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rror:Cannot Access a property or methods of a abolition reference in flex
原标题:Error: Cannot access a property or method of a null object reference in flex

Getting error while run the checkBox item renderer in advanced datagrid with out data. Error: Cannot access a property or method of a null object reference.

请参看以下法典:

** 本文件迟交。

public function set listData(value:BaseListData):void
            {   

            _listData=value;                
            _dataGrid=value.owner as AdvancedDataGrid;
            _dataField=(value as AdvancedDataGridListData).dataField;

            }

** 本文件迟交。 here value is comming is null, so i am getting above exception. Please let me know how to fix it.

Thanks, Ravi

最佳回答

在试图获取价值特性之前检查无效:

_dataGrid = value != null ? value.owner as AdvancedDataGrid : null;
_dataField = value != null ? (value as AdvancedDataGridListData).dataField : null;

这样,数据 Grid和_data 如果价值无效,实地就会被确定为无效,避免你出现错误。

希望会有所帮助。

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