winform treeview picturebox
时间: 2024-01-14 14:03:39 浏览: 27
以下是一个示例,演示了如何在WinForm中使用TreeView和PictureBox控件:
```csharp
// 创建一个TreeView控件
TreeView treeView = new TreeView();
treeView.Dock = DockStyle.Left;
// 创建一个PictureBox控件
PictureBox pictureBox = new PictureBox();
pictureBox.Dock = DockStyle.Fill;
// 将TreeView和PictureBox添加到窗体中
this.Controls.Add(treeView);
this.Controls.Add(pictureBox);
// 添加节点到TreeView
TreeNode node1 = new TreeNode("Node 1");
TreeNode node2 = new TreeNode("Node 2");TreeNode node3 = new TreeNode("Node 3");
treeView.Nodes.Add(node1);
treeView.Nodes.Add(node2);
treeView.Nodes.Add(node3);
// 添加图片到PictureBox
Image image = Image.FromFile("path/to/image.jpg");
pictureBox.Image = image;
// 在TreeView的节点上注册拖放事件
treeView.ItemDrag += (sender, e) =>
{
// 开始拖动节点
DoDragDrop(e.Item, DragDropEffects.Move);
};
// 在PictureBox上注册拖放事件
pictureBox.DragEnter += (sender, e) =>
{
// 检查拖放的数据是否是TreeView节点
if (e.Data.GetDataPresent(typeof(TreeNode)))
{
e.Effect = DragDropEffects.Move;
}
};
pictureBox.DragDrop += (sender, e) =>
{
// 获取拖放的节点
TreeNode draggedNode = (TreeNode)e.Data.GetData(typeof(TreeNode));
// 在PictureBox上显示拖放的节点文本
Graphics g = pictureBox.CreateGraphics();
g.DrawString(draggedNode.Text, Font, Brushes.Black, e.X, e.Y);
};
```