Question On Using IProgress - C# Discussion Boards

Richard MacCutchan2-Jan-18 23:43

2-Jan-18 23:43

Not sure I agree. I find that the forum that works best is the one you feel most comfortable in. Many people swear by SO, and many by CodeProject, and many by others that I have not used. But as others have already said, think about what you are asking, and whether you could actually find the answer by using Google, reading a good study guide etc. I was late coming to C# (about 5 years ago) and there is still lots I don't know, but the articles here that cover the subject can answer most of my queries.

Re: C# Progammer Forum for Beginners?

User987433-Jan-18 23:49

User98743

3-Jan-18 23:49

I'm on SO every day, however, I would not recommend that for absolute beginners. You'll be calling it quits after that experience if you don't really have a desire to continue, because answers were given in the context of the time when the question was posted. So I've been really discouraged after spending a great deal of time going down rabbit holes and spending money buying books on topics that have since become outdated.

The lack of surety in programming is part of the reason software is fragile.

Re: C# Progammer Forum for Beginners?

Marc Clifton3-Jan-18 1:45

Marc Clifton

3-Jan-18 1:45

IMO a forum is the wrong, erm, forum, as what you probably want is a more of a discussion of the pros and cons to different approaches, often including not just the technical discussion but help with evaluating third party solutions vs. roll your own.

As I've mentioned to others, I enjoy mentoring and would be happy to help. If this whole mentoring thing takes off with more than a few people, I might set up a Slack (or similar) site!

Latest Article - Code Review - What You Can Learn From a Single Line of Code

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Re: C# Progammer Forum for Beginners?

User987433-Jan-18 23:39

User98743

3-Jan-18 23:39

Yeah, something like that! If I worked with developers, I could just hit one of them up on Skype, but I'm a firefighter and don't have access to that now. It will be less important to me when I get a job in the tech industry again, but until then, I'm pretty isolated.

The lack of surety in programming is part of the reason software is fragile.

Re: C# Progammer Forum for Beginners?

BillWoodruff4-Jan-18 4:29

BillWoodruff

4-Jan-18 4:29

@RickBishop It seems to me that you have been getting good responses on the QA forums here. Have you accepted any of the solutions ? Do you respond promptly to queries that ask you to clarify your posts ?

Compared to StackOverFlow, CP is 1000% gentler, kinder Smile | :)

cheers, Bill

«While I complain of being able to see only a shadow of the past, I may be insensitive to reality as it is now, since I'm not at a stage of development where I'm capable of seeing it.» Claude Levi-Strauss (Tristes Tropiques, 1955)

Re: C# Progammer Forum for Beginners?

User987434-Jan-18 5:50

User98743

4-Jan-18 5:50

@BillWoodruff I'm very pleased with Code Project and I agree with you completely. I wasn't wanting to replace it. I was hoping for a resource to ask quick questions, nothing that requires digging through code and whatnot. Just ask for some quick advice, like "do you see this in the real world?" and "Is there an easier way to handle NULL values than == null?" stuff like that.

The lack of surety in programming is part of the reason software is fragile.

Re: C# Progammer Forum for Beginners?

BillWoodruff4-Jan-18 21:09

BillWoodruff

4-Jan-18 21:09

Hi Rick,

I think the kind of questions you mention are fair game for QA.

I hypothesize that some questions that appear simple are hard to distinguish from questions dashed off by folks who are looking for a quick fix for homework ... so many of those on QA.

Other questions that QA responders may see as being an indication that the OP is not engaging in basic research, is not taking the time to read the docs ... those questions, imho, may also get ignored, or dismissed with a quick reply.

For me, I know that anyone who shows responsiveness to my attempts to clarify questions in comments, or responds quickly, and in depth, if I respond with code or links to resources ... well, I am motivated to engage further.

cheers, Bill

Question On Using IProgress

Kevin Marois2-Jan-18 12:51

Kevin Marois

2-Jan-18 12:51

I'm uploading files to a server. The FTP class reports progress:

foreach (var file in publishInfo.Files)
{
    Progress<double> progress = new Progress<double>(x =>
    {
        ShowProgress("", x);  //<<==== HOW DO I GET FILE FROM THE FOREACH IN HERE?
    });

    client.UploadFile(file.FileName, targetFile, FtpExists.Overwrite, true, FtpVerify.Throw, progress);
}

then...

private void ShowProgress(FileEntity file, double progress)
{
//Do something here
}

I need to pass the loop object 'file' to the ShowProgress method. How do I get access it inside the progress callback?

If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.

Re: Question On Using IProgress

Kenneth Haugland3-Jan-18 18:48

Kenneth Haugland

3-Jan-18 18:48

Using delegate command like this:
The Progress Reporting Pattern in C# 5 async[^] ?

what is the C# code to read TYPES.cursortype in procedure

sudipta saha1-Jan-18 21:31

sudipta saha

1-Jan-18 21:31

I have a stored procedure like this

PROCEDURE PRC_ABCD_GETALL (resultset_out OUT TYPES.cursorType)  
AS  
BEGIN  
OPEN  
resultset_out FOR SELECT * FROM ABCD;  
END PRC_ABCD_GETALL;

using (OracleConnection conn = new OracleConnection(cnn))
{
   conn.Open();
   OracleCommand cmd = new OracleCommand();
   cmd.Connection = conn;
   cmd.CommandText = "PRC_ABCD_GETALL";
   cmd.CommandType = CommandType.StoredProcedure;
   cmd.Parameters.Add("resultset_out", OracleType.Cursor, ParameterDirection.Output);
   OracleDataReader rdr = cmd.ExecuteReader();
   while (rdr.Read())
   {
      result.Add(Construct(rdr));
   }
}

but I'm getting error 'OracleDbType' does not contain a definition for 'Cursor' in
OracleType.Cursor. Any solution for this??

Re: what is the C# code to read TYPES.cursortype in procedure

Luc Pattyn2-Jan-18 12:45

Luc Pattyn

2-Jan-18 12:45

Hi,

I'm not familiar with OracleDB, however reading one page of documentation[^] suggests you might want RefCursor.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: what is the C# code to read TYPES.cursortype in procedure

sudipta saha2-Jan-18 20:40

sudipta saha

2-Jan-18 20:40

hi luc,thanks for reply Smile | :)

. let me try it using refCursor Smile | :)

Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk31-Jan-18 20:17

turbosupramk3

1-Jan-18 20:17

I'm using the code below to temporarily set a window to top most foreground. How can I return it to the standard function of being in the foreground depending on the last time it was touched by the mouse? I can't seem to figure out which uint32 to use to achieve what I'd like?

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
        private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);

        private const UInt32 SWP_NOSIZE = 0x0001;
        private const UInt32 SWP_NOMOVE = 0x0002;
        private const UInt32 SWP_NOZORDER = 0x0004;
        private const UInt32 SWP_NOREDRAW = 0x0008;
        private const UInt32 SWP_NOACTIVATE = 0x0010;
        private const UInt32 SWP_DRAWFRAME = 0x0020;
        private const UInt32 SWP_FRAMECHANGED = 0x0020;
        private const UInt32 SWP_SHOWWINDOW = 0x0040;
        private const UInt32 SWP_HIDEWINDOW = 0x0080;
        private const UInt32 SWP_NOCOPYBITS = 0x0100;
        private const UInt32 SWP_NOOWNERZORDER = 0x0200;
        private const UInt32 SWP_NOREPOSITION = 0x0200;
        private const UInt32 SWP_NOSENDCHANGING = 0x0400;
        private const UInt32 SWP_DEFERERASE = 0x2000;
        private const UInt32 SWP_ASYNCWINDOWPOS = 0x4000;

        private const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE;
        private const UInt32 NOTOPMOST_FLAGS = SWP_SHOWWINDOW;

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);


SetWindowPos(this.Handle, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS);

Thanks!

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Richard MacCutchan1-Jan-18 23:07

Richard MacCutchan

1-Jan-18 23:07

Us one of the other flags as described in the documentation: SetWindowPos function (Windows)[^].

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk32-Jan-18 4:40

turbosupramk3

2-Jan-18 4:40

Hi,

I've tried multiple variations of what I think is correct and it is not working. Here is an example of what I thought was correct

SetWindowPos(this.Handle, HWND_TOP, 120, 240, 200, 400, 0);

Can you tell me what I'm doing wrong? When using the above code, the window is still at the top most, even when I click on another window to bring it to the foreground.

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Richard MacCutchan2-Jan-18 5:38

Richard MacCutchan

2-Jan-18 5:38

It all seems to work for me. Can you provide some more details of exactly what you are doing, and exactly what results you get?

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk32-Jan-18 6:22

turbosupramk3

2-Jan-18 6:22

Sure, I am having the program go to top most after a button click and then selecting coordinates on the screen with the mouse and clicking another button to send keys to those coordinates and then after it is done I'd like for it to go back to standard Z order, but it is staying at top most.

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Richard MacCutchan2-Jan-18 6:42

Richard MacCutchan

2-Jan-18 6:42

Fine, but we cannot guess what your code is actually doing.

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk32-Jan-18 7:33

turbosupramk3

2-Jan-18 7:33

Here is the button click function, would you like me to copy/paste the entire code?

private void btnSelectTypingBox_Click(object sender, EventArgs e)
        {
            try
            {
                if (tempBlocker == false)
                {
                    ////MessageBox.Show("1");
                    if (btnSelectTypingBox.Text == "Select Box")
                    {
                        btnSelectTypingBox.Text = "Waiting";
                        tempBlocker = false;
                        SetWindowPos(this.Handle, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS); // set window foreground to top most window
                    }
                    else if (btnSelectTypingBox.Text == "Waiting")
                    {
                        btnSelectTypingBox.Text = "Select Box";
                    
                    }
                }         
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + " | " + ex.Source + " | " + ex.InnerException + " | " + ex.StackTrace);
            }
        }

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Luc Pattyn2-Jan-18 12:41

Luc Pattyn

2-Jan-18 12:41

How about

SetWindowPos(this.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE| SWP_NOZORDER);

?

some extra SWP values might be required...

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk32-Jan-18 13:08

turbosupramk3

2-Jan-18 13:08

Hi Luc,

Here is what I tried, but it did not work for me

private void btnTest_Click(object sender, EventArgs e)
       {
           SetWindowPos(this.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER);
        }

And here is my pininvoke code

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
        private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
        private static readonly IntPtr HWND_TOP = new IntPtr(0);

        private const UInt32 SWP_NOSIZE = 0x0001;
        private const UInt32 SWP_NOMOVE = 0x0002;
        private const UInt32 SWP_NOZORDER = 0x0004;
        private const UInt32 SWP_NOREDRAW = 0x0008;
        private const UInt32 SWP_NOACTIVATE = 0x0010;
        private const UInt32 SWP_DRAWFRAME = 0x0020;
        private const UInt32 SWP_FRAMECHANGED = 0x0020;
        private const UInt32 SWP_SHOWWINDOW = 0x0040;
        private const UInt32 SWP_HIDEWINDOW = 0x0080;
        private const UInt32 SWP_NOCOPYBITS = 0x0100;
        private const UInt32 SWP_NOOWNERZORDER = 0x0200;
        private const UInt32 SWP_NOREPOSITION = 0x0200;
        private const UInt32 SWP_NOSENDCHANGING = 0x0400;
        private const UInt32 SWP_DEFERERASE = 0x2000;
        private const UInt32 SWP_ASYNCWINDOWPOS = 0x4000;

        private const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE;
        private const UInt32 NOTOPMOST_FLAGS = SWP_SHOWWINDOW;

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Luc Pattyn2-Jan-18 13:31

Luc Pattyn

2-Jan-18 13:31

Hi,

two things:

1. "did not work for me" isn't helpful; what did it do? and what did it not do that you were hoping to get? please be precise.

2. why is this in a new Click handler, I was expecting this to go in the else block, as counterpart to your SetWindowPos(this.Handle, HWND_TOPMOST...).

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk33-Jan-18 2:51

turbosupramk3

3-Jan-18 2:51

It did not remove the topmost flag as the application is still set to topmost. I would like it to go from a topmost application back to a standard z ordered application as it is before the topmost flag is set.

I was testing it with a test button for simplification is all, as soon as I get a working example I will then incorporate it into an else block

Re: Problem with setwindowPOS and returning from topmost to standard window position?

Richard MacCutchan3-Jan-18 23:18

Richard MacCutchan

3-Jan-18 23:18

The problem is that your X, Y, cx and cy values are all zero, and when you switch to NoTopMost, you have omitted the flags to keep the size and position. Edit your code and replace the definition of NOTOPMOST_FLAGS with the following.

private const UInt32 NOTOPMOST_FLAGS = TOPMOST_FLAGS | SWP_SHOWWINDOW;

Had you explained exactly what happened when you ran your code we could have helped earlier.

Re: Problem with setwindowPOS and returning from topmost to standard window position?

turbosupramk35-Jan-18 16:43

turbosupramk3

5-Jan-18 16:43

Thank you.

Strangely enough when I have the above code in a separate button it removes the topmost flag correctly, but when I have it at the end of the send.keys function it does not remove the topmost flag? Any ideas on what could be causing that?

modified 5-Jan-18 22:58pm.

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