Entity Framework Core Bridge Types
The EF Core Bridge category only has one type, EfCoreMergeAdapter. It provides a way to load data from a database into a dataset using the LoadData method and save data from a dataset to the database using the SaveData method. There are two overloads of the LoadData method. The first is useful for loading data from a single table in the database. The second is useful for loading data from multiple tables in the database.
/// <summary>
/// Loads data into data set for an initial UI baseline or full refresh, returning a snapshot dataset that can be merged into the UI baseline.
/// </summary>
/// <typeparam name="TEntity">Entity type</typeparam>
/// <param name="dbContext">DB context</param>
/// <param name="efQuery">Entity Framework query</param>
/// <param name="tableName">Table name</param>
/// <returns>Data set with loaded data</returns>
public static IDataSet LoadData
/// <summary>
/// Loads data into data set for an initial UI baseline or full refresh, returning a snapshot dataset that can be merged into the UI baseline.
/// </summary>
/// <typeparam name="TEntity">Entity type</typeparam>
/// <param name="dbContext">DB context</param>
/// <param name="efQuery">Entity Framework query</param>
/// <param name="targetDataSet">Target data set</param>
/// <param name="tableName">Table name</param>
/// <exception cref="ArgumentNullException">Thrown if table name is not provided</exception>
public static void LoadData
/// <summary>
/// Saves data and returns post-save data set with server-confirmed values (e.g. identity column values, concurrency tokens, etc.) after save.
/// </summary>
/// <param name="dbContext">DB context</param>
/// <param name="changeset">Change set</param>
/// <returns>Result of saving - the post-save data set</returns>
public static IDataSet SaveData(DbContext dbContext, IDataSet changeset)
Namespace: PocoDataSet.EfCoreBridge
Assembly: PocoDataSet.EfCoreBridge.dll
a) Example of loading data from one table only.
using var loadContext = new AppDbContext();
IDataSet baselineDataSet = EfCoreMergeAdapter.LoadData(loadContext, loadContext.Departments.AsNoTracking().OrderBy(x => x.Name), "Department");
b) Example of loading data from multiple tables.
using var loadContext = new AppDbContext();
IDataSet baselineDataSet = DataSetFactory.CreateDataSet();
EfCoreMergeAdapter.LoadData(loadContext, loadContext.Departments.AsNoTracking().OrderBy(x => x.Name), baselineDataSet, "Department");
EfCoreMergeAdapter.LoadData(loadContext, loadContext.Employees.AsNoTracking().OrderBy(x => x.LastName).ThenBy(x => x.FirstName), baselineDataSet, "Employee");
baselineDataSet.ApplyEfModelKeysAndRelations(loadContext);
Assuming changeset is a dataset representing changes to be saved to the database,
for example created by calling CreateChangeset() on an observable dataset after user edits in the UI:
using var saveContext = new AppDbContext();
IDataSet postSaveDataSet = EfCoreMergeAdapter.SaveData(saveContext, changeset);
You can look at "POCO DataSet" > "Quick Start" > "EF Core Integration – Recommended Lifecycle" page for complete end-to-end example.
Table of Content POCO DataSet API References
Business Process Programming in .Net
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