如何使DataGridViewLinkColumn下划线并更改背景颜色(How to make Da

2019-10-30 09:28发布

我有一个DataGridViewLinkColumn.How我可以做头(行= -1)为下划线,并改变它的背景颜色

var WarningsColumn = new DataGridViewLinkColumn
            {

                Name = @"Warnings",
                HeaderText = @"Warnings",
                DataPropertyName = @"WarningsCount",
                AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells,               
                ReadOnly = true
            };

Answer 1:

我认为你必须自定义代码添加到CellPainting这样的事件处理程序:

 Point spot;
 private void dataGridView_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
    {
        if (e.RowIndex == -1 && e.ColumnIndex > -1)
        {
            e.Handled = true;
            if (e.CellBounds.Contains(spot))//Mouse over cell
            {
                PaintCellBackground(e.Graphics, Color.Red, e.CellBounds);
            }
            else //Mouse leave cell
            {
                PaintCellBackground(e.Graphics, Color.Green, e.CellBounds);
            }
            StringFormat sf = new StringFormat(){Alignment=StringAlignment.Center, LineAlignment = StringAlignment.Center };
            Font f = new Font(e.CellStyle.Font, FontStyle.Underline);
            e.Graphics.DrawString(e.Value.ToString(), f, new SolidBrush(e.CellStyle.ForeColor), e.CellBounds, sf);
        }
    } 
 private void PaintCellBackground(Graphics g, Color c, Rectangle rect)
    {
        Rectangle topHalf = new Rectangle(rect.Left, rect.Top, rect.Width, rect.Height / 2);
        Rectangle bottomHalf = new Rectangle(rect.Left, topHalf.Bottom, rect.Width, topHalf.Height);
        g.FillRectangle(new SolidBrush(Color.FromArgb(150, c)), topHalf);
        g.FillRectangle(new SolidBrush(c), bottomHalf);
        ControlPaint.DrawBorder(g, rect, Color.Gray, 1, ButtonBorderStyle.Solid, 
                                         Color.Gray, 0, ButtonBorderStyle.Solid, 
                                         Color.Gray, 1, ButtonBorderStyle.Solid, 
                                         Color.Gray, 0, ButtonBorderStyle.Solid);
    }
    //Reset spot when mouse leave
    private void dataGridView_MouseLeave(object sender, EventArgs e)
    {
        spot = Point.Empty;
    }
    //Update spot when mouse move 
    private void dataGridView_MouseMove(object sender, MouseEventArgs e)
    {
        spot = e.Location;
    }

它看起来并不好,但它可以帮助你开始,我觉得默认的背景是更好的。 如果是这样,你只需要调用: e.PaintBackground(e.CellBounds, true);

UPDATE

在风俗画应该DoubleBuffered控制应用。 所以,我认为你应该这样创建自己的自定义的DataGridView(它只是一点点更多的代码):

public class CustomDataGridView : DataGridView {
    public CustomDataGridView(){
       DoubleBuffered = true;
    }
}


Answer 2:

尝试这个:

dataGridView1.EnableHeadersVisualStyles = false;

dataGridView1.ColumnHeadersDefaultCellStyle
    = new DataGridViewCellStyle {BackColor = Color.Yellow, Font = new Font(dataGridView1.Font, FontStyle.Underline)};

从在MSDN参考DataGridView.ColumnHeadersDefaultCellStyle属性 :

如果启用视觉样式和EnableHeadersVisualStyles设置为true,所有标题单元格除了TopLeftHeaderCell使用的是当前的主题画和ColumnHeadersDefaultCellStyle值将被忽略。

所以,你可以将它设置为False ,然后覆盖默认值,然后你会拥有这样的事情(快速和肮脏的测试,以确保它的工作原理):

编辑:

要应用样式到一列,用这个来代替(你会希望你设置的密码后,把这个DataSource中的DataGridView ):

dataGridView1.Columns["your_column_name"].HeaderCell.Style
    = new DataGridViewCellStyle { BackColor = Color.Yellow, Font = new Font(dataGridView1.Font, FontStyle.Underline) };



文章来源: How to make DataGridViewLinkColumn underline and change background color