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Fixed Length Random Number[Answered] RSS

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Last post Sep 28, 2009 10:47 AM by johnly

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Kazuya_Mash
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59 Points

78 Posts

Fixed Length Random Number

Sep 26, 2009 03:15 PM|Kazuya_Mash|LINK

i Want to generate fix size 9 Digit Random Numbers....i am using this code the problem is some thime it return me 8

Length Digit Some time 9 or 7....I want exact 9 Every time

Public Function GenerateCode() As Long

Dim Code As Long

Code = GetRandomNumberInRange(12000000, 199999999)

Return CodeEnd Function

Public Function GetRandomNumberInRange(ByVal intLowerBound As Integer, ByVal intUpperBound As Integer) As Integer

Dim RandomGenerator As RandomDim intRandomNumber As Integer

RandomGenerator =intRandomNumber = RandomGenerator.Next(intLowerBound, intUpperBound)

GetRandomNumberInRange = intRandomNumber

New Random()

End Function
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Steelymar
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10925 Points

2218 Posts

Re: Fixed Length Random Number

Sep 26, 2009 03:30 PM|Steelymar|LINK

try with this range:

Code = GetRandomNumberInRange(100000000, 999999999)
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booler
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8270 Points

2195 Posts
Re: Fixed Length Random Number

Sep 26, 2009 03:43 PM|booler|LINK
The comment above contains the solution, but note you could simplify all of that down to a single line
```
Public Function GenerateCode() As Long


        Return New Random().Next(100000000, 999999999)


    End Function
```
:
My Blog
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Rajneesh Ver...
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28988 Points

7251 Posts

Re: Fixed Length Random Number

Sep 26, 2009 03:47 PM|Rajneesh Verma|LINK

Hi,

You can try like this ............
<div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">protected void Page_Load(object sender, EventArgs e)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   Random randnos = new Random();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string mpassword = RandomString(9, randnos);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   private string RandomString(int size, Random random)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   StringBuilder builder = new StringBuilder();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   char ch;</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   while (builder.Length < 9)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   int charCode = Convert.ToInt32(Math.Floor(18 * random.NextDouble() + 48));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   if ((charCode >= 48 && charCode <= 57))</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   ch = Convert.ToChar(charCode);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   builder.Append(ch);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   return builder.ToString();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div>

protected void Page_Load(object sender, EventArgs e)

   {

   Random randnos = new Random();

   string mpassword = RandomString(9, randnos);

   }

   private string RandomString(int size, Random random)

   {

   StringBuilder builder = new StringBuilder();

   char ch;

   while (builder.Length < 9)

   {

   int charCode = Convert.ToInt32(Math.Floor(18 * random.NextDouble() + 48));

   if ((charCode >= 48 && charCode <= 57))

   {

   ch = Convert.ToChar(charCode);

   builder.Append(ch);

   }

   }

   return builder.ToString();

   }

But this code is in c# you need to convert it in VB... yourself or use this tool

http://www.developerfusion.com/tools/convert/vb-to-csharp/

Thanks

Rajneesh Verma's Blog
www.rajneeshverma.com
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booler
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2195 Posts
Re: Fixed Length Random Number

Sep 26, 2009 04:28 PM|booler|LINK
Rajneesh Verma
You can try like this ............

If you want a random string, one easy way to generate it is like this:
```
Public Function GenerateRandomString() As String


        Return Guid.NewGuid().ToString().Replace("-", String.Empty).Substring(0, 9)


    End Function
```
But I think the poster is after a number in this case.
My Blog
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johnly
Member

190 Points

53 Posts
Re: Fixed Length Random Number

Sep 28, 2009 10:47 AM|johnly|LINK
Try this code. This may be what you are looking for
```
Public Function GenerateRandomString() As String
        	Randomize()
                GenerateRandomString = Format(Int(999999999 * Rnd()), "000000000")
    End Function
```
Please mark as 'Answer' if it helps
Johnlee Sam
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