winform中，pictureBox添加边框问题！！急需求解
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悬赏园豆：100
[已解决问题]
解决于 2016-04-28 15:54
我现在动态添加好几个picturebox，想实现点击picturebox为他绘制一个边框，然后再点击另一个picturebox取消前一个的边框，为第二个加一个边框！！！
目前只做到了点击加边框但不会取消前一个的边框代码如下：怎么修改啊
private void pic_Click(object sender, EventArgs e)
{
PictureBox p = sender as PictureBox;
openurl = p.Tag.ToString();
Graphics pictureborder = p.CreateGraphics();
Pen pen = new Pen(Color.Orange, 4);
pictureborder.DrawRectangle(pen, p.ClientRectangle.X, p.ClientRectangle.Y, p.ClientRectangle.X + p.ClientRectangle.Width, p.ClientRectangle.Y +p.ClientRectangle.Height);
}
最佳答案
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在这个方法后面加上获取其他PictureBox 的代码，
然后然后遍历用底色在画一遍边框就好！
收获园豆：100
picturebox是放在usercontrol里的，都是通过点击按钮，添加的。有代码可以给我参考一下吗？新手不太会，先谢谢啦
@C#求学路:加上这个试试，手打可能有误
private void pic_Click(object sender, EventArgs e)
{
PictureBox p = sender as PictureBox;
openurl = p.Tag.ToString();
Graphics pictureborder = p.CreateGraphics();
Pen pen = new Pen(Color.Orange, 4);
pictureborder.DrawRectangle(pen, p.ClientRectangle.X, p.ClientRectangle.Y, p.ClientRectangle.X + p.ClientRectangle.Width, p.ClientRectangle.Y +p.ClientRectangle.Height);
foreach(Control c in usercontrol.Controls)
{
PictureBox p1 = c as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(p1.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
}
@刘宏玺: (Control c in usercontrol.Controls)这里报错了
对象引用对于非静态的字段、方法或属性“Control.Controls”是必需的
@C#求学路: 你的usercontrol是你的自定义控件吧？
你先告诉我你把动态的usercontrol放在那里了？
我估计是加到了窗口里面
你先告诉我你的usercontrol中的PictureBox叫啥名，现在知道的太少了，或者你自己研究下，思路就是上面那个代码的思路
@刘宏玺: 自定义控件的名字是Usercontrol picturebox是我通过代码添加到自定义控件中的
创建picturebox的代码在这
PictureBox p = new PictureBox();
p.Click += new EventHandler(pic_Click);
p.Name = "pic1";
p.BorderStyle = BorderStyle.FixedSingle;
p.SizeMode = PictureBoxSizeMode.CenterImage;
p.Size = new Size(145, 145);
if (!d1.Url.Equals("111111111111"))
{
p.Image = image;
}
uc1.Controls.Add(p);
@C#求学路:
foreach(Control c in uc1.Controls)
{
PictureBox p1 = c as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(p1.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
这样试试
@刘宏玺: 还是不对，我那个创建picturebox的代码是在一个添加按钮里写的，uc1.Contols，uc1不存在，那个uc1是在这个方法里写的，这个方法是添加自定义控件和picturebox
private void button1_Click(object sender, EventArgs e)
{
XmlUtil xm = new XmlUtil();
Dictionary<string, dpclass> d = xm.LoadItems();
foreach (var item in d.Values)
{
dpclass d1 = (dpclass)item;
// MessageBox.Show(d1.Url);
Usercontorl uc1 = new Usercontorl(d1.Name, flowLayoutPanel1);
System.Drawing.Icon dd = uc1.SetIcon(d1.Url);
Image image = dd.ToBitmap();
PictureBox p = new PictureBox();
p.Click += new EventHandler(pic_Click);
p.Name = "pic1";
p.BorderStyle = BorderStyle.FixedSingle;
p.SizeMode = PictureBoxSizeMode.CenterImage;
p.Size = new Size(145, 145);
if (!d1.Url.Equals("111111111111"))
{
p.Image = image;
}
uc1.Controls.Add(p);
// pb.Image = image;
//uc.Tag = item.Name;
this.flowLayoutPanel1.Controls.Add(uc1);
}
@C#求学路: 早放代码不就得了！这样写
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = c.Controls[0] as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(p1.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
@C#求学路: 有点bug
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = uc1.Controls[0] as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(p1.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
@刘宏玺: if(p !=p1)那个p是哪里的，我找不到了- -！
@C#求学路: p是你事件里的那个
private void pic_Click(object sender, EventArgs e)
{
PictureBox p = sender as PictureBox;
openurl = p.Tag.ToString();
Graphics pictureborder = p.CreateGraphics();
Pen pen = new Pen(Color.Orange, 4);
pictureborder.DrawRectangle(pen, p.ClientRectangle.X, p.ClientRectangle.Y, p.ClientRectangle.X + p.ClientRectangle.Width, p.ClientRectangle.Y +p.ClientRectangle.Height);
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = uc1.Controls[0] as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(p1.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
}
@刘宏玺: 我把new的picturebox覆盖了。。。找到问题了
@刘宏玺: 还是没有取消掉上一个的picturebox边框啊
@C#求学路:
private void pic_Click(object sender, EventArgs e)
{
PictureBox p = sender as PictureBox;
openurl = p.Tag.ToString();
Graphics pictureborder = p.CreateGraphics();
Pen pen = new Pen(Color.Orange, 4);
pictureborder.DrawRectangle(pen, p.ClientRectangle.X, p.ClientRectangle.Y, p.ClientRectangle.X + p.ClientRectangle.Width, p.ClientRectangle.Y +p.ClientRectangle.Height);
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = uc1.Controls[0] as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(this.BackColor, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
}
换成this试试
@刘宏玺: 换成this所有的picturebox边框都变成了白色，点击哪个哪个变成orange，实现了点击切换，但是我不想让他们的边框都变成白的啊
@C#求学路: 你看看原来的背景是什么颜色，然后把this.BackColor换成那个颜色不就解决问题了！
@C#求学路: 我估计是System.Drawing.SystemColors.Control
@刘宏玺: 窗体的背景是个图片，usercontrol和picturebox的backcolor都是Transparent
@C#求学路: 那你换一下试试能实现不！我估计差不多了！
@刘宏玺: System.Drawing.SystemColors.Control换这个试了，跟this.backcolor一样的效果
@C#求学路: 你都说了usercontrol和picturebox的backcolor都是Transparent
那你就使用Transparent啊
@刘宏玺: Pen pen1 = new Pen(this.BackColor, 4);改这一句吗？我不太会啊 - -#
@C#求学路:
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = uc1.Controls[0] as PictureBox;
if(p != p1)
{
Graphics pictureborder1= p1.CreateGraphics();
Pen pen1 = new Pen(Color.Transparent, 4);
pictureborder1.DrawRectangle(pen1, p1.ClientRectangle.X, p1.ClientRectangle.Y, p1.ClientRectangle.X + p1.ClientRectangle.Width, p1.ClientRectangle.Y +p1.ClientRectangle.Height);
}
}
@刘宏玺: 不行啊，点完控件之后只加颜色不清除了
@C#求学路: 这样写试试
Pen pen1 = new Pen(this.flowLayoutPanel1.BackColor, 4);
@刘宏玺: 效果没变。。。还是只能点击添加边框，不能清除
@C#求学路: 我就纳闷了，你截个图上来我看看是啥样
@刘宏玺: 这样写试试
foreach(Control c in this.flowLayoutPanel1.Controls)
{
Usercontorl uc1 = c as Usercontorl;
PictureBox p1 = uc1.Controls[0] as PictureBox;
if(p != p1)
{
p1.Invalidate();
}
}
@刘宏玺: 天呐！这样写终于对了。只需要一句，谢谢你啦
其他回答(2)
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1.把picturebox放到一个容器里面设置，然后动态设置容器的border大小就行了。
2. 把另一个的颜色重置下
pictureBox2.CreateGraphics().Clear(pictureBox2.BackColor);
因为我的picturebox是放到usercontrol里的1个usercontrol里只有1个picturebox，动态添加，写pictureBox2.CreateGraphics().Clear(pictureBox2.BackColor);会报错。
这要怎么解决啊，谢谢
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现在还有人用winform啊 感觉winforem有点跟不上了啊
