How to show tooltip in DropDownList items on Mouseover event in asp.net using C#

In this article I will how to show tooltip in DropDownList items on Mouseover event in asp.net using C#

First we need bind data to DropDownList. See the below code for binding data to DropDownList.

Void BindDataToDropDownList()

{

  DataSet ds=new DataSet();

                ds = objUserRegistrationManager.GetSubDivision();

                ddlSubDivision.DataSource = ds;

                ddlSubDivision.DataValueField = "SDO_CD";

                ddlSubDivision.DataTextField = "SDO_CD";

                ddlSubDivision.DataBind();

}

After we can write the DataBound event for that DropDownList.

protected void ddlSubDivision _DataBound(object sender, EventArgs e)

{

DropDownList ddlDivision = sender as DropDownList;

if(ddlDivision!=null)

{

foreach (ListItem li in ddlDivision.Items)

{

li.Attributes["title"] = li.Text;

} 

}

}