System.Data.XmlTreeGen.AddXdoProperty C# (CSharp) Метод

        internal void AddXdoProperty(PropertyDescriptor pd, object instance, XmlElement root, XmlDocument xd)
        {
            Type type = pd.PropertyType;
            bool bisDataColumn = false;
            DataColumn col = null;  // it may cause problem to assign null here, I will need to change this.
            bool bIsSqlType = false;
            bool bImplementsInullable = false;

            if (instance is DataColumn)
            {
                col = (DataColumn)instance;
                bisDataColumn = true;
                bIsSqlType = col.IsSqlType;
                bImplementsInullable = col.ImplementsINullable;
            }

            if (bImplementsInullable == false &&
                 type != typeof(string) &&     // DO NOT REMOVE THIS CHECK
                 type != typeof(bool) &&
                 type != typeof(Type) &&
                 type != typeof(object) &&
                 type != typeof(CultureInfo) &&
                 type != typeof(long) &&
                 type != typeof(int))
            {
                return;
            }

            if ((!pd.ShouldSerializeValue(instance) || !pd.Attributes.Contains(DesignerSerializationVisibilityAttribute.Visible)) && (bIsSqlType == false))
            {
                return;
            }

            object propInst = pd.GetValue(instance);

            if (propInst is InternalDataCollectionBase)
                return;

            if (propInst is PropertyCollection)
            {
                return;
            }
            // SDUB: perf: Why not have this as a table?
            // there are several xdo properties that equal to some xml attributes, we should not explicitly ouput them.
            if (
                string.Equals(pd.Name, "Namespace", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "PrimaryKey", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "ColumnName", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "DefaultValue", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "TableName", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "DataSetName", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "AllowDBNull", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "Unique", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "NestedInDataSet", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "Locale", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "CaseSensitive", StringComparison.Ordinal) ||
                string.Equals(pd.Name, "RemotingFormat", StringComparison.Ordinal)
            )
            {
                return;
            }

            if (bisDataColumn)
            {
                if (string.Equals(pd.Name, "DataType", StringComparison.Ordinal))
                {
                    string dt = XmlDataTypeName(col.DataType);
                    if (bIsSqlType || (col.DataType == typeof(System.Numerics.BigInteger)))
                    {
                        root.SetAttribute(Keywords.MSD_DATATYPE, Keywords.MSDNS, col.DataType.FullName);
                    }
                    else if ((dt.Length == 0) || bImplementsInullable || ((dt == Keywords.XSD_ANYTYPE) && (col.XmlDataType != Keywords.XSD_ANYTYPE)) || (col.DataType == typeof(DateTimeOffset)))
                    {
                        // in Whidbey, XmlDataTypeName function changed to return "anyType" for typeof(Object)
                        // should still always hit this code path for all non-built in types
                        // to handle version qualified typeof(Object) and other CDT objects correctly

                        // we must write the output exactly the same way as we read it
                        SetMSDataAttribute(root, col.DataType);
                    }
                    return;
                }
                if (string.Equals(pd.Name, "Attribute", StringComparison.Ordinal))
                {
                    return;
                }
            }

            string textValue = pd.Converter.ConvertToString(propInst);
            root.SetAttribute(pd.Name, Keywords.MSDNS, textValue);
            return;
        }