Question

我有一个多行字符串文本，每行都有一个由一些文字或空格字符连接的电话号码（字符不是英文）所以我想逐行检查文本，每行提取电话号码和把它保存在一个富文本框我面临一个问题，那就是如何从字符数组中删除除数字以外的任何元素..任何帮助!!

using(StringReader reader=new StringReader(richTextBox1.Text))
            {
                string line = string.Empty;
                do
                {
                    line = reader.ReadLine();
                    if (line != null)
                    {
                        // Checking if the line contains things other than letters
                        char[] buffer = line.Replace(" ", string.Empty).ToCharArray();
                        for (int i = 0; i < buffer.Length; i++)
                        {
                            if (!char.IsNumber(buffer[i]))
                            {
                                // Delete any letters or spacial characters
                            }
                        }

                        Regex rx = new Regex("^[730-9]{9}$");
                        if (rx.IsMatch(line))
                        {
                            richTextBox2.Text+=line;
                        }

                    }
                } while (line != null);

            }}

Answer 1

Char.IsDigit应该有所帮助：

string lineWithoutNumbers = line.Where(x => Char.IsDigit(x));

在你的情况下，像这样：

using(StringReader reader=new StringReader(richTextBox1.Text))
        {
            string line = string.Empty;
            do
            {
                line = reader.ReadLine();
                if (line != null)
                {
                    // Checking if the line contains things other than letters
                    line = new String(line.Where(x => Char.IsDigit(x)).ToArray()); //here, we remove all non-digits from the line variable

                    Regex rx = new Regex("^[730-9]{9}$");
                    if (rx.IsMatch(line))
                    {
                        richTextBox2.Text+=line;
                    }

                }
            } while (line != null);

        }}

从字符数组

1 个答案: