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I need a suggestion from you:
I want to make a saving program that is for windows only (not for internet) and who can imitate the Forum(in general) type of writing a text , store and display. Like the one i am writing right now. With a list box to display some saved text from a file, a textbox under -to write and save into that file.And a comboBox that can sort all "posts". Basically this is the hard part, the rest are decorations.
How do you recommend me to do:
Make for every "post" a file (for 100 posts will be 100 files) and the sorting is based on those files-its more intuitive to program it this way for me in my stage.
OR - the very hard part: (because i know only the basics in string manipulation)...
Make a single file with all the text and sorted it out by manipulating a string who contain the entire file.(a string that can retain in itself 99999999999999 characters-its even possible?-i doubt it.
OR
Again a single file that can be sorted but with the help of another one that contain some [sortings by address] from that large one. Basically there will be 2 files one with keywords representing addresses and the text attached to them, and the second one with only the keywords address.
But This is a little overwhelming for me to think about and i seek help from you, the guru of programming world.
Please give me a good solution...and how to think it through(programmatically).
Thank you.
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Hi,Frinds.
I have a code that install sql server 2005 through code with command line argument written in bat file.
It was working fine on my machine with out any problem.
But on other machine its not. its terminating with out giving any kind of error . the machine i am tring allready have .net framework, win installer 3.1 and crystal report framework. Can u please tell me the problem. Thank you
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I'm using BO XI R2.
I want to modify the report.
Following is a code snippet which throws InvalidCastException;
and under that the Message is No Such Interfaces Supported.
Kindly suggest me a solution, if you have been able to crack it.
Also any ideas why such an exception.
using CrystalDecisions.CrystalReports.TemplateEngine;
using CrystalDecisions.ReportAppServer.ClientDoc;
using CrystalDecisions.ReportAppServer.ObjectFactory;
using CrystalDecisions.ReportAppServer.DataDefModel;
using CrystalDecisions.ReportAppServer.Controllers;
using CrystalDecisions.ReportAppServer.CommonObjectModel;
using CrystalDecisions.ReportAppServer.ReportDefModel;
ReportClientDocument reportClientDocument = new ReportClientDocument();
SessionMgr sessionMgr = new SessionMgr();
EnterpriseSession enterpriseSession;
EnterpriseService enterpriseService;
InfoStore infoStore;
InfoObjects infoObjects;
InfoObject infoObject;
ReportAppFactory reportAppFactory;
string sampleReportName;
enterpriseSession = sessionMgr.Logon("administrator","","localhost","secEnterprise");
enterpriseService = enterpriseSession.GetService("InfoStore");
infoStore = new InfoStore(enterpriseService);
sampleReportName = "World Sales Report";
infoObjects = infoStore.Query("Select SI_ID From CI_INFOOBJECTS Where SI_NAME='" + sampleReportName + "' And SI_INSTANCE=0");
infoObject = infoObjects[1];
reportAppFactory = (ReportAppFactory)enterpriseSession.GetService("","RASReportFactory").Interface;
reportClientDocument = reportAppFactory.OpenDocument(infoObject.ID,0);
reportClientDocument = reportAppFactory.OpenDocument(infoObject.ID,0); code segment throws the Exception
modified on Tuesday, September 7, 2010 2:30 AM
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Please clarify exactly which statement throws the exception and the full text of all messages produced by the exception. My guess is that the interface you are calling does not return the object type that you think it does.
It's time for a new signature.
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reportClientDocument = reportAppFactory.OpenDocument(infoObject.ID,0);
throws System.InvalidCastException
Message is No such interfaces Supported
following is the stack trace
at CrystalDecisions.ReportAppServer.ClientDoc.ISReportAppFactory.OpenDocument(Object DocID, Int32 Options)
at BNPP.Reports.Common.GenerateBOReport.GenerateReport(String _reportName, String _fileName, String _repositoryName, String _fileExtention, Boolean& bolChechEmpty, Decimal minFileSize) in \GenerateBOReport.cs:line 146
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From the information you provide I cannot see why it would throw this error. I suggest you try the documentation or contacting the provider of the library code for assistance.
It's time for a new signature.
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infoObject = infoObjects[1];
Array indices in C# are 0-based. Shouldn't it be
infoObject = infoObjects[0];
instead ?
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in here we are dealing with SAP Business Objects(BO).
Here the indices start from 1.
so an index of 0 gives index out of range exception.
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Any reason you're asking this question in a C# forum then?
Rhys
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it"
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance."
Terry Pratchett
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I didn't get the appropriate forum in which i could ask this question.
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You should probably try somewhere like BOB[^] or an appropriate Tek-Tips[^] board.
Please respect the Forum subject, thanks.
Rhys
"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it"
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance."
Terry Pratchett
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I never used SAP Business Objects, so I won't be able to help any longer.
What I would do, if I were you, is to find whereas :
- the problem is on the reportAppFactory variable (which wouldn't be of type needed)
- or the problem is on the first parameter of the OpenDocument method (maybe try with infoObject instead of infoObject.ID, as it seems this method expects an object as its first parameter)
But these are only educated guesses and could be completely wrong as I'm not a SAP BO specialist.
Good luck.
modified on Tuesday, September 7, 2010 10:16 AM
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The documentation of that OpenDocument function seems to be very low quality. According to the stack trace ("OpenDocument(Object DocID, Int32 Options)"), the first parameter is an Object, but obviously the function requires an object implementing a specific interface...
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Hi
I am writing a C# app that talks TCP/IP to a development board. The board has C command struct packets defined below.
#define MAX_PACKET_PAYLOAD 1024
typedef enum packetCmds_enum {
PC_TO_DSP_WRITE = 1,
PC_TO_DSP_READ = 2,
DSP_TO_PC_ACK = 3
}packetCmds_enum;
//@brief This packet is sent from the DSP to the PC as a command.
typedef struct cmdPacket_type {
packetCmds_enum cmd; //< Should be 32 bits
Uint32 size; //< Set to zero if no data
Uint32 addr; //< Target address
Uint8 data[MAX_PACKET_PAYLOAD];
Uint32 checksum; //< Includes cmd, size, addr and data.
} cmdPacket_type;
I started programming it as public struct but then ran into an issue with the Uint8 data array. If I use
byte[] data = new byte[MAX_PACKET_PAYLOAD]
then I won't get the same structure because its an object.
I'm also using the System.NET.socket library to get the packet from the board.
socket.Receive(bytesReceived)
I've learned that I can't typecast bytesReceived to cmdPacket_type, so whats the cleanest way for me to parse the packet?
I also have to send packets to the dev board, but once I understand the conversion between un-managed and managed code (if thats even possible), I should be able to figure it out.
Thanks
Cheers
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Hi,
here is a partial answer for you:
1.
in order to call native (or unmanaged) code from C#, you need P/Invoke. It isn't very simple, however there is a lot of information available, use Google. I have an unfinished article here[^]. Unfortunately for you, structs will be handled in part 2, which isn't available yet.
2.
to mimic native numeric arrays (with a constant size) in a C# struct, you need MarshalAttribute; it may look like:
struct ... {
...
[MarshalAs(UnmanagedType.ByValArray, SizeConst=1024)]
byte[] byteArray;
...
}
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From the information you've supplied, this looks like it should work:
using System.Runtime.InteropServices;
public enum PacketCmds
{
PC_TO_DSP_WRITE = 1,
PC_TO_DSP_READ = 2,
DSP_TO_PC_ACK = 3
}
[StructLayout(LayoutKind.Sequential)]
public struct CmdPacketType
{
public const int MAX_PACKET_PAYLOAD = 1024;
public PacketCmds cmd;
public uint size;
public uint addr;
[MarshalAs(UnmanagedType.ByValArray, ArraySubType=UnmanagedType.U1, SizeConst=MAX_PACKET_PAYLOAD)]
public byte[] data;
public uint checksum;
}
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Instead of PInvoke, I recommend to use a C++/CLI wrapper. Easy to implement and it has less "magic" involved.
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hi guys
i can send file with bluetooth from pc to any phone with inthehand library that phone must be accept recive file
and now how to send file without accepting from phone ?
thanks a lot
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Why do you want to do that? I wouldn't like my phone receiving a file without me knowing about and accepting it. Sounds fishy.
"I love deadlines. I like the whooshing sound they make as they fly by." (DNA)
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thanks for reply
i want to send file from pc to phone with bluetooth without accepting from phone and when send directly send to phone
thanks a lot
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I don't think you can, and even if it is possible, you shouldn't.
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For what I understand, you cannot get around that limitation for, rather obvious, security reasons.
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if you want to send to your own phone, create a solid connection maybe it can do, but i dont want to recieve your files without my "YES".
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i would like to write control like IE-8 address bar - with the option of auto-complete text and with the option of the delete (like the X that appear on the right of each option when doing hover)
how can i add the delete option?
any idea?
Thanks
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You'll need to subclass a ComboBox, set the autocomplete stuff and set the DrawMode to one of the OwnerDraw ones so you can draw the image and override OnDrawItem.
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