Identifying a control by its handler

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  • Magnus.Moraberg@gmail.com
    #1

    Identifying a control by its handler

    Hi,

    I have a number of binding navigator controls on my form. I add "plus"
    buttons (buttons used to add a new row to the relevant datagirdview)
    to them as follows -

    bindingNavigato r.AddNewItem.En abled = false;

    this.bindingNav igator.Items.Ad dRange(new
    System.Windows. Forms.ToolStrip Item[]
    {
    ...
    this.bindingNav igatorAddNewIte m,
    ...
    });

    Each Binding Navigator has a "plus" toolStripButton which I add an
    event to as follows -

    this.bindingNav igatorAddNewIte m.Click += new
    System.EventHan dler(this.AddRo wToDataGridView );

    All the plus buttons have the exact same handler -
    this.AddRowToDa taGridView.

    I was wondering if it would be possible to loop through my
    BindingNavigato rs and identify those toolStripButton s that have
    this.AddRowToDa taGridView as a handler. By doing so, I can identify
    all "plus" buttons and set these buttons as disabled or enabled as I
    so desire.

    Thanks,

    Barry
    Tags: None
    • Magnus.Moraberg@gmail.com
      #2
      Re: Identifying a control by its handler

      On 21 Okt, 11:09, Magnus.Morab... @gmail.com wrote:
      Hi,
      >
      I have a number of binding navigator controls on my form. I add "plus"
      buttons (buttons used to add a new row to the relevant datagirdview)
      to them as follows -
      >
      bindingNavigato r.AddNewItem.En abled = false;
      >
      this.bindingNav igator.Items.Ad dRange(new
      System.Windows. Forms.ToolStrip Item[]
      {
                  ...
                  this.bindingNav igatorAddNewIte m,
                  ...
      >
      });
      >
      Each Binding Navigator has a "plus" toolStripButton which I add an
      event to as follows -
      >
      this.bindingNav igatorAddNewIte m.Click += new
      System.EventHan dler(this.AddRo wToDataGridView );
      >
      All the plus buttons have the exact same handler -
      this.AddRowToDa taGridView.
      >
      I was wondering if it would be possible to loop through my
      BindingNavigato rs and identify those toolStripButton s that have
      this.AddRowToDa taGridView as a handler. By doing so, I can identify
      all "plus" buttons and set these buttons as disabled or enabled as I
      so desire.
      >
      Thanks,
      >
      Barry
      I could derive my own AddRowToDataGri dViewButton class from
      toolStripButton and use GetType() to identify it... What do you think?

        Comment

        • Magnus.Moraberg@gmail.com
          #3
          Re: Identifying a control by its handler

          On 21 Okt, 11:30, Magnus.Morab... @gmail.com wrote:
          On 21 Okt, 11:09, Magnus.Morab... @gmail.com wrote:
          >
          >
          >
          Hi,
          >
          I have a number of binding navigator controls on my form. I add "plus"
          buttons (buttons used to add a new row to the relevant datagirdview)
          to them as follows -
          >
          bindingNavigato r.AddNewItem.En abled = false;
          >
          this.bindingNav igator.Items.Ad dRange(new
          System.Windows. Forms.ToolStrip Item[]
          {
                      ...
                      this.bindingNav igatorAddNewIte m,
                      ...
          >
          });
          >
          Each Binding Navigator has a "plus" toolStripButton which I add an
          event to as follows -
          >
          this.bindingNav igatorAddNewIte m.Click += new
          System.EventHan dler(this.AddRo wToDataGridView );
          >
          All the plus buttons have the exact same handler -
          this.AddRowToDa taGridView.
          >
          I was wondering if it would be possible to loop through my
          BindingNavigato rs and identify those toolStripButton s that have
          this.AddRowToDa taGridView as a handler. By doing so, I can identify
          all "plus" buttons and set these buttons as disabled or enabled as I
          so desire.
          >
          Thanks,
          >
          Barry
          >
          I could derive my own AddRowToDataGri dViewButton class from
          toolStripButton and use GetType() to identify it... What do you think?
          No, I can't do that since I would need to create a user control to
          which I can't add a ToolStipButton. I'm using VC2005 and its form
          designer. Any suggestions?

            Comment

            • Peter Duniho
              #4
              Re: Identifying a control by its handler

              On Tue, 21 Oct 2008 02:09:01 -0700, <Magnus.Moraber g@gmail.comwrot e:
              [...]
              All the plus buttons have the exact same handler -
              this.AddRowToDa taGridView.
              >
              I was wondering if it would be possible to loop through my
              BindingNavigato rs and identify those toolStripButton s that have
              this.AddRowToDa taGridView as a handler. By doing so, I can identify
              all "plus" buttons and set these buttons as disabled or enabled as I
              so desire.
              I don't see why your subclass idea wouldn't work (your third message
              doesn't explain why very well). However, it seems to me that the most
              straight-forward solution is probably the best: just keep a list of all
              the "plus" buttons (in an array, or a List<T>, for example). You can even
              use the same list to manage the event handler subscription if you like.
              Just make a helper method that subscribes your AddRowToDataGri dView method
              to the event and adds the "bindingNavigat ion..." instance to your list as
              it does so.

              Pete

                Comment

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