Question

用C#实现坐标上的画点

private void TextBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
int x,y = int.Parse(textBox1.Text);
Point point =newPoint(x,y);
Graphics g = Panel.CreateGraphics();
g.FillEllipse(Brushes.Red,newRectangle());
}
} 如上代码 按回车后显示点 怎么修改它 求大神 焦急等待着

Answer 1

        //在textbox输入10,10并回车注意中间是英文逗号
        private void textBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                string[] ss = textBox1.Text.Trim().Split(new char[] { ',' });

                int x = Convert.ToInt32(ss[0]);
                int y = Convert.ToInt32(ss[1]);

                Graphics g = textBox1.CreateGraphics();
                g.FillEllipse(Brushes.Red, new Rectangle(0, 0, x, y));
            }
        }

Answer 2

不行就new graphics(), 然后再计算那个点的位置.