如何在winforms中为网格的背景颜色添加填充

Question

我正在尝试在 winforms 的 dataGridView 中使用填充，这样当我更改单元格的背景颜色属性时，它不会绘制整个单元格。然而，填充属性似乎只适用于单元格的文本，而不适用于背景颜色...有什么办法可以使它起作用吗？

Answer 1

我设法使用网格的 CellPainting 方法做到了

    private void Grid_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
    {
        // If it's not the column you want or it's the header
        if (e.ColumnIndex != _grid.Columns["Deadline"].Index || e.RowIndex < 0)
            return;

        Color foreColor = e.CellStyle.ForeColor;
        Color rectangleColor = ColorTranslator.FromHtml("#80AC7B");
        Color backColor;
        if (_grid.Rows[e.RowIndex].Selected)
            backColor = ColorTranslator.FromHtml("#DFF5E0");
        else
            backColor = ColorTranslator.FromHtml("#FFFFFF");

        // Rectangle to keep the background the same as the rest of the grid
        Rectangle backgroundRect = new Rectangle(e.CellBounds.X,
            e.CellBounds.Y, e.CellBounds.Width,
            e.CellBounds.Height);

        // Rectangle that will be colored above the first one
        // Padding of 5 for all borders
        Rectangle coloredRect = new Rectangle(e.CellBounds.X + 5,
            e.CellBounds.Y + 5, e.CellBounds.Width - 10,
            e.CellBounds.Height - 10);

        using (
            SolidBrush textBrush = new SolidBrush(foreColor),
            backColorBrush = new SolidBrush(backColor),
            coloredRectBrush = new SolidBrush(rectangleColor),
            gridBrush = new SolidBrush(_grid.GridColor))
        {
            // Draw the background rectangle
            e.Graphics.FillRectangle(backColorBrush, backgroundRect);

            using (Pen gridLinePen = new Pen(gridBrush))
            {
                // Draw the grid lines (only the right and bottom lines;
                // DataGridView takes care of the others).
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left,
                    e.CellBounds.Bottom - 1, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom - 1);
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1,
                    e.CellBounds.Top, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom);
            }

            // Draw the colored rectangle
            e.Graphics.FillRectangle(coloredRectBrush, coloredRect);

            // Set center alignment for the text
            StringFormat sf = new StringFormat();
            sf.LineAlignment = StringAlignment.Center;
            sf.Alignment = StringAlignment.Center;

            // Draw the text in the cell above the colored rectangle
            if (e.Value != null)
                e.Graphics.DrawString((string)e.Value, e.CellStyle.Font, textBrush, coloredRect, sf);
            else
                e.Graphics.DrawString("-", e.CellStyle.Font, textBrush, coloredRect, sf);

            e.Handled = true;
        }
    }

如何在winforms中为网格的背景颜色添加填充

How to add padding to the background color of a grid in winforms

c#

datagridview

winforms