十进制值 [英] Decimal value

问题描述

我有一个文本框.如何使文本框仅接受小数点后两位数字，尽管在数据库中，该值包含小数点后两位以上的数字?

如果输入5，则应为5.00.
类似地:
对于5.1，应为5.10
对于5.1234，它应为5.12

希望您能为我提供解决方案.

Hi,
I have a textbox. How can I make a textbox to accept only two digits after the decimal, although in the database, the value contains more than two digits after the decimal?

If I enter 5, it should take as 5.00.
Similarly:
for 5.1 it should take as 5.10
for 5.1234 it should take as 5.12

Hope you''ll suggest me a solution.

推荐答案

示例

double p = 123456.12345678;
            double p1 = Math.Round(p,2);
            MessageBox.Show(p1.ToString());

如果有帮助，请投票并接受答案.

Please vote and Accept Answer if it Helped.

如果您要使用Windows窗体应用程序.

内部TextBox离开事件

If you are asking for Windows forms apps.

Inside TextBox Leave Event

private void textBox1_Leave(object sender, System.EventArgs e)
{
    TextBox1.Text = double.Parse(TextBox1.Text).ToString("f2");

}

如果有帮助，请 投票 和 接受答案 .

Please vote and Accept Answer if it Helped.

如果有帮助数据库中的十进制数，那么它只是一个小数而未应用任何格式.如果只希望看到两个小数，则在检索该值时以及在显示该值之前，请切掉所有其他小数.

If it''s a decimal in the database, then it''ll simply be a fractional number without any formatting applied. If you only want to see two decimals, then cut off all other decimals when retrieving the value and before displaying it.

这篇关于十进制值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！