private void ColumnResizerThumb_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
ColumnBase parentColumn = this.ParentColumn;
if (parentColumn == null)
{
return;
}
e.Handled = true;
double fittedWidth = parentColumn.GetFittedWidth();
if (fittedWidth != -1)
{
parentColumn.Width = fittedWidth;
}
}
double?BetterFittedWidth(ColumnBase cb)
{
List <object> sampleValues = ((GridVm)cb.DataGridControl.DataContext).Data.Cast <object>()
.Select(r => GetField(r, cb))
.Where(v => v != null)
.Take(5)
.ToList();
sampleValues.Add(cb.Title);
double w = cb.GetFittedWidth();
if (sampleValues.Any())
{
double wcalc = 2 + 7 * sampleValues.Max(v => Convert.ToString(v).Length);
w = Math.Max(wcalc, w);
}
if (w > 0)
{
return(w);
}
return(null);
}
