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I think because my process is running to fast this line is not working:
Dim random = New Random(System.DateTime.Now.Millisecond)
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So call the parameterless constructor of the Random class. That uses the Environment.TickCount as the seed. Since there are 10000 ticks in a millisecond, you'll be less likely to get repeated numbers.
If that's still not random enough, or you're using the random numbers for any security-related purposes, then use the System.Security.Cryptography.RandomNumberGenerator class[^] instead.
Public Shared Function NextRandomNumber(ByVal minValue As Integer, ByVal maxValue As Integer) As Integer
Using random As RandomNumberGenerator = RandomNumberGenerator.Create()
Dim b(3) As Byte
random.GetBytes(b)
Dim d As Double = CDbl(BitConverter.ToUInt32(b, 0)) / UInt32.MaxValue
Return CInt(Math.Floor(d * maxValue - minValue) + minValue)
End Using
End Function
See this[^] for details, including my changes in the comments.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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so this function will return 8 digit number with no decimals?
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Correct.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Great. Thank you a lot for help
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Last question. What if I don't want to specify min and max values?
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If you don't specify min and max values, you'll get any 32-bit number returned, which will probably not be 8 digits.
If you always want the number to be 8 digits, and you don't want to pass the parameters, then you can hard-code the min and max values within the function.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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so if I hardcoded like this:
NextRandomNumber(1, 10000000)
it should take care right?
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That would give you a number anywhere from 1 to 7 digits long. If you want the number to always be 8 digits, the min value should be 10000000, and the max should be 100000000.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Hi all,
I am very new in ASP.NET. Actually I code in vb.net and trying to make a database driven dynamic website.
I use to connect database through an XML file where I put the server, database name, user id and password. Then from a class I call these to connect the database. In this class I put the connectionstring which always read the data from the XML file like...
If (IO.File.Exists("db.xml")) Then
Dim DbXmlReader As XmlReader = New XmlTextReader("db.xml")
While DbXmlReader.Read
Dim DbNodeType = DbXmlReader.NodeType
If (DbNodeType = XmlNodeType.Element) Then
If (DbXmlReader.Name = "server") Then
srv = DbXmlReader.ReadInnerXml.ToString
End If
the above code is just a snippet.
Now my questions are...
1. Is the above method possible in ASP.NET to connect with a database ?
2. If not, then how should I connect with the database ?
3. Lastly, is there any good tutorial for beginners that how to create a database driven dynamic website from scratch in ASP.NET?
The tutorial should have all like add a template, adding css, database connection etc.
Thanks in advance.
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Although it would be possible to read the connection details from a custom XML file, why not simply use the built-in support for configuring connection strings[^]?
web.config:
<configuration>
<connectionStrings>
<add
name="MyConnectionString"
providerName="System.Data.SqlClient"
connectionString="server=SERVER-NAME;database=DB-NAME;uid=USER-NAME;pwd=PASSWORD"
/>
</connectionStrings>
</configuration>
Code:
Imports System.Configuration
...
Dim connectionStringSettings As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("MyConnectionString")
Using connection As New SqlConnection(connectionStringSettings.ConnectionString)
...
End Using
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Thanks Richard for your answer. Is there any good tutorial for beginners like me ?
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Since you're just starting, and you don't have any legacy code to support, your best bet is probably to start with ASP.NET MVC. The ASP.NET site[^] has some decent introductory tutorials.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Hi to all
i want to read content of website using asp.net c# and store it to excel sheet.if any one have idea plzz suggest.
thanx in advance.
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Google can get you very far...
C# Web Crawler[^]
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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5th place on Google!
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Yeah But it gives nice documentation and easy also
Please up vote if it helped you
Thanks And Regards
Sibeesh
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i am beginner of asp.net 4.0, need a perfect material to learn perfectly ,especially to create a website using visual studio 2010
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visit below link if you are a true learner
https://www.youtube.com/user/kudvenkat
sumit
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The best source to learn is http://www.pluralsight.com/training[^]
There are heaps of video tutorials goes each and every aspect of website development. This is I guess the perfect for any starter/beginner. You can even download the materials too. Then go to other tutorials and various sources on Internet. Only the cons of Pluralsight is that it is monthly subscription.
Other tutorials to learn:
http://www.w3schools.com[^]
http://www.codeproject.com[^]
www.asp.net/get-started[^]
Books(or Ebooks) are good, but they will consume lots of time. Rather start your early learning using Videos
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How can I view mobile users of my ASP.NET Web application just like Facebook chat, and detect their geolocation or their location coordinates
modified 27-Jul-14 15:28pm.
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Hi
if you are saying that you have a web application and a user open your web site on a mobile browser - and you want to track that user - then, you can follow the following:
- each request to your page from any browser will have headers associated with them which will tell you which device is the request from.
- you can use this 51degrees api to detect the mobile devices - http://51degrees.codeplex.com/[^]
- once you detect the device - you can perform your business logic
hope this helps.
Lohith
MVP (ASP.NET/IIS)
http://about.me/kashyapa
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