ContextMenuStrip 扩展，反射添加、删除dataGridView.DataSource绑定后内容

最近在用dataGridView.DataSource，由于dataGridView.DataSource会绑定不同类型的数据，需要一个通用的删除、添加功能

添加了弹出菜单ContextMenuStrip后需要针对不同的类型数据添加“插入一行”、“删除选中行”等功能。

代码不多，写成了 ContextMenuStrip 的扩展

var obj = dataGridView.DataSource

   /// <summary>/// BindList 公共方法/// get_Count/// get_Item/// set_Item/// Add/// Clear/// CopyTo/// Contains/// GetEnumerator/// IndexOf/// Insert/// Remove/// RemoveAt/// Equals/// GetHashCode/// GetType/// ToString/// </summary>public static class ContextMenuStripExten{public static void AddItem_RemoveSelect(this ContextMenuStrip menu, Control removeCtl, string text = "删除全部选中行"){if (removeCtl is DataGridView || removeCtl is ListBox || removeCtl is CheckedListBox){var item = menu.Items.Add(text);item.Click += (s, e) =>{object obj = null;List<int> removeIndexs = new List<int>();if (removeCtl is DataGridView){var dv = (DataGridView)removeCtl;if (dv.SelectedRows?.Count == 0) return;foreach (DataGridViewRow row in dv.SelectedRows)removeIndexs.Add(row.Index);obj = dv.DataSource;}else if (removeCtl is ListBox){var box = (ListBox)removeCtl;if (box.SelectedIndices?.Count == 0) return;foreach (int index in box.SelectedIndices)removeIndexs.Add(index);obj = box.DataSource;}else if (removeCtl is CheckedListBox){var box = (CheckedListBox)removeCtl;if (box.SelectedIndices?.Count == 0) return;foreach (int index in box.SelectedIndices)removeIndexs.Add(index);obj = box.DataSource;}var type = obj.GetType();var properties = type?.GetProperties();var itemProperties = properties?.FirstOrDefault(p => p.Name == "Item");var d = itemProperties.DeclaringType;var methods = d.GetMethods();foreach (var mth in methods){if (mth.Name == "RemoveAt"){foreach (int index in removeIndexs.OrderByDescending(i => i))mth.Invoke(obj, new object[] { index });}}};}else if (removeCtl is TreeView){var tv = (TreeView)removeCtl;var item = menu.Items.Add(text);item.Click += (s, e) =>{if (tv.SelectedNode == null)return;if (tv.SelectedNode.Level > 0)tv.SelectedNode.Parent.Nodes.Remove(tv.SelectedNode);elsetv.Nodes.Remove(tv.SelectedNode);};}}public static void AddItem_InsertBeforSelect(this ContextMenuStrip menu, Control removeCtl, string text = "插入一行"){if (removeCtl is DataGridView || removeCtl is ListBox || removeCtl is CheckedListBox){var item = menu.Items.Add(text);item.Click += (s, e) =>{object obj = null;int selectedIndexs = 0;if (removeCtl is DataGridView){var dv = (DataGridView)removeCtl;if (dv.SelectedRows?.Count == 0) return;selectedIndexs = dv.SelectedRows[0].Index;obj = dv.DataSource;}else if (removeCtl is ListBox){var box = (ListBox)removeCtl;if (box.SelectedIndices?.Count == 0) return;selectedIndexs = box.SelectedIndex;obj = box.DataSource;}else if (removeCtl is CheckedListBox){var box = (CheckedListBox)removeCtl;if (box.SelectedIndices?.Count == 0) return;selectedIndexs = box.SelectedIndex;obj = box.DataSource;}var type = obj.GetType();var properties = type?.GetProperties();var itemProperties = properties?.FirstOrDefault(p => p.Name == "Item");var d = itemProperties.DeclaringType;var methods = d.GetMethods();foreach (var mth in methods){if (mth.Name == "Insert"){try{Assembly assembly = Assembly.GetExecutingAssembly(); // 获取当前程序集 dynamic instance = assembly.CreateInstance(itemProperties.PropertyType.FullName); // 创建类的实例，返回为 object 类型，需要强制类型转换mth.Invoke(obj, new object[] { selectedIndexs, instance });}catch { }}}};}else if (removeCtl is TreeView){var tv = (TreeView)removeCtl;var item = menu.Items.Add(text);item.Click += (s, e) =>{if (tv.SelectedNode == null)return;if (tv.SelectedNode.Level > 0)tv.SelectedNode.Parent.Nodes.Remove(tv.SelectedNode);elsetv.Nodes.Remove(tv.SelectedNode);};}}public static void AddItem_EditSelect(this ContextMenuStrip menu, Control removeCtl, string text = "批量修改选中格"){if (removeCtl is DataGridView || removeCtl is ListBox || removeCtl is CheckedListBox){var item = menu.Items.Add(text);item.Click += (s, e) =>{if (removeCtl is DataGridView){var dv = (DataGridView)removeCtl;var cells = dv.SelectedCells.Cast<DataGridViewCell>();if (!cells.All(c => c.RowIndex == cells.First().RowIndex)){var msg = string.Join("\r\n", cells.Select(c => $"{c.Value}\t{c.RowIndex}\t{c.ColumnIndex}"));if (MessageBox.Show($"所选格不在同一列，确定修改？\r\n内容\t行号\t列号\r\n{msg}", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;}var newValue = Interaction.InputBox("输入新内容");if (string.IsNullOrEmpty(newValue) && cells.Count() > 0 && MessageBox.Show($"新内容为空，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;foreach (var cell in cells){cell.Value = newValue;}}else if (removeCtl is ListBox){var box = (ListBox)removeCtl;if(box.SelectedIndices?.Count > 1){if (MessageBox.Show($"一共选中 {box.SelectedIndices?.Count } 行，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;}var newValue = Interaction.InputBox("输入新内容");if (string.IsNullOrEmpty(newValue) && box.SelectedIndices?.Count > 0 && MessageBox.Show($"新内容为空，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;foreach (int index in box.SelectedIndices){box.Items[index] = newValue;}}else if (removeCtl is CheckedListBox){var box = (CheckedListBox)removeCtl;if (box.SelectedIndices?.Count > 1){if (MessageBox.Show($"一共选中 {box.SelectedIndices?.Count } 行，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;}var newValue = Interaction.InputBox("输入新内容");if (string.IsNullOrEmpty(newValue) && box.SelectedIndices?.Count > 0 && MessageBox.Show($"新内容为空，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;foreach (int index in box.SelectedIndices){box.Items[index] = newValue;}}};}else if (removeCtl is TreeView){var tv = (TreeView)removeCtl;var item = menu.Items.Add(text);item.Click += (s, e) =>{if (tv.SelectedNode == null)return;var newValue = Interaction.InputBox("TreeNode 修改有三处需要修改：\r\nText\tName\tToolTipText\r\n用逗号隔开","输入新内容","节点文本,节点名,节点提示文本");if (string.IsNullOrEmpty(newValue) && MessageBox.Show($"新内容为空，确认修改？", "确认修改", MessageBoxButtons.YesNo) == DialogResult.No)return;var arr = newValue.Split(new char[] { ',', '，' }, StringSplitOptions.RemoveEmptyEntries);for(var i=0;i<arr.Length;i++){switch (i){case 0:tv.SelectedNode.Text = arr[i];break;case 1:tv.SelectedNode.Name = arr[i];break;case 2:tv.SelectedNode.ToolTipText = arr[i];break;}}};}}}

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