?using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class showmessage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            databindhao();
        }
    }
    private void databindhao()
    {
        DataSet ds = db.sel();
        PagedDataSource fy = new PagedDataSource();
        fy.AllowPaging = true;
        fy.CurrentPageIndex = int.Parse(lbldq.Text)-1;
        fy.PageSize = 3;
        fy.DataSource = ds.Tables[0].DefaultView;

        DataList1.DataSource = fy;
        DataList1.DataBind();
        lblsum.Text = fy.PageCount.ToString();
    }
    protected void imgsy_Click(object sender, ImageClickEventArgs e)
    {
        this.imgpro.Enabled = false;
        this.imgsy.Enabled = false;
        this.imgnext.Enabled = true;
        this.imgmo.Enabled = true;
        this.lbldq.Text = "1";
        databindhao();
    }
    protected void imgnext_Click(object sender, ImageClickEventArgs e)
    {
        int num = int.Parse(this.lbldq.Text) + 1;
        this.imgpro.Enabled = true;
        this.imgsy.Enabled = true;
        if (num == int.Parse(this.lblsum.Text))
        {
            this.imgnext.Enabled = false;
            this.imgmo.Enabled = false;
        }
        this.lbldq.Text = num.ToString();
        databindhao();

    }
    protected void imgpro_Click(object sender, ImageClickEventArgs e)
    {
        int num = int.Parse(this.lbldq.Text) - 1;
        this.imgnext.Enabled = true;
        this.imgmo.Enabled = true;
        if (num == 1)
        {
            this.imgpro.Enabled = false;
            this.imgsy.Enabled = false;
        }
        this.lbldq.Text = num.ToString();
        databindhao();
    }
    protected void imgmo_Click(object sender, ImageClickEventArgs e)
    {
        this.imgpro.Enabled = true;
        this.imgmo.Enabled = false;
        this.imgnext.Enabled = false;
        this.imgsy.Enabled = true;
        this.lbldq.Text = this.lblsum.Text;
        databindhao();
    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {

        try
        {
            if (int.Parse(this.lblsum.Text) < int.Parse(this.ye.Text))
            {
                Response.Write("<script>alert('請輸入正確的范圍！')</script>");
            }
            else
            {
                this.lbldq.Text = this.ye.Text;
                databindhao();
                if (this.lbldq.Text.Equals(this.lblsum.Text))
                {
                    this.imgnext.Enabled = false;
                    this.imgpro.Enabled = false;
                    this.imgmo.Enabled = false;
                }
                else
                {
                    this.imgnext.Enabled = true;
                    this.imgpro.Enabled = true;
                    this.imgmo.Enabled = true;
                }
                if (this.lbldq.Text.Equals("1"))
                {
                    this.imgpro.Enabled = false;
                    this.imgsy.Enabled = false;
                }
                else
                {
                    this.imgpro.Enabled = true;
                    this.imgsy.Enabled = true;
                }
            }
        }
        catch (Exception)
        {
            Response.Write("<script>alert('請輸入正確信息！')</script>");
        }
    }
}