Question

我正在使用Visual Studio 2013开发一个C＃程序，它将比较两个文本文件。有两个TextBox（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的行。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的运行速度非常慢，我每秒只增加约50。到目前为止，我使用的文件每行不超过3个字符，没有特殊符号。

如何加快这个过程？

Answer 1

感谢一些有用的用户，我已经解决了这个问题。

要解决此问题，您只需将TextBox的行复制到数组即可。这样，每次执行for循环都不会访问整个TextBox，而只是访问原始字符串数据，这就是这种情况下所需的全部内容。

如何使用for循环加速数组中的字符串比较？

1 个答案: