You can achieve the result you want using custom cell painting for the header.
In answer to your comment asking for a way to align the text with the bottom of the cell, I've added comments to my code. They are hopefully clear.
You need the following code (say in the Form_Load after initializing components)
dataGridView1.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
dataGridView1.ColumnHeadersHeight = 50;
dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader;
// Here we attach an event handler to the cell painting event
dataGridView1.CellPainting += new DataGridViewCellPaintingEventHandler(dataGridView1_CellPainting);
Next you need something like the following code:
void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
// check that we are in a header cell!
if (e.RowIndex == -1 && e.ColumnIndex >= 0)
{
e.PaintBackground(e.ClipBounds, true);
Rectangle rect = this.dataGridView1.GetColumnDisplayRectangle(e.ColumnIndex, true);
Size titleSize = TextRenderer.MeasureText(e.Value.ToString(), e.CellStyle.Font);
if (this.dataGridView1.ColumnHeadersHeight < titleSize.Width)
{
this.dataGridView1.ColumnHeadersHeight = titleSize.Width;
}
e.Graphics.TranslateTransform(0, titleSize.Width);
e.Graphics.RotateTransform(-90.0F);
// This is the key line for bottom alignment - we adjust the PointF based on the
// ColumnHeadersHeight minus the current text width. ColumnHeadersHeight is the
// maximum of all the columns since we paint cells twice - though this fact
// may not be true in all usages!
e.Graphics.DrawString(e.Value.ToString(), this.Font, Brushes.Black, new PointF(rect.Y - (dataGridView1.ColumnHeadersHeight - titleSize.Width) , rect.X));
// The old line for comparison
//e.Graphics.DrawString(e.Value.ToString(), this.Font, Brushes.Black, new PointF(rect.Y, rect.X));
e.Graphics.RotateTransform(90.0F);
e.Graphics.TranslateTransform(0, -titleSize.Width);
e.Handled = true;
}
}
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…