How to get Table Name of mapped entity in Entity Framework Core

You can Use this static class

public static class AttributeReader
{
    //Get DB Table Name
    public static string GetTableName<T>(DbContext context) where T : class
    {
        // We need dbcontext to access the models
        var models = context.Model;

        // Get all the entity types information
        var entityTypes = models.GetEntityTypes();

        // T is Name of class
        var entityTypeOfT = entityTypes.First(t => t.ClrType == typeof(T));

        var tableNameAnnotation = entityTypeOfT.GetAnnotation("Relational:TableName");
        var TableName = tableNameAnnotation.Value.ToString();
        return TableName;
    }

}

For example, we have Person class that entity name in database is People, we can get people from person class.

var TblName= AttributeReader.GetTableName<YourModel>(YourContext);

EF Core 5 version

EF Core 5 "now allows an entity type to be mapped to both a table and a view simultaneously".

I don't fully understand this, but it adds complications to finding table names.

For my use case I actually wanted the name of a view, so by checking for TableName and ViewName I could throw an error if the entity supplied was for the wrong type.

var entityType = typeof(Customer);
var modelEntityType = context.Model.FindEntityType(entityType);

string tableName = modelEntityType.GetSchemaQualifiedTableName();
string viewName = modelEntityType.GetSchemaQualifiedViewName();

if (tableName != null) 
{
   throw new Exception("The Entity " + entityName + " represents a table and not a view");
}

Following on from Simon's answer. In EF Core Version 5x, it is possible to use Microsoft extension methods. Created a DbContext helper extension method:

using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;

public static class EfCoreExtensions
{
   public static string GetSchemaQualifiedTableName(this DbContext context, Type entityType)
   {
      IEntityType et = context.Model.FindEntityType(entityType);
      //what to do here, entity could be both view and table!?
      //string viewName = et.GetSchemaQualifiedViewName();
      return et.GetSchemaQualifiedTableName();
   }
}

Example of use like this:

  string tableName = _dbContext.GetSchemaQualifiedTableName(typeof(SomeEntity));

The MS extension methods are housed in the class:

Microsoft.EntityFrameworkCore.RelationalEntityTypeExtensions

Referenced using Nuget

<PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="5.0.4" />

DbSet Extension Method to Get Schema Name

Following on from Rax's extension method, you can write an extension method straight off of a DBSet as per below:

    /// <summary>
    /// Gets the Schema Table name for the DbSet.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="dbSet"></param>
    /// <returns></returns>
    public static string GetTableSchemaName<T>(this DbSet<T> dbSet) where T : class
    {
        var context = dbSet.GetService<ICurrentDbContext>().Context;
        var entityType = typeof(T);
        var m = context.Model.FindEntityType(entityType);

        return m.GetSchemaQualifiedTableName();
    }

Used like this:

var context = new SystemContext();
var name = context.SystemTable.GetTableSchemaName();