如何对多个""的连续使用

Question

我想把搜索结果，某列的列名设为空格，语句如下：select a as " " from abc这个语句在SQL里运行没问题。然后绑定到数据源里SqlDataSource1.SelectCommand="select a as " " from abc";这时就不行了，识别不出来，我换了个方法string a = " ";SqlDataSource1.SelectCommand="select a as "" + a + "" from abc";也是不行,大家说应该怎么弄好？