필요한 데이터 멤버를 찾을 수 없기 때문에 C# Json 역직렬화 데이터 계약 유형을 역직렬화할 수 없습니다.

System.Runtime.Serialization.SerializationException: 数据协定类型“TestEntity”无法反序列化，因为未找到必需的数据成员“multipleChoice, runTimeDisplayColumns”。

在 System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)

private bool multipleChoice;
        /// <summary>
        /// 帮助引擎是否允许多选
        /// </summary>     
        [XmlIgnore]
        [Browsable(false)]
        public bool MultipleChoice
        {
            get
            {
                return multipleChoice;
            }
            set
            {
                multipleChoice = value;
            }
        }

        private string runTimeDisplayColumns;
        /// <summary>
        /// 帮助引擎运行时显示的列
        /// </summary>     
        [XmlIgnore]
        [Browsable(false)]
        public string RunTimeDisplayColumns
        {
            get
            {
                return runTimeDisplayColumns;
            }
            set
            {
                runTimeDisplayColumns = value;
            }
        }

[DataContract]
public class TestEntity
{
		private bool multipleChoice;
        /// <summary>
        /// 帮助引擎是否允许多选
        /// </summary>     
        [XmlIgnore]
        [Browsable(false)]
		[DataMember(IsRequired = false)]
        public bool MultipleChoice
        {
            get
            {
                return multipleChoice;
            }
            set
            {
                multipleChoice = value;
            }
        }

        private string runTimeDisplayColumns;
        /// <summary>
        /// 帮助引擎运行时显示的列
        /// </summary>     
        [XmlIgnore]
        [Browsable(false)]
		[DataMember(IsRequired = false)]
        public string RunTimeDisplayColumns
        {
            get
            {
                return runTimeDisplayColumns;
            }
            set
            {
                runTimeDisplayColumns = value;
            }
        }
}