protected void LinkButtonCreateOrEdit_Click(object sender, EventArgs e)
{
Category category;
int categoryId = 0;
BookLibraryEntities db = new BookLibraryEntities();
if(!String.IsNullOrEmpty(this.LabelCategoryId.Text))
{
categoryId = Convert.ToInt32(this.LabelCategoryId.Text);
category = db.Categories.FirstOrDefault(c => c.Id == categoryId);
}
else
{
category = new Category();
db.Categories.Add(category);
}
string categoryName = this.TextBoxCreateOrEdit.Text;
try
{
if(String.IsNullOrEmpty(categoryName))
{
throw new ArgumentException("Category name is required!");
}
category.Name = categoryName;
db.SaveChanges();
ErrorSuccessNotifier.AddInfoMessage("Category " + (categoryId == 0 ? "created!" : "edited!"));
ErrorSuccessNotifier.ShowAfterRedirect = true;
Response.Redirect("EditCategories.aspx", false);
}
catch(Exception ex)
{
ErrorSuccessNotifier.AddErrorMessage(ex);
}
}
protected void saveNewCategoryButton_Click(object sender, EventArgs e)
{
try
{
var name = this.newCategoryBox.Text;
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(
"The name of a category could not be null or white space");
}
LibrarySystemEntities context = new LibrarySystemEntities();
Category category = new Category
{
Name = name
};
context.Categories.Add(category);
context.SaveChanges();
this.categoriesGrid.PageIndex = 0;
this.newCategoryPanel.Visible = false;
this.newCategoryButton.Visible = true;
ErrorSuccessNotifier.AddSuccessMessage("Category was successfully added.");
}
catch (Exception ex)
{
ErrorSuccessNotifier.AddErrorMessage(ex);
}
}
