Occurs when the data source view has changed.
当资料来源检视已变更时发生。
Gets or sets a value that indicates whether the data source view supports the ability to delete rows.
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。
Data source and data source view controls differ in their internal implementation for how to retrieve total row counts.
在检索总行数的方式上，数据源和数据源视图控件的内部实现不同。
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