The data reader is incompatible. A member of the type, 'RoleId', does not have a corresponding column in the data reader with the same name

Question

Stored procedure works and deletes what I want but I still get this error after deleting:

The data reader is incompatible with the specified 'AMSIdentity.Models.RemoveRoleFromUserViewModel'. A member of the type, 'RoleId', does not have a corresponding column in the data reader with the same name.

I need to run the code without this error in the above

This code using ASP.NET MVC 5 and EF6 code first approach; I tried to use this code but always throws this error after delete.

This is the action method that I use

public ActionResult RemoveRoleFromUserConfirmed(string UserName, string RoleId)
{
        if (UserName == null && RoleId == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }

        SqlParameter param1 = new SqlParameter("@RoleId", RoleId);
        SqlParameter param2= new SqlParameter("@UserName", UserName);

        var remove = Identitydb.Database.SqlQuery<RemoveRoleFromUserViewModel>("admin.sp_RemoveUserFromRole @RoleId, @UserName",
            ((ICloneable)param1).Clone(),
            ((ICloneable)param2).Clone()).ToArray().ToList().FirstOrDefault();

        if (remove == null)
        {
            return HttpNotFound();
        }

        return RedirectToAction("Roles");
}

This is the view model that I use :

public class RemoveRoleFromUserViewModel
{
    [Key]
    [DisplayName("Role Id")]
    public string RoleId { get; set; }

    [DisplayName("Username")]
    public string UserName { get; set; }
}

This is the stored procedure code:

ALTER PROCEDURE [Admin].[sp_RemoveUserFromRole] 
    @RoleId NVARCHAR(50), 
    @UserName NVARCHAR(50)
AS
BEGIN
    DELETE FROM AspNetUserRoles 
    WHERE UserId = (SELECT Id 
                    FROM AspNetUsers 
                    WHERE UserName = @UserName) 
      AND RoleId = @RoleId 
END

I expect that this code will delete role from the specific user.

Answer 1

Hi All,

I got the answer from @Jeroen Mostert, The solution is to use the (ExecuteSqlCommand) rather than (SqlQuery) because I will never return data, I only execute the stored procedure with two parameters.

• This is the answer

SqlParameter param1 = new SqlParameter("@RoleId", RoleId);
SqlParameter param2= new SqlParameter("@UserName", UserName);

//I change this line from SqlQuery to ExecuteSqlCommand
var remove = Identitydb.Database.ExecuteSqlCommand("admin.sp_RemoveUserFromRole @RoleId, @UserName", param1, param2);

Thank you very much @Jeroen Mostert.
Regards,
Ali Mosaad
Software Developer