Winform中实现拖拽文件到ListView获取文件类型(附代码下载)

桃扇骨 2023-10-08 10:41 22阅读 0赞

## 场景 ##

### 效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

注：

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## 实现 ##

新建一个form窗体，然后在窗体中拖拽一个ListView。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

在form的shown事件中进行窗体的初始化。

private void Form1_Shown(object sender, EventArgs e)
            {
                listView1.GridLines = true;//在各数据之间形成网格线
                listView1.View = View.Details;//显示列名称
                listView1.FullRowSelect = true;//在单击某项时，对其进行选中
                listView1.HeaderStyle = ColumnHeaderStyle.Nonclickable;//隐藏列标题
    
                listView1.Columns.Add("文件名", listView1.Width - 65, HorizontalAlignment.Right);//设置头像
                listView1.Columns.Add("类型", 60, HorizontalAlignment.Center);//设置头像
            }

然后编写ListView的DragEnter事件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

在事件中设置拖放目标中放置类型为复制。然后检索数据格式相关联的数据。

最后传递给方法Data\_List来给ListView赋值。

private void listView1_DragEnter(object sender, DragEventArgs e)
            {
                e.Effect = DragDropEffects.Copy;       //设置拖放操作中目标放置类型为复制
                String[] str_Drop = (String[])e.Data.GetData(DataFormats.FileDrop, true);//检索数据格式相关联的数据
                Data_List(listView1, str_Drop[0]);
            }

赋值方法

public void Data_List(ListView LV, string F)  //Form或MouseEventArgs添加命名空间using System.Windows.Forms;
            {
                string enlarge = "";
                //验证是否是三个字母结尾的后缀名，是则截取后三个后缀名，否则后缀名为空
                if (F.LastIndexOf(".") == F.Length - 4)
                {
                    enlarge = F.Substring(F.LastIndexOf(".") + 1, 3);
                }
                ListViewItem item = new ListViewItem(F);
                item.SubItems.Add(enlarge);
                LV.Items.Add(item);
            }

### 代码下载 ###

[https://download.csdn.net/download/BADAO\_LIUMANG\_QIZHI/12025760][https_download.csdn.net_download_BADAO_LIUMANG_QIZHI_12025760]

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[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191212084814380.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191212084840683.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_download.csdn.net_download_BADAO_LIUMANG_QIZHI_12025760]: https://download.csdn.net/download/BADAO_LIUMANG_QIZHI/12025760