小编use*_*641的帖子

我想格式化一个地址.这是我的代码:

address = String.Format("{0}, {1}, {2}, {3}, {4}, {5}, {6}",
                        postalAddress.Line1,
                        postalAddress.Line2,
                        postalAddress.Line3,
                        postalAddress.Line4,
                        postalAddress.Suburb,
                        postalAddress.StateCode,
                        postalAddress.Pcode);

不幸的是,116 Knox St, , , , Watson, ACT, 2602当Line2,Line3,Line4为空时会产生这种情况.如何处理空值以获得结果116 Knox St, Watson, ACT, 2602？