Inherit from messagebox in c#

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  • Adam
    #1

    Inherit from messagebox in c#

    I am trying to inherit from MessageBox and i get error in
    compilation time.

    The code is:
    public class MyMessageBox : MessageBox
    {
    public static DialogResult Show(int errorCode)
    {
    return DialogResult.OK ;
    }
    }

    The error is:
    System.Windows. Forms.MessageBo x.MessageBox() is
    inaccessible due to its protection level

    I guess it because the constructor of MessageBox is privte.
    My question is, is there anyway to inherit from messagebox?

    Thanks,
    Adam
    Tags: inherit messagebox, inheriting, messagebox
    • Jon Skeet
      #2
      Re: Inherit from messagebox in c#

      Adam <adama@elbit.co .il> wrote:[color=blue]
      > I am trying to inherit from MessageBox and i get error in
      > compilation time.
      >
      > The code is:
      > public class MyMessageBox : MessageBox
      > {
      > public static DialogResult Show(int errorCode)
      > {
      > return DialogResult.OK ;
      > }
      > }
      >
      > The error is:
      > System.Windows. Forms.MessageBo x.MessageBox() is
      > inaccessible due to its protection level
      >
      > I guess it because the constructor of MessageBox is privte.
      > My question is, is there anyway to inherit from messagebox?[/color]

      No. Unless a class has at least one protected or public (or internal if
      you're in the same assembly) constructor, you can't inherit from it (in
      C# at least).

      --
      Jon Skeet - <skeet@pobox.co m>
      Pobox is now part of Fastmail
      http://www.pobox.com/~skeet/
      Pobox has been discontinued as a separate service, and all existing customers moved to the Fastmail platform.

      If replying to the group, please do not mail me too

        Comment

        • Jon Skeet
          #3
          Re: Inherit from messagebox in c#

          Adam <adama@elbit.co .il> wrote:[color=blue]
          > I am trying to inherit from MessageBox and i get error in
          > compilation time.
          >
          > The code is:
          > public class MyMessageBox : MessageBox
          > {
          > public static DialogResult Show(int errorCode)
          > {
          > return DialogResult.OK ;
          > }
          > }
          >
          > The error is:
          > System.Windows. Forms.MessageBo x.MessageBox() is
          > inaccessible due to its protection level
          >
          > I guess it because the constructor of MessageBox is privte.
          > My question is, is there anyway to inherit from messagebox?[/color]

          No. Unless a class has at least one protected or public (or internal if
          you're in the same assembly) constructor, you can't inherit from it (in
          C# at least).

          --
          Jon Skeet - <skeet@pobox.co m>
          Pobox is now part of Fastmail
          http://www.pobox.com/~skeet/
          Pobox has been discontinued as a separate service, and all existing customers moved to the Fastmail platform.

          If replying to the group, please do not mail me too

            Comment

            • Willy Denoyette [MVP]
              #4
              Re: Inherit from messagebox in c#

              Adam wrote:
              || I am trying to inherit from MessageBox and i get error in
              || compilation time.
              ||
              || The code is:
              || public class MyMessageBox : MessageBox
              || {
              || public static DialogResult Show(int errorCode)
              || {
              || return DialogResult.OK ;
              || }
              || }
              ||
              || The error is:
              || System.Windows. Forms.MessageBo x.MessageBox() is
              || inaccessible due to its protection level
              ||
              || I guess it because the constructor of MessageBox is privte.
              || My question is, is there anyway to inherit from messagebox?
              ||
              || Thanks,
              || Adam

              No, the class has only a private constructor, so you can't derive from nor create an instance of the class.

              Willy.


                Comment

                • Willy Denoyette [MVP]
                  #5
                  Re: Inherit from messagebox in c#

                  Adam wrote:
                  || I am trying to inherit from MessageBox and i get error in
                  || compilation time.
                  ||
                  || The code is:
                  || public class MyMessageBox : MessageBox
                  || {
                  || public static DialogResult Show(int errorCode)
                  || {
                  || return DialogResult.OK ;
                  || }
                  || }
                  ||
                  || The error is:
                  || System.Windows. Forms.MessageBo x.MessageBox() is
                  || inaccessible due to its protection level
                  ||
                  || I guess it because the constructor of MessageBox is privte.
                  || My question is, is there anyway to inherit from messagebox?
                  ||
                  || Thanks,
                  || Adam

                  No, the class has only a private constructor, so you can't derive from nor create an instance of the class.

                  Willy.


                    Comment

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