Textbox's color within datagridview

Question

Hi , I am trying to set the backcolor of textbox within the datagridview to red but i found out that the color is not filling in the textbox properly . it is leaving some space from all the four sides . I have tried setting borderstyle to none and also tried padding , but none of them worked. Can you please suggest .

        private void customControl11_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            e.Control.KeyPress -= new KeyPressEventHandler(textbox_keypress);
            e.Control.TextChanged -= new EventHandler(TextBox_TextChanged);
            e.Control.KeyDown -= new KeyEventHandler(TextBox_KeyDown);
            e.Control.Enter -= new EventHandler(TextBox_Enter);
            if (customControl11.CurrentCell.ColumnIndex == 1 || customControl11.CurrentCell.ColumnIndex == 2) // Assuming the first column has an index of 0
            {
                TextBox textBox = e.Control as TextBox;
                if (textBox != null)
                {
                    textBox.KeyPress += new KeyPressEventHandler(textbox_keypress);
                }
            }

            else if (customControl11.CurrentCell.ColumnIndex == 0) // Assuming the first column has an index of 0
            {
                TextBox textBox = e.Control as TextBox;
                if (textBox != null)
                {
                    textBox.TextChanged += TextBox_TextChanged; // Attach TextChanged event handler
                    textBox.KeyDown += TextBox_KeyDown; // Attach KeyDown event handler
                    textBox.Enter += TextBox_Enter;
                }
            }
        }
        private void TextBox_Enter(object sender, EventArgs e)
        {
            TextBox textBox = sender as TextBox;
            textBox.BackColor = Color.Red;
            textBox.BorderStyle = BorderStyle.None;
            // Set padding and margin to zero
            textBox.Margin = new Padding(0);
            textBox.Padding = new Padding(0);
            if (customControl11.CurrentCell.ColumnIndex > 0)
                return;

            dataGridView1.Visible = true;
            dataGridView1.Columns["id"].Visible = false;
            dataGridView1.Columns["current_balance"].Visible = false;
            dataGridView1.Columns["opening_balance"].Visible = false;
            dataGridView1.CurrentCell = dataGridView1.Rows[0].Cells[1];
        }

here is the output

you can see that the red color is not filling properly .

Answer 1

Hi @OmkarHcl , Welcome to Microsoft Q&A.

Updated:

Just add the dataGridView1_CellFormatting event:

private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
{
    if (dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected)
    {
        e.CellStyle.BackColor = Color.Red;
    }
    else
    {
        e.CellStyle.BackColor = dataGridView1.DefaultCellStyle.BackColor;
    }
}

---

Note the RowsDefaultCellStyle.BackColor property.

You just need to use the code:

 private void Form1_Load(object sender, EventArgs e)
{
    dataGridView1.RowsDefaultCellStyle.BackColor = Color.Red;
}

Best Regards,

Jiale

---

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Answer 2

Hi ,

I suggest these changes to your code to get everything filled in:

private void customControl11_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    //Your code...

    else if (customControl11.CurrentCell.ColumnIndex == 0)
    {
        TextBox textBox = e.Control as TextBox;
        if (textBox != null)
        {
            textBox.TextChanged += TextBox_TextChanged;
            textBox.KeyDown += TextBox_KeyDown;
            textBox.Enter += TextBox_Enter;

            // Set the cell style to remove padding and margin
            dataGridView1.DefaultCellStyle.Padding = new Padding(0);
            dataGridView1.DefaultCellStyle.Margin = new Padding(0);
        }
    }
}

private void TextBox_Enter(object sender, EventArgs e)
{
    TextBox textBox = sender as TextBox;
    textBox.BackColor = Color.Red;
    textBox.BorderStyle = BorderStyle.None;
}

Regards,