public class XEField : XField

Public Class XEField
	Inherits XField

Imports System
Imports BioloMICS.BioCallback
Imports BioloMICS.SharedClasses

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 E-Field from that table
        Dim FieldDefMap As New XFieldDefMap
        Dim FieldDef As XFieldDef = SqlCo.GetFieldByUserNameEng("Your_E_Field_name", TableDef.Key)
        If FieldDef Is Nothing Then '    that field doesn't exist
            Return
        End If
        FieldDefMap.Add(FieldDef)

        '    load all records
        Dim Where As XWhere = XWhere.All
        Dim RecordMap As XRecordMap = Run.LoadRecords(TableDef.Key, FieldDefMap, Where)

        For Each Record As XRecord In RecordMap
            Dim Field As XEField = TryCast(Record.Fields(FieldDef.Key), XEField)
            If Field Is Nothing Then    '    this field doesn't exist or is not a E-Field
                Continue For
            End If
            '    *****    E Field    *****
            Field.Value = "Date is " & Date.Now.ToShortTimeString

            Record.Save(False)
        Next
    End Sub
End Class