Implementing IGPFunction - ParameterInfo

BalajiViswanathan — Sun, 06 Jun 2010 11:08:55 GMT

Hi,

I need to design my Front-end for a Geoprocessing tool with all the input parameters, for which i need to implement IGPFunction.

To get an input Featureclass from the user, my parameter is coded like this.

                Dim pParameters As IArray = New ArrayClass()

                'Input DataType is GPFeatureLayerType
                Dim inputParameter As IGPParameterEdit = New GPParameterClass()
                inputParameter.DataType = New GPFeatureLayerTypeClass()

                ' Default Value object is DEFeatureClass
                inputParameter.Value = New GPFeatureLayerClass()

                ' Set Input Parameter properties
                inputParameter.Direction = esriGPParameterDirection.esriGPParameterDirectionInput
                inputParameter.DisplayName = "Input Features"
                inputParameter.Name = "input_features"
                inputParameter.ParameterType = esriGPParameterType.esriGPParameterTypeRequired
                pParameters.Add(inputParameter)

This works fine. Now my task is to get a ComboBox, on click of the drop-down menu, i need to get the FieldNames of the input Feature class. (Refer the attached jpeg)

How do i code to get a parameter like this?

Expecting an answer.

Re: Implementing IGPFunction - ParameterInfo

JasonScheirer — Mon, 07 Jun 2010 22:49:56 GMT

Set the Domain attribute on the Parameter object as a GPCodedValueDomain populated to your values.

topic Implementing IGPFunction - ParameterInfo in ArcObjects SDK Questions

Implementing IGPFunction - ParameterInfo

Re: Implementing IGPFunction - ParameterInfo