C# (CSharp) Userhelp.Lend_num示例

示例#1

 private void button2_Click(object sender, EventArgs e)
 {
     if (Userhelp.Lend_num() > 0)
     {
         if (Bookhelp.Have_book(click_book))
         {
             if (Bookhelp.LendBook(click_book) && Userhelp.User_lend())
             {
                 MessageBox.Show("借书成功！");
                 Userhelp.Record_Lend(click_book);
             }
             else
             {
                 MessageBox.Show("借书失败！");
             }
         }
         else
         {
             MessageBox.Show("此书余量不足！");
         }
     }
     else
     {
         MessageBox.Show("可借次数不足！");
     }
 }

示例#2

 public Back_Book()
 {
     InitializeComponent();
     init_grid();
     count         = Userhelp.Lend_num();
     name.Text     = Userhelp.ruid;
     lend_num.Text = count.ToString();
 }

示例#3

 private void button1_Click(object sender, EventArgs e)
 {
     if (!sernum.Equals(""))
     {
         if (Userhelp.Back_book(sernum))
         {
             Userhelp.update_ustate();
             bookcount = Bookhelp.BookNum(bookid);
             bookcount++;
             Bookhelp.UpdateBook_lend(bookid, bookcount.ToString());
             MessageBox.Show("还书成功！");
             init_grid();
             lend_num.Text = Userhelp.Lend_num().ToString();
         }
         else
         {
             MessageBox.Show("本书已归还！请勿重复操作！");
         }
     }
     else
     {
         MessageBox.Show("没有选择的书目！");
     }
 }