I am upgrading from webcombo to Webdropdown control and need the following code to be replaced with it corresponding webdropdown.

1) this.webcombo1.DisplayValue  -->  equivalent in webdropdown ?

2)webcombo1.Rows.Clear(true); -->  equivalent in webdropdown ?

3)this.webcombo1.DataSource -->equivalent in webdropdown ?

4) this.webcombo1.SelectedIndex = 0; --->equivalent in webdropdown ?

5) foreach (Infragistics.WebUI.UltraWebGrid.UltraGridRow dr in this.webcombo1.Rows)  ---> equivalent in webdropdown ?