如何使 DataGridViewLinkColumn 下划线并更改背景颜色 [英] How to make DataGridViewLinkColumn underline and change background color
问题描述
我有一个 DataGridViewLinkColumn.如何将标题(行 = -1)设为下划线并更改其背景颜色
I have a DataGridViewLinkColumn.How can I make the header(row = -1) as underline and change it's background color
var WarningsColumn = new DataGridViewLinkColumn
{
Name = @"Warnings",
HeaderText = @"Warnings",
DataPropertyName = @"WarningsCount",
AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells,
ReadOnly = true
};
推荐答案
我认为您必须像这样将自定义代码添加到 CellPainting
事件处理程序:
I think you have to add custom code to a CellPainting
event handler like this:
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;
}
看起来不太好但可以帮助你入门,我认为默认背景更好.如果是这样,你只需要调用:e.PaintBackground(e.CellBounds, true);
It looks not good but it can help you get started, I think the default background is better. If so, you just need to call: e.PaintBackground(e.CellBounds, true);
自定义绘画应该应用于 DoubleBuffered 控件.所以我认为你应该像这样创建你自己的自定义 DataGridView(它只是多一点代码):
The custom painting should be applied on DoubleBuffered control. So I think you should create your own custom DataGridView like this (it's just a little more code):
public class CustomDataGridView : DataGridView {
public CustomDataGridView(){
DoubleBuffered = true;
}
}
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