.net 中的bug：System.OutOfMemoryException At System.String.GetStringForStringBuilder

当用WebService返回大数据时，会出现如下错误：

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity)
at System.Text.StringBuilder.GetNewString(String currentString, Int32 requiredLength)
at System.Text.StringBuilder.Append(String value)
……

是由于StringBuilder 中内存不足，可看MSDN上的说明

http://blogs.msdn.com/b/vsofficedeveloper/archive/2008/10/10/stringbuilder-outofmemoryexception.aspx