实验2 -DataList 增删改查等操作
具体效果如下所示:
- 使用Datalist显示数据，
- 新增数据，
- 修改
- 删除数据等操作
- 主要设置下面两个属性修改显示的外观。
6：在编辑模板列中，寻找事件选项，生成相关事件。并注意拖入的按钮的CommandName要改为delete，update，cancel等。
全例
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;
using System.Data.SqlClient;
public partial class xin : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Page.ti
if (!Page.IsPostBack)
{
Bind();
}
}
/// <summary>
/// 数据绑定
/// </summary>
public void Bind()
{
string strCon = "server=.;database=studentTable;pwd=123;user id=sa";
SqlConnection con = new SqlConnection(strCon);
con.Open();
string strSql = "select * from stuinfo";
SqlDataAdapter da = new SqlDataAdapter(strSql, con);
DataSet ds = new DataSet();
da.Fill(ds);
PagedDataSource ps = new PagedDataSource();
ps.AllowPaging = true;
ps.DataSource = ds.Tables[0].DefaultView;
int curpage ;
if (Request.QueryString["page"] != null)
{
curpage = Convert.ToInt32(Request.QueryString["page"]);
}
else
{
curpage = 1;
}
ps.CurrentPageIndex = curpage - 1;
ps.PageSize = 2;
int count = ds.Tables[0].DefaultView.Count / ps.PageSize;
if (ds.Tables[0].DefaultView.Count % ps.PageSize != 0)
{
count++;
}
this.Label5.Text = "当前页：" + curpage.ToString() + " 共" + count.ToString() + "页";
this.HyperLink3.NavigateUrl = Request.CurrentExecutionFilePath;
if (!ps.IsFirstPage)
{
this.HyperLink1.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (curpage - 1);
}
if (!ps.IsLastPage)
{
this.HyperLink2.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (curpage + 1);
}
this.HyperLink4.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" +count;
this.DataList1.DataSource = ps;
this.DataList1.DataBind();
con.Close();
}
/// <summary>
/// 编辑
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = e.Item.ItemIndex;
Bind();
}
/// <summary>
/// 取消
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)
{
this.DataList1.EditItemIndex = -1;
}
/// <summary>
/// 更新
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)
{
string strName = ((TextBox)this.DataList1.Items[e.Item.ItemIndex].FindControl("TextBox2")).Text.ToString();
string strSq = "update stuinfo set name ='"+strName+"' where id= "+this.DataList1.DataKeys[e.Item.ItemIndex].ToString()+"";
string strCon = "server=.;database=studentTable;pwd=123;user id=sa";
SqlConnection con = new SqlConnection(strCon);
con.Open();
SqlCommand com = new SqlCommand(strSq,con);
com.ExecuteNonQuery();
this.DataList1.EditItemIndex = -1;
con.Close();
Bind();
}
/// <summary>
/// 删除后绑定
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e)
{
string strSq = "delete stuinfo where id= " + this.DataList1.DataKeys[e.Item.ItemIndex].ToString() + "";
string strCon = "server=.;database=studentTable;pwd=123;user id=sa";
SqlConnection con = new SqlConnection(strCon);
con.Open();
SqlCommand com = new SqlCommand(strSq, con);
com.ExecuteNonQuery();
con.Close();
Bind();
}
protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
e.Item.Attributes.Add("onmouseover", "c=this.stle.backgroundColor,this.style.backgroundColor='#223344'");
e.Item.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
(( Button)e.Item.FindControl("Button4")).Attributes.Add("onclick","return confirm('是否删除')");
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string str = "1/" + this.FileUpload1.FileName;
string strPath = Server.MapPath( str);
FileUpload1.PostedFile.SaveAs(strPath);
string strSq = "insert into stuinfo(name,sex,age,pwd,image)";
strSq += "values('"+this.TextBox1.Text+"',"+this.RadioButtonList1.SelectedIndex+",'"+this.TextBox3.Text+"','"+this.TextBox4.Text+"','"+str+"') ";
string strCon = "server=.;database=studentTable;pwd=123;user id=sa";
SqlConnection con = new SqlConnection(strCon);
con.Open();
SqlCommand com = new SqlCommand(strSq, con);
com.ExecuteNonQuery();
con.Close();
Bind();
}
}
