protected void gvData_RowDelete(object sender, GridViewDeleteEventArgs e) // Same as the above comment
{
ltErr.Text = string.Empty;
GridViewRow gvRow = gvData.Rows[e.RowIndex];
int petId = Convert.ToInt32(((HiddenField)gvRow.FindControl("petId")).Value);
try
{
using (VetSystemEntities db = new VetSystemEntities())
{
Owner petOwner = db.Pets // List of pet owners
.AsEnumerable()
.Where(x => x.Id == petId)
.Select(x => x.Owner)
.First();
db.Owners.Remove(petOwner);
Pet pet = db.Pets // List of pets
.AsEnumerable()
.Where(x => x.Id == petId)
.First();
db.Pets.Remove(pet);
db.SaveChanges();
gvData.EditIndex = -1;
ShowDataInGrid();
}
}
catch (Exception ex) { ltErr.Text = "Error: " + ex; }
}
protected void AddRow(object sender, EventArgs e)
{
using (VetSystemEntities db = new VetSystemEntities()) // Some of the fields in the database can not be NULL, so put random stuff in them (best comment ever)
{
int ownerId = db.Pets
.OrderByDescending(x => x.Owner.Id)
.First()
.Id + 1;
db.Owners.Add(new Owner {
Id = ownerId, Name = "Owner name", Phone = "+359899121343", Email = "*****@*****.**", Password = "******"
});
db.Pets.Add(new Pet {
Name = "Pet name", OwnerID = ownerId, AnimalTypeID = 1, AnimalSubTypeID = 1
});
db.SaveChanges();
ShowDataInGrid();
}
}
// Well I guess there isn't a function starting with O
public void ShowDataInGrid() // Visualizes parts of the database in grid view in the webpage
{
try
{
using (VetSystemEntities db = new VetSystemEntities())
{
DbSet <Pet> pets = db.Pets;
List <AnimalType> animalTypes = db.AnimalTypes
.GroupBy(x => x.Name)
.Select(grp => grp.FirstOrDefault())
.ToList();
foreach (var animalType in animalTypes)
{
filterList.Items.Add(animalType.Name);
filterList.Items.FindByValue(animalType.Name).Value = animalType.Name;
}
gvData.DataSource = pets.ToList();
gvData.DataBind();
}
}
catch (Exception ex) { ltErr.Text = "Error: " + ex; }
}
protected void gvData_Sorting(object sender, GridViewSortEventArgs e)
{
if (e.SortExpression == (string)ViewState["SortColumn"])
{
// We are resorting the same column, so flip the sort direction
e.SortDirection = ((SortDirection)ViewState["SortColumnDirection"] == SortDirection.Ascending) ? SortDirection.Descending : SortDirection.Ascending;
}
// Apply the sort
using (VetSystemEntities db = new VetSystemEntities())
{
var pets = db.Pets.ToList();
switch (e.SortExpression)
{
case "Name":
gvData.DataSource = e.SortDirection == SortDirection.Ascending ? pets.OrderBy(x => x.Name) : pets.OrderByDescending(x => x.Name);
break;
case "AnimalType.Name":
gvData.DataSource = e.SortDirection == SortDirection.Ascending ? pets.OrderBy(x => x.AnimalType.Name) : pets.OrderByDescending(x => x.AnimalType.Name);
break;
case "AnimalSubType.Name":
gvData.DataSource = e.SortDirection == SortDirection.Ascending ? pets.OrderBy(x => x.AnimalSubType.Name) : pets.OrderByDescending(x => x.AnimalSubType.Name);
break;
case "Owner.Name":
gvData.DataSource = e.SortDirection == SortDirection.Ascending ? pets.OrderBy(x => x.Owner.Name) : pets.OrderByDescending(x => x.Owner.Name);
break;
case "Owner.Email":
gvData.DataSource = e.SortDirection == SortDirection.Ascending ? pets.OrderBy(x => x.Owner.Email) : pets.OrderByDescending(x => x.Owner.Email);
break;
}
gvData.DataBind();
}
ViewState["SortColumn"] = e.SortExpression;
ViewState["SortColumnDirection"] = e.SortDirection;
}
protected void FilterGridView(object sender, EventArgs e)
{
try
{
using (VetSystemEntities db = new VetSystemEntities())
{
List <Pet> filteredPets;
if (filterList.SelectedValue != "Not applied")
{
filteredPets = db.Pets
.Where(x => x.AnimalType.Name == filterList.SelectedValue)
.Select(x => x)
.ToList();
}
else
{
filteredPets = db.Pets.ToList();
}
gvData.DataSource = filteredPets;
gvData.DataBind(); // Binds the return of the LINQ to the webpage grid view
}
}
catch (Exception ex) { ltErr.Text = "Error: " + ex; }
}
protected void gvData_RowUpdate(object sender, GridViewUpdateEventArgs e)
{
ltErr.Text = string.Empty;
GridViewRow gvRow = gvData.Rows[e.RowIndex];
// These are horrible - HELP
int petId = Convert.ToInt32(((HiddenField)gvRow.FindControl("petId")).Value);
string txtPetName = ((TextBox)gvRow.Cells[1].Controls[0]).Text;
string txtAnimalType = ((TextBox)gvRow.Cells[2].Controls[0]).Text;
string txtAnimalSubType = ((TextBox)gvRow.Cells[3].Controls[0]).Text;
string txtOwner = ((TextBox)gvRow.Cells[4].Controls[0]).Text;
string txtOwnerEmail = ((TextBox)gvRow.Cells[5].Controls[0]).Text;
try
{
using (VetSystemEntities db = new VetSystemEntities())
{
List <Pet> pets = db.Pets // List of pets read from the db
.AsEnumerable()
.Where(x => x.Id == petId)
.ToList();
pets.ForEach(x => x.Name = txtPetName != "" && x.Name != txtPetName ? txtPetName : x.Name); // Update pet names
int animalTypeIndex = 0;
List <AnimalType> animalTypes = db.Pets // List of animal types read from the db
.Select(x => x.AnimalType)
.ToList();
foreach (var animalType in animalTypes)
{
if (animalType.Name.ToLower() == txtAnimalType.ToLower()) // Check if the value exists in the db (case insensitive)
{
animalTypeIndex = animalType.Id;
break;
}
}
if (animalTypeIndex == 0 && txtAnimalType != "") // If it doesn't ***
{
animalTypeIndex = db.AnimalTypes
.OrderByDescending(x => x.Id)
.First()
.Id + 1;
db.AnimalTypes.Add(new AnimalType {
Id = animalTypeIndex, Name = txtAnimalType
}); // *** add it
}
pets.ToList().ForEach(x => x.AnimalTypeID = txtAnimalType != "" ? animalTypeIndex : x.AnimalTypeID); // Update pet's animal type id (in Pets table)
int animalSubTypeIndex = 0;
List <AnimalSubType> animalSubTypes = db.Pets // List of animal subtypes read from the db
.Select(x => x.AnimalSubType)
.ToList();
foreach (var animalSubType in animalSubTypes)
{
if (animalSubType.Name.ToLower() == txtAnimalSubType.ToLower()) // Check if the value exists in the db (case insensitive)
{
animalSubTypeIndex = animalSubType.Id;
break;
}
}
if (animalSubTypeIndex == 0 && txtAnimalSubType != "") // If it doesn't ***
{
int parentId = db.AnimalTypes
.Where(x => x.Name.ToLower() == txtAnimalType.ToLower())
.OrderByDescending(x => x.Id)
.Select(x => x.Id)
.First();
animalSubTypeIndex = db.AnimalSubTypes
.OrderByDescending(x => x.Id)
.First()
.Id + 1;
db.AnimalSubTypes.Add(new AnimalSubType {
Id = animalSubTypeIndex, Name = txtAnimalSubType, ParentAnimal = parentId
}); // *** add it
}
pets.ToList().ForEach(x => x.AnimalSubTypeID = txtAnimalSubType != "" ? animalSubTypeIndex : x.AnimalSubTypeID);
List <Owner> petOwners = db.Pets // List of pet types read from the db
.AsEnumerable()
.Where(x => x.Id == petId)
.Select(x => x.Owner)
.ToList();
petOwners.ToList().ForEach(x => x.Name = txtOwner != "" && x.Name != txtOwner ? txtOwner : x.Name);
petOwners.ToList().ForEach(x => x.Email = txtOwnerEmail != "" && x.Email != txtOwnerEmail ? txtOwnerEmail : x.Email);
db.SaveChanges();
gvData.EditIndex = -1;
ShowDataInGrid(); // 'Redraw' the grid view
}
}
catch (Exception ex) { ltErr.Text = "Error: " + ex; }
}
