1 #region listview拖拽事件
 2         private void listViewFolder_DragDrop(object sender, DragEventArgs e)
 3         {
 4             try
 5             {
 6                 String[] files = e.Data.GetData(DataFormats.FileDrop, false) as String[]; //必须用数组接收
 7                 string[] filters = ".doc|.ppt|.xlsx|.pdf|.txt".Split('|');
 8                 int result = 0;
 9                 foreach (string item in files)
10                 {
11                     foreach (string filter in filters)
12                     {
13                         if (item.Contains(filter))
14                         {
15                             BindListviewData(item);
16                             result = 1;
17                         }
18                     }
19                 }
20                 if (result == 0)
21                     MessageBoxForm.Show("系统提示", "文件格式不支持,请选择正确的格式！目前支持的文件格式有DOCX(DOC),PPTX(PPT), \r\n Excel,PDF,TXT");
22             }
23             catch (Exception e1)
24             {
25                 MessageBoxForm.Show("警告", e1.Message);
26             }
27         }
28 
29         private void listViewFolder_DragEnter(object sender, DragEventArgs e)
30         {
31             if (e.Data.GetDataPresent(DataFormats.FileDrop))
32             {
33                 e.Effect = DragDropEffects.Copy;
34             }
35             else
36             {
37                 e.Effect = DragDropEffects.None;
38             }
39         }
40 
41         private void listViewFolder_ItemDrag(object sender, ItemDragEventArgs e)
42         {
43             if (e.Button == MouseButtons.Left)
44             {
45                 if (this.listViewFolder.SelectedItems.Count <= 0)
46                 {
47                     return;
48                 }
49 
50                 //put selected files into a string array
51 
52                 string[] files = new String[this.listViewFolder.SelectedItems.Count];
53 
54                 int i = 0;
55                 foreach (ListViewItem item in this.listViewFolder.SelectedItems)
56                 {
57                     files[i++] = item.Tag.ToString();
58                 }
59 
60                 //create a dataobject holding this array as a filedrop
61 
62                 DataObject data = new DataObject(DataFormats.FileDrop, files);
63 
64                 //also add the selection as textdata
65 
66                 data.SetData(DataFormats.StringFormat, files[0]);
67 
68                 //Do DragDrop
69                 DoDragDrop(data, DragDropEffects.Copy);
70             }
71         }
72         #endregion