Build a More Powerful CRM System with Visual Basic .NET Extensions: Listing 2.

Contact Lookup with Updates.

  framework.LogOn(PADFile, ACTUserName, ACTUserPassword)
  Dim columnState As Act.Framework.Lookups.CriteriaColumn =
      framework.Lookups.GetCriteriaColumn("TBL_CONTACT", "BUSINESS_STATE", isReal:=True)
  Dim equalOperator As Act.Framework.Lookups.OperatorEnum = 
	Act.Framework.Lookups.OperatorEnum.EqualTo
  Dim valueState = "CA"
  Dim criteriaState As Act.Framework.Lookups.Criteria() = New 
	Act.Framework.Lookups.Criteria() {
          New Act.Framework.Lookups.Criteria(
    Act.Framework.Lookups.LogicalOperator.End, leftParen:=CByte(0), rightParen:=CByte(0),
    col:=columnState, opEnum:=equalOperator, Val:=valueState)}
  Dim lookupState As Act.Framework.Lookups.ContactLookup =
      	framework.Lookups.LookupContactsReplace(criteriaState, includePrivate:=True, 	includeUsers:=True)
  Dim contactsState = lookupState.GetContacts(SortCriteria:=Nothing)

  'We have the list of Contacts for CA, now narrow it those living in Los Angeles

  'You can then narrow the lookup by city, sorted by Last Name as follows:
  Dim columnCity = framework.Lookups.GetCriteriaColumn("TBL_CONTACT", 
	"BUSINESS_CITY", isReal:=True)
  Dim valueCity = "Los Angeles"
  Dim lookupCity = framework.Lookups.LookupContactsNarrow(
      	contactsState, valueCity, Act.Framework.Lookups.OperatorEnum.EqualTo, columnCity)
  Dim lastNameField = framework.Contacts.GetFieldDescriptor( 	name:="TBL_CONTACT.LASTNAME", isReal:=True)
  Dim firstNameField = framework.Contacts.GetFieldDescriptor( 	name:="TBL_CONTACT.FIRSTNAME", isReal:=True)
  Dim User10Field = framework.Contacts.GetFieldDescriptor( 
	name:="TBL_CONTACT.USER10", isReal:=True)
  Dim sortByLastFirstNameAscending() As SortCriteria = {
      New SortCriteria(lastNameField, 
		System.ComponentModel.ListSortDirection.Ascending),
      New SortCriteria(firstNameField, 
		System.ComponentModel.ListSortDirection.Ascending)}
  Dim contactsStateCity = lookupCity.GetContacts(sortByLastFirstNameAscending)


  Dim displayList As New List(Of ContactIdentity)
  For i = 0 To contactsStateCity.Count - 1
      displayList.Add(
          New ContactIdentity With {
		.CompanyName = contactsStateCity(i).Company,
		.LastName = contactsStateCity.Item(i).LastName,
		.FirstName = contactsStateCity.Item(i).FirstName,
		.City = contactsStateCity(i).Fields("CITY",
		        Act.Framework.MutableEntities.FieldNameType.Alias),
		.State = contactsStateCity(i).Fields("STATE",
		        Act.Framework.MutableEntities.FieldNameType.Alias),
	          .Phone = contactsStateCity(i).Fields("PHONE",
			 Act.Framework.MutableEntities.FieldNameType.Alias),
	          .MobilePhone = contactsStateCity(i).Fields("MOBILE_PHONE",
		        Act.Framework.MutableEntities.FieldNameType.Alias)
          })

      'For illustration purposes, 
	‘change the User10 field to the current date/time if blank
      If contactsStateCity(i).Fields("USER10",
	   Act.Framework.MutableEntities.FieldNameType.Alias) =
          String.Empty AndAlso contactsStateCity(i).IsRequestingUserRecordManager Then
       	User10Field.SetValue(contactsStateCity(i), Now.ToString)
	       contactsStateCity(i).Update()
      End If
  Next
  Me.DataGridView1.DataSource = displayList
  framework.LogOff()

About the Author

Joe Kunk is a Microsoft MVP in Visual Basic, three-time president of the Greater Lansing User Group for .NET, and developer for Dart Container Corporation of Mason, Michigan. He's been developing software for over 30 years and has worked in the education, government, financial and manufacturing industries. Kunk's co-authored the book "Professional DevExpress ASP.NET Controls" (Wrox Programmer to Programmer, 2009). He can be reached via email at [email protected].

comments powered by Disqus

Featured

  • Entity Framework Core 6: What Developers Want

    Microsoft outlined its plan for Entity Framework Core 6, which in November will take its place as the data access component of the landmark .NET 6, a long-term support (LTS) release that will mark Microsoft's transition from the Windows-only .NET Framework to an open source, cross-platform umbrella offering of all things .NET.

  • AWS Open Sources .NET Porting Assistant GUI

    After previously open sourcing components of its Porting Assistant for .NET, Amazon Web Services open sourced the tool's GUI.

  • .NET Core Ranks High Among Frameworks in New Dev Survey

    .NET Core placed high in a web-dominated ranking of development frameworks published by CodinGame, which provides a tech hiring platform.

  • Here's a One-Stop Shop for .NET 5 Improvements

    Culled from reams of Microsoft documentation, here's a high-level summary of what's new for performance, networking, diagnostics and more, along with links to the nitty-gritty details for those wanting to dig in more.

Upcoming Events