How to change ListBox selection background color?

Question

It seems to use default color from Windows settings which is blue by default. Let\'s say I want to change it to red permanently. I\'m using Winforms.

Thanks in advan

Answer 1

The below code does exactly what you are saying:

In the InitializeComponent method:

this.listBox1.DrawMode = DrawMode.OwnerDrawFixed;
this.listBox1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(listBox1_DrawItem);
this.listBox1.SelectedIndexChanged += new System.EventHandler(listBox1_SelectedIndexChanged);

And the event handlers:

void listBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
    this.listBox1.Invalidate();
}

void listBox1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
    int index = e.Index;
    Graphics g = e.Graphics;
    foreach (int selectedIndex in this.listBox1.SelectedIndices)
    {
        if (index == selectedIndex)
        {
            // Draw the new background colour
            e.DrawBackground();
            g.FillRectangle(new SolidBrush(Color.Red), e.Bounds);
        }
    }

    // Get the item details
    Font font = listBox1.Font;
    Color colour = listBox1.ForeColor;
    string text = listBox1.Items[index].ToString();

    // Print the text
    g.DrawString(text, font, new SolidBrush(Color.Black), (float)e.Bounds.X, (float)e.Bounds.Y);
    e.DrawFocusRectangle();
}

Code is taken from:

http://www.weask.us/entry/change-listbox-rsquo-selected-item-backcolor-net