Cellborder datagridview

ankit goel 746

Hi ,

in my datagridview , i have turned off the cell border by using
this.CellBorderStyle = DataGridViewCellBorderStyle.None;

User's image

but still when its cell gets focused by using mouse , i can there there is a dashed line type border in the cell . To prevent this , i tried using

this.SelectionMode = DataGridViewSelectionMode.FullRowSelect , but no success . How to prevent this please suggest

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2023-10-25T07:06:07.0933333+00:00
Hi @ankit goel , Welcome to Microsoft Q&A,

First in my test in .Net Framework 4.8.1 I set this.CellBorderStyle = DataGridViewCellBorderStyle.None; and your problem did not occur.

Try creating a new project to see if it reproduces.

You can use a CellPainting event to redraw the selected cells so that no dashed lines appear.

gekka provides a simplified version of lambda.

The commonly used version is the following code:

private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e) { if (e.RowIndex >= 0 && e.ColumnIndex >= 0) { // Check if it is the focus cell if (dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected) { // If it is the focus cell, draw a custom background color without drawing a border e.Graphics.FillRectangle(Brushes.LightBlue, e.CellBounds); e.PaintContent(e.ClipBounds); e.Handled = true; // Prevent default drawing } else { // If it is not the focus cell, draw the default background color and border e.Paint(e.CellBounds, DataGridViewPaintParts.All); } } }

Best Regards,

Jiale

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ankit goel 746 Reputation points

2023-10-25T07:12:41.5833333+00:00

@Jiale Xue - MSFT , try clicking inside the datagridview using mouse and then presses tab key . may then you can see the dashed type border even if we used this.CellBorderStyle = DataGridViewCellBorderStyle.None;

Accepted answer

gekka 8,141 Reputation points MVP

2023-10-25T03:57:37.8566667+00:00
this.dataGridView1.CellPainting += (s, e) => { if (e.ColumnIndex == 1) { e.Paint(e.ClipBounds, e.PaintParts & ~DataGridViewPaintParts.Focus); e.Handled = true; } };
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ankit goel 746 Reputation points

2023-10-25T07:02:03.8333333+00:00

@gekka , i am looking for the all the columns in my datagridview . how to modify your suggestion .
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Cellborder datagridview

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