Question

我为会计师创建了一个程序。我有按钮添加产品，删除产品，添加产品数量，销售产品和利润（从列表中的所有产品计算利润）和产品列表视图产品，数量，购买价格和利润。我有按钮“添加产品数量”的问题我的想法是，当我在列表视图中选择产品而不是点击按钮“添加产品数量”我想打开一个新窗口（新表格）并传递所有值从列表视图中的选定项目到第二种形式，使用该值进行数学计算，然后将新值传递给第一种形式的选定项目，即更新列表视图中的选择项目。我怎么解决这个问题？这是我的代码：

Form1中：

public int Index;

    private void button3_Click(object sender, EventArgs e)
    {
        Form3 form3 = new Form3();
        form3.Show();
        form3.Hide();

        if (listView1.SelectedItems.Count > 0)
        {
            this.listView1.Items[0].Focused = true;
            this.listView1.Items[0].Selected = true;
            this.Index = listView1.FocusedItem.Index;
            ListViewItem selectedItem = listView1.SelectedItems[0];

            form3.GetData(listView1.Items[listView1.FocusedItem.Index].SubItems[0].Text, listView1.Items[listView1.FocusedItem.Index].SubItems[1].Text,
                          listView1.Items[listView1.FocusedItem.Index].SubItems[2].Text, listView1.Items[listView1.FocusedItem.Index].SubItems[3].Text);
            DialogResult ans = form3.ShowDialog();
            if (ans == DialogResult.OK)
            {
                listView1.FocusedItem.SubItems[0].Text = form3.Prozz;
                listView1.FocusedItem.SubItems[1].Text = form3.Kolii;
                listView1.FocusedItem.SubItems[2].Text = form3.Cenaa;
                listView1.FocusedItem.SubItems[3].Text = form3.Proff;
            }
        }
    }

窗体2：

  public string Prozz { get; set; }
    public string Kolii { get; set; }
    public string Cenaa { get; set; }
    public string Proff { get; set; }

    public Form3()
    {
        InitializeComponent();
    }
    public void GetData(string Proi, string Kol, string Cena, string Profit)
    {
        textBox1.Text = Kol;
        textBox2.Text = Cena;
        textBox3.Text = Profit;
        textBox6.Text = Proi;
    }
    public void SetData(string Proz, string Kol, string NabCena, string Prof)
    {
        int x = int.Parse(Kol);
        double y = double.Parse(NabCena);
        double z = double.Parse(Prof);
        int a = int.Parse(textBox4.Text);
        double b = double.Parse(textBox5.Text);

        int Kolicina = x + a;
        double sumNabavnaCena = (x * y + a * b) / (x + a);
        double Profit = z - Kolicina * sumNabavnaCena;

        Prozz = Convert.ToString(Proz);
        Kolii = Convert.ToString(Kolicina);
        Cenaa = Convert.ToString(sumNabavnaCena);
        Proff = Convert.ToString(Profit);
    }
    private void button1_Click(object sender, EventArgs e)
    {
        SetData(textBox6.Text, textBox1.Text, textBox2.Text, textBox3.Text);
        this.button1.Text = "OK";
        this.button1.DialogResult = DialogResult.OK;

        this.Close();
    }

Answer 1

当您只谈论几个文本框时，一种简单的方法是在Form2上创建几个属性来保存列表视图中的值。

//this will display the values from the listview
textBox1.Text = firstValue;
textBox2.Text = secondValue;

在form_load事件中

//this puts the changes back into the property
firstValue = textBox1.Text;
secondValue = textBox2.Text;

在你设置为dialogresult.OK

的buttonClick事件中

var f2 as new Form2();
//fill the firstValue propery with the 3rd column of the listview 
f2.firstValue = listview1.FocusedItem.SubItems[2].Text;
//fill the secondValue property with the 4th column of the listview
f2.secondValue = listview1.FocusedItem.SubItems[3].Text;
//show f2 as a dialog
DialogResult ans = f2.ShowDialog();
if(ans == DialogResult.OK)
{
    //update the listview with the values from the properties of form2
    listview1.focusedItem.SubItems[2].Text = f2.firstValue;
    listview1.FocusedItem.SubItems[3].Text = f2.secondValue;
}

现在，所有这一切的关键是您需要在Form1中填写此信息

public partial class Form1 : Form
{
    Form3 form3 = null;
    public Form1()
    {
        InitializeComponent();
    }
/*  private void Form1_Load(object sender, EventArgs e)
    {
//You won't need this. It just populates my 
//listview with some Dummy Data. I'll leave
//it here in case you want to mess with it
        for (int i = 0; i < 10; i++)
        {
            var lv = new ListViewItem();
            lv.Text = "Item" + i;
            lv.SubItems.Add((6+ i).ToString());
            lv.SubItems.Add((i + 7).ToString());
            lv.SubItems.Add((i + 3).ToString());
            listView1.Items.Add(lv);
        }
    }*/
    //public int Index; //not needed
    private void button3_Click(object sender, EventArgs e)
    {
        form3 = new Form3();
        if (listView1.SelectedItems.Count > 0)
        {
            //this.listView1.Items[0].Focused = true;
            //this.listView1.Items[0].Selected = true;
            //this.Index = listView1.FocusedItem.Index;
            //ListViewItem selecteditem = listView1.SelectedItems[0];

            form3.GetData(listView1.FocusedItem.Text, listView1.FocusedItem.SubItems[1].Text,
                            listView1.FocusedItem.SubItems[2].Text, listView1.FocusedItem.SubItems[3].Text);
            DialogResult ans = form3.ShowDialog();
            if (ans == DialogResult.OK)
            {
                listView1.FocusedItem.Text = form3.Prozz;
                listView1.FocusedItem.SubItems[1].Text = form3.Kolii;
                listView1.FocusedItem.SubItems[2].Text = form3.Cenaa;
                listView1.FocusedItem.SubItems[3].Text = form3.Proff;
            }
        }
        form3 = null;
    }
}

已移除代码 - 新代码涵盖：
图片已删除
以下是我使用的代码
FORM1

public partial class Form3 : Form
{
    public string Prozz { get; set; }
    public string Kolii { get; set; }
    public string Cenaa { get; set; }
    public string Proff { get; set; }

    public Form3()
    {
        InitializeComponent();
    }

    public void GetData(string Proi, string Kol, string Cena, string Profit)
    {
        textBox1.Text = Kol;
        textBox2.Text = Cena;
        textBox3.Text = Profit;
        textBox6.Text = Proi;
    }

    public void SetData(string Proz, string Kol, string NabCena, string Prof)
    {
        int x = int.Parse(Kol);
        double y = double.Parse(NabCena);
        double z = double.Parse(Prof);
        int a = int.Parse(textBox4.Text);
        double b = double.Parse(textBox5.Text);

        int Kolicna = x + a;
        double subNabavnaCena = (x * y + a * b) / (x + a);
        double Profit = z - Kolicna * subNabavnaCena;

        Prozz = Proz.ToString();
        Kolii = Kolicna.ToString();
        Cenaa = subNabavnaCena.ToString();
        Proff = Profit.ToString();
    }
    private void button1_Click(object sender, EventArgs e)
    {
        SetData(textBox6.Text, textBox1.Text, textBox2.Text, textBox3.Text);

        //you should move these two lines up under InitializeComponent()
        //otherwise you will never see the button text set to OK and you
        //can set the dialogResult before you need the button.
        this.button1.Text = "OK";
        this.button1.DialogResult = DialogResult.OK;
    }

}

FORM3：

<Link to={address} onClick={actions.handlerFunction}>

如何在c＃的windows窗体应用程序中将主窗体列表视图中的项目更新为第二种形式的文本框？

1 个答案: