textBox编号格式为0000.00 [英] textBox number formating to 0000.00

问题描述

我希望表单textBox2可以只键入以下格式的值：

I want that to forms textBox2 would be possible to type only values in such format:

000.00
87979845.00

我的意思是无限数字，然后是十进制/点，后面只有两个数字。到目前为止，除了检查点后面有多少个数字之外，我还有其他所有内容......

I mean unlimited digit number, then decimal/dot and only two numbers after it. So far I have everything except check of how many numbers after the dot is...

private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar >= '0' && e.KeyChar <= '9' || e.KeyChar == '.' && !textBox2.Text.Contains(".") || e.KeyChar == '\b')
    {
        e.Handled = false;
    }
    else
    {
        e.Handled = true;
    }
}

如何在此代码中实现？

How I could implement that in this code?

推荐答案

修改你的功能如下......

Modify your function like below...

private void textBox2_KeyPress(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar >= '0' && e.KeyChar <= '9' || e.KeyChar == '.' && !textBox2.Text.Contains(".") || e.KeyChar == '\b')
    {
        if (textBox2.Text.Contains("."))
        {
            string[] txt = textBox2.Text.Split('.');

            if (txt[1].Length > 1)
            {
                if (e.KeyChar >= '0' && e.KeyChar <= '9')
                {
                    e.Handled = true;
                }
            }
        }
        else
        {
            e.Handled = false;
        }
    }
    else
    {
        e.Handled = true;
    }
}

让我知道它是否有效......

Let me know if it works or not...

你没有提供足够的信息......一些国家使用不同的十进制值格式，例如：

英语： 100.23

波兰语： 100,23



你知道我的意思吗，现在？



请参考以下链接：

http://msdn.microsoft.com/en-us/library/aa292205%28v=vs.71%29.aspx [ ^ ]

http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo。 aspx [ ^ ]



我认为您正在寻找数字验证器。请参阅过去的答案：仅允许数字字符进入文本框 [ ^ ]



但是如果你想为TextBox添加新功能并将其用作MaskedTextBox，请参考以下内容：

wpf中的ContentStringFormat [ ^ ]

如何在文本框中验证用户输入的字符串？ [ ^ ]

将掩盖的输入显示到文本框中 [ ^ ]



CP文章：

数字文本框：允许用户输入数字数据简单的方法 [ ^ ]

You did not provide enough information... Some countries uses different format for decimal values, for example:
English: 100.23
Polish: 100,23

Do you know what i mean, now?

Please, refer below links:
http://msdn.microsoft.com/en-us/library/aa292205%28v=vs.71%29.aspx[^]
http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo.aspx[^]

I think you are looking for numeric validator. Please, see past answer: allow Only numeric Characters into Textbox[^]

But if you want to add new functionality to TextBox and use it as MaskedTextBox, please, refer these:
ContentStringFormat in wpf[^]
How can I validate user entered string in textbox?[^]
showing masked nput into Textbox[^]

CP article:
Numeric TextBox : Allow your users to enter numeric data the easy way[^]

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