自定义GP工具如何添加字段多选参数

                inputParameter = new GPParameterClass();



                IGPDataType inputType = new FieldTypeClass();



                IGPMultiValueType mvType = new GPMultiValueTypeClass();

                mvType.MemberDataType = inputType;



                IGPMultiValue mvValue = new GPMultiValueClass();

                mvValue.MemberDataType = inputType;



                inputParameter.DataType = mvType as IGPDataType;

                inputParameter.Value = mvValue as IGPValue;



                IGPFieldDomain2 fieldDomain = new GPFieldDomainClass();

                fieldDomain.UseRasterFields = false;

                inputParameter.Domain = fieldDomain as IGPDomain;



                inputParameter.AddDependency("input_features");



                // Set field name parameter properties

                inputParameter.Direction = esriGPParameterDirection.esriGPParameterDirectionInput;

                inputParameter.DisplayName = "检查的字段";

                inputParameter.Name = "field_names";

                inputParameter.ParameterType = esriGPParameterType.esriGPParameterTypeRequired;



                UID pUID = new UIDClass();

                pUID.Value = "{38C34610-C7F7-11D5-A693-0008C711C8C1}"; // 带复选框的可多选列表

                inputParameter.ControlCLSID = pUID;

                parameters.Add(inputParameter);