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Editor to share with you how to use ADO.NET designer, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

The ADO.NET designer allows you to do the following:

An entity data model is generated from a database and then displayed on the designer surface. Validate the model and the mapping at design time. You can choose to embed entity framework metadata items such as conceptual schema definition language (CSDL) projects, map specification language (MSL) projects, and store them in the schema definition language (SSDL) projects of the output assembly.

Copy the entity framework metadata project to the output directory. When changes are made in the database table, the update generates the model and mapping. The details of entity Mapping tool window can do the following in the details tool window of entity Mapping:

View and edit mappings for entities and associations. Map a table to an entity hierarchy of a single table by using each TPH. Map a table to an entity hierarchy of multiple tables by using each type (TPT). Map entities to stored procedures. Apply multiple conditions to the table mapping. Split entities between tables. The association of the mapping. Model browser tool window ADO.NET designer can do the following in the tool window of the Model browser:

The hierarchical structure of the visual tree is the model. You can easily browse to entities, attributes, and associations on the designer from the model browser and vice versa. Support for ADO.NET entity designer add the following support: in the new type SQL Server 2008 under Microsoft SQL Server Lite: ADO.NET designer supports the following new types in all Visual Studio 2008 version of Microsoft SQL Server 2008: date-time DateTime2 DateTimeOffset Filestream.

A new area of support in ADO.NET designers is the ability to drive system performance optimization and diagnostics through Visual Studio testing tools. This enables developers to run the analysis during testing. They can run the load and test process against the system, view the behavior of the system, and use integrated tools for analysis, debugging, and optimization. Another new feature is performance benchmarking: developers can save a baseline profile, and then, if performance degrades, they can compare the tracking data of * * to determine the root cause of the performance degradation.

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