I have 3 forms. Form 1 has information inserted into Form 2. After clicking a button on Form 2 to get to Form 3; on Form 3 I pull data and put it on Form 2. The problem with this is that I don't know how to get a single instance of Form 2 so that I can keep the data from Form 1 after pulling data from Form 3. This is a WinForms application. Any help would be much appreciated. I have looked into the Singleton way of doing it but everything I research seems too confusing to follow. Thanks!
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2You don't need a Singleton. Maintain a reference member to the form from which you want to pull data. Form instances work just like any other object does.– Robert HarveyJul 22, 2014 at 18:09
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1Pretty funny that the question was "closed as unclear what you're asking" after an answer was given which was later accepted with a "thank you!" from the OP.– GHPSep 4, 2014 at 18:37
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@Graham see Can a question with an accepted answer be closed as unanswerable– gnatSep 4, 2014 at 19:01
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1 Answer
Forms are objects, so you can pass them into the constructor of each other form:
Class Form2{
Form form1;
Form Form2(Form form1){ // Constructor
this.form1 = form1;
} }
Now, you have a reference to the Form1 object in a field of Form2. If you need information, you use Form1.information
