protected void cmdDisplay_Click(object sender, EventArgs e)
{
DatabaseComponent.DBUtil DB = new DatabaseComponent.DBUtil();
gridItems.DataSource = DB.GetItems(
Int32.Parse(lstCategories.SelectedItem.Value));
gridItems.DataBind();
pnlNew.Visible = true;
}
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DatabaseComponent.DBUtil DB = new DatabaseComponent.DBUtil();
lstCategories.DataSource = DB.GetCategories();
lstCategories.DataTextField = "Name";
lstCategories.DataValueField = "ID";
lstCategories.DataBind();
pnlNew.Visible = false;
}
}
protected void cmdAdd_Click(object sender, EventArgs e)
{
DatabaseComponent.DBUtil DB = new DatabaseComponent.DBUtil();
try
{
DB.AddItem(txtTitle.Text, txtDescription.Text,
Decimal.Parse(txtPrice.Text),
Int32.Parse(lstCategories.SelectedItem.Value));
gridItems.DataSource = DB.GetItems(
Int32.Parse(lstCategories.SelectedItem.Value));
gridItems.DataBind();
}
catch (FormatException err)
{
// An error occurs if the user has entered an
// invalid price (non-numeric characters).
// In this case, take no action.
// Another option is to add a validator control
// for the price text box to prevent invalid input.
}
}