// ========================================================================
// Methods
#region === Methods
/// <returns>
/// An <see cref="T:System.Object"/> that represents the cloned <see cref="T:System.Windows.Forms.DataGridViewBand"/>.
/// </returns>
public override object Clone()
{
DataGridViewImageComboBoxColumn clone = base.Clone() as DataGridViewImageComboBoxColumn;
if (clone != null)
{
clone.ImageList = ImageList;
clone.ImageSize = ImageSize;
clone.Items = new List <ImageComboBoxItem>(Items);
}
return(clone);
}
/// <summary>
/// Attaches and initializes the hosted editing control.
/// </summary>
/// <param name = "rowIndex">The index of the cell's parent row.</param>
/// <param name = "initialFormattedValue">The initial value to be displayed in the control.</param>
/// <param name = "dataGridViewCellStyle">A <see cref = "T:System.Windows.Forms.DataGridViewCellStyle" /> that determines the appearance of the hosted control.</param>
public override void InitializeEditingControl(int rowIndex, object initialFormattedValue,
DataGridViewCellStyle dataGridViewCellStyle)
{
base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
DataGridViewImageComboBoxEditingControl control =
DataGridView.EditingControl as DataGridViewImageComboBoxEditingControl;
DataGridViewImageComboBoxColumn column = OwningColumn as DataGridViewImageComboBoxColumn;
if (control != null && column != null)
{
control.ImageList = column.ImageList;
control.ImageSize = column.ImageSize;
control.ItemHeight = column.ImageSize.Height + 2;
control.Items.Clear();
control.Items.AddRange(column.Items.ToArray());
control.SelectedItem = Value as ImageComboBoxItem;
}
}
/// <summary>
/// Paints the current <see cref = "DataGridViewImageComboBoxColumnCell" />.
/// </summary>
/// <param name = "graphics">The <see cref = "T:System.Drawing.Graphics" /> used to paint the cell.</param>
/// <param name = "clipBounds">A <see cref = "T:System.Drawing.Rectangle" /> that represents the area of the <see cref = "T:System.Windows.Forms.DataGridView" /> that needs to be repainted.</param>
/// <param name = "cellBounds">A <see cref = "T:System.Drawing.Rectangle" /> that contains the bounds of the cell that is being painted.</param>
/// <param name = "rowIndex">The row index of the cell that is being painted.</param>
/// <param name = "elementState">A bitwise combination of <see cref = "T:System.Windows.Forms.DataGridViewElementStates" /> values that specifies the state of the cell.</param>
/// <param name = "value">The data of the cell that is being painted.</param>
/// <param name = "formattedValue">The formatted data of the cell that is being painted.</param>
/// <param name = "errorText">An error message that is associated with the cell.</param>
/// <param name = "cellStyle">A <see cref = "T:System.Windows.Forms.DataGridViewCellStyle" /> that contains formatting and style information about the cell.</param>
/// <param name = "advancedBorderStyle">A <see cref = "T:System.Windows.Forms.DataGridViewAdvancedBorderStyle" /> that contains border styles for the cell that is being painted.</param>
/// <param name = "paintParts">A bitwise combination of the <see cref = "T:System.Windows.Forms.DataGridViewPaintParts" /> values that specifies which parts of the cell need to be painted.</param>
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)
{
//Call the base to draw the combo box itself.
base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, null,
errorText, cellStyle, advancedBorderStyle, paintParts);
//Now we will draw the current content of the box.
DataGridViewImageComboBoxColumn column = ((DataGridViewImageComboBoxColumn)OwningColumn);
if ((paintParts & DataGridViewPaintParts.Background) != 0 || (paintParts & DataGridViewPaintParts.All) != 0)
{
Rectangle rect = new Rectangle(cellBounds.X + 4, cellBounds.Y, cellBounds.Width - 4, cellBounds.Height - 1);
ControlDrawHelper.DrawImageComboBoxItem(graphics, value, column.ImageList, column.ImageSize, rect, cellStyle.Font, cellStyle.ForeColor);
}
}