private void dgvPassenger_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
//是否是选中状态
if ((e.State & DataGridViewElementStates.Selected) ==
DataGridViewElementStates.Selected)
{
// 计算选中区域Size
int width = dgvPassenger.Columns.GetColumnsWidth(DataGridViewElementStates.Visible);// +dgvPassenger.Width - 2;
Rectangle rowBounds = new Rectangle(
0, e.RowBounds.Top, width,
e.RowBounds.Height - 1);
// 绘制选中背景色
using (LinearGradientBrush backbrush =
new LinearGradientBrush(rowBounds,
Color.Wheat,
Color.BurlyWood, 90.0f))
{
e.Graphics.FillRectangle(backbrush, rowBounds);
e.PaintCellsContent(rowBounds);
e.Handled = true;
}
}
}
/// <summary>
/// Row重绘前处理
/// </summary>
/// <param name="e"></param>
protected override void OnRowPrePaint(DataGridViewRowPrePaintEventArgs e)
{
base.OnRowPrePaint(e);
//是否是选中状态
if ((e.State & DataGridViewElementStates.Selected) ==
DataGridViewElementStates.Selected)
{
// 计算选中区域Size
int width = this.Columns.GetColumnsWidth(DataGridViewElementStates.Visible) + _RowHeadWidth;
Rectangle rowBounds = new Rectangle(
0, e.RowBounds.Top, width,
e.RowBounds.Height);
// 绘制选中背景色
using (LinearGradientBrush backbrush =
new LinearGradientBrush(rowBounds,
Color.FromArgb(167, 222, 214),
Color.FromArgb(167, 222, 214),
//e.InheritedRowStyle.ForeColor,
90.0f))
{
e.Graphics.FillRectangle(backbrush, rowBounds);
e.PaintCellsContent(rowBounds);
e.Handled = true;
}
}
}
private void dataGridView1_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
//if (e.RowIndex >= dataGridView1.Rows.Count - 1)
// return;
DataGridViewRow dgr = dataGridView1.Rows[e.RowIndex];
try
{
//dgr.Cells[0]是当前性别列的索引值，用以确定判断哪一列的值
if (double.Parse(dgr.Cells[3].Value.ToString()) < 10)
{
//定义画笔，使用颜色是深灰。
using (SolidBrush brush = new SolidBrush(Color.Red))
{
//利用画笔填充当前行
e.Graphics.FillRectangle(brush, e.RowBounds);
//将值重新写回当前行。
e.PaintCellsContent(e.ClipBounds);
e.Handled = true;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void PaintCellsContent_InvalidRowIndex_ThrowsInvalidOperationException(int rowIndex)
{
using (var image = new Bitmap(10, 10))
using (Graphics graphics = Graphics.FromImage(image))
{
var dataGridView = new DataGridView();
dataGridView.Columns.Add("name", "text");
var e = new DataGridViewRowPrePaintEventArgs(dataGridView, graphics, Rectangle.Empty, Rectangle.Empty, rowIndex, DataGridViewElementStates.Displayed, null, new DataGridViewCellStyle(), false, false);
Assert.Throws <InvalidOperationException>(() => e.PaintCellsContent(new Rectangle(1, 2, 3, 4)));
}
}
public void PaintCellsContent_ValidRowIndex_Success()
{
using (var image = new Bitmap(10, 10))
using (Graphics graphics = Graphics.FromImage(image))
{
var dataGridView = new DataGridView();
dataGridView.Columns.Add("name", "text");
var e = new DataGridViewRowPrePaintEventArgs(dataGridView, graphics, Rectangle.Empty, Rectangle.Empty, 0, DataGridViewElementStates.Displayed, null, new DataGridViewCellStyle(), false, false);
e.PaintCellsContent(new Rectangle(1, 2, 3, 4));
}
}
private void gridSchLibPrimitives_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
if (_loading || e.RowIndex < 0)
{
return;
}
// Draw background depending on the "display mode" matching the current one
var primitive = (SchPrimitive)gridSchLibPrimitives.Rows[e.RowIndex].Tag;
if (!primitive.IsOfCurrentDisplayMode)
{
e.PaintCellsBackground(e.RowBounds, (e.State & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected);
using (var brush = new HatchBrush(HatchStyle.DiagonalCross, Color.FromKnownColor(KnownColor.ControlDark), Color.Transparent))
{
e.Graphics.FillRectangle(brush, e.RowBounds);
}
// Draw contents
e.PaintCellsContent(e.RowBounds);
e.Handled = true;
}
}