how to create a CheckBox on dataGridView Header Column C#?

Question

how to create a checkBox header in dataGridView , I have a dataGridView and i have a CheckBox Column index=12 and i need to do a checkBox on the header , this is my code but i have a error how can i do change this code to fix it , to create the checkBox header. any body can help???? i add some code to explain what i need to do.

DataGridViewCheckBoxCell checkBoxCell = new DataGridViewCheckBoxCell();
 //i have error here
dataGridViewSellers.Columns[12].HeaderCell = checkBoxCell;

foreach(Seller aSeller in sellers){
    DataGridViewButtonCell buttonEditCell = new DataGridViewButtonCell();
    DataGridViewButtonCell buttonDeleteCell = new DataGridViewButtonCell();
    DataGridViewButtonCell buttonRestPassCell = new DataGridViewButtonCell();
    dataGridViewSellers[0, i].Value = aSeller.IdNumber;
    dataGridViewSellers[1, i].Value = aSeller.Name;
    dataGridViewSellers[2, i].Value = aSeller.LastName;
    dataGridViewSellers[3, i].Value = aSeller.PhoneNumber;
    dataGridViewSellers[4, i].Value = aSeller.Address;
    dataGridViewSellers[5, i].Value = aSeller.Email;
    dataGridViewSellers[6, i].Value = aSeller.UserName;
    dataGridViewSellers[7, i].Value = aSeller.EntryDate;
    dataGridViewSellers[8, i].Value = aSeller.BusinessHours;
    dataGridViewSellers[9, i] = buttonEditCell;
    dataGridViewSellers[10, i] = buttonDeleteCell;
    dataGridViewSellers[11, i] = buttonRestPassCell;
}

Does this answer your question? How to have Checkbox as ColumnHeader of dataGridView — VietDD
– VietDD, Commented Oct 2, 2020 at 13:47
In future, if you have an issue involving an error message or exception, please post the error message as well so that we can help you out without needing to compile your code — Chris Schaller
– Chris Schaller, Commented Oct 2, 2020 at 22:21
See the notes and sample code here: How to replace the HeaderCells of a DataGridView with custom headers?. That code adds a Button to the Cell Header, but of course you can add any other control you like. — Jimi
– Jimi, Commented Oct 2, 2020 at 23:33

user11633312 · Accepted Answer · 2020-10-02 17:07:42Z

This is the fixed code..

    private void AddHeaderCheckBox()
    {
        HeaderCheckBox = new CheckBox();

        HeaderCheckBox.Size = new Size(15, 15);

        //Add the CheckBox into the DataGridView
        this.dataGridViewSellers.Controls.Add(HeaderCheckBox);
    }

    private void ResetLocation(int ColumnIndex, int RowIndex)
    {
        //Get the column header cell bounds
        Rectangle oRectangle =
          this.dataGridViewSellers.GetCellDisplayRectangle(ColumnIndex, RowIndex, true);

        Point oPoint = new Point();


        oPoint.X = oRectangle.Location.X + (oRectangle.Width - HeaderCheckBox.Width) / 2 + 1;
        oPoint.Y = oRectangle.Location.Y + (oRectangle.Height - HeaderCheckBox.Height) / 2 + 1;

        //Change the location of the CheckBox to make it stay on the header
        HeaderCheckBox.Location = oPoint;
    }

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