如何以编程方式滚动TreeView控件？

// 获取TreeView控件的句柄
IntPtr treeViewHandle = treeView.Handle;

// 获取TreeView控件的设备上下文
IntPtr deviceContext = GetDC(treeViewHandle);

// 创建一个兼容的设备上下文
IntPtr compatibleDeviceContext = CreateCompatibleDC(deviceContext);

// 获取TreeView控件的高度和宽度
int height = treeView.Height;
int width = treeView.Width;

// 创建一个与TreeView控件大小相同的位图
IntPtr bitmap = CreateCompatibleBitmap(deviceContext, width, height);

// 选择位图到兼容的设备上下文中
IntPtr oldBitmap = SelectObject(compatibleDeviceContext, bitmap);

// 将TreeView控件的内容绘制到兼容的设备上下文中
SendMessage(treeViewHandle, WM_PRINT, compatibleDeviceContext, PRF_CLIENT | PRF_CHILDREN | PRF_ERASEBKGND | PRF_NONCLIENT);

// 将滚动条位置设置为指定值
treeView.ScrollBars = ScrollBars.None;
treeView.TopNode.EnsureVisible();
treeView.ScrollBars = ScrollBars.Both;

// 释放设备上下文和位图资源
ReleaseDC(treeViewHandle, deviceContext);
SelectObject(compatibleDeviceContext, oldBitmap);
DeleteObject(bitmap);
DeleteDC(compatibleDeviceContext);

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

const int WM_PRINT = 0x317;
const int PRF_CLIENT = 0x4;
const int PRF_CHILDREN = 0x10;
const int PRF_ERASEBKGND = 0x8;
const int PRF_NONCLIENT = 0x2;

[DllImport("user32.dll")]
static extern IntPtr GetDC(IntPtr hWnd);

[DllImport("user32.dll")]
static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

[DllImport("gdi32.dll")]
static extern IntPtr CreateCompatibleDC(IntPtr hDC);

[DllImport("gdi32.dll")]
static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);

[DllImport("gdi32.dll")]
static extern bool DeleteDC(IntPtr hDC);

[DllImport("gdi32.dll")]
static extern bool DeleteObject(IntPtr hObject);

[DllImport("gdi32.dll")]
static extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int nWidth, int nHeight);

[DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);