文件拖拽:
效果:将一个文件拖拽到窗体的某个控件时,将该控件的路径显示在该控件上,只要拿到了路径自然可以读取文件中的内容了。
将一个控件的属性AllowDrop设置为true,然后添加DragDrop、DragEnter时间处理函数,如下:
private void txtAppPath_DragEnter(object sender, System.Windows.Forms.DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { e.Effect = DragDropEffects.Link; } else { e.Effect = DragDropEffects.None; } } private void txtAppPath_DragDrop(object sender, System.Windows.Forms.DragEventArgs e) { txtLocalFileName.Text = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString(); }
图片的缩放和拖拽:
一、实现鼠标滚轮控制图片缩放;
1、设置PixtureBox属性:
Dock:none
SizeMode:StretchImage
2、添加事件:
(1)设置绑定图片路径
private void ScrewInfoForm_Shown(object sender, EventArgs e) { //加载装配图纸 string drawingPath = Path.Combine(@"\\192.168.2.136\PCS", productCode + ".png"); try { pbxDrawing.Load(drawingPath); } catch (Exception ex) { MessageBox.Show("加载装配图纸失败,详细:" + ex.Message, "测量", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } }
(2)添加事件1
pbxDrawing.MouseWheel += new MouseEventHandler(pbxDrawing_MouseWheel);
//实现滚轮缩放 private void pbxDrawing_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e) { if (e.Delta < 0) { this.pbxDrawing.Width = this.pbxDrawing.Width * 9 / 10; this.pbxDrawing.Height = this.pbxDrawing.Height * 9 / 10; } else { this.pbxDrawing.Width = this.pbxDrawing.Width * 11 / 10; this.pbxDrawing.Height = this.pbxDrawing.Height * 11 / 10; } }
(3)添加事件2
//实现移动图片 int xPos; int yPos; bool MoveFlag; private void pbxDrawing_MouseDown(object sender, MouseEventArgs e) { this.pbxDrawing.Focus(); MoveFlag = true;//已经按下. xPos = e.X;//当前x坐标. yPos = e.Y;//当前y坐标. } //在picturebox的鼠标按下事件里. private void pbxDrawing_MouseUp(object sender, MouseEventArgs e) { MoveFlag = false; } //在picturebox鼠标移动 private void pbxDrawing_MouseMove(object sender, MouseEventArgs e) { if (MoveFlag) { pbxDrawing.Left += Convert.ToInt16(e.X - xPos);//设置x坐标. pbxDrawing.Top += Convert.ToInt16(e.Y - yPos);//设置y坐标. } }