Question

我有这个来显示从数据库到listview的所有记录

   private void populatelistview()
    {
        listView1.Items.Clear();
        using (SqlConnection myDatabaseConnection = new SqlConnection(myConnectionString.ConnectionString))
        {
            myDatabaseConnection.Open();
            using (SqlCommand SqlCommand = new SqlCommand("Select * from Employee", myDatabaseConnection))
            {
                SqlCommand.CommandType = CommandType.Text;
                SqlDataReader dr = SqlCommand.ExecuteReader();
                while (dr.Read())
                {
                    listView1.Items.Add(new ListViewItem(new string[] { dr["EmpID"].ToString(), dr["Lname"].ToString(), dr["Fname"].ToString() }));
                }
            }
        }
    }

例如我有这个结果：

EmpID  |  Lname  |  Fname
40001  |  Smith  |  John
40002  |  Jones  |  David
40003  |  Bryan  |  Kobe

我将如何以编程方式从上面的列表中选择一个项目？例如，我在textBox中输入40002，然后选择40002 | Jones | David

Answer 1

您必须处理TextChanged的{{1}}事件：

TextBox

您也可以使用//TextChanged event handler for your textBox1 private void textBox1_TextChanged(object sender, EventArgs e) { ListViewItem item = listView1.Items.OfType<ListViewItem>() .FirstOrDefault(x => x.Text.Equals(textBox1.Text, StringComparison.CurrentCultureIgnoreCase)); if (item != null){ listView1.SelectedItems.Clear(); item.Selected = item.Focused = true; listView1.Focus();//Focus to see it in action because SelectedItem won't look like selected if the listView is not focused. } }方法，但请注意它与启动项目文字的确切字符串相匹配，这意味着您必须自己处理案例敏感度以防万一

以编程方式在ListView中选择项目

1 个答案: