change cells' forecolor on selectionchanged

Question

Hi ,

i have a datagridview which is load of some data . how do i change all the cells forecolor within a row when a row is selected and revert it back when it is unselected .

Answer 1

using System;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;

public partial class MainForm : Form
{
    public MainForm()
    {
        DataTable table = new DataTable();
        table.Columns.Add("Column1");
        table.Columns.Add("Column2");
        table.Columns.Add("Column3");
        Random rnd = new Random();
        for (int i = 0; i < 10; i++)
        {
            table.Rows.Add(Enumerable.Range(1, table.Columns.Count).Select(_ => rnd.NextDouble().ToString()).ToArray());
        }

        DataGridView dgv = new DataGridView();
        dgv.DataSource = table;
        dgv.Dock = DockStyle.Fill;
        this.Controls.Add(dgv);


        dgv.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
        dgv.DefaultCellStyle.ForeColor = Color.Black;
        dgv.DefaultCellStyle.BackColor = Color.White;
        dgv.DefaultCellStyle.SelectionBackColor = Color.LightYellow; //dgv.DefaultCellStyle.BackColor
        dgv.DefaultCellStyle.SelectionForeColor = Color.Green;

        dgv.CellPainting += Dgv_CellPainting;
    }

    private void Dgv_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
    {
        DataGridView dgv = (DataGridView)sender;

        if ((e.State & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected)
        {
            if (e.ColumnIndex == dgv.CurrentCell.ColumnIndex && !dgv.IsCurrentCellInEditMode)
            {
                e.Graphics.FillRectangle(Brushes.LightPink, e.CellBounds);
                e.Paint(e.CellBounds, e.PaintParts & ~DataGridViewPaintParts.Background);
                e.Handled = true;
            }
        }
    }
}

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[2023-12-23T22:00Z+09:00] remove unnecessary code