How do you highlight the row and/or column labels of a datagridview on mouseover of any cell (in c#)?

You could override the OnCellPainting event to do what you want. Depending on the size of your DataGridView you might see flickering, but this should do what you want.

You could override the OnCellPainting event to do what you want. Depending on the size of your DataGridView, you might see flickering, but this should do what you want. Class MyDataGridView : DataGridView { private int mMousedOverColumnIndex = int.

MinValue; private int mMousedOverRowIndex = int. MinValue; protected override void OnCellMouseEnter(DataGridViewCellEventArgs e) { mMousedOverColumnIndex = e. ColumnIndex; mMousedOverRowIndex = e.

RowIndex; base. OnCellMouseEnter(e); base.Refresh(); } protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e) { if (((e. ColumnIndex == mMousedOverColumnIndex) && (e.

RowIndex == -1)) || ((e. ColumnIndex == -1) && (e. RowIndex == mMousedOverRowIndex))) { PaintColumnHeader(e, System.Drawing.Color.

Red); } base. OnCellPainting(e); } private void PaintColumnHeader(System.Windows.Forms. DataGridViewCellPaintingEventArgs e, System.Drawing.

Color color) { LinearGradientBrush backBrush = new LinearGradientBrush(new System.Drawing. Point(0, 0), new System.Drawing. Point(100, 100), color, color); e.Graphics.

FillRectangle(backBrush, e. CellBounds); DataGridViewPaintParts parts = (DataGridViewPaintParts. All & ~DataGridViewPaintParts.

Background); e. AdvancedBorderStyle. Right = DataGridViewAdvancedCellBorderStyle.

None; e. AdvancedBorderStyle. Left = DataGridViewAdvancedCellBorderStyle.

None; e. Paint(e. ClipBounds, parts); e.

Handled = true; } }.

You can hook into the DataGridView's CellMouseEnter and CellMouseLeave events and then change the backcolor accordingly. Something like this: private void dataGridView1_CellMouseEnter(object sender, DataGridViewCellEventArgs e) { if (e. RowIndex ColumnIndex LightBlue; } private void dataGridView1_CellMouseLeave(object sender, DataGridViewCellEventArgs e) { if (e.

RowIndex DataGridView1.Rowse.RowIndex.Cellse.ColumnIndex.Style. BackColor = Color. White; }.

I want to change the row label (the fixed column to the left) just like it changes when you move the mouse over it. – Stuart Helwig Jun 3 '09 at 11:35 Oh, my bad, I thought you meant you wanted that to happen for the cells themselves. Let me mess around a bit more... – BFree Jun 3 '09 at 11:38.

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