to fix. I am
          >trying to remove an event handler and get the following message:
          >>
          >Warning 1 The 'AddressOf' expression has no effect in this context
          >because the method argument to 'AddressOf' requires a relaxed
          >conversion to the delegate type of the event. Assign the 'AddressOf'
          >expression to a variable, and use the variable to add or remove the
          >method as the handler.
          >>
          >There appears to be no problem with the signature of the method and
          >it was added using AddHandler. Any suggestions would be much
          >appreciated,
          >Sid.
          >
          Can you show us the line and involved declarations?
          >
          >
          Armin

            Comment

            • rowe_newsgroups
              #4
              Re: VB.NET 2005, RemoveHandler

              On Nov 19, 3:12 pm, "Sid Price" <s...@nowhere.c omwrote:
              Although I don't understand why it is necessary I have fixed the issue by
              declaring a variable, assigning the address of my handler to it and using
              the variable as the parameter for RemoveHandle.
              Sid.
              >
              "Armin Zingler" <az.nos...@free net.dewrote in message
              >
              news:uCsMc1nSJH A.6060@TK2MSFTN GP06.phx.gbl...
              >
              "Sid Price" <s...@nowhere.c omschrieb
              I have a compiler warning I do not understand how to fix. I am
              trying to remove an event handler and get the following message:
              >
              Warning 1 The 'AddressOf' expression has no effect in this context
              because the method argument to 'AddressOf' requires a relaxed
              conversion to the delegate type of the event. Assign the 'AddressOf'
              expression to a variable, and use the variable to add or remove the
              method as the handler.
              >
              There appears to be no problem with the signature of the method and
              it was added using AddHandler. Any suggestions would be much
              appreciated,
              Sid.
              >
              Can you show us the line and involved declarations?
              >
              Armin
              Hard to say / explain if you don't provide the offending code...

              Thanks,

              Seth Rowe [MVP]
              Microsoft
              http://sethrowe.blogspot.com/

                Comment

                • J.B. Moreno
                  #5
                  Re: VB.NET 2005, RemoveHandler

                  Sid Price <sid@nowhere.co mwrote:
                  Although I don't understand why it is necessary I have fixed the issue by
                  declaring a variable, assigning the address of my handler to it and using
                  the variable as the parameter for RemoveHandle.
                  Well that is what the error message said to do.
                  "Armin Zingler" <az.nospam@free net.dewrote in message
                  news:uCsMc1nSJH A.6060@TK2MSFTN GP06.phx.gbl...
                  "Sid Price" <sid@nowhere.co mschrieb
                  I have a compiler warning I do not understand how to fix. I am
                  trying to remove an event handler and get the following message:
                  >
                  Warning 1 The 'AddressOf' expression has no effect in this context
                  because the method argument to 'AddressOf' requires a relaxed
                  conversion to the delegate type of the event. Assign the 'AddressOf'
                  expression to a variable, and use the variable to add or remove the
                  method as the handler.
                  >
                  There appears to be no problem with the signature of the method and
                  it was added using AddHandler. Any suggestions would be much
                  appreciated,
                  Sid.
                  Can you show us the line and involved declarations?
                  --
                  J.B. Moreno

                    Comment

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