habilitacion y deshabilitacion de botones en personal

personal.cs

@@ -17,8 +17,9 @@ namespace compabetov2
         public personal()
         {
             InitializeComponent();
-            llenarGrid();
+            llenarGrid();    
         }
+       
 
         private void label1_Click(object sender, EventArgs e)
         {
@@ -48,7 +49,6 @@ namespace compabetov2
 
         private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
         {
-
         }
 
         private void llenarGrid()
@@ -72,6 +72,7 @@ namespace compabetov2
                     empleado.fecha_nac, 
                     empleado.telefono);
             }
+            dataGridView1.Enabled = false;
         }
 
         private void personal_Load(object sender, EventArgs e)
@@ -81,12 +82,45 @@ namespace compabetov2
 
         private void button7_Click(object sender, EventArgs e)
         {
-
+            btnEditar.Enabled = true;
+            btnEliminar.Enabled = true;
+            dataGridView1.Enabled = true;
+            btnAgregar.Enabled = false;
         }
 
         private void button8_Click(object sender, EventArgs e)
         {
 
         }
+
+        private void dataGridView1_RowEnter(object sender, DataGridViewCellEventArgs e)
+        {
+            DataGridViewRow row = dataGridView1.Rows[e.RowIndex] as DataGridViewRow;
+            if(row.Cells[1].Value != null && row.Cells[0].Value != null)
+            {
+                
+                txtnombrepersonal.Text = row.Cells[1].Value.ToString();
+                txtapellidopersonal.Text = row.Cells[2].Value.ToString();
+                dtpfechapersonal.Text = row.Cells[3].Value.ToString();
+                cbestadopersonal.Text = row.Cells[4].Value.ToString();
+                txtcallepersonal.Text = row.Cells[5].Value.ToString();
+                txtcoloniapersonal.Text = row.Cells[6].Value.ToString();
+                txtcodigopersonal.Text = row.Cells[7].Value.ToString();
+                txtnoextpersonal.Text = row.Cells[8].Value.ToString();
+                txtnointpersonal.Text = row.Cells[9].Value.ToString();
+                txtreferenciapersonal.Text = row.Cells[10].Value.ToString();
+                dtpnacimientopersonal.Text = row.Cells[11].Value.ToString();
+                txttelefonopersonal.Text = row.Cells[12].Value.ToString();
+            }
+            
+        }
+
+        private void btnNuevo_Click(object sender, EventArgs e)
+        {
+            btnEditar.Enabled = false;
+            btnEliminar.Enabled = false;
+            btnAgregar.Enabled = true;
+            dataGridView1.Enabled = false;
+        }
     }
 }