I have multiple items in asp drop down list and I want to set its `DataValueField` to one by one using loop. I did it as follow.

```
int cnt = ddl2.Items.Count;

for(int j=0;j<cnt;j++)
{
    string val = ddl2.Items[j].ToString();
    int datafieldid = // want datavaluefield id here
}

```

Please help.

Thanks.