Question

我想在字符串中使用字符串操作，而不是将字符串带入richTextBox。我的程序目前在richTextBox中进行字符串操作。如何在不使用richTextBox的情况下执行相同的操作？

我遇到的问题是当在richTextBox中更改某些内容时会触发操作。因此，当某些内容发生变化时，程序将扫描富文本框中的html标签并简单地删除所有这些内容。如果不使用richTextBox，怎么能这样做，大概更快？

private void richTextBox1_TextChanged(object sender, EventArgs e)
    {
        int token = -1;
        int token2 = -1;

        foreach (string line in richTextBox1.Lines)
        {
            if (line.Contains("<") || line.Contains(">"))
            {
                while (richTextBox1.Text.IndexOf("<") > -1 && richTextBox1.Text.IndexOf(">") > -1)
                {
                    token = richTextBox1.Text.IndexOf("<");
                    token2 = richTextBox1.Text.IndexOf(">", token) + 1;
                    string clip = richTextBox1.Text.Substring(token, token2 - token);
                    richTextBox1.Select(token, token2 - token);
                    if (richTextBox1.SelectedText.Length > 0)
                    {
                        richTextBox1.Text = richTextBox1.Text.Replace(richTextBox1.Text.Substring(richTextBox1.SelectionStart, richTextBox1.SelectionLength), " ");
                    }
                    richTextBox1.AppendText(" ");
                }
            }
        }
    }

Answer 1

i think you can write function to check text entered in richtext box and call when required.

    private void richTextBox1_TextChanged(object sender, EventArgs e)
        {
           if(your condition)
            {
            CheckRichTextEntered(richTextBox1.Text)
            }
        }


        public void CheckRichTextEntered(string RichBoxText)
        {
                int token = -1;
                int token2 = -1;

                foreach (string line in richTextBox1.Lines)
                {
                    if (line.Contains("<") || line.Contains(">"))
                    {
                        while (richTextBox1.Text.IndexOf("<") > -1 && richTextBox1.Text.IndexOf(">") > -1)
                        {
                            token = richTextBox1.Text.IndexOf("<");
                            token2 = richTextBox1.Text.IndexOf(">", token) + 1;
                            string clip = richTextBox1.Text.Substring(token, token2 - token);
                            richTextBox1.Select(token, token2 - token);
                            if (richTextBox1.SelectedText.Length > 0)
                            {
                                richTextBox1.Text = richTextBox1.Text.Replace(richTextBox1.Text.Substring(richTextBox1.SelectionStart, richTextBox1.SelectionLength), " ");
                            }
                            richTextBox1.AppendText(" ");
                        }
                    }
                }
        }

如何摆脱C＃

1 个答案: