winform重繪

1.重繪文字
#多行文字
a.先定義一個矩形

Rectangle p1 = new Rectangle(10, 0, 200, this.Height);
Rectangle p2 = new Rectangle(210, 0, 200, this.Height);
Rectangle p3 = new Rectangle(410, 0, 100, this.Height);

b.在矩形中寫入文字

TextRenderer.DrawText(g,name,Font,p1,ForeColor,TextFormatFlags.HorizontalCenter|TextFormatFlags.VerticalCenter);
TextRenderer.DrawText(g, time, Font, p2, ForeColor, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter);
TextRenderer.DrawText(g, content, Font, p3, ForeColor, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter);

#單行文字
a.先定義一個點

Point P1 = new Point(this.Width - 100, this.Height - 100);

b.在點后寫入文字

TextRenderer.DrawText(g, "dsadhskldhashdalks", Font, P1, Color.YellowGreen);

#TextFormatFlags.HorizontalCenter將邊框內的文本水平居中對齊 TextFormatFlags.VerticalCenter在邊框內部垂直居中對齊文本

2.畫線
#畫橫線

g.DrawLine(new Pen(Color.Brown), 0, this.Height-1, this.Width, this.Height-1);//畫橫線鋪滿，對於高度不變,橫坐標從0到當前寬度，當前高度從-1到-1，就是畫出一像素的高度

#畫豎線

g.DrawLine(new Pen(Color.Purple), this.Width - 15, 0, this.Width - 15, this.Height - 14);//從（-15，0）到（-15，-14）繪制一條豎線,this.Width - 15-----當前寬度從右邊減去15像素處開始,this.Height - 14------當前高度從下邊減去14像素處開始

#畫虛線

private void panel1_Paint(object sender, PaintEventArgs e)
{
Control P = (Control)sender;
Pen pen = new Pen(Color.FromArgb(255, 0, 0), 5);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Custom;//虛線的樣式
pen.DashPattern = new float[] { 2, 2 };//設置虛線中實點和空白區域之間的間隔
Graphics g = e.Graphics;
g.DrawLine(pen, 0, 0, 0, P.Height - 1);
}

#對panel1重繪，this：當前頁面為panel1所在的頁面