C#TextBox控件拖拽实现获得文件路径,双击选择文件夹
步骤:
1、 通过DragEnter事件获得被拖入窗口的“信息”(可以是若干文件,一些文字等等),在DragDrop事件中对“信息”进行解析。
2、接受拖放控件的AllowDrop属性必须设置成true;
3、必须在DragEnter事件中设置好要接受拖放的效果,默认为无效果。(所以单独写DragDrop事件是不会具有拖拽功能的)
private void textBox1_DragEnter(object sender, DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { e.Effect = DragDropEffects.Link; this.textBox1.Cursor = System.Windows.Forms.Cursors.Arrow; //指定鼠标形状(更好看) } else { e.Effect = DragDropEffects.None; } } private void textBox1_DragDrop(object sender, DragEventArgs e) { //GetValue(0) 为第1个文件全路径 //DataFormats 数据的格式,下有多个静态属性都为string型,除FileDrop格式外还有Bitmap,Text,WaveAudio等格式 string path = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString(); textBox1.Text = path; this.textBox1.Cursor = System.Windows.Forms.Cursors.IBeam; //还原鼠标形状 }
txt_RootPath.AllowDrop = true; txt_RootPath.DragEnter += Txt_RootPath_DragEnter; txt_RootPath.DragDrop += Txt_RootPath_DragDrop; txt_RootPath.DoubleClick += Txt_RootPath_DoubleClick;
private void Txt_RootPath_DoubleClick(object sender, EventArgs e) { FolderBrowserDialog openFileDialog = new FolderBrowserDialog(); if (openFileDialog.ShowDialog() == DialogResult.OK) { (sender as TextBox).Text = openFileDialog.SelectedPath; this.LoadProject(); } } private void Txt_RootPath_DragDrop(object sender, DragEventArgs e) { string path = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString(); (sender as TextBox).Text = path; (sender as TextBox).Cursor = System.Windows.Forms.Cursors.IBeam; //还原鼠标形状 this.LoadProject(); } private void Txt_RootPath_DragEnter(object sender, DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { e.Effect = DragDropEffects.Link; (sender as Control).Cursor = System.Windows.Forms.Cursors.Arrow; //指定鼠标形状(更好看) } else { e.Effect = DragDropEffects.None; } }
慎于行,敏于思!GGGGGG