Sharepoint 2007 Load DropDownList from list that depends on other

Sharepoint 2007 Load DropDownList from list that depends on other Sharepoint2007LoadDropDownListfromlistthatdependsonother Sharepoint 2007 Load DropDownList from list that depends on other [C#] Jaime López /PreviewSnippet.aspx?SnippetID=fda18110-98db-42ef-98ca-04324bd6ccf9 SurroundsWith


		/// Generic method to load information in a DropDownList control.
		/// 
		/// DropDownList control.
		/// List to get data.
		/// Column to get the text for the elements.
		/// Column to get the value for the elements.
		/// This DropDownList control is necessary for fill the DropDownList.
		/// Column to filter values from the DropDownList that depends on.
		private void LoadDropDownList( DropDownList ddl, SPList list, string titleField, string valueField, 
			DropDownList ddlDependsOn, string filterField )
		{
			if ( ddlDependsOn.SelectedIndex < 1 )
			{
				ddl.Items.Clear();
				ddl.Enabled = false;
			}
			else
			{
				ddl.Enabled = true;
				ArrayList elements = new ArrayList();
				ListItem li = new ListItem();
				li.Text = "No filtrar";
				li.Value = "0";
				ddl.Items.Add( li );
				for( int i = 0; i < list.ItemCount; i++ )
				{
					li = new ListItem();
					try
					{
						string filter = "";
						if ( null == list.Items[i].ContentType.Fields.GetField(filterField) )
							filter = list.Items[i][list.Items[i].Fields[filterField].InternalName].ToString();
						else
							filter = list.Items[i][list.Items[i].ContentType.Fields[filterField].InternalName].ToString();
						if ( filter.Trim().CompareTo( ddlDependsOn.SelectedItem.Text.Trim() ) == 0 )
						{
							if ( null == list.Items[i].ContentType.Fields.GetField(titleField) )
								li.Text = list.Items[i][list.Items[i].Fields[titleField].InternalName].ToString();
							else
								li.Text = list.Items[i][list.Items[i].ContentType.Fields[titleField].InternalName].ToString();
							if ( null != list.Items[i].Fields.GetField( valueField ) )
								li.Value = list.Items[i][list.Items[i].Fields[valueField].InternalName].ToString();
							else
								li.Value = list.Items[i][list.Items[i].ContentType.Fields[valueField].InternalName].ToString();
							if ( !elements.Contains( li.Text ) )
							{
								elements.Add( li.Text );
								ddl.Items.Add( li );
							}
						}
					}
					catch ( Exception )
					{
						// This exception is for the elements that are in blank or doesn't exists.
					}
				}
			}
		}]]>