问题描述
当前，我需要根据特定条件来更改列的名称，但是要做到这一点，我想用它的ExternalName而不是它的名称来引用该列.
Currently I need to change the name of a column depending on specific criteria but to do that I'd like to refer to that column by its ExternalName rather than its name.
aColumn = Document.ActiveDataTableReference.Columns["I_id"].Name
不幸的是，这不起作用.
unfortunately this doesn't work.
aColumn = Document.ActiveDataTableReference.Columns["I_id"].ExternalName
推荐答案
您非常亲密！ ExternalName不是 DataColumn对象的属性. ，我想您已经弄清楚了为什么您的方法行不通.
you're very close! ExternalName isn't a property of the DataColumn object, which is, I suppose you've figured out, why your approach isn't working.
实际上，ExternalName是 DataColumnProperties.DefaultProperties类.您实际上会像访问自定义的 Column Property 一样访问它，如下所示:
in fact, ExternalName is an item represented by the DataColumnProperties.DefaultProperties class. you would actually access this as if it were a custom-defined Column Property like so:
col_ext_name = Document.ActiveDataTableReference.Columns["I_id"].Properties["ExternalName"]
print(col_ext_name)
>> index_id
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