当资料来源检视已变更时发生。
取得或设定值，这个值表示资料来源检视是否支援更新资料列。
Gets or sets a value that indicates whether the data source view supports the ability to delete rows.
支援排序的资料来源有资料检视、资料检视管理员和排序阵列。
Data sources that support sorting are data views, data view managers, and sorted arrays.
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