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Ah my apologies for not searching first. Thanks a lot for the link. I just got curious if it would be possible to do that programmatically.
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can u please tell me how i can do this?
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And you'll continue to wait until somebody gets around to it. This is a volunteer only site, and we don't jump just because you want us to.
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I presume you are waiting for some manners because you don't seem to have any.
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Hello everyone,
I've been looking into enterprise development / multi tier devlopment / ... books recenctly, because I want do develop a maintainable, scaleable and professional application (data based). But the problem is that most of these don't include a whole project example.
The thing is I work in a small company so there aren't any 'big' projects to view as example.
Before I start I would want to see some good examples of multi tier development, but also know how to handle source control, best practices for data layer, documentation, ...
Do any of you know interesting articles or have example projects lying around where I can look at?
Or maybe good books with full project examples?
Kind regards
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Sadly the books are poor guidelines and this is a massive topic that most sources seem to glaze over the important parts or down-right neglect them. The only free advice I can give that will fit within a post is:
1) Keep it simple
2) Keep it compartmentalized
3) Don't use session (or caching)
4) Load the least amount of data possible
5) Optimize last
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
Most of this sig is for Google, not ego.
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The word "big" is generally relative. I believe there are several projects in codeproject which certify enough to be called maintainable, scalable etc. Never trust examples in books because they are generally meant for beginners. Instead why don't you go thru cp articles?
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Hi all,
I want to check the email address against SMTP domain verification. I have used the following code.but it's not getting the response from the domains gmail.com,yahoo.com,google .com. so it shows that domain is not valid.
try
{
string[] host = (textBox1.Text.Trim().Split('@'));
string hostname = host[1];
IPHostEntry IPhst = Dns.GetHostByName (hostname);
IPEndPoint endPt = new IPEndPoint(IPhst.AddressList[0], 25);
Socket s = new Socket(endPt.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
s.Connect(endPt);
MessageBox.Show("Exists");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString ());
}
Can anyone tell me the solution for this.
Thanks in advance
swethasri
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What kind of error are you getting.
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
Most of this sig is for Google, not ego.
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The following is the message displayed when tried to check gamil.com,yahoo.com etc.,
"A connection attempt failed because the connected party did not respond propertly after a period of time or established connection failed because connected host failed to respond".
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I think that those SMTP servers only accept connections from known mail servers.
Despite everything, the person most likely to be fooling you next is yourself.
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I have some legacy VB6 code which im converting over to C#, and it seems that strings were implemented very differently in old VB than in the Framework. I get vastly different results from the ported code than I do from an app written in VB and I was wondering if anyone could put their finger on the reason why?
here is the old VB code (pstrResponse is the input to the method):
For i = 1 To Len(pstrResponse)
j = Asc(Mid(pstrResponse, i, 1))
If j > 127 Then
j = j - 128
Mid(pstrResponse, i, 1) = Chr(j)
End If
Next i
Here is my ported C# (input is the input):
char[] charArray = input.ToCharArray();
int bit;
for (int i = 0; i < charArray.Length; i++)
{
bit = (int)charArray[i];
if (bit > 127)
{
bit -= 128;
charArray[i] = (char)bit;
}
}
return new string(charArray);
As you can see, simple code & easy to port but very different results. Any ideas people?
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.NET stores string in Unicode not Ascii and a char is 2 bytes not one I think? Which would mean the -=128 could have a different value in an integer data type?
I don't really know I am just speculating.
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
Most of this sig is for Google, not ego.
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Ennis Ray Lynch, Jr. wrote: Which would mean the -=128 could have a different value in an integer data type
Any idea what it could be?
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Maybe, Asc(Mid(pstrResponse, i, 1)) != (int)characters[i];
Try using the System.Text.AsciiEncoder to change the string by ascii bytes only first and see what happens?
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
Happiness in intelligent people is the rarest thing I know. -- Ernest Hemingway
Most of this sig is for Google, not ego.
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Thanks for the pointers. With your help ive managed to solve the problem, but strangly enough I thought id need to convert my input to ASCII using ASCIIEncoding.GetBytes . In actual fact I had to use DefaultEncoding.GetBytes to get the result I was expecting.
here's the working code now:
byte[] byteArray = Encoding.Default.GetBytes(input);
StringBuilder sb = new StringBuilder(byteArray.Length);
byte bit;
for (int i = 0; i < byteArray.Length; i++)
{
bit = (byte)byteArray[i];
if (bit > 127)
{
bit -= 128;
}
sb.Append((char)bit);
}
return sb.ToString();
Thanks again for your help.
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Apparently this still exists in the Microsoft.VisualBasic namespace.
This is the Asc function after being run through reflector - it seems to work OK.
public static int Asc(char theChar)
{
int num;
int num2 = Convert.ToInt32(theChar);
if (num2 < 0x80)
{
return num2;
}
try
{
byte[] buffer;
Encoding fileIOEncoding = Encoding.Default;
char[] chars = new char[] { theChar };
if (fileIOEncoding.IsSingleByte)
{
buffer = new byte[1];
int num3 = fileIOEncoding.GetBytes(chars, 0, 1, buffer,
0);
return buffer[0];
}
buffer = new byte[2];
if (fileIOEncoding.GetBytes(chars, 0, 1, buffer, 0) == 1)
{
return buffer[0];
}
if (BitConverter.IsLittleEndian)
{
byte num4 = buffer[0];
buffer[0] = buffer[1];
buffer[1] = num4;
}
num = BitConverter.ToInt16(buffer, 0);
}
catch (Exception exception)
{
throw exception;
}
return num;
}
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
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Yeah, I saw that but I was attempting to avoid the use of nasty VB namespaces
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J4amieC wrote: nasty VB
If you use the code above you don't need to - it's just that function converted to C#
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
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J4amieC wrote: As you can see, simple code & easy to port but very different results
No, I can't see; what are the results?
Provided you don't care about Unicode, you could use:
System.Text.Encoding.ASCII.GetBytes()
and
System.Text.Encoding.ASCII.GetString()
You could also access the characters in an unsafe context much like your VB code. Something like:
private unsafe static void
ASCIIize
(
string Subject
)
{
fixed ( char* subject = Subject )
{
int* length = (int*) subject - 1 ;
int index = 0 ;
while ( index < *length )
{
*(subject + index) &= (char) 0x7F ;
index++ ;
}
}
return ;
}
(Though I haven't tested this with the problematic characters.)
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