Unable to hide the border of header

Question

Hi , What should i had to add or modify my existing code in order to completely hide the borders of columnheaders . i have tried setting it to none but still a border is present between headers

  public partial class betterdatagridview : DataGridView
    {
        public betterdatagridview()
        {
            InitializeComponent();
            this.AllowUserToAddRows = false;
            this.AllowUserToResizeColumns = false;
            this.BorderStyle = BorderStyle.None;
            this.RowHeadersBorderStyle = DataGridViewHeaderBorderStyle.None;
            this.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.None;
            this.CellBorderStyle = DataGridViewCellBorderStyle.None;
        }

Answer 1

Hi @rahul kumar , Welcome to Microsoft Q&A.

It's not a bezel, it's the gap left after the bezel was removed.

You can use a brush to fill in.

protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
{
    if (e.RowIndex == -1 && e.ColumnIndex > -1)
    {
        e.Handled = true;
        using (Brush b = new SolidBrush(this.DefaultCellStyle.BackColor))
        {
            e.Graphics.FillRectangle(b, e.CellBounds);
        }
        e.PaintContent(e.ClipBounds);
    }
}

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Best Regards,

Jiale

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Answer 2

/Good morning, have you tried adding this to your code?

public partial class betterdatagridview : DataGridView

{

public betterdatagridview()

{

    InitializeComponent();

    this.AllowUserToAddRows = false;

    this.AllowUserToResizeColumns = false;

    this.BorderStyle = BorderStyle.None;

    this.RowHeadersBorderStyle = DataGridViewHeaderBorderStyle.None;

    this.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.None;

    this.CellBorderStyle = DataGridViewCellBorderStyle.None;


    

    // Add the following line to hide borders of column header cells

    this.ColumnHeadersDefaultCellStyle.BorderSides = DataGridViewHeaderBorderStyle.None;

}

}

Try setting the ColumnHeadersDefaultCellStyle.BorderSides property to DataGridViewHeaderBorderStyle.None, you should be able to completely hide the borders of the column header cells. Hope this helps!

-JayB