C# 如何让 StreamReader 在读取“~”时跳过一行

发布于 2025-01-14 02:32:02 字数 1122 浏览 3 评论 0原文

我必须在 Visual Studio 中使用 C# 为学校制作一个 Windows 窗体项目，但我不懂 C# （或真正的一般编程）。我一直在使用教程，但我被困住了。我这样做是为了将多种类型的数据（姓名、电话号码等）输入到一个文本文件中，每个数据都用“~”分隔。我的代码当前使用 StreamReader 将文本文件的每一行放入组合框中，但我希望它只放入“~”符号之前写入的数据，当它检测到它时，它应该跳到下一行。抱歉，如果我解释得不好，我不明白我应该使用的任何术语。

我的代码：

  private void addSkiTimesPupilCB_SelectedIndexChanged(object sender, EventArgs e)
    {
        selectedClass = addSkiTimesPupilCB.SelectedItem.ToString();
    }

    private void addSkiTimes_Load(object sender, EventArgs e)
    {
        try
        {
            StreamReader sr = new StreamReader("pupilDetails.txt");
            string line = sr.ReadLine();

            while (line != null)
                {
                    string[] components = line.Split("~".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                    addSkiTimesPupilCB.Items.Add(line);
                    line = sr.ReadLine();
                }
        }

        catch (Exception ex)
        {
            MessageBox.Show("Error" + ex.Message);
        }
    }

文本文件的格式如下：

姓名〜年龄〜电话号码

如果这意味着什么，我必须输入“using System.IO;”在程序的顶部。

原文

I have to make a windows forms project in visual studio with c# for school, but I don't understand c# (or programming in general really). I've been using tutorials but I'm stuck.
I made it so that multiple types of data - name, phone number, etc, are entered into a text file, with each thing being seperated with a "~". My code currently uses StreamReader to put each line of the text file into a combo box, but I want it to only put data written before the "~" symbol, and when it detects it it should skip to the next line. Sorry if I explained this badly, I don't understand any of the terms I should be using.

My Code:

  private void addSkiTimesPupilCB_SelectedIndexChanged(object sender, EventArgs e)
    {
        selectedClass = addSkiTimesPupilCB.SelectedItem.ToString();
    }

    private void addSkiTimes_Load(object sender, EventArgs e)
    {
        try
        {
            StreamReader sr = new StreamReader("pupilDetails.txt");
            string line = sr.ReadLine();

            while (line != null)
                {
                    string[] components = line.Split("~".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
                    addSkiTimesPupilCB.Items.Add(line);
                    line = sr.ReadLine();
                }
        }

        catch (Exception ex)
        {
            MessageBox.Show("Error" + ex.Message);
        }
    }

The text file is formatted like this:

name~age~phone number

If it means anything, I had to enter "using System.IO;" at the top of the program.

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々眼睛长脚气 2025-01-21 02:32:02

您似乎是在说您只希望 name~age~number 中的 name 出现在组合中

我注意到您在 ~ 上分割了该行code> 但您不使用拆分的结果：

string[] components = line.Split("~".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
addSkiTimesPupilCB.Items.Add(line);
                             ^^^^

如果您在此处放置 components[0]，那么只会看到名称进入组合

You seem to be saying that you want only the name from name~age~number to appear in the combo

I note that you split the line on ~ but you don't use the result of the split:

string[] components = line.Split("~".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
addSkiTimesPupilCB.Items.Add(line);
                             ^^^^

If instead here you put components[0], then that would see just the name going into the combo

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