Question

C# 求高手详细解释每一段代码 在线等 每一段

namespace 网上订餐系统.菜单
{
public partial class List : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
int pageSize=5 ;
int page;
int scid ;
int.TryParse(Request.QueryString["p"], out page);
int.TryParse(Request.QueryString["Scid"], out scid);

if (page <= 0)
{
page = 1;
}

SqlServer db = new SqlServer();

string condition = " 1=1 ";
if (scid > 0)
{
condition += " and Scid=@Scid";
db.AddSqlParameter("@Scid", scid);

db.SQL = "select 种类 from 菜分类表 where Scid=@Scid";
this.Literal系列名称.Text = (string)db.ExcuteScalar();
}

else
{
this.Literal系列名称.Text = "浏览菜单";
}

if (!string.IsNullOrEmpty(Request.QueryString["key"]))
{
condition += " and 菜名 like '%'+@key+'%'";
db.AddSqlParameter("@key", Request.QueryString["key"]);

this.Literal系列名称.Text += " > " + Request.QueryString["key"];
}

int recordCount;
DataTable dt = db.GetPagingInfo("菜单表", "*", condition,"cID desc" , page, pageSize, out recordCount);
this.DataList菜色. DataSource = dt; //告诉rptList控件,它要显示的数据来从哪儿
DataList菜色.DataBind();
this.PagingBar1.CurrentPage = page;

Answer 1

这是分页（每页5行）显示从数据库中模糊查询取出的菜单

追问

每句都可以帮我注释下吗 谢了

追答

每行都注释非常之别扭，也难看。字数太多，只好传文件了

 

追问

this.PagingBar1.CurrentPage = page;
this.PagingBar1.PageSize = pageSize;
this.PagingBar1.RecordCount = recordCount;

最后三句帮我注释下 就给你分啦 只有你回答

追答

this.PagingBar1.CurrentPage = page;//设置当前页为第几页
this.PagingBar1.PageSize = pageSize;//设置每页记录数
this.PagingBar1.RecordCount = recordCount;//设置总记录数