//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();
}
}
