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我有个问题要问。我在我的应用程序中有一个下拉列表。但下拉列表是用层次结构格式填充的。请c中的图片粗体和下划线下拉列表菜单项asp.net
如上图片。我该如何大胆和强调母菜单项，如男,女和不适用另一方面，也不允许父项选择。
这里是我的编码
private void createDDLCategory()
{
ddlCategory.AppendDataBoundItems = true;
ddlCategory.Items.Insert(0, new ListItem("All","A"));
ddlCategory.SelectedIndex = 0;
var ddl1 = dropdownlist.ddlCategoryWithoutGroup();
foreach (var value in ddl1)
{
if (value.P_CATEGORY_ID == null)
{
this.ddlCategory.Items.Add(new ListItem(value.CATEGORY_NAME, value.CATEGORY_ID.ToString()));
this.ddlCategory.Items.FindByValue(value.CATEGORY_ID.ToString()).Selected = false;
this.ddlCategory.Items.FindByValue(value.CATEGORY_ID.ToString()).Attributes.Add("disabled", "true");
this.ddlCategory.Items.FindByValue(value.CATEGORY_ID.ToString()).Attributes.Add("style", "font-weight:bold;");
foreach (var valueChild in ddl1)
{
if (valueChild.P_CATEGORY_ID == value.CATEGORY_ID)
this.ddlCategory.Items.Add(new ListItem(" " + valueChild.CATEGORY_NAME, valueChild.CATEGORY_ID.ToString()));
}
}
}
foreach (ListItem item in ddlCategory.Items)
{
item.Text = HttpUtility.HtmlDecode(item.Text);
}
}
乌尔帮助appreciate.Thanks