在C#的列表视图的列中更改特定单元格中的值 [英] Change value in specific cell in column in list view in C#

问题描述

[C#中的列表视图] [1]

[List View in C# ][1]

仅在C#中，如何使它与值列中的更改值排成一排? [1]: https://i.stack.imgur.com/Wt2CM.png图片 或如何获取值"列中的特定单元格?

How to make it in one row with change values in value column only in C# ?? [1]: https://i.stack.imgur.com/Wt2CM.png image Or How to get specific cell in column Value?

我要添加一列，但列值会发生变化? 当应用程序运行时，列表视图不断添加新值，逐行添加行，我想添加ID，名称，类型和值的一行，以便以后选择.

I want to add one row with value change in column value? When app is run the list view keep adding row line by line with new value witch i want to add one row with ID , name , type and value to can selected later.

示例图片: 只有红色框中的值会更改

Example images: Only value in red box will change

[1]: https://i.stack.imgur.com/ofBE6.png [2]: https://i.stack.imgur.com/dismy.png [3] : https://i.stack.imgur.com/QH0Vj.png

[1]: https://i.stack.imgur.com/ofBE6.png [2]: https://i.stack.imgur.com/dismy.png [3]: https://i.stack.imgur.com/QH0Vj.png

代码

public partial class Form1 : Form
{
    string r, rr, rrr;

     private void timer2_Tick(object sender, EventArgs e)
    {
        ListViewItem lvi = new ListViewItem("1");
        lvi.SubItems.Add(r);
        lvi.SubItems.Add(rr);
        lvi.SubItems.Add(rrr);
        listView1.Items.Add(lvi);

    }

    public Form1()
    {
        InitializeComponent();

    }

      private void timer1_Tick(object sender, EventArgs e)
    {
        Computer cp = new Computer();
        cp.Open();
        cp.GPUEnabled = true;
        cp.CPUEnabled = true;
        cp.RAMEnabled = true;
        cp.MainboardEnabled = true;


        foreach (var hardware in cp.Hardware) // get Hardware in pc
        {



            if (hardware.HardwareType == HardwareType.RAM)
            {
                hardware.Update();
                foreach (var senR in hardware.Sensors) //<== all sensor in ram
                {

                    if (senR.SensorType == SensorType.Load) // <== 1 sensor RAM usage
                    {   
                        Console.WriteLine("RAM: " + Convert.ToInt32(senR.Value) + " %");
                          r = senR.Name.ToString(); // sensor name
                         rr = senR.SensorType.ToString(); // sensor type
                        rrr = senR.Value.ToString(); // sensor value

                    }


                    }

                }

            }



}}

我可以使用列表视图的替代方法吗?

推荐答案

假设您的r是唯一值，则可以检查是否存在匹配的记录:

Assuming your r is the unique value, you can check to see if there's a matching record:

private void timer2_Tick(object sender, EventArgs e)
{

    bool exists = false;
    foreach (ListViewItem lvi in listView1.Items)
    {
        if ( lvi.SubItems(1).Text == r )
        {
            exists = true;
            lvi.SubItems(2).Text = rr;
            lvi.SubItems(3).Text = rrr;
        }
    }

    if (!exists )
    {
    ListViewItem lvi = new ListViewItem("1");
    lvi.SubItems.Add(r);
    lvi.SubItems.Add(rr);
    lvi.SubItems.Add(rrr);
    listView1.Items.Add(lvi);
    }

}

这是可行的，但说实话，我认为您应该更新一个DataTable和一个DataGridView. DataTable可以有一个唯一的列，您可以在源上进行检查查找，而不必在GUI上进行查找.

This is doable, but honestly, I think instead you should be updating a DataTable and a DataGridView. The DataTable can have a unique column and you can do a check find on the source, rather than doing a find on a GUI.

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