将文件url从winforms控件拖到外部应用程序 [英] Drag a file url from a winforms control to external application

问题描述

我需要从datagridview拖动表示文件的行，并且能够将它们拖放到任何Windows应用程序，就像我正在从Windows资源管理器中拖动一样，我对于遵循的过程有些困惑。

i need to drag rows representing files from a datagridview, and be able to drop them to any windows application as if i was doing a drag from the windows explorer, and i'm a little bit confused regarding the procedure to follow.

目前我有以下事件处理程序

For the moment i have the following event handler

private void gridFiles_MouseDown(object sender, MouseEventArgs e)
{
    gridFiles.DoDragDrop(gridFiles.SelectedRows.Count, DragDropEffects.Move);
}

事情是我也需要能够将行放入在我的应用程序中控制，在这种情况下，我希望能够获取有关行的应用程序特定信息。

The thing is that i also need to be able to drop the rows into a control inside my application, and that in this case i would like to be able to get application specific information about the rows.

推荐答案

我终于明白了。程序如下：

I finally figured it out. The procedure is as follows :

• 创建一个包含文件路径数组的DataObject。



• 将DataObject传递到DoDragDrop过程

示例代码：

if (is_in_selection)
{
    sel_rows = from DataGridViewRow r in gridFiles.SelectedRows select r;
    var files = (from DataGridViewRow r in gridFiles.SelectedRows select all_files[r.Index]);
    string[] files_paths = files.Select((f) => f.FullPathName).ToArray();
    var data = new DataObject(DataFormats.FileDrop, files_paths);
    gridFiles.DoDragDrop(data, DragDropEffects.Copy);
}

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