ExtendedAttributeDefinition.RemoveLookupValue

ExtendedAttributeDefinition.RemoveLookupValue method

Removes a value from the internal lookup list. This is a preferable way for manipulations with the ValueList.

public void RemoveLookupValue(Value value)
ParameterTypeDescription
valueValueValue to remove from lookup.

Remarks

This method works only for ExtendedAttributeDefinition instances which have CalculationType equals to Lookup.

Examples

Shows how to add extended attributes with lookups for assignments.

var project = new Project(DataDir + "Blank2010.mpp");

// Assign resource "1 TRG: Trade Group" to the "TASK 1" by creating a ResourceAssignment object.
var resource = project.Resources.GetById(1);
var task = project.RootTask.Children.GetById(1);
var assignment = project.ResourceAssignments.Add(task, resource);

// Create custom attribute definition with lookup.
var resExtendedAttributeDefinition = ExtendedAttributeDefinition.CreateLookupResourceDefinition(
    CustomFieldType.Cost,
    ExtendedAttributeResource.Cost5,
    "My lookup resource cost");
project.ExtendedAttributes.Add(resExtendedAttributeDefinition);

var firstValue = new Value { NumericValue = 1500, Description = "Val 1", Id = 1, Val = "1500" };
var secondValue = new Value { NumericValue = 2500, Description = "Val 2", Id = 2 };
resExtendedAttributeDefinition.AddLookupValue(firstValue);
resExtendedAttributeDefinition.AddLookupValue(secondValue);

// This value can be seen in "Resource usage" view of MS Project.
var attributeValue = resExtendedAttributeDefinition.CreateExtendedAttribute(firstValue);
assignment.ExtendedAttributes.Add(attributeValue);

// Create custom attribute definition with lookup.
var taskCostAttr = ExtendedAttributeDefinition.CreateLookupTaskDefinition(CustomFieldType.Cost, ExtendedAttributeTask.Cost4, "My lookup task cost");
project.ExtendedAttributes.Add(taskCostAttr);
var taskFirstValue = new Value { NumericValue = 18, Description = "Task val 1", Id = 3, Val = "18" };
var resSecondValue = new Value { NumericValue = 30, Description = "Task val 2", Id = 4 };
var taskWrongValue = new Value { NumericValue = 99, Description = "Task val Wrong", Id = 5, Val = "18" };

taskCostAttr.AddLookupValue(taskFirstValue);
resExtendedAttributeDefinition.AddLookupValue(resSecondValue);

// This value can be seen in "Task usage" view of MS Project.
assignment.ExtendedAttributes.Add(taskCostAttr.CreateExtendedAttribute(taskFirstValue));

// a wrong values can be removed later
taskCostAttr.RemoveLookupValue(taskWrongValue);

// working with project...

See Also

ExtendedAttributeDefinition.GetHashCode