contrôle Progressbar dans Datagrid en C#

Question

comment créer une colonne de barre de progression dans le contrôle DataGrid dans C#

Answer 1

mon code, trouvé à msdn forum thread

//--------------------------------------------------------------------- 
//THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY 
//KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A 
//PARTICULAR PURPOSE. 
//--------------------------------------------------------------------- 
using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Windows.Forms; 
using System.Drawing; 
using System.ComponentModel; 
namespace Sample 
{ 
    public class DataGridViewProgressColumn : DataGridViewImageColumn 
    { 
     public DataGridViewProgressColumn() 
     { 
      CellTemplate = new DataGridViewProgressCell(); 
     } 
    } 
} 
namespace Sample 
{ 
    class DataGridViewProgressCell : DataGridViewImageCell 
    { 
     // Used to make custom cell consistent with a DataGridViewImageCell 
     static Image emptyImage; 
     static DataGridViewProgressCell() 
     { 
      emptyImage = new Bitmap(1, 1, System.Drawing.Imaging.PixelFormat.Format32bppArgb); 
     } 
     public DataGridViewProgressCell() 
     { 
      this.ValueType = typeof(int); 
     } 
     // Method required to make the Progress Cell consistent with the default Image Cell. 
     // The default Image Cell assumes an Image as a value, although the value of the Progress Cell is an int. 
     protected override object GetFormattedValue(object value, 
          int rowIndex, ref DataGridViewCellStyle cellStyle, 
          TypeConverter valueTypeConverter, 
          TypeConverter formattedValueTypeConverter, 
          DataGridViewDataErrorContexts context) 
     { 
      return emptyImage; 
     } 

     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) 
     { 
      int progressVal = (int)value; 
      float percentage = ((float)progressVal/100.0f); // Need to convert to float before division; otherwise C# returns int which is 0 for anything but 100%. 
      Brush backColorBrush = new SolidBrush(cellStyle.BackColor); 
      Brush foreColorBrush = new SolidBrush(cellStyle.ForeColor); 
      // Draws the cell grid 
      base.Paint(g, clipBounds, cellBounds, 
      rowIndex, cellState, value, formattedValue, errorText, 
      cellStyle, advancedBorderStyle, (paintParts & ~DataGridViewPaintParts.ContentForeground)); 
      if (percentage > 0.0) 
      { 
       // Draw the progress bar and the text 
       g.FillRectangle(new SolidBrush(Color.FromArgb(163, 189, 242)), cellBounds.X + 2, cellBounds.Y + 2, Convert.ToInt32((percentage * cellBounds.Width - 4)), cellBounds.Height - 4); 
       g.DrawString(progressVal.ToString() + "%", cellStyle.Font, foreColorBrush, cellBounds.X + 6, cellBounds.Y + 2); 
      } 
      else 
      { 
       // draw the text 
       if (this.DataGridView.CurrentRow.Index == rowIndex) 
        g.DrawString(progressVal.ToString() + "%", cellStyle.Font, new SolidBrush(cellStyle.SelectionForeColor), cellBounds.X + 6, cellBounds.Y + 2); 
       else 
        g.DrawString(progressVal.ToString() + "%", cellStyle.Font, foreColorBrush, cellBounds.X + 6, cellBounds.Y + 2); 
      } 
     } 
    } 
}