显示列表< String>在textBox(Winforms)中 [英] Display List<String> in textBox (Winforms)

问题描述

Noob问题...我试图在文本框中显示一个列表...不幸的是，我的代码仅显示了列表中的第一个元素...

Noob question... I'm trying to display a List in a textbox... unfortunately, my code only displays the first element in the list...

    private void Form1_Load(object sender, EventArgs e)
    {
        List<String> vegetables = new List<String>();
        vegetables.Add("tomato");
        vegetables.Add("carrot");
        vegetables.Add("celery");
        vegetables.Add("potato");

        textBox1.Text = displayMembers(vegetables);
    }

    public string displayMembers(List<String> vegetables)
    {
        foreach (String s in vegetables)
        {
            return s.ToString();
        }
        return null;
    }

如何获取文本框以显示所有成员?我的错误在哪里?

How do I get the textBox to display all of the members? Where is my mistake?

推荐答案

一旦您return s.ToString()，该方法的其余部分将停止运行.
一个方法不能返回多个东西.

Once you return s.ToString(), the rest of that method stops running.
A method cannot return multiple things.

您可能想写

someTextBox.Text = String.Join(Environment.NewLine, vegetables);

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