Re: Programmatically select multiple cells in DataGridView C# / VB.NET application - C# Discussion Boards

vibindia13-Nov-09 1:45

13-Nov-09 1:45

This coding is in C++\CLI:

System::Drawing::Bitmap ^pBitmap;
System::IntPtr intPtr = pBitmap->GetHbitmap();
//How to convert this IntPtr to HBITMAP
//HBITMAP hbitMap = intPtr

VIBIN

"Fool's run away,where angle's fear to tread"

Re: How to get HBITMAP form BitMap

dan!sh 13-Nov-09 2:37

dan!sh

13-Nov-09 2:37

vibindia wrote:
This coding is in C++\CLI

So why are you asking in C# forum when there is a C++ forum here?

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!

how to generate licence key for my product which is developed with c#

happies13-Nov-09 1:27

happies

13-Nov-09 1:27

Hi All,
I have developed a c# product,when i want to sale my product in cd's,how can i give licence key for my product.i dont have any basic idea about this process.please guide me for this,im really new to this windows app's.pls help me.

Thanks& Regards
Happy

Happy

Re: how to generate licence key for my product which is developed with c#

Shameel13-Nov-09 4:15

Shameel

13-Nov-09 4:15

You are new to Windows apps and you already have a product, really great.

Re: how to generate licence key for my product which is developed with c#

Eddy Vluggen13-Nov-09 4:55

Eddy Vluggen

13-Nov-09 4:55

Buy an application that protects yours. Such software can be found here[^], for example.

You could also pick up a book on programming, learn for a few weeks and try to build one yourself. The basic idea is to generate a number that's unique for the combination of a product/computer/user. If the registered key is different from your computed value, you're either dealing with an unregistered key, or a bug Smile | :)

I are Troll Suspicious | :suss:

Programmatically select multiple cells in DataGridView C# / VB.NET application

willempipi12-Nov-09 23:40

willempipi

12-Nov-09 23:40

Hi,

I'm creating a user control that displays a DataGridView control. I want to be able to programmatically select multiple cells/rows. So i made this function:

public bool SetSelectedValues(string ColumnName, List<object> CellValues)
{
    bool FoundRows = false;

    for (int ColumnIndex = 0; ColumnIndex < gridData.Columns.Count; ColumnIndex++)
    {
        if (gridData.Columns[0].Name == ColumnName)
        {
            gridData.ClearSelection();

            for (int RowIndex = 0; RowIndex < gridData.Rows.Count; RowIndex++)
            {
                foreach (object CellValue in CellValues)
                {
                    if (gridData.Rows[RowIndex].Cells[ColumnIndex].Value.ToString() == CellValue.ToString())
                    {
                        gridData.Rows[RowIndex].Cells[ColumnIndex].Selected = true;
                        gridData.CurrentCell = gridData.Rows[RowIndex].Cells[ColumnIndex];

                        FoundRows = true;
                    }
                }
            }

            break;
        }
    }

    return FoundRows;
}

It doesn't work, only the last cell gets selected, because i cannot select multiple cells in the CurrentCell. How can i solve this?

Regards,

Willem

Re: Programmatically select multiple cells in DataGridView C# / VB.NET application

dan!sh 13-Nov-09 3:35

dan!sh

13-Nov-09 3:35

I don't the code here setting MultiSelect as true. See if you have done that. Plus, not sure about CurrentCell thing. Why are you setting it in first place?

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!

Re: Programmatically select multiple cells in DataGridView C# / VB.NET application

willempipi13-Nov-09 3:39

willempipi

13-Nov-09 3:39

Found the solution myself, the setting of selected cell's is only effective after the datasource is bound to the control. This is not done jet when you are in the Form_Load, so you have to wait for it. This is my solution:

private string Selection_ColumnName = null;
private List<object> Selection_CellValues = null;

public void SetSelectedValues(string ColumnName, List<object> CellValues)
{
    Selection_ColumnName = ColumnName;
    Selection_CellValues = CellValues;
    gridData.DataBindingComplete += new DataGridViewBindingCompleteEventHandler(gridData_DataBindingComplete);
}
private void gridData_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
    bool CellFound = false;

    for (int ColumnIndex = 0; ColumnIndex < gridData.Columns.Count; ColumnIndex++)
    {
        if (gridData.Columns[0].Name == Selection_ColumnName)
        {
            gridData.ClearSelection();

            for (int RowIndex = 0; RowIndex < gridData.Rows.Count; RowIndex++)
            {
                foreach (object CellValue in Selection_CellValues)
                {
                    try
                    {
                        if (gridData.Rows[RowIndex].Cells[ColumnIndex].Value.ToString() == CellValue.ToString())
                        {
                            gridData.Rows[RowIndex].Cells[ColumnIndex].Selected = true;
                            if (!CellFound) gridData.CurrentCell = gridData.SelectedCells[0];

                            CellFound = true;
                        }
                    }
                    catch
                    {
                    }
                }
            }

            break;
        }
    }

    gridData.DataBindingComplete -= new DataGridViewBindingCompleteEventHandler(gridData_DataBindingComplete);
}

SslStream.Authenticate method

nirmalsat12-Nov-09 22:55

nirmalsat

12-Nov-09 22:55

Hi,

I am trying to retrieve mails from a server like gmail. I have used TcpClient class to connect to the server.Connection is established successfully.During authentication using SslStream.AuthenticateAsClient() method to authenticate..I receive an exception saying..(HandShake Failed due to unexpected packet format)..
Can anyone help me with this..

Thank you.

Re: SslStream.Authenticate method

Paulo Zemek12-Nov-09 23:57

Paulo Zemek

12-Nov-09 23:57

Probably the connection on the server side is not SSL.
Or, you must first send some data (to identify you want to use SSL) to then call SslStream.Authenticate.

How can I know/see on which core a thread run ? (In win XP)

evyatar.v12-Nov-09 22:44

evyatar.v

12-Nov-09 22:44

Hi again..

This is continuance from 2 Nov '09

Is there any another solution for win XP ?

I try this:

<br />
[DllImport("ntdll"), SuppressUnmanagedCodeSecurity]<br />
public static extern int NtGetCurrentProcessorNumber();<br />

and I get this exception:

System.EntryPointNotFoundException was unhandled
Message="Unable to find an entry point named 'NtGetCurrentProcessorNumber' in DLL 'ntdll'."
Source="XP_Multicore_try_0"
TypeName=""
StackTrace:
at XP_Multicore_try_0.Program.NtGetCurrentProcessorNumber()
at XP_Multicore_try_0.Program.loop() in C:\Documents and Settings\evyatarv\Desktop\XP_Multicore_try_0\XP_Multicore_try_0\Program.cs:line 24
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

Re: How can I know/see on which core a thread run ? (In win XP)

Covean12-Nov-09 23:06

Covean

12-Nov-09 23:06

ntdll.dll is a native code dll. You will not be able to access this dll from user code.
You have to write a native code service or driver to access it.

Greetings
Covean

Re: How can I know/see on which core a thread run ? (In win XP)

Luc Pattyn13-Nov-09 0:47

Luc Pattyn

13-Nov-09 0:47

Covean wrote:
ntdll.dll is a native code dll. You will not be able to access this dll from user code

All of the Windows core is native code, and its API functions can be accessed perfectly using P/Invoke.

Hmmm | :|

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: How can I know/see on which core a thread run ? (In win XP)

Covean13-Nov-09 1:43

Covean

13-Nov-09 1:43

Once again you are right. I can invoke it. Just ignore my post.

Greetings
Covean

Re: How can I know/see on which core a thread run ? (In win XP)

evyatar.v13-Nov-09 5:38

evyatar.v

13-Nov-09 5:38

so..

Did I do something wrong ?

Why I get this exception ?

Thanks..
Evyatar

Re: How can I know/see on which core a thread run ? (In win XP)

evyatar.v13-Nov-09 0:58

evyatar.v

13-Nov-09 0:58

Can you please give me an example, I think I don't realy understand what
I'm needed to do to make it work.

Thanks..
Evyatar

Re: How can I know/see on which core a thread run ? (In win XP)

Eddy Vluggen13-Nov-09 1:22

Eddy Vluggen

13-Nov-09 1:22

That message is thrown when the method can't be found in the library. You might want to try to use the GetCurrentProcessorNumber method instead.

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern int GetCurrentProcessorNumber();

Hope this helps Smile | :)

I are Troll Suspicious | :suss:

Re: How can I know/see on which core a thread run ? (In win XP)

Shameel13-Nov-09 4:23

Shameel

13-Nov-09 4:23

Windows XP does not support this.

Re: How can I know/see on which core a thread run ? (In win XP)

Eddy Vluggen13-Nov-09 4:42

Eddy Vluggen

13-Nov-09 4:42

Dang, you're right - Vista and up. A quick Google found an alternative for XP;
https://www.cs.tcd.ie/Jeremy.Jones/GetCurrentProcessorNumberXP.htm[^] Smile | :)

I are Troll Suspicious | :suss:

Windows service using custom DLL

TurboTaMan12-Nov-09 20:39

TurboTaMan

12-Nov-09 20:39

Building a windows service which needs to call a custom DLL. When I try to start the service it gives me an error stating it can't find the DLL. Which makes since since I was unable to register the DLL using Regsvr32. If I take out the DLL the service works fine (minus functionality of custom DLL). If I create a project with the same functionality as the service everything works fine once I add a reference to the DLL. Is there anything I can do to get the windows service to work with this custom DLL?

Only thing I have found is to add the DLL to the System32 direcotry which I have done.

Re: Windows service using custom DLL

Shameel12-Nov-09 22:17

Shameel

12-Nov-09 22:17

What is the exact error message you are getting ?

Re: Windows service using custom DLL

Covean12-Nov-09 23:14

Covean

12-Nov-09 23:14

Ever tried to get the current directory of your service? I think this will not be the directory
you are awaiting, normally its C:\Windows\system32 for services.
So if your dll is not in the C:\Windows\system32 directory you have to find out
where your service install path is.

For example:
Registry.GetValue("HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\[yourservice_name]", "ImagePath", null);

Greetings
Covean

Re: Windows service using custom DLL

TurboTaMan16-Nov-09 8:06

TurboTaMan

16-Nov-09 8:06

Thanks Covean. As usual I amde it much more difficult than it needed to be. All I had to do was put the dll in the same directory as the file used to create the service. Thanks, you pointed me in the right direction.

Folder Access permission

anishkannan12-Nov-09 20:39

anishkannan

12-Nov-09 20:39

Give Some Idea to get this Approach

I want to create folder access permission for entire of system ... Once if the folder has assigned to the login permission in our application , that is give a password of access that folder .... Dont access with out permission in authentication person

How can i do this scenario through C#

Thanks

Re: Folder Access permission

Dave Kreskowiak13-Nov-09 5:17

Dave Kreskowiak

13-Nov-09 5:17

Your question isn't very clear at all. I'm guessing you want to assign passwords to folders in the file system??

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Last Visit: 31-Dec-99 18:00 Last Update: 3-May-24 11:16

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