效果
源码如下
此代码为转载
//定义进度条列
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" + "指定。");
}
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 DataGridView表示
/// </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);
}
}
}效果
代码如下
public class WDataGridViewColumn_Progress : DataGridViewImageColumn
{
public WDataGridViewColumn_Progress()
{
this.CellTemplate = new WDataGridViewCell_Progress();
this.HeaderText = "Operate";
}
}
public class WDataGridViewCell_Progress : DataGridViewImageCell
{
// Used to make custom cell consistent with a DataGridViewImageCell 用于使自定义单元格与DataGridViewImageCell保持一致
static Image emptyImage;
static WDataGridViewCell_Progress()
{
emptyImage = new Bitmap(1, 1, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
}
public WDataGridViewCell_Progress()
{
this.ValueType = typeof(int);
}
// Method required to make the Progress Cell consistent with the default Image Cell. 方法，以使进度单元格与默认图像单元格保持一致。
// The default Image Cell assumes an Image as a value, although the value of the Progress Cell is an int. 默认的图像单元格假设图像是一个值，尽管Progress单元格的值是int。
protected override object GetFormattedValue(object value,
int rowIndex, ref DataGridViewCellStyle cellStyle,
TypeConverter valueTypeConverter,
TypeConverter formattedValueTypeConverter,
DataGridViewDataErrorContexts context)
{
return emptyImage;
}
/// <summary>
/// 对单元格的重绘事件进行的方法重写。
/// </summary>
protected override void Paint(System.Drawing.Graphics g, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
float progressVal;
if (value != null)
progressVal = Convert.ToSingle(value);
else
progressVal = 10;
float percentage = ((float)progressVal / 100.0f); // Need to convert to float before division; otherwise C# returns int which is 0 for anything but 100%. 除法前需要转换为浮点数;否则，c#将返回int值，该值对于除100%以外的任何值都为0。
Brush backColorBrush = new SolidBrush(cellStyle.BackColor);
Brush foreColorBrush = new SolidBrush(cellStyle.ForeColor);
// Draws the cell grid 绘制单元格
base.Paint(g, clipBounds, cellBounds,
rowIndex, cellState, value, formattedValue, errorText,
cellStyle, advancedBorderStyle, (paintParts & ~DataGridViewPaintParts.ContentForeground));
StringFormat StringFormat = new StringFormat() { LineAlignment = StringAlignment.Center, Alignment = StringAlignment.Center };
RectangleF Rectangle = new RectangleF(cellBounds.X, cellBounds.Y, cellBounds.Width, cellBounds.Height);
if (percentage >= 0.0)
{
// Draw the progress bar and the text 绘制进度条和文本
g.FillRectangle(new SolidBrush(Color.FromArgb(255, 189, 242)), cellBounds.X + 2, cellBounds.Y + 2, Convert.ToInt32((percentage * cellBounds.Width - 4)), cellBounds.Height - 4);
g.DrawString(progressVal.ToString() + "%", cellStyle.Font, foreColorBrush, Rectangle, StringFormat);
}
else
{
// draw the text 绘制文本
if (this.DataGridView.CurrentRow.Index == rowIndex)
g.DrawString(progressVal.ToString("#0.0") + "%", cellStyle.Font, new SolidBrush(cellStyle.SelectionForeColor), Rectangle, StringFormat);
else
g.DrawString(progressVal.ToString("#0.0") + "%", cellStyle.Font, foreColorBrush, Rectangle, StringFormat);
}
}
}