Extension of a Form Datasource - Chain of command- D365 F&O - X++ Code
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COC for Form Datasource
[ExtensionOf(formDatasourcestr(SalesTableListPage,SalesTable))] final class TM_SalesTable_DataSource_Extension { public int active() { int ret = next active(); SalesTable SalesTable_ds = this.cursor(); if(SalesTable_ds.SalesStatus == SalesStatus::Invoiced) { this.formRun().design().controlName(formControlStr(SalesTableListPage,FormButtonControl1)).enabled(true); } else { this.formRun().design().controlName(formControlStr(SalesTableListPage,FormButtonControl1)).enabled(false); } return ret; } }