Forms Collection/ Create New Instance

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I have a main form in my project. I have 6 other ones that are not MDI child.

On my form I have 2 listbox A and B. In my listbox A, I would like to list all the forms in my project or application, so that when I click on one of the form name in listbox A, all the controls of this form must appear in the listbox B.

Can somebody help me make this work with C#, please?

Marc

Posted 23-Nov-10 9:17am

marclenoir2005

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3 solutions

Solution 3

for both answer i have an error.

#1 :

foreach (Control c in myFormInstance.Controls)
{ listboxB.Items.Add(c.Name); }

For this answer i have the error :
The name myFormInstance does not exist in the current context.

#2 :

Form newForm = new Form();
Form refNewForm = ref(newForm);

For this second one i have the error :
Invalid expression term ref

What should i do ? I am using Visual Studio 2005.

Posted 24-Nov-10 4:12am

marclenoir2005

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fjdiewornncalwe 24-Nov-10 11:54am

Sorry. There is a bit of a typo in my answer. I don't smoke, but I must have been smoking something really good yesterday to come up with that one. I'll revise the answer and have it up shortly.

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OriginalGriff · Accepted Answer · 2010-11-23T09:26:00

Solution 1

Look at each forms Controls list:

listboxB.Items.Clear();
foreach (Control c in myFormInstance.Controls)
   {
   listboxB.Items.Add(c.Name);
   }

Posted 23-Nov-10 9:26am

OriginalGriff

fjdiewornncalwe · Accepted Answer · 2010-11-23T09:28:00

You'll need to keep references to all the child forms in the main form (when you create them, maybe) and then you will have access to the forms when you want it.

<br />
// Ensure that this newForm has class-wide scope if you want to access it from a different function than where it is created.<br />
Form newForm = new Form();<br />
<br />
... Open the form, etc...<br />
<br />
... Access the newForm control list ...<br />
foreach (Control c in newForm.Controls)<br />
{<br />
    listboxB.Items.Add(c.Name);<br />
}<br />
<br />
<br />
<br />