83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
using Avalonia;
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using Avalonia.Controls;
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using System.Collections.ObjectModel;
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namespace Cowain.Base.Helpers;
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public class GridHelper
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{
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// 定义RowDefinitions附加属性
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public static readonly AttachedProperty<ObservableCollection<RowDefinition>> RowDefinitionsProperty =
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AvaloniaProperty.RegisterAttached<Grid, ObservableCollection<RowDefinition>>(
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"RowDefinitions", typeof(GridHelper));
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// 定义ColumnDefinitions附加属性
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public static readonly AttachedProperty<ObservableCollection<ColumnDefinition>> ColumnDefinitionsProperty =
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AvaloniaProperty.RegisterAttached<Grid, ObservableCollection<ColumnDefinition>>(
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"ColumnDefinitions", typeof(GridHelper));
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// RowDefinitions属性的Get方法
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public static ObservableCollection<RowDefinition> GetRowDefinitions(AvaloniaObject element)
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{
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return element.GetValue(RowDefinitionsProperty);
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}
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// RowDefinitions属性的Set方法
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public static void SetRowDefinitions(AvaloniaObject element, ObservableCollection<RowDefinition> value)
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{
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element.SetValue(RowDefinitionsProperty, value);
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// 当属性值变化时，更新Grid的RowDefinitions
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if (element is Grid grid && value != null)
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{
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grid.RowDefinitions.Clear();
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foreach (var definition in value)
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{
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grid.RowDefinitions.Add(definition);
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}
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// 监听集合变化，动态更新Grid
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value.CollectionChanged += (sender, e) =>
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{
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grid.RowDefinitions.Clear();
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foreach (var definition in value)
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{
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grid.RowDefinitions.Add(definition);
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}
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};
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}
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}
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// ColumnDefinitions属性的Get方法
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public static ObservableCollection<ColumnDefinition> GetColumnDefinitions(AvaloniaObject element)
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{
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return element.GetValue(ColumnDefinitionsProperty);
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}
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// ColumnDefinitions属性的Set方法
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public static void SetColumnDefinitions(AvaloniaObject element, ObservableCollection<ColumnDefinition> value)
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{
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element.SetValue(ColumnDefinitionsProperty, value);
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// 当属性值变化时，更新Grid的ColumnDefinitions
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if (element is Grid grid && value != null)
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{
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grid.ColumnDefinitions.Clear();
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foreach (var definition in value)
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{
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grid.ColumnDefinitions.Add(definition);
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}
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// 监听集合变化，动态更新Grid
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value.CollectionChanged += (sender, e) =>
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{
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grid.ColumnDefinitions.Clear();
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foreach (var definition in value)
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{
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grid.ColumnDefinitions.Add(definition);
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}
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};
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}
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}
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}
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