arrays - 如何使用 for 循环加速数组中的字符串比较？

Question

我正在使用 Visual Studio 2013 开发一个 C# 程序来比较两个文本文件。有两个文本框(dataTextOne 和 dataTextTwo)包含每个文件的数据。有一个按钮 (findNextLineButton) 用于检查两个文本框之间的下一个不匹配行。以下是单击 findNextLineButton 时运行的代码。

private void findNextLineButton_Click(object sender, EventArgs e)
{
    //set the starting point of the search to the lowest currently selected line of the two text boxes.
    int start = Math.Min(dataTextOne.GetLineFromCharIndex(dataTextOne.GetFirstCharIndexOfCurrentLine()), dataTextTwo.GetLineFromCharIndex(dataTextTwo.GetFirstCharIndexOfCurrentLine())) + 1;
    //set the ending point of the search to the length of the shortest text box.
    int length = Math.Min(dataTextOne.Lines.Length, dataTextTwo.Lines.Length);

    //loop through the lines of each textbox, stopping at the first point where the corresponding lines differ in value.
    for (int i = start; i < length; i++)
    {
        if (dataTextOne.Lines[i] != dataTextTwo.Lines[i])
        {
            //selects and scrolls to the non-matching text.
            dataTextOne.Focus();
            dataTextTwo.Focus();
            dataTextOne.SelectionStart = dataTextOne.GetFirstCharIndexFromLine(i);
            dataTextOne.SelectionLength = dataTextOne.Lines[i].Length;
            dataTextOne.ScrollToCaret();
            dataTextTwo.SelectionStart = dataTextTwo.GetFirstCharIndexFromLine(i);
            dataTextTwo.SelectionLength = dataTextTwo.Lines[i].Length;
            dataTextTwo.ScrollToCaret();
            return;
         }
    }

    //in the case that the method has not yet returned, informs the user that no ingcongruities were found.
    MessageBox.Show("Could not find incongruous line.");
}

这段代码的问题在于它运行得非常慢，i 每秒只增加大约 50。到目前为止，我一直使用的文件每行不超过 3 个字符，并且没有特殊符号。

我怎样才能加快这个过程？

Answer 1

感谢一些有用的用户，我已经修复了这个问题。

要解决这个问题，您只需将文本框的行复制到一个数组中。这样，您无需在每次执行 for 循环时访问整个 TextBox，而只需访问原始字符串数据，这就是本例中所需的全部内容。