IsNumeric（）问题 [英] IsNumeric() Problem
问题描述
我有VB.Net和IsNumeric（）函数的问题因为它总是
返回FALSE，即使字符串可以是数字。
还有一件奇怪的事情，相同的程序（这是一个测试）运行良好的
一个并没有运行另一个。
程序测试非常简单，只是一个带有文本框和按钮的表单。
文本框有一个验证规则，检查插入字符串是否为
数值，即'所有。
MsgBox（IsNumeric（TextBox1.Text））----<<<<即使TextBox1的
背景为111，也总是写错FALSE
感谢您的建议，Michele
嗨Michele，
我已经按照你指定的方式对它进行了测试，当''111'和
$时它返回true 1a11时b $ b为假。我不知道该建议什么，除了重新安装
.net框架和vs .net。
Bernie Yaeger
" michele" < MI ***** @ zenna.it>在留言中写道
news：ut ************** @ TK2MSFTNGP12.phx.gbl ...我遇到了问题VB.Net和IsNumeric（）函数因为它总是返回FALSE，即使字符串也可以是数字。
还有一个奇怪的事情，同一个程序（它是一个测试）运行良好
在一个，并没有运行另一个。
程序测试非常简单，只是一个带有文本框和按钮的表单。
文本框有一个验证规则，检查插入字符串是否为
数值，即全部。
MsgBox（IsNumeric（TextBox1.Text））----<<<<即使TextBox1的上下文是111，也总是写错了
感谢您的建议，Michele
Michele，
我同意Bernie，运行该代码没有问题。您可以尝试
进行文本框信息的转换。如果你收到错误，你可能会尝试转换变量以查看
：
dblVar = CDbl（txtInput.Text）
柯蒂斯
" Bernie Yaeger" <是***** @ optonline.net>在消息中写道
新闻：％2 **************** @ TK2MSFTNGP14.phx.gbl ...Hi Michele ，
我已经按照你指定的方式对它进行了测试，当''111''时它返回true，而当''1a11'时它返回false。我不知道该建议什么，除了重新安装.net框架和vs .net。
Bernie Yaeger
michele < MI ***** @ zenna.it>在消息中写道
新闻：ut ************** @ TK2MSFTNGP12.phx.gbl ...我遇到了VB.Net和IsNumeric（）函数因为它总是
返回FALSE，即使字符串可以是一个数字。
还有一个奇怪的事情，同一个程序（它是一个测试）在一个上运行良好
并且没有运行另一个。
程序测试非常简单，只是一个带有文本框和
按钮的表单。文本框有一个验证规则，用于检查插入
字符串是否为数字值，即全部。
MsgBox（IsNumeric（TextBox1.Text））----< ;<<<即使
TextBox1的上下文是111，也总是写错了
感谢您的建议，Michele
尝试MsgBox（IsNumeric（Trim
I have a problem with VB.Net and IsNumeric() function because it always
returns FALSE even the string can be a number.
There is another strange thing, the same program (it is a test) runs good on
one and doesn''t run an another one.
The program test is very simple, just a form with a text box and a button.
The text box has a validation rule that check if the insert string is a
numeric value, that''s all.
MsgBox( IsNumeric(TextBox1.Text)) ----<<<< always write FALSE even if the
contenet of TextBox1 is "111"
Thanks in advice, Michele
Hi Michele,
I have tested it exactly as you specify, and it returns true when ''111'' and
false when ''1a11''. I don''t know what to suggest, other than a reinstall of
the .net framework and vs .net.
Bernie Yaeger
"michele" <mi*****@zenna.it> wrote in message
news:ut**************@TK2MSFTNGP12.phx.gbl...I have a problem with VB.Net and IsNumeric() function because it always
returns FALSE even the string can be a number.
There is another strange thing, the same program (it is a test) runs good
on one and doesn''t run an another one.
The program test is very simple, just a form with a text box and a button.
The text box has a validation rule that check if the insert string is a
numeric value, that''s all.
MsgBox( IsNumeric(TextBox1.Text)) ----<<<< always write FALSE even if
the contenet of TextBox1 is "111"
Thanks in advice, Michele
Michele,
I agree with Bernie, I have no problem running that code. You might try
doing a cast of the textbox info. You might try to cast the variable to see
if you get an error from that:
dblVar = CDbl(txtInput.Text)
Curtis
"Bernie Yaeger" <be*****@optonline.net> wrote in message
news:%2****************@TK2MSFTNGP14.phx.gbl...Hi Michele,
I have tested it exactly as you specify, and it returns true when ''111''
and false when ''1a11''. I don''t know what to suggest, other than a
reinstall of the .net framework and vs .net.
Bernie Yaeger
"michele" <mi*****@zenna.it> wrote in message
news:ut**************@TK2MSFTNGP12.phx.gbl...I have a problem with VB.Net and IsNumeric() function because it always
returns FALSE even the string can be a number.
There is another strange thing, the same program (it is a test) runs good
on one and doesn''t run an another one.
The program test is very simple, just a form with a text box and a
button. The text box has a validation rule that check if the insert
string is a numeric value, that''s all.
MsgBox( IsNumeric(TextBox1.Text)) ----<<<< always write FALSE even if
the contenet of TextBox1 is "111"
Thanks in advice, Michele
Try MsgBox(IsNumeric(Trim
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