A quick one to share:<\/p>\n
I needed to a method to quickly convert a List<string> to a plain comma delimited string. So I created this little Extension class:<\/p>\n
public\u00a0static\u00a0class<\/span>\u00a0ListEx
\n{<\/p>\npublic\u00a0static\u00a0string<\/span>\u00a0ToCSVString(this\u00a0List<\/span><string<\/span>>\u00a0l)
\n{<\/p>\nStringBuilder\u00a0<\/span>sb\u00a0=\u00a0new\u00a0StringBuilder<\/span>();
\nif\u00a0<\/span>(l\u00a0!=\u00a0null<\/span>)
\n{<\/p>\nl.ForEach(li\u00a0=>\u00a0sb.Append(li\u00a0+\u00a0“,\u00a0“));<\/p>\n
}
\nreturn\u00a0<\/span>sb.ToString().Trim(‘\u00a0‘,\u00a0‘,’);<\/p>\n}<\/p>\n
}<\/p><\/blockquote>\n
Of course this is still very specific to string collections only. I could have created something that does the same to say a List<T> list that is more generic but that I’ll leave for another day.<\/p>\n
[Update]<\/p>\n
While I’m at it – here is the opposite method:<\/p>\n
public static List<\/span><string<\/span>> ToListFromCSVString(this string<\/span> s, bool<\/span> ordered = false<\/span>)
\n{<\/p>\nList<\/span><string<\/span>> list = new List<\/span><string<\/span>>();
\nif<\/span> (s != null<\/span> && s.Trim().Length > 0)
\n{<\/p>\nif<\/span> (ordered)<\/p>\n
list.AddRange((from<\/span> sitem in<\/span> s.Split(new char[] { ‘,’ }, StringSplitOptions<\/span>.RemoveEmptyEntries)
\norderby<\/span> sitem
\nselect<\/span> sitem.Trim()).ToArray());<\/p>\nelse<\/span><\/p>\n
list.AddRange((from<\/span> sitem in<\/span> s.Split(new char[] { ‘,’ }, StringSplitOptions<\/span>.RemoveEmptyEntries)
\nselect<\/span> sitem.Trim()).ToArray());<\/p>\n}<\/p>\n
return<\/span> list;<\/p>\n
}<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"
A quick one to share: I needed to a method to quickly convert a List<string> to a plain comma delimited string. So I created this little Extension class: public\u00a0static\u00a0class\u00a0ListEx { public\u00a0static\u00a0string\u00a0ToCSVString(this\u00a0List<string>\u00a0l) { StringBuilder\u00a0sb\u00a0=\u00a0new\u00a0StringBuilder(); if\u00a0(l\u00a0!=\u00a0null) { l.ForEach(li\u00a0=>\u00a0sb.Append(li\u00a0+\u00a0“,\u00a0“)); } return\u00a0sb.ToString().Trim(‘\u00a0‘,\u00a0‘,’); } } …<\/p>\n