C# 如何仅解析当前的字母/字符？

守则：

private void richTextBox1_MouseMove(object sender, MouseEventArgs e)
{
    // Obtain the character index where the user clicks on the control.
    int positionToSearch = richTextBox1.GetCharIndexFromPosition(new Point(e.X, e.Y));
    string word = richTextBox1.Text.Substring(positionToSearch);
    words.Add(word); // to get the specific word the mouse is on !
}

问题是，列表中的每个单词在结尾之前还包含文件的其余内容。 当鼠标在richTextBox中时，我希望列表中有字母/字符 当有空格/r/n和文件的其余内容时，每次我移动一个单词

这是单词列表内容的一个示例：

例如，在索引0中，我看到：

Satellite Weather Europe, Weather Forecast, Rainfall, Clouds, Sun in Europe - Source: SAT24.com" /><meta http-equiv="X-UA-Compatible" content="IE=edge" /><meta 

---

欧洲卫星天气，天气预报，降雨，云层，欧洲的太阳-来源：SAT24.com“/>看看这是否有帮助，这只抓住了当前的特征

// Obtain the character index where the user clicks on the control.
int positionToSearch = richTextBox1.GetCharIndexFromPosition(new Point(e.X, e.Y));
char currentChar = richTextBox1.Text[positionToSearch];// Get the character the cursor is on.
words.Items.Add(currentChar); // Add the current character to our list.

如果（positionToSearch>-1）{string word=richTextBox1.Text.Substring（positionToSearch，1）；…}

，您会发现将集合从字符串更改为字符更有用。

// Obtain the character index where the user clicks on the control.
int positionToSearch = richTextBox1.GetCharIndexFromPosition(new Point(e.X, e.Y));
char currentChar = richTextBox1.Text[positionToSearch];// Get the character the cursor is on.
words.Items.Add(currentChar); // Add the current character to our list.