diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContract.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContract.cs
index 2cf5d43..b44ed73 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContract.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContract.cs
@@ -15,11 +15,11 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             _contractRepository = contractRepository ?? throw new ArgumentNullException(nameof(contractRepository));
 
             comboBoxContractCustomerId.DataSource = customerRepository.ReadCustomers();
-            comboBoxContractCustomerId.DisplayMember = "Name";
+            comboBoxContractCustomerId.DisplayMember = "FullName";
             comboBoxContractCustomerId.ValueMember = "Id";
 
             comboBoxContractExecutorId.DataSource = executorRepository.ReadExecutors();
-            comboBoxContractExecutorId.DisplayMember = "Name";
+            comboBoxContractExecutorId.DisplayMember = "FullName";
             comboBoxContractExecutorId.ValueMember = "Id";
 
             ColumnServiceDescription.DataSource = serviceRepository.ReadServices();
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContractReport.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContractReport.cs
index c45c1d4..fb99dbe 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContractReport.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContractReport.cs
@@ -14,7 +14,7 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             _container = container ?? throw new ArgumentNullException(nameof(container));
 
             comboBoxCutomerId.DataSource = customerRepository.ReadCustomers();
-            comboBoxCutomerId.DisplayMember = "Name";
+            comboBoxCutomerId.DisplayMember = "FullName";
             comboBoxCutomerId.ValueMember = "Id";
         }
 
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContracts.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContracts.cs
index abce63a..8bf9ffe 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContracts.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormContracts.cs
@@ -60,7 +60,11 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _contractRepository.ReadContracts();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _contractRepository.ReadContracts();
+            dataGridViewData.Columns["Id"].Visible = false;
+        }
 
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReview.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReview.cs
index a12334a..0b29a67 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReview.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReview.cs
@@ -15,11 +15,11 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
                 throw new ArgumentNullException(nameof(customerExecutorReviewRepository));
 
             comboBoxCustomerExecutorReviewCustomerId.DataSource = customerRepository.ReadCustomers();
-            comboBoxCustomerExecutorReviewCustomerId.DisplayMember = "Name";
+            comboBoxCustomerExecutorReviewCustomerId.DisplayMember = "FullName";
             comboBoxCustomerExecutorReviewCustomerId.ValueMember = "Id";
 
             comboBoxCustomerExecutorReviewExecutorId.DataSource = executorRepository.ReadExecutors();
-            comboBoxCustomerExecutorReviewExecutorId.DisplayMember = "Name";
+            comboBoxCustomerExecutorReviewExecutorId.DisplayMember = "FullName";
             comboBoxCustomerExecutorReviewExecutorId.ValueMember = "Id";
         }
 
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReviews.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReviews.cs
index 27d60c1..141ecbb 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReviews.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomerExecutorReviews.cs
@@ -41,6 +41,10 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _customerExecutorReviewRepository.ReadCustomerExecutorReviews();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _customerExecutorReviewRepository.ReadCustomerExecutorReviews();
+            dataGridViewData.Columns["Id"].Visible = false;
+        }
     }
 }
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomers.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomers.cs
index ebceb67..c72b9ab 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomers.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormCustomers.cs
@@ -78,7 +78,12 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _customerRepository.ReadCustomers();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _customerRepository.ReadCustomers();
+            dataGridViewData.Columns["Id"].Visible = false;
+            dataGridViewData.Columns["FullName"].Visible = false;
+        }
 
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormExecutors.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormExecutors.cs
index f4b93ba..361e943 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormExecutors.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormExecutors.cs
@@ -78,7 +78,12 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _executorRepository.ReadExecutors();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _executorRepository.ReadExecutors();
+            dataGridViewData.Columns["Id"].Visible = false;
+            dataGridViewData.Columns["FullName"].Visible = false;
+        }
 
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {
diff --git a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormServices.cs b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormServices.cs
index 60f8f62..c473165 100644
--- a/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormServices.cs
+++ b/PIbd-23_Gutorov_I.A._IT-Company/Forms/FormServices.cs
@@ -78,7 +78,11 @@ namespace PIbd_23_Gutorov_I.A._IT_Company.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _serviceRepository.ReadServices();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _serviceRepository.ReadServices();
+            dataGridViewData.Columns["Id"].Visible = false;
+        }
 
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {