[英]Tooltip for Drop down list items
I have a dropdownlist and I want to add tooltip for dropdownlist items. 我有一个下拉列表,我想为下拉列表项添加工具提示。 I tried with following code, but it does not work; 我尝试使用以下代码,但它不起作用;
for(int d=0;d<drpID.Items.Count;d++)
{
drpID.Items[d].Attributes.Add("title", drpID.Items[d].Value);
}
Can anyone help me on this? 谁可以帮我这个事?
Try like this; 试试这样;
public void Tooltip(ListControl lc)
{
for (int d = 0; d < lc.Items.Count; d++)
{
lc.Items[d].Attributes.Add("title", lc.Items[d].Text);
}
}
You should use .Text
property for tooltip, not for .Value
. 您应该使用工具提示的.Text
属性,而不是.Value
。
Check out for this link: http://www.dotnetspider.com/resources/5099-Tool-tip-for-DropDownList-ASP-NET.aspx 查看此链接: http : //www.dotnetspider.com/resources/5099-Tool-tip-for-DropDownList-ASP-NET.aspx
Try following code: 请尝试以下代码:
foreach (ListItem item in drpID.Items)
{
item.Attributes.Add("Title", item.Text);
}
You should try this 你应该试试这个
protected void ddlDetails_DataBound(object sender, EventArgs e)
{
DropDownList ddl = sender as DropDownList;
if(ddl!=null)
{
foreach (ListItem li in ddl.Items)
{
li.Attributes["title"] = li.Text;
}
}
}
I know this thread was regarding a databound control, but in the infrequent case where you have actually hard coded the ListItem values in the aspx page, I simply added a 我知道这个线程是关于数据绑定控件的,但在不经常的情况下,你实际上在aspx页面中硬编码了ListItem值,我只是添加了一个
<asp:ListItem Id="liNumberOne" Runat="server" title="My nifty help text" />
attribute to the ListItem tag itself and it worked just fine. 属性为ListItem标签本身,它工作得很好。 Sure, I got a complaint about that not being a valid attribute but when the page rendered, it came along and then it WAS a valid attribute. 当然,我得到的投诉是,这不是一个有效的属性,但当页面呈现时,它出现了,然后它是一个有效的属性。
I've just had to implement a tooltip on a programatically populated DropDownList. 我只需要在以编程方式填充的DropDownList上实现工具提示。 I found that the title attribute was being set to the Text property automatically and I couldn't override it, even at PreRender. 我发现title属性被自动设置为Text属性,我无法覆盖它,即使在PreRender也是如此。
None of the suggestions on this thread worked, and I was eventually forced to use a jQuery approach. 这个线程上没有任何建议有效,我最终被迫使用jQuery方法。
When creating the list item I set a custom attribute with the tooltip text 创建列表项时,我使用工具提示文本设置自定义属性
ListItem item = new ListItem("Name", "Value");
item.Attributes.Add("tooltip", tooltip);
ddl.Items.Add(item);
Then fire the method below with a start up script 然后使用启动脚本触发下面的方法
function SetTooltip() {
jQuery('#<%=ddl.ClientID %> option').each(
function () {
jQuery(this).attr('title', jQuery(this).attr('tooltip'));
}
);
}
Pretty it ain't. 漂亮不是。 But it works. 但它的确有效。
foreach (ToolStripItem item in yourToolStripName.DropDownItems)
{
item.ToolTipText = "tool strip item message";
}
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