static string GetComboBoxTextState(ComboBoxText container)
{
ComboBox combobox = container.ComboBox;
Hashtable table = new Hashtable();
table["style"] = combobox.DropDownStyle.ToString();
table["text"] = combobox.Text;
return(container.GetType().ToString() + ":"
+ StringUtil.BuildParameterString(table));
}
static void SetComboBoxTextState(ComboBoxText container,
string strText,
object default_value)
{
string strState = "";
ComboBox combobox = container.ComboBox;
if (string.IsNullOrEmpty(strText) == true &&
default_value != null)
{
if (default_value is int)
{
combobox.SelectedIndex = (int)default_value;
}
else if (default_value is string)
{
combobox.Text = (string)default_value;
}
else
{
throw new ArgumentException("ComboBoxText 的缺省值应当为 int 或 string 类型", "default_value");
}
return;
}
if (IsType(strText, container, out strState) == false)
{
return;
}
if (string.IsNullOrEmpty(strState) == false)
{
Hashtable table = StringUtil.ParseParameters(strState);
string strStyle = (string)table["style"];
string strValue = (string)table["text"];
ComboBoxStyle style;
Enum.TryParse <ComboBoxStyle>(strStyle, out style);
if (string.IsNullOrEmpty(strValue) == false)
{
combobox.Text = strValue;
if (combobox.Text != strValue)
{
combobox.Items.Add(strValue);
combobox.Text = strValue;
}
}
}
}
