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:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
//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