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:
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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
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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
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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
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//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. } } |
总结
以上所述是小编给大家介绍的c# 文件拖拽和pixturBox缩放与拖拽,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://www.cnblogs.com/Liyuting/archive/2017/10/31/7759948.html