System.Windows.Forms namespace

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  • Alex
    #1

    System.Windows.Forms namespace

    Hi,

    I'm completely new to C#, so here is my question:

    Why my C# program (COM dll which I can call from C++ application)
    cannot see namespace

    System.Windows. Forms..

    When I'm typing in "using System..." after the System. the only "W"
    prompt is Web, so I cannot use in my program something like
    MessageBox.Show ( "blah, blah, blah" );

    Thanks,
    Alex

    Tags: None
    • Glenn
      #2
      Re: System.Windows. Forms namespace

      Alex

      Have you referenced System.Windows. Forms dll in VS solution explorer (if
      your using VS of course).

      HTH

      Glenn

      "Alex" <alsim123@hotma il.comwrote in message
      news:1158675184 .714041.158520@ i3g2000cwc.goog legroups.com...
      Hi,
      >
      I'm completely new to C#, so here is my question:
      >
      Why my C# program (COM dll which I can call from C++ application)
      cannot see namespace
      >
      System.Windows. Forms..
      >
      When I'm typing in "using System..." after the System. the only "W"
      prompt is Web, so I cannot use in my program something like
      MessageBox.Show ( "blah, blah, blah" );
      >
      Thanks,
      Alex
      >

        Comment

        • Alex
          #3
          Re: System.Windows. Forms namespace

          Glenn, thanks for the quick answer,

          Yes, I'm writing my project using VS 2005. So currently I have in my
          ..cs file

          using System;
          using System.Runtime. InteropServices ;
          using System.IO;
          using System.Collecti ons.Generic;
          using System.Text;

          with no problem..., but ...System.Windo ws is not available on some
          reason...


          Glenn wrote:
          Alex
          >
          Have you referenced System.Windows. Forms dll in VS solution explorer (if
          your using VS of course).
          >
          HTH
          >
          Glenn
          >
          "Alex" <alsim123@hotma il.comwrote in message
          news:1158675184 .714041.158520@ i3g2000cwc.goog legroups.com...
          Hi,

          I'm completely new to C#, so here is my question:

          Why my C# program (COM dll which I can call from C++ application)
          cannot see namespace

          System.Windows. Forms..

          When I'm typing in "using System..." after the System. the only "W"
          prompt is Web, so I cannot use in my program something like
          MessageBox.Show ( "blah, blah, blah" );

          Thanks,
          Alex

            Comment

            • Alex
              #4
              Re: System.Windows. Forms namespace

              OK, I've figured it myself, I had to go in Project->Add Reference and
              add:
              System.Windows. Forms.... now everything is fine. I just don't
              understand why this namespace was not included in my project
              automatically.. .


              Alex wrote:
              Glenn, thanks for the quick answer,
              >
              Yes, I'm writing my project using VS 2005. So currently I have in my
              .cs file
              >
              using System;
              using System.Runtime. InteropServices ;
              using System.IO;
              using System.Collecti ons.Generic;
              using System.Text;
              >
              with no problem..., but ...System.Windo ws is not available on some
              reason...
              >
              >
              Glenn wrote:
              Alex

              Have you referenced System.Windows. Forms dll in VS solution explorer (if
              your using VS of course).

              HTH

              Glenn

              "Alex" <alsim123@hotma il.comwrote in message
              news:1158675184 .714041.158520@ i3g2000cwc.goog legroups.com...
              Hi,
              >
              I'm completely new to C#, so here is my question:
              >
              Why my C# program (COM dll which I can call from C++ application)
              cannot see namespace
              >
              System.Windows. Forms..
              >
              When I'm typing in "using System..." after the System. the only "W"
              prompt is Web, so I cannot use in my program something like
              MessageBox.Show ( "blah, blah, blah" );
              >
              Thanks,
              Alex
              >

                Comment

                • Lebesgue
                  #5
                  Re: System.Windows. Forms namespace

                  Right click on References in solution explorer and click Add new reference.
                  Then choose System.Windows. Forms.dll from the list and you are done.


                  "Alex" <alsim123@hotma il.comwrote in message
                  news:1158676060 .315016.253140@ m7g2000cwm.goog legroups.com...
                  Glenn, thanks for the quick answer,
                  >
                  Yes, I'm writing my project using VS 2005. So currently I have in my
                  .cs file
                  >
                  using System;
                  using System.Runtime. InteropServices ;
                  using System.IO;
                  using System.Collecti ons.Generic;
                  using System.Text;
                  >
                  with no problem..., but ...System.Windo ws is not available on some
                  reason...
                  >
                  >
                  Glenn wrote:
                  >Alex
                  >>
                  >Have you referenced System.Windows. Forms dll in VS solution explorer (if
                  >your using VS of course).
                  >>
                  >HTH
                  >>
                  >Glenn
                  >>
                  >"Alex" <alsim123@hotma il.comwrote in message
                  >news:115867518 4.714041.158520 @i3g2000cwc.goo glegroups.com.. .
                  Hi,
                  >
                  I'm completely new to C#, so here is my question:
                  >
                  Why my C# program (COM dll which I can call from C++ application)
                  cannot see namespace
                  >
                  System.Windows. Forms..
                  >
                  When I'm typing in "using System..." after the System. the only "W"
                  prompt is Web, so I cannot use in my program something like
                  MessageBox.Show ( "blah, blah, blah" );
                  >
                  Thanks,
                  Alex
                  >
                  >

                    Comment

                    • Lebesgue
                      #6
                      Re: System.Windows. Forms namespace

                      It depends on the project template. System.Windows. Forms.dll is referenced
                      only when you create a Windows Application project

                      "Alex" <alsim123@hotma il.comwrote in message
                      news:1158676754 .140689.313480@ i3g2000cwc.goog legroups.com...
                      OK, I've figured it myself, I had to go in Project->Add Reference and
                      add:
                      System.Windows. Forms.... now everything is fine. I just don't
                      understand why this namespace was not included in my project
                      automatically.. .
                      >
                      >
                      Alex wrote:
                      >Glenn, thanks for the quick answer,
                      >>
                      >Yes, I'm writing my project using VS 2005. So currently I have in my
                      >.cs file
                      >>
                      >using System;
                      >using System.Runtime. InteropServices ;
                      >using System.IO;
                      >using System.Collecti ons.Generic;
                      >using System.Text;
                      >>
                      >with no problem..., but ...System.Windo ws is not available on some
                      >reason...
                      >>
                      >>
                      >Glenn wrote:
                      Alex
                      >
                      Have you referenced System.Windows. Forms dll in VS solution explorer
                      (if
                      your using VS of course).
                      >
                      HTH
                      >
                      Glenn
                      >
                      "Alex" <alsim123@hotma il.comwrote in message
                      news:1158675184 .714041.158520@ i3g2000cwc.goog legroups.com...
                      Hi,
                      >
                      I'm completely new to C#, so here is my question:
                      >
                      Why my C# program (COM dll which I can call from C++ application)
                      cannot see namespace
                      >
                      System.Windows. Forms..
                      >
                      When I'm typing in "using System..." after the System. the only "W"
                      prompt is Web, so I cannot use in my program something like
                      MessageBox.Show ( "blah, blah, blah" );
                      >
                      Thanks,
                      Alex
                      >
                      >

                        Comment

                        • Jianwei Sun
                          #7
                          Re: System.Windows. Forms namespace

                          Because it's not essential for everybody, not many people want it
                          included unless you have an explicit need for that..

                          Alex wrote:
                          OK, I've figured it myself, I had to go in Project->Add Reference and
                          add:
                          System.Windows. Forms.... now everything is fine. I just don't
                          understand why this namespace was not included in my project
                          automatically.. .
                          >
                          >
                          Alex wrote:
                          >Glenn, thanks for the quick answer,
                          >>
                          >Yes, I'm writing my project using VS 2005. So currently I have in my
                          >.cs file
                          >>
                          >using System;
                          >using System.Runtime. InteropServices ;
                          >using System.IO;
                          >using System.Collecti ons.Generic;
                          >using System.Text;
                          >>
                          >with no problem..., but ...System.Windo ws is not available on some
                          >reason...
                          >>
                          >>
                          >Glenn wrote:
                          >>Alex
                          >>>
                          >>Have you referenced System.Windows. Forms dll in VS solution explorer (if
                          >>your using VS of course).
                          >>>
                          >>HTH
                          >>>
                          >>Glenn
                          >>>
                          >>"Alex" <alsim123@hotma il.comwrote in message
                          >>news:11586751 84.714041.15852 0@i3g2000cwc.go oglegroups.com. ..
                          >>>Hi,
                          >>>>
                          >>>I'm completely new to C#, so here is my question:
                          >>>>
                          >>>Why my C# program (COM dll which I can call from C++ application)
                          >>>cannot see namespace
                          >>>>
                          >>>System.Windo ws.Forms..
                          >>>>
                          >>>When I'm typing in "using System..." after the System. the only "W"
                          >>>prompt is Web, so I cannot use in my program something like
                          >>>MessageBox.S how( "blah, blah, blah" );
                          >>>>
                          >>>Thanks,
                          >>>Alex
                          >>>>
                          >

                            Comment

                            • Claes Bergefall
                              #8
                              Re: System.Windows. Forms namespace

                              Maybe the MessageBox was just an example, but just in case that's what you
                              intend to use:
                              Throwing up a MessageBox from inside an inproc COM object will rarely (never
                              IMHO) be a good idea.

                              /claes

                              "Alex" <alsim123@hotma il.comwrote in message
                              news:1158675184 .714041.158520@ i3g2000cwc.goog legroups.com...
                              Hi,
                              >
                              I'm completely new to C#, so here is my question:
                              >
                              Why my C# program (COM dll which I can call from C++ application)
                              cannot see namespace
                              >
                              System.Windows. Forms..
                              >
                              When I'm typing in "using System..." after the System. the only "W"
                              prompt is Web, so I cannot use in my program something like
                              MessageBox.Show ( "blah, blah, blah" );
                              >
                              Thanks,
                              Alex
                              >

                                Comment

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