如何使用 Regex.Match 执行部分搜索并返回完整单词？

Question

I'm trying to handle my exceptions based on regular expressions. To do this, all my constraints start the same way. (CCC_TABLE_COLUMN_TYPECONSTRAINT)

Ex:

CCC_USER_NAME_UNIQUE

CCC_BOOKS_TITLE_UNIQUE.

I'm not able to return the entire string.

try
{
      await DbContext.SaveChangesAsync().ConfigureAwait(false);
}catch(Exception ex)
{
      regex = new Regex("CCC");
      var reg1 = regex.Match(ex.toString());         
} 

In reg1 only "CCC" is returned. How do I return the entire constraint name?

Answer 1

You need to include matching all the parts

CCC_[A-Z]+_[A-Z]+_[A-Z]+

Assuming you are only using upper case letters in the names. If not replace the [AZ] with an expression that would match.