winforms界面小技巧1

private void groupBox1_Paint(object sender, PaintEventArgs e)
{
     e.Graphics.Clear(groupBox1.BackColor);
     e.Graphics.DrawString(groupBox1.Text, groupBox1.Font, Brushes.Black, 10, 1);
     e.Graphics.DrawLine(Pens.Black, 1, 7, 8, 7);
     e.Graphics.DrawLine(Pens.Black, e.Graphics.MeasureString(groupBox1.Text, groupBox1.Font).Width + 8, 7, groupBox1.Width - 2, 7);
     e.Graphics.DrawLine(Pens.Black, 1, 7, 1, groupBox1.Height - 2);
     e.Graphics.DrawLine(Pens.Black, 1, groupBox1.Height - 2, groupBox1.Width - 2, groupBox1.Height - 2);
     e.Graphics.DrawLine(Pens.Black, groupBox1.Width - 2, groupBox1.Height - 2, groupBox1.Width - 2, 7);
}

private void tableLayoutPanel1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Color FColor = System.Drawing.Color.FromArgb(((int)(((byte)(184)))), ((int)(((byte)(147)))), ((int)(((byte)(201)))));
            Color TColor = System.Drawing.Color.FromArgb(((int)(((byte)(84)))), ((int)(((byte)(42)))), ((int)(((byte)(113)))));
            Brush b = new LinearGradientBrush(this.tableLayoutPanel1.ClientRectangle, FColor, TColor, LinearGradientMode.Vertical);// .ForwardDiagonal);
            g.FillRectangle(b, this.tableLayoutPanel1.ClientRectangle);
        }
        private void btn_status_Paint(object sender, PaintEventArgs e)
        {
            Bitmap backimg = new Bitmap(btn_status.Width, btn_status.Height);
            Graphics g = Graphics.FromImage(backimg); ;
            Color FColor = System.Drawing.Color.Lavender;
            Color TColor = System.Drawing.Color.FromArgb(((int)(((byte)(184)))), ((int)(((byte)(147)))), ((int)(((byte)(201)))));
            Brush b = new LinearGradientBrush(this.btn_status.ClientRectangle, FColor, TColor, LinearGradientMode.Vertical);// .ForwardDiagonal);
            g.FillRectangle(b, this.btn_status.ClientRectangle);
            btn_status.BackgroundImage = backimg;
            //Graphics g = e.Graphics;
            //LinearGradientBrush myBrush = new LinearGradientBrush(this.btn_status.ClientRectangle, Color.White, Color.Blue, LinearGradientMode.Vertical);
            //g.FillRectangle(myBrush, this.btn_status.ClientRectangle);
        }

ListViewItem item = new ListViewItem();
item.SubItems[0].Text = DateTime.Now.ToString("yyyy-MM-dd hh:MM:ss");
item.SubItems.Add(attention[i]);
item.UseItemStyleForSubItems = false;
item.SubItems[1].BackColor = Color.CornflowerBlue;
listView1.Items.Add(item);
// 第一列宽度 + 第二列宽度 = 工作区宽度
listView1.Columns[1].Width = listView1.ClientSize.Width - listView1.Columns[0].Width;