private void frmUpdateBook_Load(object sender, EventArgs e)
{
//GET DATATABLE FROM DATABASE
BookDTB = bd.GetBookTable().Tables[0];
BookTypeDTB = bd.GetBookTypeTable().Tables[0];
PublisherDTB = bd.GetPublisherTable().Tables[0];
AuthorDTB = bd.GetAuthorTable().Tables[0];
SuggestDTB = nb.GetSuggestTable().Tables[0];
//SET DATASOURCE TO DATAGRIDVIEW
dgvBook.DataSource = BookDTB;
dgvBookType.DataSource = BookTypeDTB;
dgvPublisher.DataSource = PublisherDTB;
dgvSuggestList.DataSource = SuggestDTB;
dgvSuggestColumnsDelete();
//COMBOBOX DATA
GetSourceCbb();
//TEXTBOX BINDING
TXTBookDataBindings();
TXTBookTypeDataBindings();
TXTPublisherDataBindings();
TXTSuggestDataBindings();
//SET TEXTBOX IS READONLY
TXTBookSetReadOnly();
TXTBookTypeSetReadOnly();
TXTPublisherSetReadOnly();
TXTSuggestSetReadOnly();
}