Other

Maximum memory for string ? . System.MemoryOutOfException Occurs when reading the Content of the file and Storing it in a string.

balajicodeit — Tue, 20 Oct 2009 10:28:44 GMT

Hi,

I have a C++ code which reads a file [vtk file - its similar to text file only]. and try to store it in string.

here's the code:

String^ ParallelProjectionRenderer::GetVolumeDataAsString(String^ FileName)

{
vtkSmartPointer<vtkDataSetWriter> sWriter = vtkSmartPointer<vtkDataSetWriter>::New();

String^ FileName = "D:\\Users\\...";

char * sptName = static_cast<char *>(Marshal::StringToHGlobalAnsi(FileName).ToPointer());

sWriter->SetFileName(sptName);

sWriter->Register(nullptr);

sWriter->SetInput(this->dataSource);

sWriter->SetFileTypeToASCII();

sWriter->Write();

sWriter->Delete();

String^ result= File::ReadAllText(FileName); [it breaks here with system.memoryoutofexception when the file size is huge]

return result;

}

this code executes fine when the file size is less than 8mb.

I wanted to know whats the maximum memory allocated to the string.

As a workaround i skipped reading out in C++ code. and i tried to read the file contents in asp.net C# code and store it on string.

Same sort of exception came.

Basically i need this result in string bcoz, I need to communicate with the Silverlight component.

As far as i know, the WebForm to silverlight communication is done via javascript using string message.

So is there a way for this issue?

Thanx in advance,

Balajee

Different Languages in .Net

mapelixir — Sun, 30 Nov 2008 10:59:10 GMT

I have a basic question in .Net

Why there is a need for .Net Framework supporting different languages? Is it not better to train everyone in a single language?

Thanks.

Tools for memory error check in VS2005

rchiu5hk — Fri, 18 Sep 2009 09:39:10 GMT

Dear all,

I am going to write vs2005 program with ASP.NET and C++.

As you know that C++ will involve a lot of memory error handling.

Do you know is there any tools for checking memory error in Code Behind C++??

ldap_search_s - Unhandled exception at 0x77148705 Access violation reading location 0xcccccccc

ryuroden — Fri, 18 Sep 2009 08:20:27 GMT

Hi all

I have an Unhanled Exception when using ldap_search_s :

1. I used VC++ 2008 , winldap.h , Wldap32.lib

2. My code :

    PCHAR hostName = Settings::LdapHost;
    LDAP* pLdapConnection = NULL;
    ULONG version = LDAP_VERSION3;
    ULONG numReturns = 10;
    ULONG lRtn = 0;


    pLdapConnection = ldap_init (hostName, Settings::LdapPort);

    if (pLdapConnection == NULL)
    {
        ldap_unbind(pLdapConnection);
        return -1;
    }

    lRtn = ldap_set_option (
                    pLdapConnection,           // Session handle
                    LDAP_OPT_PROTOCOL_VERSION, // Option
                    (void*) &version);         // Option value

    if(lRtn != LDAP_SUCCESS)
    {
        ldap_unbind(pLdapConnection);
        return -1;
    }


    lRtn = ldap_connect (pLdapConnection, NULL);

    if(lRtn != LDAP_SUCCESS)
    {
        ldap_unbind(pLdapConnection);
        return -1;
    }


    lRtn = ldap_simple_bind_s (pLdapConnection, pUserName, pPassword);

    if(lRtn != LDAP_SUCCESS)
    {
        printf("ldap_bind_s failed with 0x%lx.\n",lRtn);
        ldap_unbind(pLdapConnection);
        return -1;
    }

    ULONG errorCode = LDAP_SUCCESS;
    LDAPMessage* pSearchResult = 0;
    PCHAR pMyFilter = "(&(objectClass=*))";
    PCHAR pMyAttributes[2];
    pMyAttributes[0] = "cn";
    pMyAttributes[1] = "uid";

    errorCode = ldap_search_s (
                    pLdapConnection,                        // Session handle
                    "ou=manager,dc=com,dc=vn",              // DN to start search    pMyDN
                    LDAP_SCOPE_SUBTREE,                        // Scope
                    pMyFilter,                                // Filter
                    pMyAttributes,                            // Retrieve list of attributes
                    0,                                        // Get both attributes and values
                    &pSearchResult);                        // [out] Search results

I got the Exception "Unhandled exception at 0x77148705 in LdapTest.exe: 0xC0000005: Access violation reading location 0xcccccccc " at line errorCode = ldap_search_s . Even I passed correct userName & Password, and I ran this test succesfully in C# with DirectoryEntry & DirectorySearcher

Anyone who have experience, please help me. Many thanks!

create columns header in gridview in c++

rchiu5hk — Fri, 18 Sep 2009 02:38:02 GMT

Dear all,

I am writing the VS2005 with ASP.NET and C++.

Could you tell me how to write the code in DataSet or DataView from a list of raw data?

e.g. I have data[][]. How can it assign to dataset or dataview data by data??

I think I need to create column header with datatype, fieldname...etc. What the code should be in C++??

Please help!!

C++ Sample Program (JAVA PETSTORE)

rchiu5hk — Thu, 17 Sep 2009 02:58:32 GMT

Dear all,

I am going to write large web application in VS2005 with C++ and ASP.NET.

I hope that I can get the sample so that I can learn while looking at the code.

I hope that I can learn some coding design and some manipulating web controls code in C++.

It can be like Java Petstore web application or others.

Do you know where I can find it??

C++ bind to gridview

rchiu5hk — Wed, 16 Sep 2009 06:05:17 GMT

Dear all,

I have the object class data which will be read iteratively.

I don't know how to program in C++ to create the data source for binding to gridview.

It should be dataset or list structure? If dataset, What the syntax should be to create columns header about datatype, name....etc?

Is there anything I am missing to create the data source for binding to gridview in dataset or list from raw data.

J# Applet?

kromozom — Sat, 28 Feb 2004 07:19:09 GMT

Hi,

I would like to know that can we create Applets as we do in pure Java in J# with VS.NET?

Kind Regards,

when using flex/xslt in UI (presentation layer)

vivek4net — Thu, 07 May 2009 18:17:21 GMT

What would be the architecture when using flex/xslt on presentation layer, how will this communicate with other layers.

other layer (.net layers, like business layer, data access layer).

How to send data/object using flex to other layers.

can anyone suggest some good architecure. thanks.

C++ for server side programming

phddas — Sat, 18 Jul 2009 03:28:03 GMT

I am learning about the ASP.NET technology, I still remember a lot from my previous work with C++. I have VS2008 installed. do I abandend C++ and get on C# or C++ will serve me just as good. if so, how do I install C++ to be able to use it with VS2008?

Thanks

Conversion of List to DataTable and ViceVersa

konkalabhaskar — Mon, 08 Jun 2009 11:38:23 GMT

hi ,

Iam having a requirement where I wil get datatable or Dataview from the DataAccessLayer I need to convert them into GanaricList of entites and ViceVersa from GenericList to Datatable or DataView.

I tried it but I cant. Can anybody help me out.

nunit project and testcase

Ganesh@Nilgris — Tue, 24 Feb 2009 06:26:17 GMT

This is my scenerio,

I have a dll which has lot of methods. I am creating testcase using nunit. i created nunit prpject as per some sample helpful links in net. Now here is the few basic questiosns which i require answers

1. Consider my "dll" which contains methods to insert into the db

2. in nunit project i need to specify the connectionstring. where will i specify it ?

3. adding nunit.framework dll alone will solve the problem or do i require any other files also. it is not clear.

4. wht will be the output of nunit project. Is it the assembly.exe or something else

5. i am not able to find a file assembly.config in the bin folder.

Any ideas on how to slove the problem would be more helpfull.

Why to use (or not to use) MonoRail

ssnaik84 — Tue, 31 Mar 2009 10:48:32 GMT

Hi All,

Since past few days, I'm exploring MVCs for ASP.NET. MonoRail looks promising.

I've googled a lot for pros and cons of MonoRail..

http://geekswithblogs.net/dsellers/archive/2006/10/25/95041.aspx

http://andrewpeters.net/2007/03/20/aspnet-vs-monorail/

But, these posts seem to be older. MonoRail must be evolved today for sure.

I would like to hear from you guys about Pros and Cons of MonoRail in today's stage.

Thanks in advance.

How to pass values to event

raja.selvaraju — Wed, 25 Mar 2009 15:38:05 GMT

hi,

How to pass values to events using NUnit.

Thanks,

Raja S

how to pass in system string pointer and keep its value after function ended? C++

MuffinMan123 — Wed, 25 Mar 2009 00:32:08 GMT

I am using System String in C++ program, and I am not sure how I can pass in a system string pointer to a function to obtain the value for it and still keep the string value after the function terminated.

if it's stl string it does not get collected after function dies, but system string is the only one I can use here, and I don't know how to deal with this problem

p.s. I am using old clr syntax, so it's not an error.

bool CheckMachineID(System::String *machineid)
{
bool success = false;

//code skipped

///

     SqlDataReader *reader0 = cmd0->ExecuteReader();
   //reader0->get_Item ("MachineID")->ToString()

   while (reader0->Read())
    {
       machineid = String::Copy(reader0->get_Item ("MachineID")->ToString());
       //how to stretch life time of a system string beyond this function?

       Console::WriteLine( machineid );
       success = true;
    }
   reader0->Close();
   return success;
}

How to read tables in mdf files using VC++ express 2008?

MuffinMan123 — Mon, 16 Mar 2009 10:02:55 GMT

Hi,

I have build a MS sql database file from visual web developer, and now I need to access the file using VC++ express 2008.

Basically I need to be able to execute commands like this

SELECT [HomeAddress], [Number], [Material] FROM [ThisTable] WHERE ([RegisterKey] = @RegisterKey)

and maybe store these data in a list of some sort.

for the moment I only need to read from the mdf file not writing to it, so select should do the job.

I heard VC++ express used to offer project template called sql server project, but this is not in the 2008 version, I also heard about ADO.net on VC++, but I could only find msdn articles on it.

if possible please give me tutorials and links beside msdn.com because I always find the site confusing to negivate. thanks.

Compile C Programs as .NET

RobertLair — Sun, 08 Mar 2009 00:56:05 GMT

Is it possible to take a C program and compile it with VS.NET and then use it just as you would another .NET compiled application, such as C#?

.pas to .vb

Nicasius — Mon, 02 Mar 2009 09:00:15 GMT

-edit-

Error when using WSDL tool

daniel_baylon — Thu, 15 Jul 2004 19:44:13 GMT

I'm using a C# console application which make a calls to a Web Service.

I'm using WSDL tool to generate Client Code.

When WSDL runs, following error occurs:

WSDL: error WSDL1: There was an error processing 'http://999.99.99.999:8080/webApp/WSDemo?WSDL'.
There was an error downloading 'http://xxx.xx.xx.xxx:8080/webApp/WSDemo?WSDL'.
The request failed with HTTP status 407: Proxy Authentication Required.

If you would like more help, please type "wsdl /?".

I don't know why this error occurs, Web Service server and client host are located on same Local Area Network. No proxies are required between Server and client host.

I appreciate some help.

Best Regards

Will there be an IronPerl?

TATWORTH — Thu, 29 Jan 2009 15:21:50 GMT

Given all the work now being done Python and Ruby for Framework 4.0, will there be an IronPerl version of Perl?

Regarding Attributes

sivagates05 — Tue, 20 Jan 2009 12:02:57 GMT

hi all,

Please post sites(link) where i can get samples for Attributes which we will be using in Asp.net with c#.

I was not able to find sites with samples, different types, usage of Attributes.

Thanks in advance.

Help with C on a text entry, Please help!

coddy41 — Wed, 14 Jan 2009 17:04:04 GMT

I am trying to make a black screen that lets me enter a line of text, and like when a put choice "a" it loads a wmt.txt in plain

C I have want through hours on google and cant figure it out please help!

what is F# is it better than C# or vb.net?

amin_2501 — Sat, 10 Jan 2009 12:06:23 GMT

what is F# is it better than C# or vb.net?

F#

CHSH — Thu, 01 Jan 2009 16:23:55 GMT

Does anyone know where I can get a BNF F# ?

Fatal Error?

Woody11 — Mon, 17 Mar 2008 20:23:32 GMT

I am getting this :Error 7 fatal error C1075: end of file found before the left brace '{' at '.\assign3b.c(4)' was matched, when i try and build my program. Here is my program:

#include<stdio.h>

#define standarddeduction 3000

int main(void)

{

int S=0 ,J=0, M=0;

float grossincome;

int taxpayerid=0;

int filingstatus=0;

int numberofexemptions=0;

int i =0;

double taxableincome;

double taxrate=0;

while(scanf("%d",taxpayerid)) {

prinf("Please input taxpayer id");

scanf("%d",&taxpayerid);

prinf("Input filing status");

scanf("%d%d%d", &J,&S,&M);

prinf("Input gross income");

scanf("%f", &grossincome);

taxableincome==grossincome-standarddeduction-1000*numberofexemptions;

printf("Input number of exemptions");scanf("%d", &numberofexemptions);

if (taxpayerid= 'S'); {

if (taxableincome<=5000)

taxrate= .15;

else if (taxableincome>=5000&&taxableincome<=20000)

taxrate=.22;

else if (taxableincome>20000)

taxrate=.31;

}

if (filingstatus= 'M') {

if (taxableincome<=10000)

taxrate=.15;

else if (taxableincome>=100000&&taxableincome<=40000)

taxrate=.22;

else if (taxableincome>40000)

taxrate=.31;

}

if (filingstatus= 'J') {if (taxableincome<=7000)

taxrate= .17;

else if (taxableincome>=7000&&taxableincome<=25000)

taxrate=.24;

else if (taxableincome>25000)

taxrate= .33;

}

printf("taxableincome %lf/n",taxableincome);printf("taxrate %lf/n",taxrate);

i++;

return 0;

}

thanks for any help.