拖放列表视图中的C＃ [英] Drag and drop in listview C#

问题描述

您好，我目前正试图让我的程序能够拖动文件，并将其拖放到列表视图。我看到很多样品，其中大部分有以下code
 私人无效listView1_draganddrop（对象发件人，DragEventArgs五）

hi i currently trying to have my program able to drag a file and and drop it into the listview. I have see many sample and most of them have the following code "private void listView1_draganddrop(object sender, DragEventArgs e)"

在我implmeneted那些code我有为数不多的错误我encounter..first是
无过载listview1_SelectedIndexChanged匹配委托系统的事件处理程序

however after i implmeneted those code i have the few error i encounter..first is the no overload for listview1_SelectedIndexChanged match delegate System event handler

和另一个概率是后code为implmeneted我不能拖动任何文件到列表视图

and another prob is the after the code is implmeneted i cannot drag any file into the listview

我已经让我的listview.so的允许压降我想知道我是怎么缺乏，使阻力，在C＃中拖放功能，以及如何我code中的拖放

i have enable the allow drop on my listview.so i was wondering what did i lack of to enable drag and drop function in c# and how to i code the drag and drop

推荐答案

相同的答案我在这里提供：的拖放的ListView C＃

Same answer I provided here: Drag and drop listview C#

您需要执行的dragenter 事件并设置DragEventArgs效应财产。在的dragenter 活动是允许的事情被投进控制。之后，在的DragDrop 鼠标按钮被释放时事件将触发。

You need to implement the DragEnter event and set the Effect property of the DragEventArgs. The DragEnter event is what allows things to be dropped into a control. After that the DragDrop event will fire when the mouse button is released.

下面是一个版本，将允许物体投进一个ListView：

Here is a version that will allow objects to be dropped into the a ListView:

    private void Form1_Load(object sender, EventArgs e)
    {
        listView1.AllowDrop = true;
        listView1.DragDrop += new DragEventHandler(listView1_DragDrop);
        listView1.DragEnter += new DragEventHandler(listView1_DragEnter);
    }

    void listView1_DragEnter(object sender, DragEventArgs e)
    {
        e.Effect = DragDropEffects.Copy;
    }

    void listView1_DragDrop(object sender, DragEventArgs e)
    {
        listView1.Items.Add(e.Data.ToString());
    }

的毫无疑问，你的样品code的取之。 71）的.aspx rel=\"nofollow\">http://msdn.microsoft.com/en-us/library/system.windows.forms.control.allowdrop(v=vs.71).aspx

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