.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

64 bit Strong Random function

Posted By:      Posted Date: September 20, 2010    Points: 0   Category :WPF
i want to generate 64 Bit random number (Range between 2^50 and 2^64) in C#

View Complete Post

More Related Resource Links

Equivalent C# function for this random access read for this VB6 function?

I'm having a problem reading a block of bytes into an array from a file read (random access).  Instead, in C#, it seems I can only read byte by byte and not a block of byte.  I want to create a string array that is 500 cells in capacity but each cell is 10 bytes wide.  how do i do this?I have  written the function in Vb6 and maybe someone can tell me the fs.Read (code) for the C# equivalent.In Vb6, I declaredPrvate Type WFM  points(500) as String * 10   // This will create an string array of 500 cells but the KEY here is each cell is 10 bytes wide fixed!End type

Generate Random Numbers

SQL Server has a built-in function that generates a random number, the RAND() mathematical function. The RAND math function returns a random float value from 0 through 1.

Content page control passes as argument to javascript function


Here is the content page:


<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="JavaDynamicCopyValue.aspx.cs" Inherits="JavaDynamicCopyValue" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
 <script type="text/javascript" >
 function copyValue(input, output )
   ouput.value = input.value;
   return true;
 <asp:TextBox ID="txt1" runat="server" onchange="copyValue(this,document.getElementById('<%=txt2.ClientID%>'))"></asp:TextBox>
    <br />
    <br />
    <asp:TextBox ID="txt2" runat="server"></asp:TextBox>


I got a javascript run time error says output is undefined. if I view source of the page, the txt1 markup became:

<input name="ctl00$ContentPlaceHol

connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly.


I dont have the SQL EXPRESS installed instead I have SQL Standard Edition.

 I have two SQL Server instances installed.

 1- UserLT (this is sql 2000)
2- UserLT\SQL2005 (this is SQL 2005 named instance)

But when i try to add a database to my VS website project I get the following error:

Connection to SQL Server files (*.mdf) require SQL server express 2005 to function properly. please verify the installation of the component or download from the URL: go.microsoft.com/fwlink/?linkId=4925

I went in Tools>Opetions>DataBase tools>Data Connection>Sql Server Instance Name (blank for default)

and changed the "SQLEXPRESS" to "USERLT\SQL2005".

But I still get the same error message. Any ideas how i can resolve this issue?

Public Shared function doubt????

I am using VB.net/ASP.NET and SQL Server 2000 for a web application.

For populating the dropdowns, I wrote a Public Shared function LoadDDL(), in which I pass the dataset and dropdown name to set.

I have my doubts that this function will produce unexpected results for concurrent users. And will mix the results among sessions because it is a Shared function.

I am confused here. Is it the right way to go?

Please advice. Thanks in advance.


Trim function in C Sharp

How do i use "trim" function in C Sharp? I have a string and i want to strip off spaces from the end of the string. Any idea how do i do it??


CLR Inside Out: Using Strong Name Signatures


Strong name signatures (and signing in general) are a key facet of Microsoft® . NET Framework security. But regardless of how well designed . NET signatures may be, they won't offer the maximum benefit if you don't know how to use them properly.

Mike Downen

MSDN Magazine July 2006

Pure C++: Invoking Generic or Function Templates


As I promised last time, in this month's column I'll walk through the process of defining and invoking a generic or template function under C++\CLI. A function template or a generic function begins with the template or generic keyword followed by its parameter list.

Stanley B. Lippman

MSDN Magazine October 2005

Editor's Note: 20 Years and Still Going Strong!


Microsoft Systems Journal (MSJ) was founded in 1986. At the time, no other publication focused specifically on the needs of programmers who were using Microsoft tools and technologies. Two issues were produced in the first year, each with five articles.

Joshua Trupin

MSDN Magazine April 2005

Cryptography: Employ Strong Encryption in Your Apps with Our CryptoUtility Component


When storing sensitive data, you need to be able to identify threats, determine how these threats interact with each other, and how issues can combine to constitute a vulnerability that will leave your data exposed. With a good understanding of the various cryptographic algorithms, salt, hashes, ACLs, and other available techniques, you'll be in a better position to protect your critical data.

Michael Stuart and J Sawyer

MSDN Magazine November 2004

Cutting Edge: Using an Eval Function in Web Services


Web Services are often presented as the perfect tool for pro-grammers. They're interoperable, based on open standards such as SOAP and WSDL, and are fully integrated with the Microsoft® . NET platform.

Dino Esposito

MSDN Magazine September 2002

way of calling "javascript function of parent window from child window."

The article way of calling "javascript function of parent window from child window." was added by raja.s on Sunday, June 06, 2010.

Hi,Here i am going to explain how to call the javascript function of a parent window from the child window(pop-Up).Some may know before reading this post.Parent Java Script Function:script language="Javascript" type="text/javascript">

Need function to find difference between two dates


Hi all

I need a function written in vb to find the exact month difference between two dates.

For example

    Start Date : 01/01/2010

    End Date   : 15/02/2010

 then the difference value should be like this 1.5  i.e i need the difference in decimal value.

>>>How to use javascript function in aspx file?



I have a file util.js and there some funtions in same file.

For example functions name are keyUp, keyDown, isNumeric, isAlphaNumeric

I have used these functions in aspx code behind in a textbox to restrict user that he may not be able to input any special character.

Before, I used the code directly in aspx file but I have do it for different textboxes therefore to avoid much coding in aspx file I created util.js and put all code in this file but how to use these particular functions in aspx file I couldn't find the way.

Anyone have idea. Do share with me.

I used the reference like this:


' Font-Names="Verdana" Font-Size="8pt" Onkeyup= "keyUp(event.keyCode)" Onkeydown="return isAlphaNumeric(event.keyCode);" onpaste="return false;">

ERROR [S1000] [Microsoft][ODBC Visual FoxPro Driver]Function name is missing ).


I Am Continiously Getting Error For Following Line Of Code, It Work  Fine In Other Database

Am I Doing Any Mistake

if (sh3itno != "" && dpsh3no != "")
                string queryy = "SELECT [CHEQNO] FROM [SH3MAST] WHERE (([CHEQDATE] = " + chqdate + ") AND ([FAVOUR] = " + favour + ") AND ([CHQTYPE] = " + ctype + ") AND ([TRSTN] = " + trstn + ") AND ([TRBANK] = " + trbank + ") AND ([SH3ITNO] = " + sh3itno + ") AND ([DPSH3NO] = " + dpsh3no + "))";
                OdbcCommand cmd3 = new OdbcCommand(queryy, connen1);
                string chqno =cmd3.ExecuteScalar().ToString(); (Here Iam Getting Error)
                tbl.Rows[i]["cheque no"] = chqno;
Stack Trace: 

[OdbcException (0x80131937): ERROR [S1000] [Microsoft][ODBC Visual FoxPro Driver]Function name is missing ).]
   System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode) +39
   System.Data.Odbc.OdbcCommand.ExecuteReaderObject(CommandBehavior behavior, Strin
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend