ComboBoxEdit

//默认值

cmb.Properties.NullText = "--请选择--";

//清空所有项

cmb.Properties.Items.Clear();

//赋值

cmb.Properties.Items.Add("AA");

cmb.Properties.Items.Add("BB");

cmb.Properties.Items.Add("CC");

cmb.Properties.Items.Add("DD");

cmb.Properties.Items.Add("EE");

cmb.Properties.Items.Add("FF");

cmb.Properties.Items.Add("GG");

cmb.Properties.Items.Add("HH");

////实际值

//string value = cmb.EditValue.ToString();

////显示值

//string dis = cmb.Text.ToString();

//读取选中值 （前提索引大于 -1）

if (cmb.SelectedIndex > -1)

{

string selectValue = cmb.Properties.Items[cmb.SelectedIndex].ToString();

}

//设置默认选中项(两种方式)

cmb.Text = cmb.Properties.Items[0].ToString();

cmb.SelectedIndex = 0;

//只可以选择、不可编辑

cmb.Properties.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.DisableTextEditor;

//是否排序

cmb.Properties.Sorted = false;

//下拉项的个数

int numCount = cmb.Properties.Items.Count;

//下拉显示项的个数 例：最多显示6项

cmb.Properties.DropDownRows = numCount > 5 ? 6 : numCount + 1;