Dropdownlist title attribute not working.

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I have bound the values for dropdown list dynamically and i ve the strange case that the title attribute is working for a set of controls and not for other set of controls.

In the following case tooltip is showing,

C#

foreach (var description in descriptions)
                    {
                        var item = new ListItem();

                        item.Text = Convert.ToString(description.Title);
                        item.Value = Convert.ToString(description.ID);
                        item.Attributes["title"] = Convert.ToString(description.Description);
                        ddlDescription.Items.Add(item);
                    }

And in the following case its not working,

C#

foreach (var causeDetail in causeDetails)
                           {
                               var item = new ListItem();

                               item.Text = causeDetail.Title;
                               item.Value = Convert.ToString(causeDetail.ID);
                               item.Attributes["title"] = causeDetail.ToolTip;

                               ddlSection.Items.Add(item);
                           }

I have debugged the codes and I am sure that causeDetail.ToolTip has some values in it. Please help me in this case,
Thanks in advance.

Posted 5-Aug-14 4:43am

Strikerzz Arut

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2 solutions

Solution 1

Try doing the same in DataBound Event of DropDownList.

C#

protected void ddlSection_DataBound(object sender, EventArgs e)
{
    DropDownList ddl = sender as DropDownList;
    if(ddl!=null)
    {
        foreach (ListItem li in ddl.Items)
        {
            li.Attributes["title"] = li.Text;
        }
    }
}

--Amy

Posted 5-Aug-14 4:52am

_Amy

Comments

Strikerzz Arut 5-Aug-14 11:14am

The above solution could not reflect the ddl.Items right?
Do you want me to bind the values again?

_Amy 5-Aug-14 11:31am

You should bind your DropDown like this:
ddl.DataSource = causeDetails;
ddl.DataTextField = "Title";
ddl.DataValueField = "ID"
ddl.DataBind();
ddl.DataBound += ddlSection_DataBound;

Strikerzz Arut 5-Aug-14 11:34am

This is okay but after updating the list items i.e..,
li.Attributes["title"] = li.Text; again v need to bind it?

_Amy 5-Aug-14 11:38am

No. You don't need to rebind it. You don't need to loop and add the items to it. While binding the dropdown using above code snippet, databound event will be fired. And there you can set your title.

Strikerzz Arut 5-Aug-14 11:52am

The above code is to update the listitem li alone and I have to know how to use that li to update the ddl.items? The ddl.attributes["title"] can be used but it cannot reflect the values in all individual items. The final value in the foreach will be added to all the values as tooltip.

If u consider the above codes, both are in same format and 1 is working and the another is not working. Please correct me.

_Amy 5-Aug-14 11:57am

This happens in some cases. If you want to update your list item, instead you update your binding source(ie, datatable/list whatever you are using to bind the list). Then rebind the DropDown.

Strikerzz Arut 6-Aug-14 1:17am

Thats wat i ve asked you, whether i need to rebind it and it doesn't work as well.

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Strikerzz Arut · Accepted Answer · 2014-08-05T20:29:00

Solution 2

item.Attributes["title"] = causeDetail.ToolTip.ToString(); does it. Thanks _Amy for your response.

Posted 5-Aug-14 20:29pm

Strikerzz Arut