这将获得表中的第一列(如果没有列，则为null).

This gets the first column in the table (or null if there are no columns).

DataColumn firstColumn = dataTable.Columns.FirstOrDefault();
string name = "UNKNOWN";
if (firstColumn != null)
{
    name = firstColumn.ColumnName;
}

http://makeadvice.com/blog/?p= 148 [ ^ ]