从Page_Load到One_Method，从One_Method到Another_Method

嘿，我用我的完整代码再问一个问题，因为我真的陷入了这一点。当页面加载时，面板上填充了从数据库中获取的书籍类别。此类别也是链接按钮。当我单击一个类别时，会在下面创建一个表格，其中包含该类别上的所有书籍。在该表中，第一个单元格填充了书籍的标题，该标题也是链接按钮。我只想在单击我时，该书的标题链接按钮以触发book_Details函数这样页面现在将只显示我选择的书。

取而代之的是，每当我单击书籍的标题链接按钮页面时，都会从 0 再次加载。

标记为：

<asp:Content ID="Content3" ContentPlaceHolderID="MainContent" runat="server">
<div style="position: relative; top: 5%; left: 5%;">
    <asp:Panel ID="MyPanel" runat="server"></asp:Panel>
</div>
<asp:MultiView ID="MultiView2" runat="server">
    <asp:View ID="View1" runat="server">
        <div style="overflow: auto; height: 400px;">
            <asp:Table ID="ProductTBL" runat="server" BorderColor="Black" BorderStyle="Double" CellPadding="5" CellSpacing="5" BorderWidth="1px">
            </asp:Table>
        </div>
    </asp:View>
    <asp:View ID="View2" runat="server">
        <asp:Table ID="detail_TBL" runat="server" BorderColor="Black" BorderStyle="Double" CellPadding="5" CellSpacing="5" BorderWidth="1px"></asp:Table>
    </asp:View>
</asp:MultiView>
</asp:Content>

代码隐藏是：

protected void Page_Load(object sender, EventArgs e)
{
    String conString = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source =" +
                Server.MapPath("~/e-bookstoredb.accdb");
    using (OleDbConnection connection = new OleDbConnection(conString))
    {
        connection.Open();
        ыtring query = "SELECT * FROM category";
        using (OleDbCommand cmd = new OleDbCommand(query, connection))
        {
            OleDbDataReader reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                string literal = (string)reader["Name"];
                LinkButton lnk_button = new LinkButton();
                lnk_button.Text = literal;
                lnk_button.ID = "cat_B" + reader["ID"].ToString();
                lnk_button.CommandArgument = reader["ID"].ToString();
                lnk_button.CommandName = reader["ID"].ToString();
                lnk_button.Command += new CommandEventHandler(books_Show);
                MyPanel.Controls.Add(lnk_button);
                MyPanel.Controls.Add(new LiteralControl("</br>"));
            }
            reader.Close();
        }
        connection.Close();
    }
}
protected void books_Show(object sender, EventArgs e)
{
    LinkButton lnk = sender as LinkButton;
    string cat = lnk.CommandArgument;
    MultiView2.ActiveViewIndex = 0;
    string ConStr = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source =" + Server.MapPath("~/e-bookstoredb.accdb");
    using (OleDbConnection con = new OleDbConnection(ConStr))
    {
        con.Open();
        string query = "SELECT * FROM product WHERE category = @cat";
        using (OleDbCommand cmd = new OleDbCommand(query, con))
        {
            cmd.Parameters.AddWithValue("@cat", cat);
            OleDbDataReader reader = cmd.ExecuteReader();
            TableCell cell;
            TableRow row = new TableRow();
            TableCell titleCell = new TableCell();
            titleCell.Text = "Τίτλος";
            TableCell desCell = new TableCell();
            desCell.Text = "Περιγραφή";
            TableCell priceCell = new TableCell();
            priceCell.Text = "Τιμή";
            row.Cells.Add(titleCell);
            row.Cells.Add(desCell);
            row.Cells.Add(priceCell);
            ProductTBL.Rows.Add(row);
            LinkButton book_button;
            while (reader.Read())
            {
                book_button = new LinkButton();
                book_button.ID = "book" + reader["ID"].ToString();
                book_button.Text = (string)reader["Title"];
                book_button.CommandArgument = (string) reader["Title"];
                book_button.CommandName = "cmd" + reader["ID"].ToString();
                book_button.Command += new CommandEventHandler(book_Details);
                row = new TableRow();
                cell = new TableCell();
                cell.Controls.Add(book_button);
                row.Cells.Add(cell);
                cell = new TableCell();
                cell.Text = (string)reader["Description"];
                row.Cells.Add(cell);
                cell = new TableCell();
                cell.Text = reader["price"].ToString()+"€";
                row.Cells.Add(cell);
                ProductTBL.Rows.Add(row);
            }
            reader.Close();
        }
        con.Close();
    }
}
protected void book_Details(object sender, EventArgs e)
{
    MultiView2.ActiveViewIndex = 1;
    LinkButton lnk = sender as LinkButton;
    String bookTitle = lnk.CommandArgument;
    //...And then I just create a table to show only the book user selected 
    //...this table gets filled buy this query = " SELECT * FROM product WHERE Title=@bookTitle   
} 

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        // Your Page_Load logic goes here
    }
}