在多个椭圆上创建多个标签
Create multiple label over the multiple ellipse
我有 6 个 ellipse
和 6 个 label
。我想在 ellipse
上添加 label
s。 label
s 中的 2 个可以,但其他的不行。
在调试模式下没有错误。
代码如下:
private void Form1_Paint(object sender, PaintEventArgs e)
{
int locY = 200, locX = 10, i = 0;
for (int k = 0; k < 3; k++)
{
locX += 40;
for (int j = 0; j < 2; j++)
{
locY += 30;
Pen pen = new Pen(Color.Red, 10);
e.Graphics.DrawEllipse(pen, new Rectangle(locX, locY, 10, 10));
Label label = new Label();
label.Text = i.ToString();
label.Location = new Point(locX,locY);
label.BackColor = Color.Transparent;
Controls.Add(label);
i++;
}
locY = 200;
}
}
这是输出:
您还应该在循环之外创建该 Pen 并确保将其丢弃。
这是一个使用 DrawString() 的示例,如评论中所述:
private void Form1_Paint(object sender, PaintEventArgs e)
{
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
int locY = 200, locX = 10, i = 0;
using (Pen pen = new Pen(Color.Red, 10))
{
for (int k = 0; k < 3; k++)
{
locX += 40;
for (int j = 0; j < 2; j++)
{
locY += 30;
Rectangle rc = new Rectangle(locX, locY, 10, 10);
e.Graphics.DrawEllipse(pen, rc);
SizeF szF = e.Graphics.MeasureString(i.ToString(), this.Font);
Rectangle rc2 = new Rectangle(new Point(rc.Left + rc.Width / 2, rc.Top + rc.Height / 2), new Size(1, 1));
rc2.Inflate((int)szF.Width, (int)szF.Height);
e.Graphics.DrawString(i.ToString(), this.Font, Brushes.Black, rc2, sf);
i++;
}
locY = 200;
}
}
}
我有 6 个 ellipse
和 6 个 label
。我想在 ellipse
上添加 label
s。 label
s 中的 2 个可以,但其他的不行。
在调试模式下没有错误。
代码如下:
private void Form1_Paint(object sender, PaintEventArgs e)
{
int locY = 200, locX = 10, i = 0;
for (int k = 0; k < 3; k++)
{
locX += 40;
for (int j = 0; j < 2; j++)
{
locY += 30;
Pen pen = new Pen(Color.Red, 10);
e.Graphics.DrawEllipse(pen, new Rectangle(locX, locY, 10, 10));
Label label = new Label();
label.Text = i.ToString();
label.Location = new Point(locX,locY);
label.BackColor = Color.Transparent;
Controls.Add(label);
i++;
}
locY = 200;
}
}
这是输出:
您还应该在循环之外创建该 Pen 并确保将其丢弃。
这是一个使用 DrawString() 的示例,如评论中所述:
private void Form1_Paint(object sender, PaintEventArgs e)
{
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
int locY = 200, locX = 10, i = 0;
using (Pen pen = new Pen(Color.Red, 10))
{
for (int k = 0; k < 3; k++)
{
locX += 40;
for (int j = 0; j < 2; j++)
{
locY += 30;
Rectangle rc = new Rectangle(locX, locY, 10, 10);
e.Graphics.DrawEllipse(pen, rc);
SizeF szF = e.Graphics.MeasureString(i.ToString(), this.Font);
Rectangle rc2 = new Rectangle(new Point(rc.Left + rc.Width / 2, rc.Top + rc.Height / 2), new Size(1, 1));
rc2.Inflate((int)szF.Width, (int)szF.Height);
e.Graphics.DrawString(i.ToString(), this.Font, Brushes.Black, rc2, sf);
i++;
}
locY = 200;
}
}
}