I have a class which is generated from xsd file.How to set value in this classs and Convert in to Json.? Please help.

[DataContract]
    public class RS_PkgAvail_Category
    {
        /// <remarks/>
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
        [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
        public partial class PI_TourAvailRS
        {
 
            private string successField;
 
            private PI_TourAvailRSToursTour[][] toursField;
 
            private string primaryLangIDField;
 
            private string requestedCurrencyField;
 
            private string targetField;
 
            private string versionField;
 
            private string timeStampField;
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public string Success
            {
                get
                {
                    return this.successField;
                }
                set
                {
                    this.successField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlArrayAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            [System.Xml.Serialization.XmlArrayItemAttribute("Tour", typeof(PI_TourAvailRSToursTour), Form = System.Xml.Schema.XmlSchemaForm.Unqualified, IsNullable = false)]
            public PI_TourAvailRSToursTour[][] Tours
            {
                get
                {
                    return this.toursField;
                }
                set
                {
                    this.toursField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string PrimaryLangID
            {
                get
                {
                    return this.primaryLangIDField;
                }
                set
                {
                    this.primaryLangIDField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string RequestedCurrency
            {
                get
                {
                    return this.requestedCurrencyField;
                }
                set
                {
                    this.requestedCurrencyField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string Target
            {
                get
                {
                    return this.targetField;
                }
                set
                {
                    this.targetField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string Version
            {
                get
                {
                    return this.versionField;
                }
                set
                {
                    this.versionField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string TimeStamp
            {
                get
                {
                    return this.timeStampField;
                }
                set
                {
                    this.timeStampField = value;
                }
            }
        }
 
        /// <remarks/>
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
        public partial class PI_TourAvailRSToursTour
        {
 
            private string placesCoveredField;
 
            private string basicInfoField;
 
            private string tourCategoryField;
 
            private string thumbImageField;
 
            private PI_TourAvailRSToursTourDateRange[] dateRangeField;
 
            private PI_TourAvailRSToursTourRatesRate[][] ratesField;
 
            private string tourCodeField;
 
            private string tourNameField;
 
            private string totalDaysField;
 
            private string totalNightsField;
 
            private string displayOrderField;
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public string PlacesCovered
            {
                get
                {
                    return this.placesCoveredField;
                }
                set
                {
                    this.placesCoveredField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public string BasicInfo
            {
                get
                {
                    return this.basicInfoField;
                }
                set
                {
                    this.basicInfoField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public string TourCategory
            {
                get
                {
                    return this.tourCategoryField;
                }
                set
                {
                    this.tourCategoryField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public string ThumbImage
            {
                get
                {
                    return this.thumbImageField;
                }
                set
                {
                    this.thumbImageField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute("DateRange", Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            public PI_TourAvailRSToursTourDateRange[] DateRange
            {
                get
                {
                    return this.dateRangeField;
                }
                set
                {
                    this.dateRangeField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlArrayAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
            [System.Xml.Serialization.XmlArrayItemAttribute("Rate", typeof(PI_TourAvailRSToursTourRatesRate), Form = System.Xml.Schema.XmlSchemaForm.Unqualified, IsNullable = false)]
            public PI_TourAvailRSToursTourRatesRate[][] Rates
            {
                get
                {
                    return this.ratesField;
                }
                set
                {
                    this.ratesField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string TourCode
            {
                get
                {
                    return this.tourCodeField;
                }
                set
                {
                    this.tourCodeField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string TourName
            {
                get
                {
                    return this.tourNameField;
                }
                set
                {
                    this.tourNameField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string TotalDays
            {
                get
                {
                    return this.totalDaysField;
                }
                set
                {
                    this.totalDaysField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string TotalNights
            {
                get
                {
                    return this.totalNightsField;
                }
                set
                {
                    this.totalNightsField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string DisplayOrder
            {
                get
                {
                    return this.displayOrderField;
                }
                set
                {
                    this.displayOrderField = value;
                }
            }
        }
 
        /// <remarks/>
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
        public partial class PI_TourAvailRSToursTourDateRange
        {
 
            private string validFromField;
 
            private string validToField;
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string ValidFrom
            {
                get
                {
                    return this.validFromField;
                }
                set
                {
                    this.validFromField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string ValidTo
            {
                get
                {
                    return this.validToField;
                }
                set
                {
                    this.validToField = value;
                }
            }
        }
 
        /// <remarks/>
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
        public partial class PI_TourAvailRSToursTourRatesRate
        {
 
            private string codeField;
 
            private string rateCategoryField;
 
            private string perPersonRateField;
 
            private string singleRoomSupplementField;
 
            private string extraBedRateField;
 
            private string commissionField;
 
            private string transportField;
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string Code
            {
                get
                {
                    return this.codeField;
                }
                set
                {
                    this.codeField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string RateCategory
            {
                get
                {
                    return this.rateCategoryField;
                }
                set
                {
                    this.rateCategoryField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string PerPersonRate
            {
                get
                {
                    return this.perPersonRateField;
                }
                set
                {
                    this.perPersonRateField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string SingleRoomSupplement
            {
                get
                {
                    return this.singleRoomSupplementField;
                }
                set
                {
                    this.singleRoomSupplementField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string ExtraBedRate
            {
                get
                {
                    return this.extraBedRateField;
                }
                set
                {
                    this.extraBedRateField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string Commission
            {
                get
                {
                    return this.commissionField;
                }
                set
                {
                    this.commissionField = value;
                }
            }
 
            /// <remarks/>
            [System.Xml.Serialization.XmlAttributeAttribute()]
            public string Transport
            {
                get
                {
                    return this.transportField;
                }
                set
                {
                    this.transportField = value;
                }
            }
        }
 
        /// <remarks/>
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
        [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
        public partial class MyDataSet
        {
 
            private PI_TourAvailRS[] itemsField;
 
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute("PI_TourAvailRS")]
            public PI_TourAvailRS[] Items
            {
                get
                {
                    return this.itemsField;
                }
                set
                {
                    this.itemsField = value;
                }
            }
        }
    }