WPF Grid边框
WPF Grid布局自带的属性没有边框
1、头部引入
xmlns:ext="clr-namespace:TS.HY.Manage"
2、Grid设置属性
ext:GridHelper.ShowBorder="True"
ext:GridHelper.GridLineThickness="1"
ext:GridHelper.GridLineBrush="black">
3、GridHelper源码
public class GridHelper
{
public static readonly DependencyProperty ShowBorderProperty =
DependencyProperty.RegisterAttached("ShowBorder", typeof(bool), typeof(GridHelper),
new PropertyMetadata(OnShowBorderChanged));
public static readonly DependencyProperty GridLineThicknessProperty =
DependencyProperty.RegisterAttached("GridLineThickness", typeof(double), typeof(GridHelper),
new PropertyMetadata(OnGridLineThicknessChanged));
public static readonly DependencyProperty GridLineBrushProperty =
DependencyProperty.RegisterAttached("GridLineBrush", typeof(Brush), typeof(GridHelper),
new PropertyMetadata(OnGridLineBrushChanged));
#region ShowBorder
public static bool GetShowBorder(DependencyObject obj)
{
return (bool)obj.GetValue(ShowBorderProperty);
}
public static void SetShowBorder(DependencyObject obj, bool value)
{
obj.SetValue(ShowBorderProperty, value);
}
private static void OnShowBorderChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var grid = d as Grid;
if ((bool)e.OldValue)
{
grid.Loaded -= (s, arg) => { };
}
if ((bool)e.NewValue)
{
grid.Loaded += new RoutedEventHandler(GridLoaded);
}
}
#endregion
#region GridLineThickness
public static double GetGridLineThickness(DependencyObject obj)
{
return (double)obj.GetValue(GridLineThicknessProperty);
}
public static void SetGridLineThickness(DependencyObject obj, double value)
{
obj.SetValue(GridLineThicknessProperty, value);
}
private static void OnGridLineThicknessChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
#endregion
#region GridLineBrush
public static Brush GetGridLineBrush(DependencyObject obj)
{
Brush brush = (Brush)obj.GetValue(GridLineBrushProperty);
return brush == null ? Brushes.LightGray : brush;
}
public static void SetGridLineBrush(DependencyObject obj, Brush value)
{
obj.SetValue(GridLineBrushProperty, value);
}
private static void OnGridLineBrushChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
#endregion
private static void GridLoaded(object sender, RoutedEventArgs e)
{
Grid grid = sender as Grid;
var row_count = grid.RowDefinitions.Count;
var column_count = grid.ColumnDefinitions.Count;
#region 支持grid cell元素与边框距离设置，但是方法是将cell内元素放到border中，先删除，再添加！
var controls = grid.Children;
var count = controls.Count;
for (int i = 0; i < count; i++)
{
var item = controls[i] as FrameworkElement;
var row = Grid.GetRow(item);
var column = Grid.GetColumn(item);
var rowspan = Grid.GetRowSpan(item);
var columnspan = Grid.GetColumnSpan(item);
var settingThickness = GetGridLineThickness(grid);
Thickness thickness = new Thickness(settingThickness / 2);
if (row == 0)
thickness.Top = settingThickness;
if (row + rowspan == row_count)
thickness.Bottom = settingThickness;
if (column == 0)
thickness.Left = settingThickness;
if (column + columnspan == column_count)
thickness.Right = settingThickness;
var border = new Border()
{
BorderBrush = GetGridLineBrush(grid),
BorderThickness = thickness,
Padding = new Thickness(20)
};
Grid.SetRow(border, row);
Grid.SetColumn(border, column);
Grid.SetRowSpan(border, rowspan);
Grid.SetColumnSpan(border, columnspan);
grid.Children.RemoveAt(i);
border.Child = item;
grid.Children.Insert(i, border);
}
#endregion
}
}
转自：http://www.cnblogs.com/baijiakai/archive/2012/08/23/2652158.html