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Asked: 2026-05-10T23:23:17+00:00

I have the following scenario I have a main form as MDI parent and

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I have the following scenario I have a main form as MDI parent and MDI child form, the child form shows a new form (I called it mydialog). I want to access specific function in the MDI child form from mydialog so I tried to set the Owner property in the mydialog object but exception occured (circular reference exception) also the Parent and ParentForm properities of mydialog form are null, I made a quick and dirty soluion using the Tag property of mydialog. I am looking for a better solution and why there is an exception when I set the Owner property of mydialog

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  1. so I tried to set the Owner property in the mydialog object but exception occured (circular reference exception)

    There should be no exception when setting the Owner property. Can you paste the exception ? Also could you paste your code that sets this value ? Have you set other properties like MDIParent / etc ?

    EDIT: Code Update

    Try the following, it should work

    groupsettingsform mydialog= new groupsettingsform(); //create dialog  mydialog.Owner= this; //set owner MDI child form  mydialog.ShowDialog(); // <== DO NOT PASS THE OWNER
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