Question

如何重绘DATAGRIDVIEW单元格中包含的TEXTBOX控件

先获取单元格中的TEXTBOX,然后对其进行重绘
how?

Answer 1

这个是重绘的Button控件，TextBox的可以仿照这个写下
/// <summary>
/// 可禁用的按钮单元格列
/// </summary>
public class DataGridViewDisableButtonColumn : DataGridViewButtonColumn
{
public DataGridViewDisableButtonColumn()
{
this.CellTemplate = new DataGridViewDisableButtonCell();
}
}
/// <summary>
/// 可禁用的按钮单元格
/// </summary>
public class DataGridViewDisableButtonCell : DataGridViewButtonCell
{
private bool enabledValue;
public bool Enabled
{
get
{
return enabledValue;
}
set
{
enabledValue = value;
if (enabledValue)
{
this.Style.ForeColor = Color.FromKnownColor(KnownColor.ControlText);
}
else
{
this.Style.ForeColor = Color.Gray;
}
}
}

// Override the Clone method so that the Enabled property is copied.
public override object Clone()
{
DataGridViewDisableButtonCell cell =
(DataGridViewDisableButtonCell)base.Clone();
cell.Enabled = this.Enabled;
return cell;
}

// By default, enable the button cell.
public DataGridViewDisableButtonCell()
{
this.enabledValue = true;
}

protected override void Paint(Graphics graphics,
Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
DataGridViewElementStates elementState, object value,
object formattedValue, string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
// The button cell is disabled, so paint the border,
// background, and disabled button for the cell.
if (!this.enabledValue)
{
// Draw the cell background, if specified.
if ((paintParts & DataGridViewPaintParts.Background) ==
DataGridViewPaintParts.Background)
{
SolidBrush cellBackground =
new SolidBrush(cellStyle.BackColor);
graphics.FillRectangle(cellBackground, cellBounds);
cellBackground.Dispose();
}

// Draw the cell borders, if specified.
if ((paintParts & DataGridViewPaintParts.Border) ==
DataGridViewPaintParts.Border)
{
PaintBorder(graphics, clipBounds, cellBounds, cellStyle,
advancedBorderStyle);
}

// Calculate the area in which to draw the button.
Rectangle buttonArea = cellBounds;
Rectangle buttonAdjustment =
this.BorderWidths(advancedBorderStyle);
buttonArea.X += buttonAdjustment.X;
buttonArea.Y += buttonAdjustment.Y;
buttonArea.Height -= buttonAdjustment.Height;
buttonArea.Width -= buttonAdjustment.Width;

// Draw the disabled button.
ButtonRenderer.DrawButton(graphics, buttonArea,
PushButtonState.Disabled);

// Draw the disabled button text.
if (this.FormattedValue is String)
{
TextRenderer.DrawText(graphics,
(string)this.FormattedValue,
this.DataGridView.Font,
buttonArea, SystemColors.GrayText);
}
}
else
{
// The button cell is enabled, so let the base class
// handle the painting.
base.Paint(graphics, clipBounds, cellBounds, rowIndex,
elementState, value, formattedValue, errorText,
cellStyle, advancedBorderStyle, paintParts);
}
}
}

追问

如何将重绘好的TEXTBOXCOLUMN应用于我的DATAGRIDVIEW中的某一列?

追答

DataGridViewDisableButtonColumn col = new DataGridViewDisableButtonColumn();
col.Name = "del";
col.Text = "删除";
col.UseColumnTextForButtonValue = true;
col.DefaultCellStyle.NullValue = "删除";
col.DefaultCellStyle.BackColor = Color.FromKnownColor(KnownColor.Control);
col.HeaderText = "";
dgv.Columns.Add(col);