如何在listview VB.NET中搜索和显示相同的项目或重复项目 [英] How to search and display same items or duplicate items in listview VB.NET

问题描述

需要帮助，首先不是英文好，

我有listview显示来自指定目录的文本文件中的项目（文件夹），我想搜索框和（TextBox1）和cmdButton（Button1）来搜索和显示我在第三列搜索的所有项目或ID号。



EX：



第1栏：日期和时间：

第2栏：姓名：

第3栏：身份证号码：



08-08-2017 06:06:00，John Lucas，1010000

08-08-2017 07:00:00， April Dun，1010023

08-08-2017 08：45：00，Kevin Elmo，1010014

08-08-2017 09:06:00，John Lucas，1010000

08-08-2017 10:24:00，Ed Olivia，1010012

08-08-2017 11:47:00，John Lucas，1010000

08-08-2017 12：56：00，Liza Ben，1010001



我想通过搜索ID号码显示John Lucas的数据（项目）并在listview中显示（另一个列表视图）



我尝试过：


'这是仅从文本文件显示我的项目的代码，我不知道，我要求你提供一些帮助，TIA。'

 Private Sub Form1_Load（sender As Object，e As EventArgs）处理MyBase.Load，MyBase.DockChanged 
 lvDETAILS.View = View.Details 
 lvDETAILS.Columns .Add（Date / Time：，220，Horizo​​ntalAlignment.Left）
 lvDETAILS.Columns.Add（Employee Name：，280，Horizo​​ntalAlignment.Left）
 lvDETAILS.Columns.Add（ID编号：，120，Horizo​​ntalAlignment.Left）
 lvDETAILS.Columns.Add（Department：，250，Horizo​​ntalAlignment.Left）
 lvDETAILS.Columns.Add（User Type：，200，Horizo​​ntalAlignment .Left）
 lvDETAILS.Columns.Add（ESD检查结果：，200，Horizo​​ntalAlignment.Left）
 
 Dim File_Name As String =D：\esdcheck \DET.dll 
 Dim objReader As New IO.StreamReader（File_Name）
 Dim newarray（6）As String 
 Dim DateTime As String 
 Dim Name As String 
 Dim IDNum As String 
 Dim Department As String 
 Dim UserType As String 
 Dim ESDResult As String 
 
 Do而objReader.Peek<> -1 
 newarray = objReader.ReadLine（）。Split（，）
 DateTime = newarray（0）
 Name = newarray（1）
 IDNum = newarray（2） 
 Department = newarray（3）
 UserType = newarray（4）
 ESDResult = newarray（5）
 Dim x As Integer = lvDETAILS.Items.Add（New ListViewItem（New String） （）{DateTime}））。索引'Para sa Listview unang Column depende sa base sa index 
 lvDETAILS.Items.Item（x）.SubItems.Add（Name）'yung'x'po na yun ay number of index na nakaset per column。，ilalagay sa second column depende sa index 
 lvDETAILS.Items.Item（x）.SubItems.Add（IDNum）'sunod sunod lang po pa pag lagay depende sa dami ng column 
 lvDETAILS.Items.Item（x）.SubItems.Add（Department）'yeah 
 lvDETAILS.Items.Item（x）.SubItems.Add（UserType）'yeah 
 lvDETAILS.Items.Item（x） .SubItems.Add（ESDResult）'是的!!! eto na yung最后！ 
 End Sub 

解决方案

您最好的解决方案是使用支持数据绑定的控件。过滤。虽然它可能并且过度参与，但ListView并不适合用于此目的。



但是DataGridView是为您想要实现的任务而设计的。 CodeProject的这篇文章向您展示了如何实现您的目标：详细的数据绑定教程 [ ^ ]

感谢您的回复



我使用Visual Studio 2017 VB.net - 它是C＃

Hi,

Need help, First not good in english,
I have listview displaying items from text file from designated directory (folder), i want search box and (TextBox1) and cmdButton (Button1) to search and display all items I search in third column or the ID Number.

EX:

Column 1: Date and Time:
Column 2: Name:
Column 3: ID Number:

08-08-2017 06:06:00, John Lucas, 1010000
08-08-2017 07:00:00, April Dun, 1010023
08-08-2017 08:45:00, Kevin Elmo, 1010014
08-08-2017 09:06:00, John Lucas, 1010000
08-08-2017 10:24:00, Ed Olivia, 1010012
08-08-2017 11:47:00, John Lucas, 1010000
08-08-2017 12:56:00, Liza Ben, 1010001

I want to display data (items) of John Lucas by searching ID Number and display it in listview (another listview)

What I have tried:

'This is the code to display my items from text file only, I don't have any idea and Im asking for some help from you, TIA.'

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load, MyBase.DockChanged
lvDETAILS.View = View.Details
        lvDETAILS.Columns.Add("Date/Time:", 220, HorizontalAlignment.Left)
        lvDETAILS.Columns.Add("Employee Name:", 280, HorizontalAlignment.Left)
        lvDETAILS.Columns.Add("ID Number:", 120, HorizontalAlignment.Left)
        lvDETAILS.Columns.Add("Department:", 250, HorizontalAlignment.Left)
        lvDETAILS.Columns.Add("User Type:", 200, HorizontalAlignment.Left)
        lvDETAILS.Columns.Add("ESD Check Result:", 200, HorizontalAlignment.Left)

        Dim File_Name As String = "D:\esdcheck\DET.dll"
        Dim objReader As New IO.StreamReader(File_Name)
        Dim newarray(6) As String
        Dim DateTime As String
        Dim Name As String
        Dim IDNum As String
        Dim Department As String
        Dim UserType As String
        Dim ESDResult As String

        Do While objReader.Peek <> -1
            newarray = objReader.ReadLine().Split(",")
            DateTime = newarray(0)
            Name = newarray(1)
            IDNum = newarray(2)
            Department = newarray(3)
            UserType = newarray(4)
            ESDResult = newarray(5)
            Dim x As Integer = lvDETAILS.Items.Add(New ListViewItem(New String() {DateTime})).Index 'Para sa Listview unang Column depende sa base sa index
            lvDETAILS.Items.Item(x).SubItems.Add(Name) 'yung 'x' po na yun ay number of index na nakaset per column., ilalagay sa second column depende sa index
            lvDETAILS.Items.Item(x).SubItems.Add(IDNum) 'sunod sunod lang po ang pag lagay depende sa dami ng column
            lvDETAILS.Items.Item(x).SubItems.Add(Department) 'yeah
            lvDETAILS.Items.Item(x).SubItems.Add(UserType) 'yeah
            lvDETAILS.Items.Item(x).SubItems.Add(ESDResult) 'yeah !!! eto na yung last!
End Sub

解决方案

Your best solution is to use a control that supports data binding & filtering. Whilst it is possible and overly involved, the ListView is not really suitable for this purpose.

However the DataGridView is designed for the task that you want to achieve. This CodeProject article shows you exactly how to achieve what you want: A Detailed Data Binding Tutorial[^]

Thank you for the reply

Im using Visual Studio 2017 VB.net - it's C#

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