VB.NetData Types

VB.Net - Lists - SortedList

The sorted list object is used to contain a list that is somehow sorted alphabetically.

Sample of creating a list

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  Public shared Function WhichColumns2SortedList (whichColumns As String) _
          As SortedList(of String, si.ui_lv_colspec)
	
'
' whichColumns could be a string that looks like this
' A|Hello;Z|ZHello;C|Common Data
'
      Dim columnsToGenerate As New SortedList(Of  String, si.ui_lv_colspec)

      Dim args() As String _
              = whichColumns.Split(";"c)
      For Each arg As String In args
          Dim dta() As String = arg.Split("|"c)

          Dim aControlSpec As si.Ui_Lv_ColSpec _
                  = New si.Ui_Lv_ColSpec(arg)

          columnsToGenerate.Add(CDbl(dta(0).ToUpper, aControlSpec)
      Next
      return Columnstogenerate
  End Function

This function will take a string (something like A|Hello;Z|ZHello;C|Common Data) and split it by semicolons. (In our example into 3 pieces). Then it will take those splits and turn each one of those into pieces. (in the first one there will be A and Hello). An object is created of type si.Ui_Lv_ColSpec. It’s initialized with the original piece (ex A|Hello). Then the object, and the first part of the object (A in the A|Hello) will be added to the sorted list.

The result is a sorted list. That list will be sorted by the first argument of the add method.

To step through the list you would do something like this

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   for each  de as KeyValuePair(of double, si.Ui_Lv_ColSpec) In ColumnsToGenerate
       dim aControlSpec as si.Ui_Lv_ColSpec _
           = de.Value
	
	print aControlSpec.Title
next

If you did started off with an input string of (A|Hello;Z|ZHello;C|Common Data) the output of this would be:

  • Hello
  • Common Data
  • ZHello