WPF常用方法,事件驱动和控件遍历

时间:2024-08-30 10:37:38

//初始化数据,默认选中第一项,事件驱动

RadioButton btn = FuncClass.GetChildObject<RadioButton>(this.stackPanel1, "btnname");
if (btn != null)
{
btn.IsChecked = true;
btn.RaiseEvent(new RoutedEventArgs(System.Windows.Controls.Primitives.ButtonBase.ClickEvent, btn));
}

遍历一类控件或一个控件:

        /// <summary>
/// 根据控件名找子控件
/// <para>调用方法:</para>
/// <para>Button btnMax = FuncClass.GetChildObject(Button)(this, "btnMax");</para>
/// </summary>
/// <typeparam name="T">控件类型</typeparam>
/// <param name="obj">父控件</param>
/// <param name="name">要找的子控件名称</param>
/// <returns>返回子控件,若没找到返回 null</returns>
public static T GetChildObject<T>(System.Windows.DependencyObject obj, string name) where T : System.Windows.FrameworkElement
{
System.Windows.DependencyObject child = null;
T grandChild = null; for (int i = ; i <= VisualTreeHelper.GetChildrenCount(obj) - ; i++)
{
child = VisualTreeHelper.GetChild(obj, i); if (child is T && (((T)child).Name == name | string.IsNullOrEmpty(name)))
{
return (T)child;
}
else
{
grandChild = GetChildObject<T>(child, name);
if (grandChild != null)
return grandChild;
}
}
return null;
} /// <summary>
/// 遍历一类控件
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj"></param>
/// <returns></returns>
public static List<T> GetChildObjects<T>(DependencyObject obj) where T : FrameworkElement
{
DependencyObject child = null;
List<T> childList = new List<T>();
for (int i = ; i <= VisualTreeHelper.GetChildrenCount(obj) - ; i++)
{
child = VisualTreeHelper.GetChild(obj, i);
if (child is T && !string.IsNullOrEmpty(((T)child).Name))
{
childList.Add((T)child);
}
childList.AddRange(GetChildObjects<T>(child));
}
return childList;
}

WPF 窗体居中:
this.WindowStartupLocation = WindowStartupLocation.CenterScreen;