private void btnClear_Click_1(object sender, EventArgs e)
{
txtISBN.Text = "";
txtName.Text = "";
txtPrice.Text = "";
txtQuantity.Text = "";
txtDesc.Text = "";
txtPrice.Text = "";
txtStatus.Text = "";
ListAuthors.ClearSelected();
ListCategory.ClearSelected();
cboPublisher.SelectedIndex = 0;
}
public UpdateBook(int ID)
{
InitializeComponent();
ChannelFactory <IBussinessLogic> chanel = new ChannelFactory <IBussinessLogic>("ClientEndPoint");
proxy = chanel.CreateChannel();
book = proxy.GetBookDataByID(ID);
ListAuthors.DataSource = proxy.GetAllBookAuthor();
ListAuthors.DisplayMember = "name";
ListAuthors.ValueMember = "id";
ListCategory.DataSource = proxy.GetBookAllCategory();
ListCategory.DisplayMember = "name";
ListCategory.ValueMember = "id";
cboPublisher.DataSource = proxy.getAllPublisher();
cboPublisher.DisplayMember = "name";
cboPublisher.ValueMember = "id";
ListAuthors.ClearSelected();
ListCategory.ClearSelected();
ListAuthors.SelectionMode = SelectionMode.MultiExtended;
ListCategory.SelectionMode = SelectionMode.MultiExtended;
this.MaximizeBox = false;
this.MinimizeBox = false;
}