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Do you, or do you not, know the device name of the driver? If you know the name of the driver, put that into GetDriverInfo. That will retrieve a single instance of that driver, which will be fully populated with the DeviceName, DriverVersion and DriverDate.
If you don't, you will need to amend GetDriverInfo to return a list of SignedDriver items, and add a SignedDriver instance whenever you have populated it. You would then loop through this list after you called GetDriverInfo.
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In the grand tradition of "do this" with no details the driver is FTDIBUS I think
I have tried:
var DriverDetails = GetDriverInfo("FTDIBUS");
still prints ::
and various versions shortening the string lengthening it I'm lost...
tried looking around for other sources of how to get the correct driver and nearly all of them just check the name (which I can do!) it just that I can't get to anything useful like a date or version number.
Glenn (Confusion reigns!)
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Get the complete list, as I suggest, and then iterate over it to see which one matches the FTDIBUS. Don't try guesswork, let the computer do the work for you.
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right okay, if I run the console app pretty much as stands how can I get to the class SignedDriver as when I alter the GetDriverInfo line to be
var DriverDetails = GetDriverInfo(SignedDriver);
it gives back: type used like variable, overload method errors, cannot convert to string
This is what I never understood about C++ classes (by the way what are you doing answering silly questions at half 5 in the morning?)
Glenn
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class Program
{
static void Main(string[] args)
{
List<SignedDriver> drivers = GetDriverInfo();
foreach (SignedDriver driver in drivers)
{
Console.WriteLine("Driver name: {0} - Version : [1} - Date {2}",
driver.DeviceName, driver.DriverVersion, driver.DriverDate);
}
Console.WriteLine("Finished processing");
Console.ReadKey();
}
public class SignedDriver
{
public string DriverVersion;
public string DeviceName;
public string DriverDate;
}
public static List<SignedDriver> GetDriverInfo()
{
List<SignedDriver> drivers = new List<SignedDriver>();
SelectQuery query = new SelectQuery("Win32_PnPSignedDriver");
ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
foreach (ManagementObject manageObject in searcher.Get())
{
object driverVer = manageObject.Properties["DriverVersion"].Value;
object deviceName = manageObject.Properties["DeviceName"].Value;
object driverDate = manageObject.Properties["DriverDate"].Value;
if (deviceName != null)
{
SignedDriver driver = new SignedDriver();
driver.DeviceName = deviceName.ToString();
driver.DriverDate = driverDate.ToString();
driver.DriverVersion = driverVer.ToString();
drivers.Add(driver);
}
}
return drivers;
}
}And to answer your question, it's nearly mid day here in the UK.
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Thanks, umm there is an issue (possibly due to my PC!) as it appears to enter the List<signeddriver> GetDriverInfo(), the foreach statements if (if(deviceName != null))
meaing there must be a deviceName as it enters the loop creates an instance of the driver
gets past driver.DeviceName = deviceName.ToString(); and stops driver.DriverDate I think it's due the values of it being null other than the name Multimedia Audio Controller looking in Device Mangler it comes up in the yellow question mark of Other Devices.
If I mod it to
if ((deviceName != null)&&(driverDate !=null)&&(driverVer !=null))
it will get past and fall over at foreach in the main
foreach (SignedDriver driver in drivers)
{
Console.WriteLine("Driver name: {0} - Version : [1} - Date {2}",
driver.DeviceName, driver.DriverVersion, driver.DriverDate);
} it gives an unhandled exception highlighting it in the debugger it is complaining about the input string not being in the correct format but inspecting the values they don't really appear of spec the number of drivers is 85 (increased from 54 0 to 53) Sorry for being thick (btw I am in the UK too it's just your mail was time stamped 05:30)
Glenn
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I have to assume then that some of these values are null, so the call to ToString is the call that's failing. Try this:
driver.DeviceName = deviceName.ToString();
if (driver.DriverDate != null)
driver.DriverDate = driverDate.ToString();
if (driver.DriverVersion != null)
driver.DriverVersion = driverVer.ToString(); In the Console.WriteLine, use something like this:
Console.WriteLine("Driver name: {0} - Version : [1} - Date {2}",
driver.DeviceName, driver.DriverVersion ?? "No version", driver.DriverDate ?? "No date");
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right tried that same issue, I did check with the debugger and I can't "see" anything wrong what was old say cure one bug, cause another? I thought maybe some thing was wrong with the way I positioned the code
foreach (SignedDriver driver in drivers)
{
Console.WriteLine("Driver name: {0} - Version : [1} - Date {2}",driver.DeviceName, driver.DriverVersion ?? "No version", driver.DriverDate ?? "No date");
}
I think its trying display the driver.DriverVersion before(?) "No Version" can be copied into it.
if I put
if (driver.DriverVersion == null)
driver.DriverVersion = "No version";
if (driver.DriverDate == null)
driver.DriverDate = "No Date";
I'm starting to wonder if selling the Big Issue is an option!
[EDIT]
By commenting out the Console.WriteLine() (& removing the use of the program!)
and adding the following
a++;
Console.ReadKey();
Console.WriteLine(a.ToString());
It seems to loop up to 85 produces and then shows the message for correctly finished
Console.WriteLine("Finished processing");
from creeping around the debug screen I can tell its the 85 (85th entry that causes the problem, 0 to 84) could it be due to end of the table not being done properly?
But from creeping around the debug screen I can see the driver I want at location 20 called something different in the
System.Management.ManagementObject manageObject gives the
KernelDriver,FTDIBUS,USB Serial Converter Driver
Which I thought was the driver the name it gives is:
" USB Serial Converter" the DriverVersion gives 2.8.24.0
I'm now fully confused!
modified 5-Jul-12 10:11am.
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I have solved the issue I was having, thank you, I have learned two lessons from this
"Never Use Cut & Paste Code Directly" always look at what you are doing!,
when in stuck "have a coffee, deal with a grateful customer (they do exist at times)"
and then return to piece of code that is causing trouble. What was causing the issue
Console.WriteLine("Driver name: {0} - Version : [1} - Date {2}",
driver.DeviceName, driver.DriverVersion ?? "No version", driver.DriverDate ?? "No date"); I had stupidly copied across not really paying attention [ not {, stupid, stupid, dunces cap on! sorry Pete and thanks for the help answering my stupid questions. 
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My apologies for the bum steer. I just knocked this up in the CP message box, so I missed that. Good job though.
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No worries, how do I up vote you as you have gone overboard helping I owe you a beer! (if you are ever in Bristol) 
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There's no need to upvote me. I'm not really that bothered about rep points. Simply mark the thread as SOLVED (edit your original post and put SOLVED at the end of the title) and that will do me.
Now, the beer on the other hand...
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DataSet testvalue = getdata();
testvalue.Relations.Add(new DataRelation("parentChildCategories", testvalue.Tables[0].Columns["lob_parent_id"], testvalue.Tables[0].Columns["lob_id"], false));
TreeView1.DataSource = testvalue;
TreeView1.DataBind();
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Was that an existential query?
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace multiplication
{
class Program
{
static void Main(string[] args)
{
int[,] a = new int[2, 2] { { 1, 2 }, { 3, 4 } };
int[,] b = new int[2, 2] { { 1, 2 }, { 3, 4 } };
int[,] c = new int[2, 2];
for (int i = 0; i <= a.Length; i++)
{
for (int j = 0; j <= b.Length; j++)
{
c[i, j] = (a[i, j] * b[i, j])+(a[i,,j+1]*b[i+1,,j]);
Console.Write(c[i, j]+ " " );
}
Console.WriteLine();
}
Console.ReadLine();
}
}
}
erorr is like
Index was outside the bounds of the array.
j somasekhar
modified 4-Jul-12 8:36am.
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Please include the error-text, and the result that you were aiming for - ie, what should the code do?
Bastard Programmer from Hell 
if you can't read my code, try converting it here[^]
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At first glance, there's a syntax error here (...) (a[i,,j+1]*b[i+1,,j]) (...) - note the consecutive commas, lose one of each.
Like this:
c[i, j] = (a[i, j] * b[i, j])+(a[i,j+1]*b[i+1,j]);
2A
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For those who can't read minds, the exception you are getting is an out of bounds exception. The area that you are hitting this exception is here:
(a[i, j + 1] * b[i + 1, j]) The reason you are hitting this is because j+1 is 2 after the first iteration of j, which is outside of the bounds of the array. As I'm not sure what effect you are aiming at here, I can't really offer any concrete solution other than to say that you need to think through your logic here.
BTW - what length do you think is represented as a.Length or b.Length. It's not the 2 you're expecting; it's 4. Also, you are using <= in your conditions and it should be < only.
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Nice catch! Have a five.
After spotting the syntax error in the code sample, I directly assumed that was the problem and stopped thinking right there... 
2A
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I spotted that error and figured it was just an error putting it into the CP editor. As soon as I saw that it was arrays and looping, I knew he'd have an out of bounds error in there somewhere. The rest was just figuring out where it was.
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.
If that is meant to perform a matrix multiplication, then:
1.
it would require 3 nested loops, not 2, as each element (that is 2 loops) of the result matrix is to equal the inner product of one row and one column (that is the third loop, dealing with both the row of a and the column of b)
2.
I would not waste time on doing a specific case; instead use variable dimensions to make it general-purpose.
3.
And unless you want this as an exercise, there is a Matrix class that does it all for you, no hassle.
See e.g. here[^]
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I have a stream object coming from mobile client in binary fromat as follows
name=tony&image=....raw binary representation of an image.....
I would like to extract the image out of the stream. I can extract the image and show it fine as long as string size preceding the binary image data is 16 chars or less! ("name=tony&image=") is 16 chars long
bool PostData(Stream stream)
{
using (FileStream filetoUpload = new FileStream(filePath + "ImageFromBytes.jpg", FileMode.Create))
{
byte[] byteArray = new byte[10000];
int bytesRead = 0;
bytesRead = stream.Read(byteArray, 0, byteArray.Length);
if (bytesRead > 0)
filetoUpload.Write(byteArray, 16, bytesRead-16);
....
}
}
If I do("name=randy&image=") = 17 chars long, it doesn't work, the image shows the right size, but can't be opened.
name=randy&image=....raw binary representation of an image.....
filetoUpload.Write(byteArray, 17, bytesRead-17);
Any ideas what in the world is going on?
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