private Task <List <Author> > SearchAuthors(AuthorSearchForm authorSearchForm)
{
return(Task.Run(() => {
IQueryable <Author> authorIQuer = _db.Authors;
List <Author> searchedResult = new List <Author>();
if (!string.IsNullOrWhiteSpace(authorSearchForm.textBoxSearchFirstName.Text))
{
authorIQuer = authorIQuer.Where(p => p.FirstName.Contains(authorSearchForm.textBoxSearchFirstName.Text));
}
if (!string.IsNullOrWhiteSpace(authorSearchForm.textBoxSearchSecondName.Text))
{
authorIQuer = authorIQuer.Where(p => p.SecondName.Contains(authorSearchForm.textBoxSearchSecondName.Text));
}
DateTime birthDate = DateTime.Now;
if (!string.IsNullOrWhiteSpace(authorSearchForm.textBoxSearchBirth.Text) &&
DateTime.TryParse(authorSearchForm.textBoxSearchBirth.Text, out birthDate))
{
authorIQuer = authorIQuer.Where(p => p.BirthDate == birthDate);
}
searchedResult.AddRange(authorIQuer.ToList <Author>());
return searchedResult;
}));
}
private async void btnAuthorSearch_Click(object sender, EventArgs e)
{
AuthorSearchForm authorSearchForm = new AuthorSearchForm();
DialogResult result = authorSearchForm.ShowDialog(this);
if (result == DialogResult.Cancel)
{
return;
}
SearchedAuthors.Clear();
SearchedAuthors = await SearchAuthors(authorSearchForm);
bindingSourceAuthorSearch.DataSource = SearchedAuthors;
dataGridViewAuthors.DataSource = bindingSourceAuthorSearch;
}