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Because the dataset is part of your application (unlike the database backend), it's a logical place to build application-specific validation.
The best place to add validation to your application is in the dataset's partial class file.
Graphical XML editing and validation tool XMLFox Advance is XML/XSD editor for creating valid well-formed XML documents and/or XSD Schema.
XMLFox Advance XML/XSD editor is the Windows based graphical tool for authoring, updating, exploring, well-formedness checking or validating XML documents.
It's a good practice to validate data prior to sending updates to the underlying database.
This reduces errors as well as the potential number of round trips between an application and the database.
Those that need help in understanding schemas will find the Schema Tree inestimable, and developers maintaining other schemas will save hours of learning time with this XML editor. In XMLFox Advance you can output data to several other data format files.
The following example will allow you to Input Phone Number only.
Similarly if we want to validate phone number like xxx-xxx-xxxx format then you can use “\d-\d-\d”.
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Regular expressions are a good way to validate text fields such as names, addresses, phone numbers, and other user information. A regular expression can easily check whether a user entered something that looks like a valid phone number.
You can edit the data in controls and save your changes back to the database.