Microsoft-dynamics-ax-lookups

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Dynamics Ax 2012 Interview Questions:

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Oops concept in AX

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Exploring SysQuery class SysQuery is a helper class provided by Microsoft for working with queries dynamically. It has all its methods set as ‘static.’ It provides numerous functionalities that allow one to add data source in a query, add range, apply sort, etc. in a user-friendly system. This article will provide demonstrations for the most commonly used methods from SysQuery: findOrCreateDataSource() FindOrCreate is mainly used to check whether or not the query already contains the data source. If it does not, a data source will be created. FindOrCreate is most efficient when an event developer must write a code in which the event must be fired multiple times. This function allows developers to prevent adding additional elements to data sources. This is the most common situation in which findOrCreateDatasource() is used to avoid multiple addition of data sources in a query. Because this method is static, it uses Query as the first parameter. The next parameter w
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