首页 > 代码库 > DataList的使用 分页 用Button删除 编辑 datalist中的内容 数据源的绑定 及表格的使用
DataList的使用 分页 用Button删除 编辑 datalist中的内容 数据源的绑定 及表格的使用
以前没接触过datalist 这次做项目第一次使用它 遇到一些问题 所以跟大家分享一下 以后遇到问题可以节约点时间
先来个效果图吧
先来说模版八 我用的是ItemTemplate模块
1：先在页面中假如datalist控件 接下来我们编辑模块选择ItemTempalte选项 然后结束模版编辑
2：数据源的绑定
数据源根据你自己的情况来选择 我的数据在sql中 所以选的这个
按上面表好的步骤操作 4是你自己的数据库名称 测试成功后一路默认选择下一步 最后来到
先测试一下有没有数据 是不是你要的数据 然后点击完成
datalist就变成下面这个样子了
接下来就是修改了 修改模块
模版建好了 接下来我们来修改数据源 当我们点击到datalist控件的时候 都会又一个向右的箭头 我们点击它 把数据源该成使用自定义绑定
刚刚我们本来也可以这样绑定 但为了自己在写表达式的时候出问题 我们选择这会儿修改一下 给编辑按钮和删除按钮添加onclick事件（双击就可以了） 并给他们的commandName属性中添加一个名字 待会儿会用到 除了edit delete update外的名字 （我的名字为edit1 delete1）
然后结束模版编辑 并且把数据源选择为无 出现提示框时选否
添加分页按钮 自己想怎么弄怎么弄
linkbutton 按钮跟lable两个构成
始让我们的数据显示出来八 记得添加命名空间
1: using System.Data;2: using System.Data.SqlClient;3: using System.Web.Configuration;
1: protected void Page_Load(object sender, EventArgs e)
2: { 3: string sql = "select * from AdvertisingPicture order by PlaySort";
4: 5: if (!Page.IsPostBack)
6: bind(sql); 7: 8: } 9: 10: public void bind(string sql)
11: { 12: int current_page = Convert.ToInt32(lblCurrent.Text);
13: string constr = WebConfigurationManager.ConnectionStrings["OrderSystem4ConnectionString"].ConnectionString;
14: 15: SqlConnection con = new SqlConnection(constr);
16: SqlDataAdapter da = new SqlDataAdapter(sql, con);
17: DataSet ds = new DataSet();
18: da.Fill(ds); 19: PagedDataSource ps = new PagedDataSource();
20: ps.DataSource = ds.Tables[0].DefaultView; 21: ps.AllowPaging = true;
22: ps.PageSize = 6; 23: lblTotal.Text = ps.PageCount.ToString(); 24: lbSum.Text = ps.DataSourceCount.ToString(); 25: ps.CurrentPageIndex = current_page - 1; 26: lbtnFirst.Enabled = true;
27: lbntUp.Enabled = true;
28: lbtnDown.Enabled = true;
29: lbtnLast.Enabled = true;
30: if (current_page == 1)
31: { 32: lbtnFirst.Enabled = false;
33: lbntUp.Enabled = false;
34: } 35: if (current_page == Convert.ToInt32(lblTotal.Text))
36: { 37: lbtnLast.Enabled = false;
38: lbtnDown.Enabled = false;
39: } 40: DataList1.DataSource = ps; 41: DataList1.DataBind(); 42: } 43: protected void lbtnFirst_Click(object sender, EventArgs e)
44: { 45: string sql = "select * from AdvertisingPicture order by PlaySort";
46: lblCurrent.Text = "1";
47: bind(sql); 48: } 49: 50: protected void lbntUp_Click(object sender, EventArgs e)
51: { 52: string sql = "select * from AdvertisingPicture order by PlaySort";
53: lblCurrent.Text = (Convert.ToInt32(lblCurrent.Text) - 1).ToString(); 54: bind(sql); 55: } 56: 57: protected void lbtnDown_Click(object sender, EventArgs e)
58: { 59: string sql = "select * from AdvertisingPicture order by PlaySort";
60: lblCurrent.Text = (Convert.ToInt32(lblCurrent.Text) + 1).ToString(); 61: bind(sql); 62: } 63: 64: protected void lbtnLast_Click(object sender, EventArgs e)
65: { 66: string sql = "select * from AdvertisingPicture order by PlaySort";
67: lblCurrent.Text = lblTotal.Text; 68: bind(sql); 69: }插件问题 就将就看了八 已经实现了分页（当前页的text首先在属性里设置为1） 接下来就是删除 跟编辑按钮
给Datalist添加ItemCommand事件
1: protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
2: { 3: if (e.CommandName == "edit1")
4: { 5: 6: Label lb = (Label) e.Item.FindControl("PictureNoLabel");
7: string num = lb.Text.ToString();
8: Response.Redirect("adEdit.aspx?num=" + num);
9: } 10: if (e.CommandName == "delete1")
11: { 12: Label lb =(Label) e.Item.FindControl("PictureNoLabel");
13: string no = lb.Text.ToString();
14: string sql = "delete from AdvertisingPicture where PictureNo=‘" + no + "‘";
15: string constr = WebConfigurationManager.ConnectionStrings["OrderSystem4ConnectionString"].ConnectionString;
16: 17: SqlConnection con = new SqlConnection(constr);
18: try
19: { 20: SqlCommand cmd = new SqlCommand(sql, con);
21: con.Open(); 22: 23: cmd.ExecuteNonQuery(); 24: 25: Response.Write("<script>alert(‘删除成功!‘)</script>");
26: } 27: catch (SqlException ex)
28: { 29: throw ex;
30: } 31: finally
32: { 33: con.Close(); 34: } 35: sql = "select * from AdvertisingPicture order by PlaySort";
36: bind(sql); 37: 38: } 39: }我的代码就演示完了 对于编辑 我是直接跳转到另一个页面的 给你看看另一个页面代码 以及效果图
1: using System;
2: using System.Collections.Generic;
3: using System.Linq;
4: using System.Web;
5: using System.Web.UI;
6: using System.Web.UI.WebControls;
7: using System.Data.SqlClient;
8: using System.Data;
9: using System.Web.Configuration;
10: 11: namespace test1
12: { 13: public partial class adEdit : System.Web.UI.Page
14: { 15: protected void Page_Load(object sender, EventArgs e)
16: { 17: if (Request.QueryString["num"] != null&&!IsPostBack)
18: { 19: string num = Request.QueryString["num"].ToString();
20: // Session["num"] = Request.QueryString["num"].ToString();
21: string sql = "select * from AdvertisingPicture where PictureNo=‘" + num + "‘";
22: string constr = WebConfigurationManager.ConnectionStrings["OrderSystem4ConnectionString"].ConnectionString;
23: SqlConnection con = new SqlConnection(constr);
24: SqlDataAdapter da = new SqlDataAdapter(sql, con);
25: DataSet ds = new DataSet();
26: da.Fill(ds); 27: 28: Label1.Text = ds.Tables[0].Rows[0]["PictureNo"].ToString();
29: Image1.ImageUrl = ds.Tables[0].Rows[0]["PictureUrl"].ToString();
30: Session["pathname"] = ds.Tables[0].Rows[0]["PictureUrl"].ToString();
31: TextBox1.Text = ds.Tables[0].Rows[0]["Name"].ToString();
32: TextBox2.Text = ds.Tables[0].Rows[0]["PlaySort"].ToString();
33: } 34: 35: 36: } 37: 38: 39: protected void Button1_Click(object sender, EventArgs e)
40: { 41: if (FileUpload1.HasFile)
42: { 43: 44: try {
45: if (FileUpload1.PostedFile.ContentType != "image/gif" && FileUpload1.PostedFile.ContentType != "image/jpg"
46: && FileUpload1.PostedFile.ContentType != "image/pjpeg" && FileUpload1.PostedFile.ContentType != "image/jpeg")
47: { 48: 49: //只能是图片格式
50: Response.Write("<script>alert(‘您要上传的照片格式只能是JPG或GIF格式.‘);</script>");
51: } 52: else
53: { 54: string path = Request.MapPath("~/image/");
55: FileUpload1.SaveAs(path + FileUpload1.FileName); 56: string pathname = "~/image/" + FileUpload1.FileName;
57: Session["pathname"] = pathname;
58: Image1.ImageUrl = Session["pathname"].ToString();
59: } 60: } 61: catch(SqlException ex)
62: { 63: throw ex;
64: } 65: } 66: } 67: 68: protected void Button2_Click(object sender, EventArgs e)
69: { 70: string PictureUrl = Session["pathname"].ToString();
71: string Name = string.IsNullOrEmpty(TextBox1.Text.ToString().Trim()) ? "空" : TextBox1.Text.ToString();
72: // int m = Convert.ToInt32(TextBox2.Text.ToString());
73: int PlaySort = 0;
74: try{
75: 76: PlaySort =Convert.ToInt32( string.IsNullOrEmpty(TextBox2.Text.ToString().Trim())?0:Convert.ToInt32( TextBox2.Text.ToString()));
77: } 78: catch
79: { 80: Response.Write("<script>alert(‘请输入正确的播放顺序!‘)</script>");
81: return;
82: } 83: string num = Request.QueryString["num"].ToString();
84: string sql = "update AdvertisingPicture set Name = ‘"+Name+"‘,PictureUrl=‘"+PictureUrl+"‘ ,PlaySort=‘"+PlaySort+"‘ where PictureNo = ‘"+num+"‘";
85: string constr = WebConfigurationManager.ConnectionStrings["OrderSystem4ConnectionString"].ConnectionString;
86: SqlConnection con = new SqlConnection(constr);
87: try
88: { 89: con.Open(); 90: SqlCommand cmd = new SqlCommand(sql, con);
91: cmd.ExecuteNonQuery(); 92: } 93: catch (SqlException ex)
94: { 95: throw ex;
96: } 97: finally
98: { 99: con.Close(); 100: Response.Redirect("test.aspx");
101: } 102: } 103: 104: protected void Button3_Click(object sender, EventArgs e)
105: { 106: Response.Redirect("test.aspx");
107: } 108: } 109: }
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