/// <summary>
/// stretch the columns width to always fit the available space when the contents of the cell is smaller.
/// </summary>
public virtual void StretchToFit()
{
SuspendLayout();
Rectangle displayRect = Grid.DisplayRectangle;
int?firstVisible = Grid.GetFirstVisibleScrollableColumn();
if (Count > 0 && displayRect.Width > 0)
{
List <int> visibleIndex = ColumnsInsideRegion(firstVisible, displayRect.X, displayRect.Width);
//Continue only if the columns are all visible, otherwise this method cannot shirnk the columns
if (visibleIndex.Count >= Count)
{
int?current = GetRight(firstVisible, Count - 1);
if (current != null && displayRect.Width > current.Value)
{
//Calculate the columns to stretch
int countToStretch = 0;
for (int i = 0; i < Count; i++)
{
if ((GetAutoSizeMode(i) & AutoSizeMode.EnableStretch) == AutoSizeMode.EnableStretch)
{
countToStretch++;
}
}
int deltaPerColumn = (displayRect.Width - current.Value) / countToStretch;
for (int i = 0; i < Count; i++)
{
if ((GetAutoSizeMode(i) & AutoSizeMode.EnableStretch) == AutoSizeMode.EnableStretch)
{
SetWidth(i, GetWidth(i) + deltaPerColumn);
}
}
}
}
}
ResumeLayout();
}
