C#中的拖动问题

[fxgang]

开发环境 Vs2008 c#
我实现这样一个操作：
用一个SplitContainer来放置一个PictureBox和ListView
在ListView中显示的是文件名称列表，让后我在该列表中拖动文件名称到PictureBox中进行显示。
--以下代码为PictureBox
ScenePictureBox.Dock = DockStyle.Fill;
ScenePictureBox.AllowDrop = true;
ScenePictureBox.BackColor = Color.Transparent;
ScenePictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
ScenePictureBox.Image = Image.FromFile(clsEnmt.objSystemInfo.ResImg + objRes.objPreResolut.FUnitPicture);
ScenePictureBox.DragEnter += new DragEventHandler(ScenePictureBox_DragEnter);
ScenePictureBox.DragDrop += new DragEventHandler(ScenePictureBox_DragDrop);
ScenePictureBox.DragOver += new DragEventHandler(ScenePictureBox_DragOver);
--以下代码为ListView
SceneListView.Dock = DockStyle.Fill;
SceneListView.AllowDrop = true;
SceneListView.ItemDrag += new ItemDragEventHandler(SceneListView_ItemDrag);
--事件1.
private void SceneListView_ItemDrag(object sender, ItemDragEventArgs e)
{
// this.Text = e.Item.ToString();
ListView.SelectedListViewItemCollection cllSelItemTemp = SceneListView.SelectedItems;
ListViewItem objTemp=cllSelItemTemp[0];
SceneListView.DoDragDrop(objTemp.SubItems[2].Text, DragDropEffects.Copy | DragDropEffects.Move);
}

这是我发现PictureBox禁止我拖入ListViewItem对象上的文件名称。

[zgke]

void ScenePictureBox_DragDrop(object sender, DragEventArgs e)
{
this.Text = e.Data.GetData("Text").ToString();
}

void ScenePictureBox_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetData("Text") != null)
{
e.Effect = DragDropEffects.All;
}
}

这样看看.

[黑脚印_DarkSpoor]

ScenePictureBox.AllowDrop = true;

[黑脚印_DarkSpoor]

ScenePictureBox.AllowDrop = true;
ScenePictureBox.DragDrop += new DragEventHandler(ScenePictureBox_DragDrop);
ScenePictureBox.DragOver += new DragEventHandler(ScenePictureBox_DragOver);

void ScenePictureBox_DragOver(object sender, DragEventArgs e)
{
    //throw new Exception("The method or operation is not implemented.");
    e.Effect = DragDropEffects.All;
}

void ScenePictureBox_DragDrop(object sender, DragEventArgs e)
{
    //throw new Exception("The method or operation is not implemented.");
    if (e.Data.GetDataPresent(typeof(string)))
    {
        string filename = (string)e.Data.GetData(typeof(string));
        Debug.WriteLine(filename );
    }
}

void SceneListView_ItemDrag(object sender, ItemDragEventArgs e)
{
    //throw new Exception("The method or operation is not implemented.");
    ListViewItem lvi = e.Item as ListViewItem;
    string filename = lvi.SubItems[2].Text;
    //Debug.WriteLine(filename);

    SceneListView.DoDragDrop(filename, DragDropEffects.Copy | DragDropEffects.Move);
}