System.Data.ProviderBase.DataReaderContainer.GetSchemaTable C# (CSharp) Method

        internal DataTable GetSchemaTable()
        {
            return _dataReader.GetSchemaTable();
        }
        internal bool NextResult()

        internal SchemaMapping(DataAdapter adapter, DataSet dataset, System.Data.DataTable datatable, DataReaderContainer dataReader, bool keyInfo, SchemaType schemaType, string sourceTableName, bool gettingData, DataColumn parentChapterColumn, object parentChapterValue)
        {
            MissingMappingAction missingMappingAction;
            MissingSchemaAction missingSchemaAction;
            this._dataSet = dataset;
            this._dataTable = datatable;
            this._adapter = adapter;
            this._dataReader = dataReader;
            if (keyInfo)
            {
                this._schemaTable = dataReader.GetSchemaTable();
            }
            if (adapter.ShouldSerializeFillLoadOption())
            {
                this._loadOption = adapter.FillLoadOption;
            }
            else if (adapter.AcceptChangesDuringFill)
            {
                this._loadOption = (LoadOption) 4;
            }
            else
            {
                this._loadOption = (LoadOption) 5;
            }
            if (SchemaType.Mapped == schemaType)
            {
                missingMappingAction = this._adapter.MissingMappingAction;
                missingSchemaAction = this._adapter.MissingSchemaAction;
                if (ADP.IsEmpty(sourceTableName))
                {
                    if (this._dataTable != null)
                    {
                        int num2 = this._adapter.IndexOfDataSetTable(this._dataTable.TableName);
                        if (-1 == num2)
                        {
                            switch (missingMappingAction)
                            {
                                case MissingMappingAction.Passthrough:
                                    this._tableMapping = new DataTableMapping(this._dataTable.TableName, this._dataTable.TableName);
                                    goto Label_01DB;

                                case MissingMappingAction.Ignore:
                                    this._tableMapping = null;
                                    goto Label_01DB;

                                case MissingMappingAction.Error:
                                    throw ADP.MissingTableMappingDestination(this._dataTable.TableName);
                            }
                            throw ADP.InvalidMissingMappingAction(missingMappingAction);
                        }
                        this._tableMapping = this._adapter.TableMappings[num2];
                    }
                }
                else
                {
                    this._tableMapping = this._adapter.GetTableMappingBySchemaAction(sourceTableName, sourceTableName, missingMappingAction);
                }
            }
            else
            {
                if (SchemaType.Source != schemaType)
                {
                    throw ADP.InvalidSchemaType(schemaType);
                }
                missingMappingAction = MissingMappingAction.Passthrough;
                missingSchemaAction = MissingSchemaAction.Add;
                if (!ADP.IsEmpty(sourceTableName))
                {
                    this._tableMapping = DataTableMappingCollection.GetTableMappingBySchemaAction(null, sourceTableName, sourceTableName, missingMappingAction);
                }
                else if (this._dataTable != null)
                {
                    int num = this._adapter.IndexOfDataSetTable(this._dataTable.TableName);
                    if (-1 != num)
                    {
                        this._tableMapping = this._adapter.TableMappings[num];
                    }
                    else
                    {
                        this._tableMapping = new DataTableMapping(this._dataTable.TableName, this._dataTable.TableName);
                    }
                }
            }
        Label_01DB:
            if (this._tableMapping != null)
            {
                if (this._dataTable == null)
                {
                    this._dataTable = this._tableMapping.GetDataTableBySchemaAction(this._dataSet, missingSchemaAction);
                }
                if (this._dataTable != null)
                {
                    this._fieldNames = GenerateFieldNames(dataReader);
                    if (this._schemaTable == null)
                    {
                        this._readerDataValues = this.SetupSchemaWithoutKeyInfo(missingMappingAction, missingSchemaAction, gettingData, parentChapterColumn, parentChapterValue);
                        return;
                    }
                    this._readerDataValues = this.SetupSchemaWithKeyInfo(missingMappingAction, missingSchemaAction, gettingData, parentChapterColumn, parentChapterValue);
                }
            }
        }