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<H1>[Gtk-sharp-list] How to reference an object, given it's name?
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<B>Jonathan Pryor
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<A HREF="mailto:jonpryor%40vt.edu"
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TITLE="[Gtk-sharp-list] How to reference an object, given it's name?">jonpryor@vt.edu
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<I>Thu, 28 Oct 2004 06:28:12 -0400</I>
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<PRE>On Thu, 2004-10-28 at 00:10, Peter K. Gale wrote:
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><i> Say you have an array of button objects named buttonA, buttonB, etc, and a
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</I>><i> corresponding array of event objects named eventA, eventB, etc. I am
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</I>><i> trying to find a clean way to link buttonX.Clicked with an action on
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</I>><i> eventX.
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</I>><i>
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</I>><i> When a button is clicked, the handler will be passed a reference to that
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</I>><i> button object. Extracting the name of the button and changing the string
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</I>><i> from "buttonX" to "eventX" is easy. I am having problems trying to use the
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</I>><i> string "eventX" to reference the event object of the same name. Any ideas?
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</I>><i> If the process is as clean as I hope it is, it's probably one line of code.
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</I>
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I assume that the number of buttons and events is the same. If this is
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the case, you need do only two things: (1) ensure that the order of
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buttons matches the order of events, e.g.
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Button[] buttons = {buttonA, buttonB, buttonC};
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Event[] events = {eventA, eventB, eventC};
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(2) Use IList.IndexOf to find the index of the button, then index the
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event array with the same index:
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IList b = buttons;
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int index = b.IndexOf (myButton);
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Event e = events[index];
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If the number of buttons and events is *not* equal, then you'll have to
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develop some mapping mechanism between buttons and events, possibly via
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a Hashtable.
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- Jon
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