小编Gin*_*Gin的帖子

我有一个小问题ComboBoxEdit（DevExpress.XtraEditors）。我无法为SelectedIndex我的ComboBoxExit.

 ComboBoxEdit combo = new ComboBoxEdit();
 ComboBoxItemCollection coll = combo.Properties.Items;

 coll.BeginUpdate();

 try 
 {
    coll.Add(new PersonInfo("Sven", "Petersen"));
    coll.Add(new PersonInfo("Cheryl", "Saylor"));
    coll.Add(new PersonInfo("Dirk", "Luchte"));
 }
 finally 
 {
    coll.EndUpdate();
 }

 combo.SelectedIndex = -1; Comboboxedit1.Properties.Items.Add(combo);

它不起作用，只是添加显示：