asp.net之DataList的使用方法，及分页（存储过程创建），编辑，更新，删除

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
BindProduct("1");
}

private void BindProduct(string pageindex)
{
string str = ConfigurationManager.ConnectionStrings["studentCnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
SqlDataAdapter da = new SqlDataAdapter("sp_Student_Select_by_Page_rowNumber", sqlCnn);
da.SelectCommand.Parameters.AddWithValue("@pageIndex", pageindex);
da.SelectCommand.Parameters.Add("@pageCount", SqlDbType.Int).Direction = ParameterDirection.Output;
da.SelectCommand.Parameters.AddWithValue("@pageSize", 2);
da.SelectCommand.CommandType = CommandType.StoredProcedure;
DataSet ds = new DataSet();
da.Fill(ds);
this.DataList1.DataSource = ds.Tables[0].DefaultView;
this.DataList1.DataBind();
this.HiddenField1.Value = pageindex;
this.HiddenField2.Value = da.SelectCommand.Parameters["@pageCount"].Value.ToString();

}
} //绑定数据
protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
if(e.CommandName == "buy")
Response.Write(e.CommandArgument.ToString());
}
protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = e.Item.ItemIndex;
this.BindProduct(this.HiddenField1.Value);
}//编辑
protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = -1;
this.BindProduct(this.HiddenField1.Value);
} //取消
protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
{
string name = (e.Item.FindControl("TextBox1") as TextBox).Text;
string sex = (e.Item.FindControl("TextBox2") as TextBox).Text;
string age = (e.Item.FindControl("TextBox3") as TextBox).Text;
string str = ConfigurationManager.ConnectionStrings["studentCnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
SqlCommand sqlcmm = sqlCnn.CreateCommand();
sqlcmm.CommandText = "update student set sname=@sname,sex=@sex,age=@age where sid=@sid";
sqlcmm.Parameters.AddWithValue("@sname", name);
sqlcmm.Parameters.AddWithValue("@sex", sex);
sqlcmm.Parameters.AddWithValue("@age", age);
sqlcmm.Parameters.AddWithValue("@sid", e.CommandArgument);
sqlCnn.Open();
sqlcmm.ExecuteNonQuery();

}
this.DataList1.EditItemIndex = -1;
this.BindProduct(this.HiddenField1.Value);
} //更新
protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e)
{
string str = ConfigurationManager.ConnectionStrings["studentCnn"].ConnectionString;
using (SqlConnection sqlCnn = new SqlConnection(str))
{
SqlCommand sqlcmm = sqlCnn.CreateCommand();
sqlcmm.CommandText = "delete from student where sid=@sid";
sqlcmm.Parameters.AddWithValue("@sid", e.CommandArgument);
sqlCnn.Open();
sqlcmm.ExecuteNonQuery();
}
this.BindProduct(this.HiddenField1.Value);
} //删除
protected void Button6_Click(object sender, EventArgs e)
{
this.BindProduct("1");
} //首页
protected void Button9_Click(object sender, EventArgs e)
{
int count = Convert.ToInt32(this.HiddenField2.Value);
this.BindProduct(count.ToString());
} //尾页
protected void Button7_Click(object sender, EventArgs e)
{
int index = Convert.ToInt32(this.HiddenField1.Value);
if (index > 1)
index--;
this.BindProduct(index.ToString());
}//上一页
protected void Button8_Click(object sender, EventArgs e)
{
int index = Convert.ToInt32(this.HiddenField1.Value);
int count = Convert.ToInt32(this.HiddenField2.Value);

if (index < count)
index++;
this.BindProduct(index.ToString());
}
} //下一页

存储过程的创建：

ALTER PROCEDURE sp_Student_Select_by_Page_rowNumber
@pageSize int, --每页记录数量
@pageCount int output, --总页数
@pageIndex int --当前页索引号

AS
BEGIN
declare @totalRecords int
select @totalRecords = count(sid) from student
if(@totalRecords % @pageSize = 0)
set @pageCount = @totalRecords / @pageSize;
else
set @pageCount = @totalRecords / @pageSize +1;
with temp as (select row_number() over (order by sid) as id,* from student)
select * from temp where id between (@pageIndex -1)*@pageSize +1 and @pageIndex * @pageSize
return @totalRecords
end