您好,当我双击列表视图时如何启用拖动事件处理程序?
Hi how to I enable drag event handler when I double click on the listview?
这是我双击列表视图后得到的
This is what I get after double-clicking on the listview
private void listView1(object sender, EventArgs e)
但是,我希望它是
private void listView(object sender,DragEventArgs e)
我该怎么做..?
我尝试了很多方法,例如:
I have tried many way such as:
private void Form_Load(object sender, EventArgs e)
{
// Enable drag and drop for this form
// (this can also be applied to any controls)
this.AllowDrop = true;
// Add event handlers for the drag & drop functionality
this.DragEnter += new DragEventHandler(Form_DragEnter);
this.DragDrop += new DragEventHandler(Form_DragDrop);
}
你需要实现DragEnter事件并设置DragEventArgs的Effect属性.DragEnter 事件允许将内容拖放到控件中.之后,DragDrop 事件将在释放鼠标按钮时触发.
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.
这是一个允许将对象放入 ListView 的版本:
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());
}
毫无疑问,您的示例代码来自:http://msdn.microsoft.com/en-us/library/system.windows.forms.control.allowdrop(v=vs.71).aspx
No doubt your sample code was taken from : http://msdn.microsoft.com/en-us/library/system.windows.forms.control.allowdrop(v=vs.71).aspx
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