Question

我是C＃的新手。我创建了一个随机类，设法生成一些不那么随机的数字。但我的问题是我想将这些数字输出到6个不同的文本框。我敢肯定，有一种更有效的方法可以做到这一点，也不会长篇大论。这就是我做到的：

protected void genBtn_Click(object sender, EventArgs e)
{

    Random RandomClass = new Random();
    int num1 , num2, num3 , num4, num5 , num6;
    num1 = RandomClass.Next(1,49);
    num2 = RandomClass.Next(1,49);
    num3 = RandomClass.Next(1,49);
    num4 = RandomClass.Next(1,49);
    num5 = RandomClass.Next(1,49);
    num6 = RandomClass.Next(1,49);



    TextBox1.Text = num1.ToString();
    TextBox2.Text = num2.ToString();
    TextBox3.Text = num3.ToString();
    TextBox4.Text = num4.ToString();
    TextBox5.Text = num5.ToString();
    TextBox6.Text = num6.ToString();

Answer 1

创建一个数组，然后循环？

Random RandomClass = new Random();
Control[] textboxes = new Contro[] {TextBox1,TextBox2,TextBox3,TextBox4,TextBox5,TextBox6};
foreach(Control c in textboxes) 
     c.Text = RandomClass.Next(1,49).ToString();

或List<TextBox>然后ForEach？

List<TextBox> textboxes = new List<TextBox>() {TextBox1,TextBox2,TextBox3,TextBox4,TextBox5,TextBox6};
textboxes.ForEach(x => x.Text = RandomClass.Next(1,49).ToString());

Answer 2

您的示例有效，但您不需要所有这些额外的变量。

protected void genBtn_Click(object sender, EventArgs e)
{
    Random RandomClass = new Random();
    TextBox1.Text = RandomClass.Next(1,49).ToString();
    TextBox2.Text = RandomClass.Next(1,49).ToString();
    TextBox3.Text = RandomClass.Next(1,49).ToString();
    TextBox4.Text = RandomClass.Next(1,49).ToString();
    TextBox5.Text = RandomClass.Next(1,49).ToString();
    TextBox6.Text = RandomClass.Next(1,49).ToString();
}

Answer 3

你可以这样做：

protected void genBtn_Click(object sender, EventArgs e)
{

    Random RandomClass = new Random();

        TextBox1.Text = RandomClass.Next(1, 49).ToString();
        TextBox2.Text = RandomClass.Next(1,49).ToString();
        TextBox3.Text = RandomClass.Next(1,49).ToString();
        TextBox4.Text = RandomClass.Next(1,49).ToString();
        TextBox5.Text = RandomClass.Next(1,49).ToString();
        TextBox6.Text = RandomClass.Next(1,49).ToString();
}

Answer 4

您可以在不同的面板控件上放置文本框，并且可能有更多文本框。这样做：

// Name your random num text boxes with some convention, like txtRand1. But not the others
// Recursive func to read all text boxes
private void RecFillRandTextBoxes(Control parent, rand)
{
    foreach (Control  c in parentcontrols) 
    {
        if (typeof(c) is TextBox && c.Name.StartsWith("txtRand"))
            c.Text = Next(1,49).ToString();
        else
            RecFillRandTextBoxes(c, rand);          
    }
}

然后只需在genBtn_Click

上的表单类中调用它

RecFillRandTextBoxes(this, rand);

将随机数输出到TextBox

4 个答案: