Formules d'écriture et de lecture
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]Aspose.Tasks pour l’API C ++ prend en charge les formules de lecture / écriture aux fichiers du projet MPP. La propriété de formule de l’extensionAttributeDefinition fournit l’interface pour lire la valeur de formule. Cet article décrit comment lire les formules des attributs étendus locaux et d’entreprise du fichier MPP. Il montre également comment rédiger des formules dans le fichier MPP.
Écriture de formules dans des attributs étendus aux formats de fichiers MPP
1// Create project instance
2System::String dataDir = RunExamples::GetDataDir(System::Reflection::MethodBase::GetCurrentMethod(ASPOSE_CURRENT_FUNCTION)->get_DeclaringType().get_FullName());
3System::SharedPtr<Project> project = System::MakeObject<Project>(dataDir + u"Project1.mpp");
4project->Set<NullableBool>(Prj::NewTasksAreManual(), NullableBool::to_NullableBool(false));
5
6// Create new custom field (Task Text1) with formula which will double task cost
7System::SharedPtr<ExtendedAttributeDefinition> attr = ExtendedAttributeDefinition::CreateTaskDefinition(Aspose::Tasks::CustomFieldType::Text, Aspose::Tasks::ExtendedAttributeTask::Text1, u"Custom");
8attr->set_Alias(u"Double Costs");
9attr->set_Formula(u"[Cost]*2");
10project->get_ExtendedAttributes()->Add(attr);
11
12// Add a task
13System::SharedPtr<Task> task = project->get_RootTask()->get_Children()->Add(u"Task");
14
15// Set task cost
16task->Set<System::Decimal>(Tsk::Cost(), static_cast<System::Decimal>(100));
17
18// Save project
19project->Save(dataDir + u"WriteFormulasInExtendedAttributesToMPP_out.mpp", Aspose::Tasks::Saving::SaveFileFormat::MPP);Reading Formulas in Local and Enterprise Extended Attributes from MPP file
1// The path to the documents directory.
2// Create project instance
3System::String dataDir = RunExamples::GetDataDir(System::Reflection::MethodBase::GetCurrentMethod(ASPOSE_CURRENT_FUNCTION)->get_DeclaringType().get_FullName());
4System::SharedPtr<Project> project1 = System::MakeObject<Project>(dataDir + u"ReadFormulas.mpp");
5// Attached test mpp
6
7// Read extended attribute formula
8System::SharedPtr<ExtendedAttributeDefinition> attr = project1->get_ExtendedAttributes()->idx_get(0);
9System::Console::WriteLine(System::String(u"Attribute Formula: ") + attr->get_Formula());Read-Only Access to Custom Field Values when Using Formulas
1// Create new project and extended attribute definition
2System::SharedPtr<Project> project = System::MakeObject<Project>();
3
4System::SharedPtr<ExtendedAttributeDefinition> attribute = ExtendedAttributeDefinition::CreateTaskDefinition(Aspose::Tasks::CustomFieldType::Cost, Aspose::Tasks::ExtendedAttributeTask::Cost1, u"");
5attribute->set_Formula(u"[Cost]-[Actual Cost]");
6
7project->get_ExtendedAttributes()->Add(attribute);
8
9// Add task
10System::SharedPtr<Task> task = project->get_RootTask()->get_Children()->Add(u"Task");
11
12// Create extended attribute
13System::SharedPtr<ExtendedAttribute> extendedAttribute = attribute->CreateExtendedAttribute();
14task->get_ExtendedAttributes()->Add(extendedAttribute);
15
16// Display if extended attributes are read only or not
17System::Console::WriteLine(extendedAttribute->get_ValueReadOnly() == true ? System::String(u"Value is Read only") : System::String(u"Value is not read only"));
18extendedAttribute->set_NumericValue(-System::Decimal(1000000));
19System::Console::WriteLine(extendedAttribute->get_NumericValue() == -System::Decimal(1000000) ? System::String(u"Formula values are read-only") : System::String(u"Values are not read-only"));