dpRe.Items[dpRe.SelectedIndex].Selected = false;
dpRe是一个DropdownList,为什么我设置了:
dpRe.Items[dpRe.SelectedIndex].Selected = false;
但调试时,过了这句代码再看dpRe.Items[dpRe.SelectedIndex].Selected的值为什么还是为true啊,蛋疼,
就是因为这样老是报错:'dpRe' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value这个问题到底怎么解决啊,DropdownList总有这个问题,纠结好久了,在线等,帮帮忙吧……
dpRe是一个DropdownList,为什么我设置了:
dpRe.Items[dpRe.SelectedIndex].Selected = false;
但调试时,过了这句代码再看dpRe.Items[dpRe.SelectedIndex].Selected的值为什么还是为true啊,蛋疼,
就是因为这样老是报错:'dpRe' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value这个问题到底怎么解决啊,DropdownList总有这个问题,纠结好久了,在线等,帮帮忙吧……
{
dpRe.SelectedValue = oDvRes[0]["CodeID"].ToString();
}
else {
ListItem oReItem = new ListItem(oDvRes[0]["CodeDesc"].ToString(), oDvRes[0]["CodeID"].ToString());
dpRe.Items.Add(oReItem);
dpRe.SelectedValue = oReItem.Value;
}
if (dpRe.Items.Contains(new ListItem(oDvRes[0]["CodeDesc"].ToString(), oDvRes[0]["CodeID"].ToString())))
{
dpRe.SelectedValue = oDvRes[0]["CodeID"].ToString();
}
else {
ListItem oReItem = new ListItem(oDvRes[0]["CodeDesc"].ToString(), oDvRes[0]["CodeID"].ToString());
dpRe.Items.Add(oReItem);
dpRe.SelectedValue = oReItem.Value;
}