C# 跨越ListView的滚动条截图

 1     // <summary>  
 2     /// ListView跨越滚动截图  
 3     /// </summary>  
 4     /// <param name="listView">ListView</param>  
 5     /// <returns>图形</returns>  
 6     public static Image GetListViewImage(ListView listView)  
 7     {  
 8         PictureBox pic = new PictureBox();  
 9         pic.Size = listView.Size;  
10         pic.Location = listView.Location;  
11         Bitmap bmpPre = new Bitmap(pic.Width, pic.Height);  
12         listView.DrawToBitmap(bmpPre, new Rectangle(0, 0, pic.Width, pic.Height));  
13         pic.Image = bmpPre;  
14         listView.Parent.Controls.Add(pic);  
15 
16         listView.Visible = false;  
17         Size sizePre = listView.Size;  
18 
19         // 获取扩展后 * 无滚动条 * 情况下最后一条ListViewItem的边框信息
20         // (相对于ListView的左边距、上边距、完全显示的宽度、ListViewItem的高度，不包括滚动条信息)
21         Rectangle rect = listView.GetItemRect(listView.Items.Count - 1, ItemBoundsPortion.Entire);  
22         
23         // 每条ListViewItem的宽度加 4 (留出右侧灰色滚动条的位置，绘制到位图时会出现灰色滚动条)
24         int width = rect.Width + rect.X + (listView.Columns.Count * 4);  
25         if (width > listView.Width) listView.Width = width;  
26 
27         // 每条ListViewItem的高度加 3 (留出下侧灰色滚动条的位置，绘制到位图时会出现灰色滚动条)
28         int height = rect.Height + rect.Y + (listView.Items.Count * 3);  
29         if (height > listView.Height) listView.Height = height;  
30 
31         // 重绘控件以正确绘制到位图
32         listView.Refresh(); 
33 
34         // 绘制ListView到位图(不绘制灰色滚动条)
35         Bitmap bmpNew = new Bitmap(width - (listView.Columns.Count * 3), height - (listView.Items.Count * 2));  
36         listView.DrawToBitmap(bmpNew, new Rectangle(0, 0, bmpNew.Width, bmpNew.Height)); 
37         
38         listView.Size = sizePre;  
39         listView.Visible = true;  
40         listView.Parent.Controls.Remove(pic);  
41         bmpPre.Dispose();  
42         pic.Dispose();  
43         return bmpNew; 
44     }