how to map back to get the actual sql table column name apart from model in MVC?

Question

I am mapping my table column name to generic way in to use them in model. like:

        public UserEntityMapper()
        {
            ToTable(\"tbl_User\")         


        

Answer 1

Working on another problem I found a much better way to achieve this. I think this wasn't even possible when I wrote the first answer.

To find a store name starting from a CLR type name, we have to access the store-CLR space of the EDM model. That's where mappings between classes and properties on the one hand, and tables and column on the other hand are found. Knowing this it's just a matter of carefully dissecting the content of a deep tree of objects to get the desired results:

public IEnumerable> GetTableAndColumns()
{
    var entityContainerMappings = (this as IObjectContextAdapter).ObjectContext
        .MetadataWorkspace.GetItems(DataSpace.CSSpace)
        .OfType();

    var entityTypeMappings = entityContainerMappings
        .SelectMany(m => m.EntitySetMappings
            .Where(esm => esm.EntitySet.ElementType.Name == typeof(TEntity).Name))
        .SelectMany(esm => esm.EntityTypeMappings).ToArray();

    var propertyMappings = (from etm in entityTypeMappings
        from prop in etm.EntityType.Properties
        join pm in entityTypeMappings.SelectMany(etm => etm.Fragments)
            .SelectMany(mf => mf.PropertyMappings)
            .OfType()
            on prop.Name equals pm.Property.Name
        select new {etm, prop, pm}
        );

    return propertyMappings.Select(x => Tuple.Create(x.etm.EntitySetMapping.EntitySet.Name, x.pm.Column.Name, x.prop.DeclaringType.Name, x.prop.Name));
}

This is a method inside a DbContext subtype. For the specified type, it returns tuples containing

• Table Name
• Column Name
• CLR class name
• Property name

For istance:

Item1     Item2            Item3    Item4
===================================================
Products  ProductId        Product  Id
Products  ProductName      Product  Name
Products  QuantityPerUnit  Product  QuantityPerUnit
Products  UnitPrice        Product  UnitPrice
Products  StartDate        Product  StartDate
Products  RowVersion       Product  RowVersion