private void FillComboItems(ComboBoxEx comboBox, IEnumerable <ComboItem> items)
{
//保持原有选项
var oldSelection = comboBox.SelectedItem as ComboItem;
int?newSelection = null;
comboBox.BeginUpdate();
comboBox.Items.Clear();
foreach (var item in items)
{
comboBox.Items.Add(item);
if (newSelection == null && oldSelection != null)
{
if (item.Text == oldSelection.Text)
{
newSelection = comboBox.Items.Count - 1;
}
}
}
//恢复原有选项
if (comboBox.Items.Count > 0)
{
comboBox.SelectedIndex = newSelection ?? 0;
}
comboBox.EndUpdate();
}
/// <inheritdoc/>
public override void UpdateContent()
{
cbxObjects.BeginUpdate();
try
{
cbxObjects.Items.Clear();
if (Designer.ActiveReport != null)
{
Report report = Designer.ActiveReport.Report;
SortedList <string, Base> sl = new SortedList <string, Base>();
sl.Add("", report);
foreach (Base c in report.AllObjects)
{
if (!sl.ContainsKey(c.Name))
{
sl.Add(c.Name, c);
}
}
foreach (Base c in sl.Values)
{
cbxObjects.Items.Add(c);
}
}
SelectionChanged();
}
finally
{
cbxObjects.EndUpdate();
}
}