得到帮助..在编码 [英] got help.. in coding

问题描述

private void textBox4_TextChanged(object sender, EventArgs e)
        {
            double rank;
            if(Double.TryParse(textBox4.Text, out rank))
            {
                if (rank < TimeSpan.Parse("00:00:15.200").TotalMilliseconds) { textBox5.Text = "Excellent"; }
                else if (rank >= TimeSpan.Parse("00:00:15.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:16.100").TotalMilliseconds) { textBox5.Text = "Above Average"; }
                else if (rank >= TimeSpan.Parse("00:00:16.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:18.100").TotalMilliseconds) { textBox5.Text = "Average"; }
                else if (rank >= TimeSpan.Parse("00:00:18.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:19.300").TotalMilliseconds) { textBox5.Text = "Below Average"; }

                else if (rank >= TimeSpan.Parse("00:00:19.300").TotalMilliseconds){ textBox5.Text = "Poor"; }
                else { textBox5.Text = "Unknown - Error"; }
            }
        }

i已经为我的代码做了这个..但是当我的text5.text保持空白时出现了问题..我确实尝试将它放在按钮中但没有运气..它保持不变..真的..请帮助..



例如，00：00：15：200 ..它是秒表值..这是我从其他形式转移的......

i already did this for my code.. but the problem occurred when my text5.text remained blank.. i did try to put it in button but no luck.. it remained the same.. really.. please help..

for example, 00:00:15:200.. it is stopwatch value.. this is wat i transferred from other form...

推荐答案

您输入textbox4的值不是double，因此

The value you are entering into textbox4 is not a double, so

Double.TryParse(textBox4.Text, out rank)

将始终返回 false - 并且你的textBox5将保持空白。



您正在将输入与

will always return false - and your textBox5 will remain blank.

You are comparing the input against things like

TimeSpan.Parse("00:00:15.200").TotalMilliseconds

所以输入必须是一个表示毫秒的双倍...例如尝试输入15200

或

将if语句更改为

so the input must be a double that represents milliseconds ... e.g. try entering 15200
OR
change the if statement to

if (Double.TryParse(TimeSpan.Parse(textBox4.Text).TotalMilliseconds.ToString(), out rank))

编辑 - 修正了编译错误 - 看突出显示的代码



[最终编辑...]这是我用来试验你的问题的代码。我添加了几行，如果使用了所有冒号，将输入更改为正确的格式。



换句话说，如果您输入格式00：00：15：200或00：00：15.200它仍然可以工作。

EDIT - fixed the compile error - see highlighted code

[Final Edit ...] This is the code I used to try out your problem. I've added a couple of lines that will change the input to the correct format if all colons have been used.

In other words, if you enter in the format " 00:00:15:200" or " 00:00:15.200" it will still work.

private void button1_Click(object sender, EventArgs e)
{
    double rank;

    string CheckFormatOfInput = textBox4.Text.Trim();
    // could use a regex here but I'm keeping it very simple
    CheckFormatOfInput = CheckFormatOfInput.Remove(8, 1).Insert(8, ".");

    if (Double.TryParse(TimeSpan.Parse(CheckFormatOfInput).TotalMilliseconds.ToString(), out rank))
    {
        if (rank < TimeSpan.Parse("00:00:15.200").TotalMilliseconds)
        {
            textBox5.Text = "Excellent";
        }
        else if (rank >= TimeSpan.Parse("00:00:15.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:16.100").TotalMilliseconds)
        {
            textBox5.Text = "Above Average";
        }
        else if (rank >= TimeSpan.Parse("00:00:16.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:18.100").TotalMilliseconds)
        {
            textBox5.Text = "Average";
        }
        else if (rank >= TimeSpan.Parse("00:00:18.200").TotalMilliseconds && rank < TimeSpan.Parse("00:00:19.300").TotalMilliseconds)
        {
            textBox5.Text = "Below Average";
        }
        else if (rank >= TimeSpan.Parse("00:00:19.300").TotalMilliseconds)
        {
            textBox5.Text = "Poor";
        }
        else
        {
            textBox5.Text = "Unknown - Error";
        }
    }

}

好的 - 让我们看一下。

问题是文本框中的值不是双倍的：它是一个秒表值，你可以从另一个表单获得并通过文本框传输 - 这是一件很奇怪的事情，但没关系。

因此将其解析为时间跨度：

OK - let's look at it.
The problem is that the value in your textbox is not a double: it's a stopwatch value, which you get from a different form and transfer via a textbox - which is an odd thing to do, but never mind.
So parse it as a timespan:

TimeSpan rank;
if (TimeSpan.TryParseExact(textBox4.Text, "hh\\:mm\\:ss\\:fff", null, out rank))
    {
    ...
    }

比较排名与Timespan值直接：

And compare rank against your Timespan values directly:

if (rank < TimeSpan.Parse("00:00:15.200")) { textBox5.Text = "Excellent"; }

Mistyped。 for： - OriginalGriff [/ edit]

[edit]Mistyped "." for ":" - OriginalGriff[/edit]

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