使用C＃从动态创建的文本框和标签创建变量

I am wanting to use to names assigned using .Name to input from text boxes then calculate and output to the labels.

我想用于使用.Name分配的名称从文本框输入然后计算并输出到标签。

Not sure how I can refer to these inputs as they currently have names but no assigned variables.

我不知道如何引用这些输入，因为它们目前有名称但没有指定的变量。

Sorry if I don't make much sense I am not a very proficient coder.

对不起，如果我没有多大意义，我不是一个非常熟练的编码器。

public partial class Form1 : Form
{
    List<TextBox> Txt1 = new List<TextBox>();
    public Form1()
    {
       InitializeComponent();

       for (int i = 0; i < 4; i++)
       {
            for(int j = 0; j < 7; j++)
            {
                if (j == 0)
                {
                    var txtbox = new TextBox();
                    txtbox.Location = new Point(163 + (i * 220), (36));
                    txtbox.Name = i + "Names";
                    txtbox.Text = txtbox.Name;
                    txtbox.Width = 40;
                    this.Controls.Add(txtbox);                       
                }
                else if (j>0 && j<6)
                {                      
                    var extratxt = new TextBox();
                    extratxt.Location = new Point(163 + (i * 220), (36+ 36 * j));
                    extratxt.Name = i + "Input" + j;
                    extratxt.Text = extratxt.Name;
                    extratxt.Width = 70;
                    this.Controls.Add(extratxt);

                    var percentbox = new Label();
                    percentbox.Location = new Point(163 + (90+ i * 220), (36 + 36 * j));
                    percentbox.Name = i + "Percent" + j;
                    percentbox.Text = percentbox.Name;
                    percentbox.Width = 50;
                    this.Controls.Add(percentbox);

                    var gradebox = new Label();
                    gradebox.Location = new Point(163 + (150 + i * 220), (36 + 36 * j));
                    gradebox.Name = i + "Grade" + j;
                    gradebox.Text = gradebox.Name;
                    gradebox.Width = 50;
                    this.Controls.Add(gradebox);
                }
                else
                {
                    var totals = new Label();
                    totals.Location = new Point(163 + (i * 220), (36 + 36 * j));
                    totals.Name = i + "Total";
                    totals.Text = totals.Name;
                    totals.Width = 40;
                    this.Controls.Add(totals);
                    ...
                }
                ...
            }
        }
    }
}

1 个解决方案

#1

Hope I understand you correctly.
Basically, your difficulty is how to access the instance stored in list of the dynamically create controls by their name, right?

希望我理解正确。基本上，您的难点是如何通过名称访问存储在动态创建控件列表中的实例，对吧？

Well, you can use .FirstOrDefault() to select instance with a specific property. For example,

好吧，您可以使用.FirstOrDefault（）来选择具有特定属性的实例。例如，

private void Form1_Load(object sender, EventArgs e)
{
    List<TextBox> tbList = new List<TextBox>();
    for (int i = 0; i < 3; i++)
    {
        TextBox tb = new TextBox();
        tb.Text = "Test" + i.ToString();
        tb.Name = "TextBox" + (i + 1).ToString();
        tb.Location = new Point(0, 25 * i);
        tb.Tag = i;
        tbList.Add(tb);
        this.Controls.Add(tb);
    }
    var tb2 = tbList.FirstOrDefault(tb => tb.Name == "TextBox2");
    if (tb2 != null)
        tb2.Text = "Modified text";

    var sum = tbList.Sum(tb => (int)tb.Tag);
}

#1