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Migrating Master-Detail from RB 5

Starting with RB 5.5, the data traversal logic and report engine have been enhanced to support the new DADE linking features and to improve the ability of subreports to handle detail data. In the past the subreport did NOT properly honor the detail datapipeline SkipWhenNoRecords property. Now that this deficiency has been fixed it is  Full Article…

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Data Access Errors

TECH TIP:  Troubleshooting DataAccess Errors Do not filter the dataset of modify it any way once the report.Print command is issued. If you need to do master/detail and cannot use linked datasets, then use the master DataPipeline.OnRecordPositionChange event to filter the detail dataset. The reports and datapipelines use dataset bookmarking. Make sure the dataset can  Full Article…

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BLOB Errors in Old BDE

There are two BDE configuration settings that control how Blobs are handled. BlobsToCache Specifies how the BDE caches blobs when a dataset is traversed. If the value is set too low, this will result in an ‘Invalid Blob Handle’ error. Set BlobsToCache to -1 to enables an unlimited number of blobs to be cached. MaxBlobSize  Full Article…

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