数值，字母数值，字母，金额验证 [英] Numeric, Alpha Numeric ,Alpha, Amount validations

问题描述

你好

我想知道如何在Textbox上的VB.Net中进行以下验证，例如，我具有如下形式:

名称:文本框(我只想在此处进行Alpha验证

地址:文本框(我想在此处进行字母数字验证

数字:文本框(我只想在此处进行数字验证

月费:我想在这里进行金额验证，例如10,000之类的逗号，小数点

请帮我

Hello

I want know how to do following validations in VB.Net on Textbox for eg i have form like this :

Name : textbox(i want only Alpha Validation Here

Address : Textbox (i want Alpha Numeric Validation Here

Number : Textbox (i want Only Numeric validation here

Monthly Fees : i want Amount validation here like 10,000 like commas , Decimal Points

Kinly Please Help Me

推荐答案

首先，将名称仅验证为Alpha是一个糟糕的主意-您不能保证名称仅包含AZ，az
非西方人的名字，白痴的父母，合法的名字更改都可以在该范围之外添加字符

地址:同样的问题.

但是数字很容易:integer.TryParse或double.TryParse将检查字符串并将其转换为允许本地数字格式设置的数字:请记住，不是唯一的格式为1,000.345:1.234567在许多地方都是合法的.

First off, validating names to alpha only is a poor idea - you can''t guarantee that names will only contain A-Z, a-z
Non-Western names, idiot parents, legal change-of-names can all add characters outside that range

Address: same problem.

But numbers are easy: integer.TryParse or double.TryParse will check and convert strings to numbers allowing for local number format settings: remember that 1,000.345 is not the only format: 1.234,567 is legal in many places.

添加您自己的功能以检查您想要的任何内容.


私有函数isvalidnumeric(ByVal pobject作为对象)作为布尔值
Dim linti作为整数
Dim lstrnumeric As String ="0123456789.，"

对于i = 1到Len(pobject)
如果InStr(lstrnumeric，Mid(pobject，i，1))= 0那么
isvalidnumeric = False
退出功能
如果结束
下一个

isvalidnumeric = True
结束功能

add your own function to check whatever you want.


Private Function isvalidnumeric(ByVal pobject As Object) As Boolean
Dim linti As Integer
Dim lstrnumeric As String = "0123456789.,"

For i = 1 To Len(pobject)
If InStr(lstrnumeric, Mid(pobject, i, 1)) = 0 Then
isvalidnumeric = False
Exit Function
End If
Next

isvalidnumeric = True
End Function

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