如何清除表单数据

Question

我在layoutcontrol1下的表单上有很多Devexpress控件。我用了 下面的代码迭代每个控件并在用户单击“清除”按钮时清除现有数据。但是，它不适用于LookupEdit（将EditValue设置为0）和CheckedListBoxControl（取消选中所有选定的项目）。

foreach (Control c in layoutControl1.Controls)
{
   if (c.GetType() == typeof(TextEdit) || c.GetType()==typeof(MemoEdit))
       c.Text = String.Empty;

   if (c.GetType() == typeof(LookUpEdit))
       c.EditValue = 0; //doesn't have EditValue property

   if (c.GetType() == typeof(CheckedListBoxControl))
       c.CheckedItems = CheckState.Unchecked; //doesn't have such property
}

有什么建议吗？

Answer 1

试试以下内容：

foreach(Control c in layoutControl1.Controls) {
    var edit = c as DevExpress.XtraEditors.BaseEdit; // base class for DX editors
    if(edit != null)
        edit.EditValue = null;
    var listBox = c as DevExpress.XtraEditors.CheckedListBoxControl;
    if(listBox != null) 
        listBox.UnCheckAll();
}