When the DataTable column name encounters special characters & quot; [& quot; and & quot;] & quot;

I have a problem with http://bbs.csdn.net/topics/390781072.
It is used to obtain the minimum value of a column in the DataTable, but when the able is dynamically generated, the column name has special characters "[" and "]". Therefore, an exception occurs when you execute the DataTable computer method. This column cannot be found.
In fact, the fields of the original data source also contain special characters, as follows:

 

Before creating a able:

Below, Insus. NET has carefully read the msdn article:
Http://msdn.microsoft.com/en-us/library/system.data.datacolumn.expression%28VS.71%29.aspx

 

In this case, the solution can be as follows:

Webpage running result: