Application.OpenForms封装

Question

有什么办法可以将这个函数封装在静态类中吗？

private void btnAddWorker_ItemClick(object sender, ItemClickEventArgs e) 
{ 
    bool isOpen = false; 

    foreach (Form _f in Application.OpenForms) 
    { 
     if (_f is frmAddWorker) 
     { 
      isOpen = true; 
      _f.Focus(); 
      break; 
     } 
    } 

    if (isOpen == false) 
    { 
     frmAddWorker AddWorker = new frmAddWorker() { MdiParent = this }; 
     AddWorker.Show(); 
    } 
} 

类似的东西：

public class Forms(){public void openForm(form _f){...}} 

我想，以防止打开所有形式的按钮写的原代码。

Answer 1

public static void Focus<T>(Form parent) where T : System.Windows.Forms.Form 
{ 
    bool isOpen = false; 
    foreach (var f in Application.OpenForms) 
    { 
     if (f is T) 
     { 
      isOpen = true; 
      (f as Form).Focus(); 
      break;  
     } 
    } 

    if (!isOpen) 
    { 
     T newForm = Activator.CreateInstance<T>(); 
     newForm.MdiParent = parent; 
     newForm.Show(); 
    } 
} 

这样称呼它：

StaticClass.Focus<frmAddWorker>(this);