为什么我写的ListViewItem lvi = new ListViewItem(); 必须要有参数才行？

卧槽这是我的昵称吗 2013-08-27 02:23:09

ListViewItem lvi = new ListViewItem();
错误 “System.Web.UI.WebControls.ListViewItem”不包含采用“0”个参数的构造函数

但是我在网上随便找的例子，都是这样写的啊，没见new ListViewItem(); 还带了参数的

而且msdn上

ListView listView1 = new ListView();

			listView1.Bounds = new Rectangle(new Point(10,10), new Size(300,200));



			// Set the view to show details.

			listView1.View = View.Details;

			// Allow the user to edit item text.

			listView1.LabelEdit = true;

			// Allow the user to rearrange columns.

			listView1.AllowColumnReorder = true;

			// Display check boxes.

			listView1.CheckBoxes = true;

			// Select the item and subitems when selection is made.

			listView1.FullRowSelect = true;

			// Display grid lines.

			listView1.GridLines = true;

			// Sort the items in the list in ascending order.

			listView1.Sorting = SortOrder.Ascending;

而我放在本地写算么listView1.AllowColumnReorder这些属性压根就没有啊？

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雪狐 2013-08-27

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汗。。。。。

全栈极简 2013-08-27

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你看错了。winform的listview有AllowColumnReorder，你的是webform的，没有AllowColumnReorder。

卧槽这是我的昵称吗 2013-08-27

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引用 2 楼 guwei4037 的回复:

ListView lv = new ListView(); lv.AllowColumnReorder = true; 是可以的。注意大小写。

“System.Web.UI.WebControls.ListView”不包含“AllowColumnReorder”的定义，并且找不到可接受类型为“System.Web.UI.WebControls.ListView”的第一个参数的扩展方法“AllowColumnReorder”(是否缺少 using 指令或程序集引用? 我真的不明白。。。

全栈极简 2013-08-27

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ListView lv = new ListView();
lv.AllowColumnReorder = true;
是可以的。注意大小写。

本拉灯 2013-08-27

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你找的是WINFORM的代码。。

ListView控件使用案例 GridLines:显示网格线 FullRowSelect:整行选择［一次选择一行］清空listView控件中的数据: this.listView1.Items.Clear(); 查询时： ListViewItem lvi = new ListViewItem(); //构造一新项 lvi.SubItems[0].Text=this.textBox1.Text.Trim(); lvi.SubItems.AddRange(new string[]{ this.textBox2.Text.Trim(), this.textBox3.Text.Trim(), this.textBox4.Text.Trim() }); this.listViewItem1.Items.Add(lvi); 增、删、改时： //判断是否有选择项 if(this.listViewItem1.SelectedItems[0].Count>0) { //得到所选择的项 ListViewItem lvi = this.listViewItem1.SelectedItems[0]; //string id = lvi.SubItems[0].Text; //或者 string id = lvi.Tag.ToString(); }

private void button3_Click(object sender, EventArgs e) { string number = textBox2.Text; string bookname = textBox3.Text; string press = textBox4.Text; string name = textBox6.Text; string price = textBox5.Text; DateTime dt= dateTimePicker1.Value; string bookid = dataGridView1.SelectedRows[0].Cells[0].Value.ToString(); MessageBox.Show(bookid); string sql1 = "update book set number='{0}',bookname ='{1}',press='{2}',price='{3}',dt='{4}'where bookid ='{5}' "; sql1 = string.Format(sql1,number, bookname,press,price,dt,bookid); string sql2 = "update categorybook set name='{0}'where categoryid in(select categoryid from book where bookid='{1}')"; sql2 = string.Format(sql2, name, bookid); SqlConnection conn = new SqlConnection(); conn.ConnectionString="server=20110810-1559\\SQLEXPRESS;database=stums;integrated security=true"; //conn.ConnectionString = "server=XP-201108091130\\SQLEXPRESS;database=stums;uid=sa;pwd=0"; conn.Open(); SqlTransaction st = conn.BeginTransaction(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; try { cmd.CommandText = sql1; cmd.ExecuteNonQuery(); cmd.CommandText = sql2; cmd.ExecuteNonQuery(); st.Commit(); Showmsg(); MessageBox.Show("修改成功"); } catch { MessageBox.Show("修改失败"); } } private void button9_Click(object sender, EventArgs e) { if (dataGridView1.RowCount > 0) { dataGridView1.SelectAll(); } } private void button10_Click(object sender, EventArgs e) { while(dataGridView1.SelectedRows.Count > 0) { DataGridViewRow dv = dataGridView1.SelectedRows[0]; dv.Selected = false; } } private void button11_Click(object sender, EventArgs e) { string sql = "select * from book "; SqlConnection conn = new SqlConnection("server=20110810-1559\\SQLEXPRESS;database=stums;integrated security=true"); //SqlConnection conn = new SqlConnection("server=XP-201108091130\\SQLEXPRESS;database=stums;uid=sa;pwd=0"); conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader sdr = cmd.ExecuteReader(); while (sdr.Read()) { ListViewItem lvi = new ListViewItem(); lvi.Text = sdr["number"].ToString(); lvi.SubItems.Add(sdr["bookname"].ToString()); lvi.SubItems.Add(sdr["price"].ToString()); listView1.Items.Add(lvi); } sdr.Close(); conn.Close(); }

在Android所有常用的原生控件当中，用法... 下面我们来学习它，了解了它的基本工作原理，在感叹Google大神能够写出如此精妙代码的同时我也有所敬畏. 1，ListView 介绍； 2，原理讲解； 3，简单实现； 4，ListView扩展;

C#学生信息显示 namespace xuexi6._ { public partial class Form1 : Form { public Form1() { InitializeComponent(); } public student[] sts = new student[10]; private void initializestudent() { student st0 = new student(); st0.Name = "赵阳"; st0.Sex = "男"; st0.Jiguan = "嘉兴"; st0.Banji = "计算机一班"; sts[0] = st0; student st1 = new student(); st1.Name = "蒋林杰"; st1.Sex = "男"; st1.Jiguan = "宁波"; st1.Banji = "计算机一班"; sts[1] = st1; student st2 = new student(); st2.Name = "邱明峰"; st2.Sex = "男"; st2.Jiguan = "杭州"; st2.Banji = "计算机一班"; sts[2] = st2; student st3 = new student(); st3.Name = "陆玲燕"; st3.Sex = "女"; st3.Jiguan = "丽水"; st3.Banji = "计算机一班"; sts[3] = st3; student st4 = new student(); st4.Name = "邵德华"; st4.Sex = "男"; st4.Jiguan = "台州"; st4.Banji = "计算机二班"; sts[4] = st4; student st5 = new student(); st5.Name = "吴旦"; st5.Sex = "女"; st5.Jiguan = "温州"; st5.Banji = "计算机二班"; sts[5] = st5; student st6 = new student(); st6.Name = "朱凤"; st6.Sex = "女"; st6.Jiguan = "绍兴"; st6.Banji = "计算机三班"; sts[6] = st6; student st7 = new student(); st7.Name = "邱小峰"; st7.Sex = "男"; st7.Jiguan = "湖州"; st7.Banji = "计算机三班"; sts[7] = st7; student st8 = new student(); st8.Name = "沈汉卿"; st8.Sex = "男"; st8.Jiguan = "衡州"; st8.Banji = "计算机三班"; sts[8] = st8; student st9 = new student(); st9.Name = "王佳俊"; st9.Sex = "男"; st9.Jiguan = "义乌"; st9.Banji = "计算机三班"; sts[9] = st9; } private void initializetvstudent() { TreeNode firsttn = new TreeNode("学生信息"); TreeNode secondtn1 = new TreeNode(sts[0].Banji); secondtn1.Nodes.Add(sts[0].Name); secondtn1.Nodes.Add(sts[1].Name); secondtn1.Nodes.Add(sts[2].Name); secondtn1.Nodes.Add(sts[3].Name); TreeNode secondtn2 = new TreeNode(sts[4].Banji); secondtn2.Nodes.Add(sts[4].Name); secondtn2.Nodes.Add(sts[5].Name); TreeNode secondtn3 = new TreeNode(sts[6].Banji); secondtn3.Nodes.Add(sts[6].Name); secondtn3.Nodes.Add(sts[7].Name); secondtn3.Nodes.Add(sts[8].Name); secondtn3.Nodes.Add(sts[9].Name); firsttn.Nodes.AddRange(new TreeNode[] { secondtn1, secondtn2, secondtn3 }); tvstudent.Nodes.Add(firsttn); } private void initializelvstudent() { ColumnHeader column1 = new ColumnHeader(); column1.Text = "姓名"; lvstudent.Columns.Add(column1); ColumnHeader column2 = new ColumnHeader(); column2.Text = "性别"; lvstudent.Columns.Add(column2); ColumnHeader column3 = new ColumnHeader(); column3.Text = "籍贯"; lvstudent.Columns.Add(column3); ColumnHeader column4 = new ColumnHeader(); column4.Text = "班级"; lvstudent.Columns.Add(column4); for (int i = 0; i < sts.Length; i++) { ListViewItem lvi = new ListViewItem(); lvi.Text = sts[i].Name; lvi.SubItems.Add(sts[i].Sex); lvi.SubItems.Add(sts[i].Jiguan); lvi.SubItems.Add(sts[i].Banji); lvstudent.Items.Add(lvi); } } private void tvstudentadd(int i) { ListViewItem lvi = new ListViewItem(); lvi.Text = sts[i].Name; lvi.SubItems.Add(sts[i].Sex); lvi.SubItems.Add(sts[i].Jiguan); lvi.SubItems.Add(sts[i].Banji); lvi.ImageIndex = i; lvstudent.Items.Add(lvi); } private void Form1_Load(object sender, EventArgs e) { initializestudent(); initializetvstudent(); initializelvstudent(); } private void tvstudent_AfterSelect(object sender, TreeViewEventArgs e) { lvstudent.Items.Clear(); if (e.Node.Text == "学生信息") { for (int i = 0; i < sts.Length; i++) { tvstudentadd(i); } } else if (e.Node.Text == "计算机一班") { for (int i = 0; i < sts.Length; i++) { if (sts[i].Banji == e.Node.Text) { tvstudentadd(i); } } } else if (e.Node.Text == "计算机二班") { for (int i = 0; i < sts.Length; i++) { if (sts[i].Banji == e.Node.Text) { tvstudentadd(i); } } } else if (e.Node.Text == "计算机三班") { for (int i = 0; i < sts.Length; i++) { if (sts[i].Banji == e.Node.Text) { tvstudentadd(i); } } } else { for (int i = 0; i < sts.Length; i++) { if (sts[i].Name == e.Node.Text) { tvstudentadd(i); } } } } public class student { private string name; private string sex; private string jiguan; private string banji; public string Name { get { return name; } set { name = value; } } public string Sex { get { return sex; } set { sex = value; } } public string Jiguan { get { return jiguan; } set { jiguan = value; } } public string Banji { get { return banji; } set { banji = value; } } } private void lvstudent_ItemActivate(object sender, EventArgs e) { MessageBox.Show("您选择的是：" + lvstudent.SelectedItems[0].Text); } private void btnlargeicon_Click(object sender, EventArgs e) { lvstudent.View = View.LargeIcon; } private void btnsmallicon_Click(object sender, EventArgs e) { lvstudent.View = View.SmallIcon; } private void btndetail_Click(object sender, EventArgs e) { lvstudent.View = View.Details; } private void btnlist_Click(object sender, EventArgs e) { lvstudent.View = View.List; } private void btntitle_Click(object sender, EventArgs e) { lvstudent.View = View.Tile; } } }

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; using System.Configuration; namespace PhoneBook { public partial class frmMain : Form { public frmMain() { InitializeComponent(); } private string strConn = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"]; private void frmMain_Load(object sender, EventArgs e) { LoadGroup(); if (trvGroup.Nodes.Count > 0) { trvGroup.SelectedNode = trvGroup.Nodes[0]; LoadList(); } else { lvContact.Clear(); } } private void LoadGroup() { try { trvGroup.Nodes.Clear(); SqlConnection conn = new SqlConnection(strConn); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; cmd.CommandText = "select distinct 组别 from 联系人 where 用户名='"+tsslUserName.Text+"'"; conn.Open(); SqlDataReader sdr = cmd.ExecuteReader(); while (sdr.Read()) { trvGroup.Nodes.Add(sdr[0].ToString()); } sdr.Close(); conn.Close(); } catch { } } private void LoadList() { if (trvGroup.Nodes.Count == 0) { lvContact.Clear(); return; } if (trvGroup.SelectedNode.Index >= 0) { string strGroup = trvGroup.SelectedNode.Text; try { lvContact.Clear(); lvContact.Columns.Add("姓名",100); lvContact.Columns.Add("工作

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