检查TextBox中的用户输入数字?请帮忙 :) [英] Checking user input in a TextBox for numbers?? help please :)

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问题描述

大家好,


我遇到了以下问题的困难,这让我疯狂地试图寻找解决方案,我一直在这么多的论坛和网络上搜索,但没有任何帮助。


 


基本上在我的Windows Phone 7应用程序中,我有一个文本框供用户输入其重量lbs,但如果用户输入除int之外的任何内容,则整个程序崩溃。 如何添加一些用于检查用户输入内容的代码,如果
是一个数字,它执行我想要的计算,但除了数字之外的任何内容都会显示"请仅输入一个数字"。消息类型。


这听起来很简单,但我似乎无法弄明白。


 


请帮忙!! :)


 


非常感谢


 


<保罗

解决方案

检查
InputScope
,并确保使用InputScope = TelephoneNumber,它只允许数值。


Hi all,

I'm having difficulties with the following problem and it's driving me crazy trying to find a solution, I've been on so many forums and web searches but nothing is helping.

 

Basically in my Windows Phone 7 app I have a textbox for the user to enter in their weight in lbs, but if the user inputs anything other than in int then the whole program crashes.  How do I add some code that checks what the user has inputted and if it is a number it does the calculation I want it to do, but anything other than a number displays a "please enter a number only please" type of message.

It souds simple, but Ijust can't seem to figure it out.

 

Please help!! :)

 

Many thanks

 

Paul

解决方案

Check the InputScope for the text boxes and make sure yo use InputScope = TelephoneNumber which allows only numeric values.


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