Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.3k views
in Technique[技术] by (71.8m points)

c# - How to call method from all opened forms

I want call a method in the all opened forms

this code call MyUpdateFnc() on the last csutomer Opened Form:

if (Application.OpenForms["frmCustomer"] != null)
{
     (Application.OpenForms["frmCustomer"] as frmCustomer).MyUpdateFnc();
}

Several forms may be open.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You could get all forms of desired type using the Application.OpenForms.OfType<T> method. Next you need to iterate through the forms collection. For instance, using the foreach loop as follows:

foreach (frmCustomer frm in Application.OpenForms.OfType<frmCustomer>())
    frm.MyUpdateFnc();

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...