C#•3y ago

❔ asp.net mvc database connection not working

someone help please am trying to connect database mysql with asp.net mvc app but am encountering this error, am using .net cli
C:\Users\Faiza Abdella\Desktop\mvcdotnet\faizamvc\Data\dbcontexts.cs(29,34): error CS0246: The type or namespace name '
ApplicationDbContext' could not be found (are you missing a using directive or an assembly reference?) [C:\Users\Faiza
Abdella\Desktop\mvcdotnet\faizamvc\faizamvc.csproj]

faizamvc.csproj file
<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.13" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.13">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

</Project>

faizamvc.csproj file
<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.13" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.13">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

</Project>

faizamvc.csproj file
<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.13" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.13">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

</Project>

faizamvc.csproj file
<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.13" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.13">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
  </ItemGroup>

</Project>

dbcontext.cs file
using Microsoft.EntityFrameworkCore;

public class YourDbContext : DbContext
{
    public YourDbContext(DbContextOptions<YourDbContext> options) : base(options)
    {
    }

    // DbSet properties representing your database tables
    public DbSet<Product> Products { get; set; }
    public DbSet<Order> Orders { get; set; }
}
public class Product
{
    public int ProductId { get; set; }
    public string? Name { get; set; }
    // Other properties
}
public class Order
{
    public int OrderId { get; set; }
    public string? CustomerName { get; set; }
    // Other properties
}

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
        => services.AddDbContext<ApplicationDbContext>();
}

dbcontext.cs file
using Microsoft.EntityFrameworkCore;

public class YourDbContext : DbContext
{
    public YourDbContext(DbContextOptions<YourDbContext> options) : base(options)
    {
    }

    // DbSet properties representing your database tables
    public DbSet<Product> Products { get; set; }
    public DbSet<Order> Orders { get; set; }
}
public class Product
{
    public int ProductId { get; set; }
    public string? Name { get; set; }
    // Other properties
}
public class Order
{
    public int OrderId { get; set; }
    public string? CustomerName { get; set; }
    // Other properties
}

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
        => services.AddDbContext<ApplicationDbContext>();
}

dbcontext.cs file
using Microsoft.EntityFrameworkCore;

public class YourDbContext : DbContext
{
    public YourDbContext(DbContextOptions<YourDbContext> options) : base(options)
    {
    }

    // DbSet properties representing your database tables
    public DbSet<Product> Products { get; set; }
    public DbSet<Order> Orders { get; set; }
}
public class Product
{
    public int ProductId { get; set; }
    public string? Name { get; set; }
    // Other properties
}
public class Order
{
    public int OrderId { get; set; }
    public string? CustomerName { get; set; }
    // Other properties
}

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
        => services.AddDbContext<ApplicationDbContext>();
}

dbcontext.cs file
using Microsoft.EntityFrameworkCore;

public class YourDbContext : DbContext
{
    public YourDbContext(DbContextOptions<YourDbContext> options) : base(options)
    {
    }

    // DbSet properties representing your database tables
    public DbSet<Product> Products { get; set; }
    public DbSet<Order> Orders { get; set; }
}
public class Product
{
    public int ProductId { get; set; }
    public string? Name { get; set; }
    // Other properties
}
public class Order
{
    public int OrderId { get; set; }
    public string? CustomerName { get; set; }
    // Other properties
}

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
        => services.AddDbContext<ApplicationDbContext>();
}

❔ asp.net mvc database connection not working

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