DataGridView中显示进度条（ProgressBar）

using System;
using System.Drawing;
using System.Windows.Forms;
public class DataGridViewProgressBarColumn : DataGridViewTextBoxColumn
{
public DataGridViewProgressBarColumn()
{
this.CellTemplate = new DataGridViewProgressBarCell();
}
public override DataGridViewCell CellTemplate
{
get
{
return base.CellTemplate;
}
set
{
if (!(value is DataGridViewProgressBarCell))
{
throw new InvalidCastException("DataGridViewProgressBarCellオブジェクトを" + "指定してください。");
}
base.CellTemplate = value;
}
}
/// <summary>
/// ProgressBarの最大値
/// </summary>
public int Maximum
{
get
{
return ((DataGridViewProgressBarCell)this.CellTemplate).Maximum;
}
set
{
if (this.Maximum == value)
return;
((DataGridViewProgressBarCell)this.CellTemplate).Maximum =value;

if (this.DataGridView == null)
return;
int rowCount = this.DataGridView.RowCount;
for (int i = 0; i < rowCount; i++)
{
DataGridViewRow r = this.DataGridView.Rows.SharedRow(i);
((DataGridViewProgressBarCell)r.Cells[this.Index]).Maximum = value;
}
}
}
/// <summary>
/// ProgressBarの最小値
/// </summary>
public int Mimimum
{
get
{
return ((DataGridViewProgressBarCell)this.CellTemplate).Mimimum;
}
set
{
if (this.Mimimum == value)
return;
((DataGridViewProgressBarCell)this.CellTemplate).Mimimum = value;
if (this.DataGridView == null)
return;
int rowCount = this.DataGridView.RowCount;
for (int i = 0; i < rowCount; i++)
{
DataGridViewRow r = this.DataGridView.Rows.SharedRow(i);
((DataGridViewProgressBarCell)r.Cells[this.Index]).Mimimum = value;
}
}
}
}
/// <summary>
/// ProgressBarをDataGridViewに表示する
/// </summary>
public class DataGridViewProgressBarCell : DataGridViewTextBoxCell
{
public DataGridViewProgressBarCell()
{
this.maximumValue = 100;
this.mimimumValue = 0;
}

private int maximumValue;
public int Maximum
{
get
{
return this.maximumValue;
}
set
{
this.maximumValue = value;
}
}

private int mimimumValue;
public int Mimimum
{
get
{
return this.mimimumValue;
}
set
{
this.mimimumValue = value;
}
}
public override Type ValueType
{
get
{
return typeof(int);
}
}
public override object DefaultNewRowValue
{
get
{
return 0;
}
}
public override object Clone()
{
DataGridViewProgressBarCell cell = (DataGridViewProgressBarCell)base.Clone();
cell.Maximum = this.Maximum;
cell.Mimimum = this.Mimimum;
return cell;
}

protected override void Paint(Graphics graphics,
Rectangle clipBounds, Rectangle cellBounds,
int rowIndex, DataGridViewElementStates cellState,
object value, object formattedValue, string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
int intValue = 0;
if (value is int)
intValue = (int)value;
if (intValue < this.mimimumValue)
intValue = this.mimimumValue;
if (intValue > this.maximumValue)
intValue = this.maximumValue;
double rate = (double)(intValue - this.mimimumValue) / (this.maximumValue - this.mimimumValue);
if ((paintParts & DataGridViewPaintParts.Border) == DataGridViewPaintParts.Border)
{
this.PaintBorder(graphics, clipBounds, cellBounds,
cellStyle, advancedBorderStyle);
}
Rectangle borderRect = this.BorderWidths(advancedBorderStyle);
Rectangle paintRect = new Rectangle(
cellBounds.Left + borderRect.Left,
cellBounds.Top + borderRect.Top,
cellBounds.Width - borderRect.Right,
cellBounds.Height - borderRect.Bottom);
bool isSelected = (cellState & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected;
Color bkColor;
if (isSelected && (paintParts & DataGridViewPaintParts.SelectionBackground) == DataGridViewPaintParts.SelectionBackground)
{
bkColor = cellStyle.SelectionBackColor;
}
else
{
bkColor = cellStyle.BackColor;
}
if ((paintParts & DataGridViewPaintParts.Background) == DataGridViewPaintParts.Background)
{
using (SolidBrush backBrush = new SolidBrush(bkColor))
{
graphics.FillRectangle(backBrush, paintRect);
}
}
paintRect.Offset(cellStyle.Padding.Right, cellStyle.Padding.Top);
paintRect.Width -= cellStyle.Padding.Horizontal;
paintRect.Height -= cellStyle.Padding.Vertical;
if ((paintParts & DataGridViewPaintParts.ContentForeground) == DataGridViewPaintParts.ContentForeground)
{
if (ProgressBarRenderer.IsSupported)
{
ProgressBarRenderer.DrawHorizontalBar(graphics, paintRect);
Rectangle barBounds = new Rectangle(
paintRect.Left + 3, paintRect.Top + 3,
paintRect.Width - 4, paintRect.Height - 6);
barBounds.Width = (int)Math.Round(barBounds.Width * rate);
ProgressBarRenderer.DrawHorizontalChunks(graphics, barBounds);
}
else
{
graphics.FillRectangle(Brushes.White, paintRect);
graphics.DrawRectangle(Pens.Black, paintRect);
Rectangle barBounds = new Rectangle(
paintRect.Left + 1, paintRect.Top + 1,
paintRect.Width - 1, paintRect.Height - 1);
barBounds.Width = (int)Math.Round(barBounds.Width * rate);
graphics.FillRectangle(Brushes.Blue, barBounds);
}
}
if (this.DataGridView.CurrentCellAddress.X == this.ColumnIndex &&
this.DataGridView.CurrentCellAddress.Y == this.RowIndex &&
(paintParts & DataGridViewPaintParts.Focus) ==
DataGridViewPaintParts.Focus &&
this.DataGridView.Focused)
{

Rectangle focusRect = paintRect;
focusRect.Inflate(-3, -3);
ControlPaint.DrawFocusRectangle(graphics, focusRect);
}
if ((paintParts & DataGridViewPaintParts.ContentForeground) == DataGridViewPaintParts.ContentForeground)
{

string txt = string.Format("{0}%", Math.Round(rate * 100));

TextFormatFlags flags = TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter;
Color fColor = cellStyle.ForeColor;
paintRect.Inflate(-2, -2);
TextRenderer.DrawText(graphics, txt, cellStyle.Font,
paintRect, fColor, flags);
}
if ((paintParts & DataGridViewPaintParts.ErrorIcon) ==
DataGridViewPaintParts.ErrorIcon &&
this.DataGridView.ShowCellErrors &&
!string.IsNullOrEmpty(errorText))
{
Rectangle iconBounds = this.GetErrorIconBounds(
graphics, cellStyle, rowIndex);
iconBounds.Offset(cellBounds.X, cellBounds.Y);
this.PaintErrorIcon(graphics, iconBounds, cellBounds, errorText);
}
}
}

//用法

DataGridViewProgressBarColumn pbColumn = new DataGridViewProgressBarColumn();
pbColumn.DataPropertyName = "Column1";
DataGridView1.Columns.Add(pbColumn);