public class XMField : XField

Public Class XMField
	Inherits XField

Imports System
Imports BioloMICS.BioCallback
Imports BioloMICS.SharedClasses
Imports Biolomics.Utility.DatabaseConstants

Public Class Program

    <STAThread()>
    Shared Sub Main()
        Dim program As New Program
        program.ChangeField()

    End Sub
    '    Write sub functions here
    Public Sub ChangeField()
        '    get the current connection
        Dim SqlCo As XConnection = Run.GetCurrentConnection()
        If SqlCo Is Nothing Then
            Return
        End If

        '    get a table from its User name
        Dim TableDef As XTableDef = SqlCo.GetTableDefByUserNameEng("Your_Table_Name")
        If TableDef Is Nothing Then   '    may happen if that table doesn't exist
            Return
        End If
        '    load a Field from that table
        Dim FieldDefMap As New XFieldDefMap
        Dim FieldDef As XFieldDef = SqlCo.GetFieldByDBName("Your_M_Field_name", TableDef.Key)
        If FieldDef Is Nothing Then   '    that field doesn't exist
            Return
        End If
        FieldDefMap.Add(FieldDef)

        '    load about 10 records
        Dim Where As XWhere = XWhere.LTE(StaticFields.id, 11)
        Dim RecordMap As XRecordMap = Run.LoadRecords(TableDef.Key, FieldDefMap, Where)

        For Each Record As XRecord In RecordMap
            Dim Field As XMField = TryCast(Record.Fields(FieldDef.Key), XMField)
            If Field Is Nothing Then   '    this field doesn't exist or is not a M-Field
                Continue For
            End If
            If Field.Count = 0 Then '    should never happen
                Continue For
            End If
            '    convert from inches to cm the first subfield
            Dim SField As XSField = Field.GetValue(0)
            SField.Min *= 2.54
            SField.LP *= 2.54
            SField.HP *= 2.54
            SField.Max *= 2.54
            '    as we access directly a subfield, tell the parent field that there is a change
            Field.IsModified = True

            Record.Save(False)
        Next

    End Sub

End Class