Question

我正在创建一个程序，用户可以在一个表单上的文本框中输入值，然后数据将被转移到另一个表单。我认为这样做的最好方法是将用户数据存储在几个数组中，然后将这些数组放在上面，但此刻我真的遇到了麻烦。一旦用户输入了他们需要的文本框，文本框也会被创建，因此文本框最初不会存在于页面上

 string q = combobox1.SelectedItem.ToString();
        int g = Convert.ToInt32(q);
        MessageBox.Show("I have added " +(g-1) +" Films to the list");
        TextBox[] FilmTitle1 = new TextBox[int.Parse(q)];
        TextBox[] FilmBudget1 = new TextBox[int.Parse(q)];
        TextBox[] FilmBoxOffice1 = new TextBox[int.Parse(q)];
        TextBox[] FilmDirector1 = new TextBox[int.Parse(q)];
        TextBox[] FilmRtScore1 = new TextBox[int.Parse(q)];
        TextBox[] FilmGenre1 = new TextBox[int.Parse(q)];
        int y = 500;
        for (int i = 0; i < g; i++)
        {
            FilmTitle1[i] = new TextBox();
            FilmTitle1[i].Text = "Film Title";
            FilmTitle1[i].Size = new Size(162, 20);
            FilmTitle1[i].Location = new Point(106, y);
            FilmTitle1[i].Tag = 0;
            this.Controls.Add(FilmTitle1[i]);
            y= y + 40;

private void Createbar_Click(object sender, EventArgs e)
    {
        BarGraphCreation frm = new BarGraphCreation(FilmTitle.Text, FilmBudget.Text, FilmBoxOffice.Text, FilmDirector.Text, FilmGenre.Text, ft1, FilmBudget1.Text, FilmBoxOffice1.Text, FilmDirector1.Text, FilmGenre1.Text);
       frm.Show();
    }

但是当我这样做的时候，它表示没有文本框的构造，尽管事实上它允许它在程序中的其他地方。非常感谢任何类型的帮助

Answer 1

public class Form
{
        // your code ...

        string q = combobox1.SelectedItem.ToString();
        int g = Convert.ToInt32(q);
        MessageBox.Show("I have added " +(g-1) +" Films to the list");
        public TextBox[] FilmTitle1 = new TextBox[int.Parse(q)];
        public TextBox[] FilmBudget1 = new TextBox[int.Parse(q)];
        public TextBox[] FilmBoxOffice1 = new TextBox[int.Parse(q)];
        public TextBox[] FilmDirector1 = new TextBox[int.Parse(q)];
        public TextBox[] FilmRtScore1 = new TextBox[int.Parse(q)];
        public TextBox[] FilmGenre1 = new TextBox[int.Parse(q)];
        int y = 500;
        for (int i = 0; i < g; i++)
        {
            FilmTitle1[i] = new TextBox();
            FilmTitle1[i].Text = "Film Title";
            FilmTitle1[i].Size = new Size(162, 20);
            FilmTitle1[i].Location = new Point(106, y);
            FilmTitle1[i].Tag = 0;
            this.Controls.Add(FilmTitle1[i]);
            y= y + 40;

    private void Createbar_Click(object sender, EventArgs e)
    {
        BarGraphCreation frm = new BarGraphCreation(this);
       frm.Show();
    }
}

public class BarGraphCreation
{
    // your code...

    Form form;
    public BarGraphCreation(Form form)
    {
        // ...
        this.form = form;
    }

    private void function()
    {
        // here you can work with your data like
        // form.FilmTitle1 and so on
    }
}

Answer 2

您应该避免将TextBox等整个对象传递给其他控件。一般的想法是，你不要总是只传递数据（信息）。

由于Form布局是动态创建的，因此有关Controls的信息应放在某处，可以轻松再次访问。

示例（包括数组和列表作为示例）：

public class Form1 : Form
{
    private TextBox[] FilmTitles;
    private List<TextBox> FilmBudget = new List<Textbox>();

    //code removed for brevity

    private void Button1_Click( /***/ )
    {
        FilmBudget.Clear();

        int count = Convert.ToInt32(q);
        FilmTitles = new TextBox[count];

        for (int i = 0; i < count; i++)
        {
            FilmTitles[i] = new TextBox()
            {
                Text = "Programmer in one day",
                Size = new Size(162, 20)
                // all other definitions
            };


            FilmBudget.Add(new TextBox()
            {
                Text = "1225",
                Size = new Size(162, 20)
                // all other definitions
            };

            this.Controls.Add(FilmTitles[i]);
            this.Controls.Add(FilmBudget[i]);

            //Now you are holding all the TB & text in global variables (arrays/lists)
        }
    }    

    private void Createbar_Click(object sender, EventArgs e)
    {

        BarGraphCreation frm = new BarGraphCreation(
               FilmTitles.Select( a => a.Text).ToArray(),
               FilmBudget.Select( a => a.Text).ToArray());
        frm.Show();
    }    

}

其中：

public class BarGraphCreation : Form
{
    public BarGraphCreation(string[] Titles, string[] Budgets)
    { }
}

请注意，此部分使用LINQ选择精确属性（值）为2个数组：

BarGraphCreation frm = new BarGraphCreation(
               FilmTitles.Select( a => a.Text).ToArray(),
               FilmBudget.Select( a => a.Text).ToArray());

将文本框中的用户输入从一种形式传送到另一种形式

2 个答案: