Question

maybe using the latest technologies, in 3.5 SP1, is there a way to short this?

// Bruno: add the empty row with column names // -- select [CRM5].[USERGROUP].[UserGroup_id], [CRM5].[USERGROUP].[name] AS [name] if (col.ToLower().Contains('] as [')) {    // [CRM5].[USERGROUP].[name] AS [name]    splitColumn.Clear();    // clear the list    splitColumn.AddRange(col.Trim().Split(' '));    emptyRow.Append(String.Format(' '' AS {0},', splitColumn[splitColumn.Count - 1])); } else {    // [CRM5].[USERGROUP].[UserGroup_id]    splitColumn.Clear();    // clear the list    splitColumn.AddRange(col.Trim().Split('.'));    emptyRow.Append(String.Format(' '' AS {0},', splitColumn[splitColumn.Count - 1])); 

}

In other words, is there a way to retrieve the last element of a String when split?

maybe

col.Trim().Split('.').Find(x => x.LastItem); 

col is a String

splitColumn is a List < String >

Answer 1

Assuming that you’ve imported System.Linq:

var lastOrNull = ''.Split(' ').LastOrDefault(); 

To elaborating the above code snippet… this do the trick:

col = (col ?? '').Split(new char[] { ' ' },      int.MaxValue, StringSplitOptions.RemoveEmptyEntries)         .LastOrDefault();  if (col != null) {      emptyRow.Append(String.Format(' '' AS {0},', col); } 

Trim() is unnecessary if you specify StringSplitOptions.RemoveEmptyEntries. The above code will not throw if the string is null or empty.