public T GetViewControl <T>(string vcKey = "") where T : UserControl, new()
{
T rst = null;
if (ViewControls != null)
{
string typekey = GetViewControlKey(typeof(T), vcKey);
if (ViewControls.ContainsKey(typekey) && ViewControls[typekey] != null)
{
rst = ViewControls[typekey] as T;
}
}
return(rst);
}
private void UnRegisterRelationUserControl(ref UserControl uc, string vcKey, bool isUnRegisterVM)
{
if (uc == null)
{
return;
}
string uctypekey = GetViewControlKey(uc.GetType(), vcKey);
var ucchilds = uc.Descendents();
foreach (UserControl t in ucchilds.OfType <UserControl>())
{
UserControl t2 = t;
string t2key = GetViewControlKey(t2.GetType(), vcKey);
UnRegisterRelationUserControl(ref t2, vcKey, isUnRegisterVM);
if (t2 != null)
{
if (t2.DataContext != null)
{
if (isUnRegisterVM)
{
if (t2.DataContext is ViewModelBase)
{
ViewModelLocator.Instance.UnRegisterViewModel(t2.DataContext.GetType(), vcKey);
}
}
t2.DataContext = null;
}
if (t2.Content != null)
{
GC.SuppressFinalize(t2.Content);
t2.Content = null;
}
}
if (ViewControls.ContainsKey(t2key))
{
ViewControls.Remove(t2key);
}
if (t2 != null)
{
GC.SuppressFinalize(t2);
}
}
}
private void InnerUnRegisterUI(Type type, string vcKey, bool isUnRegisterVM)
{
string vcTypeKey = GetViewControlKey(type, vcKey);
if (ViewControls.ContainsKey(vcTypeKey))
{
object t = ViewControls[vcTypeKey];
if (t != null)
{
if (t is UserControl)
{
#region usercontrol
UserControl uc = t as UserControl;
UnRegisterRelationUserControl(ref uc, vcKey, isUnRegisterVM);
if (uc.Content != null)
{
GC.SuppressFinalize(uc.Content);
uc.Content = null;
}
if (uc.DataContext != null)
{
if (isUnRegisterVM)
{
if (uc.DataContext is ViewModelBase)
{
ViewModelLocator.Instance.UnRegisterViewModel(uc.DataContext.GetType(), vcKey);
}
}
uc.DataContext = null;
}
#endregion
}
}
ViewControls.Remove(vcTypeKey);
if (t != null)
{
GC.SuppressFinalize(t);
}
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
private T innerRegisterUI <T>(string vcKey) where T : new()
{
T rst;
string typekey = GetViewControlKey(typeof(T), vcKey);
if (ViewControls.ContainsKey(typekey))
{
if (ViewControls[typekey] != null)
{
rst = (T)ViewControls[typekey];
}
else
{
rst = CreateUserControl <T>();
ViewControls[typekey] = rst;
}
}
else
{
rst = CreateUserControl <T>();
ViewControls.Add(typekey, rst);
}
return(rst);
}