private void btnAdd_Click(object sender, RoutedEventArgs e)
{
///////////////////////// VALIDATION OF THE USER INPUT //////////////////
if (CurrentItem == ItemType.Default)
{
GuiMsgs.Warning
("Please Choose the Item Type:" +
"\nBook or Journal!");
}
//if Base category is choosen
else if (cmbBaseCat.SelectedIndex < 0)
{
GuiMsgs.Warning("Please choose the Base Category!");
}
else if (!Validity.StringOK(txtName.Text))
{
GuiMsgs.Warning("Please Enter The Name of The Item!");
}
else if (dtPick.SelectedDate == null)
{
GuiMsgs.Warning("Please Select a Publishing Date!");
}
else
{
switch (CurrentItem)
{
case ItemType.Book:
if (!Validity.StringOK(txtAuthor.Text))
{
GuiMsgs.Warning("Please Enter The Author Name!");
}
else
{
CreateItem();
this.Close();
}
break;
case ItemType.Journal:
if (!Validity.StringOK(txtIssue.Text))
{
GuiMsgs.Warning("Please Enter The Issue Number!");
}
else if (!Validity.PositiveInteger(txtIssue.Text))
{
GuiMsgs.Warning("Please Enter the valid Issue Number!");
}
else //If All the fields are OK - create new Item and add him into the Library
{
CreateItem();
this.Close();
}
break;
}
}
///////////////////////// VALIDATION OF THE USER INPUT //////////////////
}
/// <summary>
/// Validation method that checks if all the fields are valid
/// before Update the Current Item
/// </summary>
/// <returns>true if the fields are OK and false if opposite</returns>
private bool FieldsValidForUpdate()
{
if (!Validity.StringOK(txtName.Text))
{
GuiMsgs.Warning("Please enter the Item Name!");
return(false);
}
else if (dtPick.SelectedDate == null)
{
GuiMsgs.Warning("Please Select the Publishing Date!");
return(false);
}
else
{
switch (CurrentItem.ItemType)
{
case "Book":
if (!Validity.StringOK(txtAuthor.Text))
{
GuiMsgs.Warning("Please Enter the Author Name!");
return(false);
}
break;
case "Journal":
if (!Validity.StringOK(txtIssue.Text))
{
GuiMsgs.Warning("Please Enter The Issue Number!");
return(false);
}
else if (!Validity.PositiveInteger(txtIssue.Text))
{
GuiMsgs.Warning("Please Enter the valid Issue Number!");
return(false);
}
break;
}
}
return(true);
}
//Event for Issue Search TextBox,
//Search for the Journal by It's Issue number
private void IssueSearch(object sender, TextChangedEventArgs e)
{
//if the the User inputs is not Positive integer -
//don't search, instead clear the TextBox contents
if (!Validity.PositiveInteger(txtIssue.Text))
{
txtIssue.Text = string.Empty;
}
//If we in the regular search mode (not multiply)
else if (!IsMultiSearch)
{
dataLib.ItemsSource =
mainLibrary.FindJournal(j => j.IssueNumber == int.Parse(txtIssue.Text));
}
//if the user deletes the text from issue search box,
//Show all the item in the library
if (string.IsNullOrWhiteSpace(txtIssue.Text))
{
RefreshDataGrid();
}
}