How C # Displays strings and icons in the DataGridView Rowheader

"Data collection from the network"

In the DataGridView cellpainting event, add the following code

private void Datagridview1_cellpainting (object sender, DataGridViewCellPaintingEventArgs e)

{

if (e.rowindex >= 0 && E.columnindex = = 1)

{

Rectangle newrect = new Rectangle (e.cellbounds.x, E.cellbounds.y, E.cellbounds.height, e.cellbounds.height);

Create a new icon

System.Drawing.Icon ico = new Icon ("F://xx.ico");

using (Brush Gridbrush = new SolidBrush (This.dataGridView1.GridColor),

BackColorBrush = new SolidBrush (E.cellstyle.backcolor))

{

using (pen Gridlinepen = new Pen (gridbrush,2))

{

Erase the cell.

E.graphics.fillrectangle (BackColorBrush, e.cellbounds);

Crossed

Point P1 = new Point (E.cellbounds.left+e.cellbounds.width, e.cellbounds.top);

Point P2 = new Point (E.cellbounds.left+e.cellbounds.width, e.cellbounds.top+e.cellbounds.height);

Point p3 = new Point (e.cellbounds.left,e.cellbounds.top+ e.cellbounds.height);

Point[] ps = new POINT[]{P1,P2,P3};

E.graphics.drawlines (GRIDLINEPEN,PS);

Draw icon

E.graphics.drawicon (ico, newrect);

Draw a String

E.graphics.drawstring ("123", E.cellstyle.font, Brushes.crimson, E.cellbounds.left +, E.cellbounds.top, Stringformat.genericdefault);

E.handled = true;

}

}

}

}

Exceptions have other methods for reference, also in the DataGridView cellpainting event

"A" is displayed on the 1 (ie rowheader) column

if (e.rowindex >= 0 && e.columnindex = 0)

{

E.graphics.drawstring ("A", This.dataGridView1.Font, brushes.red, E.cellbounds.top + 5);

}

"A" is covered by the 1 (ie rowheader) column.

if (e.rowindex >= 0 && E.columnindex = = 1)

{

E.graphics.drawstring ("A", This.dataGridView1.Font, brushes.red, E.cellbounds.top + 5);

}

XX picture on-1 (ie rowheader) column

if (e.rowindex >= 0 && e.columnindex = 0)

{

Image img = image.fromfile (@ "f:/xx.bmp");

E.graphics.drawimage (IMG, 0, e.cellbounds.top);

}

XX picture is covered by-1 (ie rowheader) column

if (e.rowindex >= 0 && E.columnindex = = 1)

{

Image img = image.fromfile (@ "f:/xx.bmp");

E.graphics.drawimage (IMG, 0, e.cellbounds.top);

}

XX picture is covered by-1 (ie rowheader) column

if (e.rowindex >= 0 && E.columnindex = = 1)

{

Image img = image.fromfile (@ "f:/xx.bmp");

E.graphics.drawimage (IMG, e.cellbounds.left, e.cellbounds.top);

}

XX picture is covered by 0 columns

if (e.rowindex >= 0 && e.columnindex = 0)

{

Image img = image.fromfile (@ "f:/xx.bmp");

E.graphics.drawimage (IMG, e.cellbounds.left, e.cellbounds.top);

}