Add project files.

ConstructorApp.BusinessLayer/Concrete/CompanyInfoVideoManager.cs

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+using ConstructorApp.BusinessLayer.Abstract;
+using ConstructorApp.DataAccessLayer.Abstract;
+using ConstructorApp.EntityLayer.Entities;
+
+namespace ConstructorApp.BusinessLayer.Concrete
+{
+    public class CompanyInfoVideoManager : ICompanyInfoVideoService
+    {
+        private readonly ICompanyInfoVideoDal _companyInfoVideoDal;
+
+        public CompanyInfoVideoManager(ICompanyInfoVideoDal companyInfoVideoDal)
+        {
+            _companyInfoVideoDal = companyInfoVideoDal;
+        }
+
+        public void TAdd(CompanyInfoVideo entity)
+        {
+            _companyInfoVideoDal.Add(entity);
+        }
+
+        public void TDelete(CompanyInfoVideo entity)
+        {
+           _companyInfoVideoDal.Delete(entity);
+        }
+
+        public CompanyInfoVideo TGetByID(int id)
+        {
+            return _companyInfoVideoDal.GetByID(id);
+        }
+
+        public List<CompanyInfoVideo> TGetListAll()
+        {
+            return _companyInfoVideoDal.GetListAll();
+        }
+
+        public void TUpdate(CompanyInfoVideo entity)
+        {
+            _companyInfoVideoDal.Update(entity);    
+        }
+    }
+}