我想在标题单元格中以垂直方向显示文本。我该怎么做?
谢谢
您可以使用标题的自定义单元格绘制来实现所需的结果。
为了回答您要求将文本与单元格底部对齐的方法的评论,我在我的代码中添加了评论。他们希望是清楚的。
您需要以下代码(例如在初始化组件后的 Form_Load 中)
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);
接下来,您需要类似以下代码的内容:
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;
}
}
更简单有效的渲染器
通过设计器或使用这行代码附加事件
dataGridView1.CellPainting += new DataGridView1_CellPainting(dataGridView1_CellPainting);
绘制旋转文本的事件处理程序
private void DataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e) {
// Vertical text from column 0, or adjust below, if first column(s) to be skipped
if (e.RowIndex == -1 && e.ColumnIndex >= 0) {
e.PaintBackground(e.CellBounds, true);
e.Graphics.TranslateTransform(e.CellBounds.Left , e.CellBounds.Bottom);
e.Graphics.RotateTransform(270);
e.Graphics.DrawString(e.FormattedValue.ToString(),e.CellStyle.Font,Brushes.Black,5,5);
e.Graphics.ResetTransform();
e.Handled = true;
}
}
DataGrid d = new DataGrid();
d.Columns[0].HeaderStyle.VerticalAlign = VerticalAlign.Bottom;
如果您正在寻找gridview,那么您的情况是这样的:-
GridView gv = new GridView ();
gv.Columns[0].ItemStyle.VerticalAlign = VerticalAlign.Bottom;
如果您正在寻找 datagridview,那么您的情况如下:- 创建一个 datagridview 对象。
gv.Columns["ColumnName"].HeaderCell.Style.Alignment = DataGridViewContentAlignment.BottomCenter;
void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
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);
e.Graphics.DrawString(e.Value.ToString(), this.Font,
Brushes.Orange, new PointF(rect.Y, rect.X));
e.Graphics.RotateTransform(90.0F);
e.Graphics.TranslateTransform(0, -titleSize.Width);
e.Handled = true;
}
}
In addition, you could set the AutoSizeColumnsMode property of the
DataGridView to AllCellsExceptHeader in order to make the DataGridView
compact.