待上传商品筛选配置保存

2026-09-17 18:02:37 +08:00
1 parent ab4f94e320
commit 1b9d2244c8
@@ -0,0 +1,150 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace TemuKJD.Extension;
+
+public class DataContext<TSource> : BindingSource
+{
+	public DataContext() { }
+	public DataContext(TSource dataSource) : base(dataSource, null) { }
+
+	// 强类型的 DataSource,避免调用方还要自己转型
+	public new TSource DataSource
+	{
+		get => (TSource)base.DataSource;
+		set => base.DataSource = value;
+	}
+}
+public static class BindingExtensions
+{
+
+
+	/// <summary>
+	/// TSource 必须显式指定（因为无法从参数推断），TControl 自动从调用方控件推断
+	/// </summary>
+	public static Binding Bind<TSource, TControl>(
+		this TControl ctrl,
+		DataContext<TSource> dataSource,
+		Expression<Func<TControl, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		where TControl : Control
+	=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), dataSource, dataPropertyExpr, mode, format, parseHandler);
+
+	public static Binding Bind<TControl>(
+		this TControl ctrl,
+		BindingSource dataSource,
+		Expression<Func<TControl, object>> controlPropertyExpr,
+		string dataPropertyName,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null) where TControl : Control
+	=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), dataSource, dataPropertyName, mode, format, parseHandler);
+
+	// ---------- 共享的核心实现,不对外暴露 ----------
+	private static Binding BindCore<TSource>(
+		Control ctrl,
+		string controlPropertyName,
+		BindingSource bs,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode,
+		string format,
+		ConvertEventHandler parseHandler) => BindCore(ctrl, controlPropertyName, bs, dataPropertyExpr.GetPropertyName(), mode, format, parseHandler);
+
+	private static Binding BindCore(
+		Control ctrl,
+		string controlPropertyName,
+		BindingSource bs,
+		string dataPropertyName,
+		DataSourceUpdateMode mode,
+		string format,
+		ConvertEventHandler parseHandler)
+	{
+		var binding = new Binding(controlPropertyName, bs, dataPropertyName, true, mode);
+
+		if (!string.IsNullOrEmpty(format))
+			binding.Format += (s, e) => e.Value = string.Format($"{{0:{format}}}", e.Value);
+
+		if (parseHandler != null)
+			binding.Parse += parseHandler;
+
+		ctrl.DataBindings.Add(binding);
+		return binding;
+	}
+	// ---------- TextBox ----------
+	public static Binding Bind<TSource>(
+		this TextBox ctrl,
+		BindingSource bs,
+		Expression<Func<TextBox, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), bs, dataPropertyExpr, mode, format, parseHandler);
+
+	// ---------- CheckBox ----------
+	public static Binding Bind<TSource>(
+		this CheckBox ctrl,
+		BindingSource bs,
+		Expression<Func<CheckBox, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), bs, dataPropertyExpr, mode, format, parseHandler);
+
+	// ---------- DateTimePicker ----------
+	public static Binding Bind<TSource>(
+		this DateTimePicker ctrl,
+		BindingSource bs,
+		Expression<Func<DateTimePicker, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), bs, dataPropertyExpr, mode, format, parseHandler);
+
+	// ---------- ComboBox ----------
+	public static Binding Bind<TSource>(
+		this ComboBox ctrl,
+		BindingSource bs,
+		Expression<Func<ComboBox, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), bs, dataPropertyExpr, mode, format, parseHandler);
+
+	// ---------- NumericUpDown ----------
+	public static Binding Bind<TSource>(
+		this NumericUpDown ctrl,
+		BindingSource bs,
+		Expression<Func<NumericUpDown, object>> controlPropertyExpr,
+		Expression<Func<TSource, object>> dataPropertyExpr,
+		DataSourceUpdateMode mode = DataSourceUpdateMode.OnPropertyChanged,
+		string format = null,
+		ConvertEventHandler parseHandler = null)
+		=> BindCore(ctrl, controlPropertyExpr.GetPropertyName(), bs, dataPropertyExpr, mode, format, parseHandler);
+
+
+	public static string GetPropertyName<TSource, TProperty>(
+		this Expression<Func<TSource, TProperty>> propertyExpr)
+	{
+		if (propertyExpr.Body is MemberExpression member)
+			return member.Member.Name;
+
+		// 处理值类型属性被隐式转换为 object 的情况（如 decimal -> object）
+		if (propertyExpr.Body is UnaryExpression unary &&
+			unary.Operand is MemberExpression unaryMember)
+			return unaryMember.Member.Name;
+
+		throw new ArgumentException("表达式必须是形如 x => x.PropertyName 的属性访问", nameof(propertyExpr));
+	}
+}