使用DataSource绑定一维数组时，DataTextField只需绑定空字符串

public static void InitDropDownList(DropDownList ddl, bool isAddTopItem, DropDownList ddlSub, object ddlDataSource, string ddlTextField, string ddlValueField)
{
ddl.DataSource = ddlDataSource;
ddl.DataTextField = ddlTextField;
ddl.DataValueField = ddlValueField;
ddl.DataBind();
if (isAddTopItem)
ddl.Items.Insert(0, new ListItem("--All--", "0"));
if (ddlSub != null)
ddlSub.Items.Insert(0, new ListItem("--All--", "0"));
}

XXClass.InitDropDownList(ddlAvailableFieldEnter, false, null, new string[]{"field1","field2","field3"}, "", "");