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前段时间需要完成列表(datagridview)添加进度条,实现进度的实时显示,在网上查阅资料,得到下面的资料并成功应用
public class DataGridViewProgressBarCell : DataGridViewCell { public DataGridViewProgressBarCell() { this.ValueType = typeof(int); } //设置进度条的背景色; public DataGridViewProgressBarCell(Color progressBarColor) : base() { ProgressBarColor = progressBarColor; } protected Color ProgressBarColor = Color.Green; //进度条的默认背景颜色,绿色; 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) { using (SolidBrush backBrush = new SolidBrush(cellStyle.BackColor)) { graphics.FillRectangle(backBrush, cellBounds); } base.PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle); using (SolidBrush brush = new SolidBrush(ProgressBarColor)) { if (value == null) value = 0; int num = (int)value; float percent = num / 100F; graphics.FillRectangle(brush, cellBounds.X, cellBounds.Y + 1, cellBounds.Width * percent, cellBounds.Height - 3); string text = string.Format("{0}%", num); SizeF rf = graphics.MeasureString(text, cellStyle.Font); float x = cellBounds.X + (cellBounds.Width - rf.Width) / 2f; float y = cellBounds.Y + (cellBounds.Height - rf.Height) / 2f; graphics.DrawString(text, cellStyle.Font, new SolidBrush(cellStyle.ForeColor), x, y); } } } public class DataGridViewProgressBarColumn : DataGridViewColumn { public DataGridViewProgressBarColumn() : base(new DataGridViewProgressBarCell()) { CellTemplate = new DataGridViewProgressBarCell(); } }