Sting to Bits conversion

Antonio

Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #1

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1432

Peter Bromberg [C# MVP]

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #2

Antonio

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #3

Peter Bromberg [C# MVP]

Then find a Regular expression match string for IP Addresses and plug it in.
There are many good examples, all you need to do is google or MSN Search
"Regex" "IP address".

Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Hello, everyone.
>
I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?
>
Thanks,
>
Antonio

Aug 6 '06 #4

Antonio

Thank you for the suggestion.
"Peter Bromberg [C# MVP]" wrote:

Then find a Regular expression match string for IP Addresses and plug it in.
There are many good examples, all you need to do is google or MSN Search
"Regex" "IP address".

Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter
>
--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com
>
>
>
>
"Antonio" wrote:
>
Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #5

Antonio

Why using newsgroups and ask questions to experts, when you can "google" it?

"Peter Bromberg [C# MVP]" wrote:

Then find a Regular expression match string for IP Addresses and plug it in.
There are many good examples, all you need to do is google or MSN Search
"Regex" "IP address".

Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter
>
--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com
>
>
>
>
"Antonio" wrote:
>
Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #6

Peter Bromberg [C# MVP]

Antonio,
That's certainly a valid question. Let me try to answer it with a 4,000 year
old quote from Confucius:
"Give a man a fish, and you feed him for a day.
Teach a man to fish, and you feed him for a lifetime"

Cheers,
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Why using newsgroups and ask questions to experts, when you can "google" it?

"Peter Bromberg [C# MVP]" wrote:

Then find a Regular expression match string for IP Addresses and plug it in.
There are many good examples, all you need to do is google or MSN Search
"Regex" "IP address".

Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....
>
Antonio
>
"Peter Bromberg [C# MVP]" wrote:
>
Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Hello, everyone.
>
I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?
>
Thanks,
>
Antonio

Aug 6 '06 #7

Antonio

and the 2006 answer is: How can you teach a man to fish, if he doesn't know
how to progressivly setup the fishing equipment? What comes first.

Your answer to direct me to pages that don't even mention IP addresses or
bytes conversion, and it doesn't give me an example, doesn't really help me
understand the logic behind these controls and what I can do with them.

As you can convert string to integer, you don't need a plug-in, but
understand how to format the code to convert string to byte, which is a
feature in VS.

"Peter Bromberg [C# MVP]" wrote:

Antonio,
That's certainly a valid question. Let me try to answer it with a 4,000 year
old quote from Confucius:
"Give a man a fish, and you feed him for a day.
Teach a man to fish, and you feed him for a lifetime"

Cheers,
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Why using newsgroups and ask questions to experts, when you can "google" it?

"Peter Bromberg [C# MVP]" wrote:

Then find a Regular expression match string for IP Addresses and plug it in.
There are many good examples, all you need to do is google or MSN Search
"Regex" "IP address".
>
Peter
>
--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com
>
>
>
>
"Antonio" wrote:
>
The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter
>
--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com
>
>
>
>
"Antonio" wrote:
>
Hello, everyone.

I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #8

Regex is a little overkill for what you're doing; how about:

bool IsValidIP(string input)
{
string[] split = input.Split('.');
int i = 0;
byte b;

if (split.Length == 4)
{
for (; i < split.Length; ++i)
{
if (!Byte.TryParse(split[i], out b))
{
break;
}
}
}

return (i == 4);
}
"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator control.
E-Mail and URL are the only computer-related options. The rest are phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to the IP
address option.
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Hello, everyone.
>
I have textboxes in which users enter IP Addresses. I would like to check
what they entered when they press the Submit button to make sure that they
entered an IP that's between 0 and 255 and display an error message if they
entered any number >255. Can someone give me an example?
>
Thanks,
>
Antonio

Aug 6 '06 #9

chanmm

Can you declear a byte from the beginning like:

private void button1_Click(object sender, EventArgs e)
{
byte bteIP;
if (IsNumeric(textBox1.Text))
{
bteIP = System.Convert.ToByte(textBox1.Text);
if ((bteIP >= 0) && (bteIP <= 255))
{
//Put your on error message
}
}
}

Validator is web control and not winform control. So if you are doing
Winform app then forget about it.

chanmm
"Antonio" <An*****@discussions.microsoft.comwrote in message
news:B7**********************************@microsof t.com...

and the 2006 answer is: How can you teach a man to fish, if he doesn't
know
how to progressivly setup the fishing equipment? What comes first.

Your answer to direct me to pages that don't even mention IP addresses or
bytes conversion, and it doesn't give me an example, doesn't really help
me
understand the logic behind these controls and what I can do with them.

As you can convert string to integer, you don't need a plug-in, but
understand how to format the code to convert string to byte, which is a
feature in VS.

"Peter Bromberg [C# MVP]" wrote:

>Antonio,
That's certainly a valid question. Let me try to answer it with a 4,000
year
old quote from Confucius:
"Give a man a fish, and you feed him for a day.
Teach a man to fish, and you feed him for a lifetime"

Cheers,
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

Why using newsgroups and ask questions to experts, when you can
"google" it?

"Peter Bromberg [C# MVP]" wrote:

Then find a Regular expression match string for IP Addresses and plug
it in.
There are many good examples, all you need to do is google or MSN
Search
"Regex" "IP address".

Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com

"Antonio" wrote:

The IP address is not an option on the RegularExpression Validator
control.
E-Mail and URL are the only computer-related options. The rest are
phone
numbers, postal codes, zip code, SS#....

Antonio

"Peter Bromberg [C# MVP]" wrote:

Just use a RegularExpression Validator on the field and set it to
the IP
address option.
Peter
>
--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com
>
>
>
>
"Antonio" wrote:
>
Hello, everyone.

I have textboxes in which users enter IP Addresses. I would
like to check
what they entered when they press the Submit button to make
sure that they
entered an IP that's between 0 and 255 and display an error
message if they
entered any number >255. Can someone give me an example?

Thanks,

Antonio

Aug 6 '06 #10

Larry Lard

KH wrote:

Regex is a little overkill for what you're doing; how about:

bool IsValidIP(string input)

In Framework 2.0 there IPAddress.TryParse already implemented for us!
Earlier we can use IPAddress.Parse and catch any FormatException.

--
Larry Lard
la*******@googlemail.com
The address is real, but unread - please reply to the group
For VB and C# questions - tell us which version

Aug 7 '06 #11

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