如何舍入小数答案 [英] how to round of decimal answer

问题描述

如何回答

How to round of answer

decimal a = decimal.Parse(Label20.Text);
        decimal b = decimal.Parse(Label15.Text);
        decimal c = b - a;

        Label22.Text = c.ToString();

推荐答案

Math.Round(Convert.ToDecimal(Label20.Text)), 2);

或

OR

double doubleNumber;
doubleNumber= 17843.1234;
doubleNumber.ToString("F2",CultureInfo.InvariantCulture));
// Displays 17843.12

请参阅我对该问题的评论。我看不到你需要四舍五入的地方。相反，您需要正确的字符串格式，以获得舍入值。请参阅：

https：// msdn .microsoft.com / zh-CN / library / fzeeb5cd％28v = vs.110％29.aspx [ ^ ]，

https://msdn.microsoft.com/en-us/library/0c899ak8%28v=vs.110%29.aspx [ ^ ]。

-SA

Please see my comment to the question. I don't see where you need rounding. Rather, you need proper string formatting, to get rounded value. Please see:
https://msdn.microsoft.com/en-us/library/fzeeb5cd%28v=vs.110%29.aspx[^],
https://msdn.microsoft.com/en-us/library/0c899ak8%28v=vs.110%29.aspx[^].

—SA

阅读文档：Decimal.Round Method（Decimal） [ ^ ]

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