C# Discussion Boards - CodeProject

Re: C# code SQL connection

9-Mar-08 11:38

The right way to do this is to have one method for connecting to SQL Server, inside your data layer which contains the code to call all your stored procs. The traditional way to do this badly, is to write SQL code inside every page/form that uses it. The new disasterous way is to still write SQL in the presentation layer, but use methods provided by the controls to do it.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Ravenet9-Mar-08 16:35

Ravenet

9-Mar-08 16:35

Hi

I think may be help to you.

http://msdn2.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.aspx[^]

thanks

Cheers,Earn and Enjoy
RRave
MCTS,MCPD
http://ravesoft.blogspot.com

Simple way to round a decimal?

Joplinazz9-Mar-08 10:23

Joplinazz

9-Mar-08 10:23

Hi!
I need a simple way to round a Decimal variable to a specific number of decimals.
Any suggestions? Isn't there any function that works something like: math.round(theVariable, 2), to get 2 decimals?

/Joplinazz

Re: Simple way to round a decimal?

Christian Graus9-Mar-08 10:58

Help with printDocument and printPreviewControl

9-Mar-08 10:58

Yes, there is, why did you guess there might me, and not look ?

Math.Round(12.42332334, 2, MidpointRounding.ToEven)

Jacob Dixon9-Mar-08 8:09

Re: Help with printDocument and printPreviewControl

9-Mar-08 8:09

Ok someone on here mentioned to me that I should use a printDocument to create the pages I want to create. Basically I have each child that has a record of their payments they have made. Now at the end of the year for each child I want to print the record for them. At the top of the page will be our information and social security numbers for tax purposes and below that in the center of the page will be the childs name.

Then below that will be 3 columns for the payments they made which look like this:

$75 --> Paid on: 03/03/08

and so on..

Now I have it print to a print document and you can view the information on my form (printPreviewControl). But when you click print preview, the layout is totally different from the printPreviewControl on the form. Why is this? When you click print preview and the dialog pops up it is missing half the information!

Is this the way I should be doing this or is there an easier/different way? It should also print all the information for all the children, not just one child at a time. So there will be multiple pages involved ( about 5 ).

Jacob Dixon9-Mar-08 9:28

Re: Help with printDocument and printPreviewControl

9-Mar-08 9:28

Ok I have changed some things, but for some reason the printpreviewControl displays what I write to the printDocument. But the PrintPreviewDialog displays nothing? I have the printpreviewdialog document set to my printDocument1

whats wrong?

Christian Graus9-Mar-08 11:04

Re: Help with printDocument and printPreviewControl

9-Mar-08 11:04

We really need to see your code to be able to tell you what you did wrong.

Jacob Dixon9-Mar-08 11:21

Re: Help with printDocument and printPreviewControl

9-Mar-08 11:21

I will post it, its kind of long.. but here it is:

public void getChilds(int Ccount)
{
    string path = Directory.GetCurrentDirectory();
    DirectoryInfo dInfo = new DirectoryInfo(path + @"\Children\");
    DirectoryInfo[] dirs = dInfo.GetDirectories();
    printPreviewControl1.Rows = dirs.Length;
    if (dirs.Length == Ccount)
    {
        currentChild = "Done";
        return;
    }

    if (currentChild != "Done")
    {
        switch (Ccount)
        {
            case 0:
                currentChild = dirs[0].Name;
                currentChildPath = dInfo + dirs[0].Name + @"\";
                break;
            case 1:
                currentChild = dirs[1].Name;
                currentChildPath = dInfo + dirs[1].Name + @"\";
                break;
            case 2:
                currentChild = dirs[2].Name;
                currentChildPath = dInfo + dirs[2].Name + @"\";
                break;
            case 3:
                currentChild = dirs[3].Name;
                currentChildPath = dInfo + dirs[3].Name + @"\";
                break;
            case 4:
                currentChild = dirs[4].Name;
                currentChildPath = dInfo + dirs[4].Name + @"\";
                break;
            case 5:
                currentChild = dirs[5].Name;
                currentChildPath = dInfo + dirs[5].Name + @"\";
                break;
            case 6:
                currentChild = dirs[6].Name;
                currentChildPath = dInfo + dirs[6].Name + @"\";
                break;
            case 7:
                currentChild = dirs[7].Name;
                currentChildPath = dInfo + dirs[7].Name + @"\";
                break;
            case 8:
                currentChild = dirs[8].Name;
                currentChildPath = dInfo + dirs[8].Name + @"\";
                break;
            case 9:
                currentChild = dirs[9].Name;
                currentChildPath = dInfo + dirs[9].Name + @"\";
                break;
            default:
                currentChild = "Done";
                return;
        }
        childCount++;
    }
    else
    {
        return;
    }
}

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
    getChilds(childCount);
    if (currentChild == "Done")
    {
        e.HasMorePages = false;
        return;
    }

    else
    {
        float x = e.PageBounds.Left;
        float r = e.MarginBounds.Right;
        float y = e.PageBounds.Top;
        float b = e.PageBounds.Bottom;
        float c = e.MarginBounds.Width / 2;

        e.Graphics.DrawString(top[0], new Font("Arial", 10), Brushes.Blue, r, y, new StringFormat(StringFormatFlags.DirectionRightToLeft));
        y += 1 + new Font("Arial", 10).GetHeight();
        e.Graphics.DrawString(top[1].ToString(), new Font("Arial", 10), Brushes.Blue, r, y, new StringFormat(StringFormatFlags.DirectionRightToLeft));
        y += 1 + new Font("Arial", 10).GetHeight();
        e.Graphics.DrawString(top[2], new Font("Arial", 10), Brushes.Blue, r, y, new StringFormat(StringFormatFlags.DirectionRightToLeft));
        y += 1 + new Font("Arial", 10).GetHeight();
        e.Graphics.DrawString(top[3], new Font("Arial", 10), Brushes.Blue, r, y, new StringFormat(StringFormatFlags.DirectionRightToLeft));
        y += (new Font("Arial", 10).GetHeight() * 2);

        e.Graphics.DrawString(currentChild, new Font("Times New Roman", 14, FontStyle.Bold ^ FontStyle.Underline), Brushes.Red, c - (currentChild.Length / 2), y, new StringFormat());

        FileStream fileOpen = new FileStream(currentChildPath + "Paid.daycare", FileMode.Open, FileAccess.Read);
        StreamReader fileSR = new StreamReader(fileOpen);
        string strLine = fileSR.ReadLine();
        times = 0;
        y += new Font("Times New Roman", 14, FontStyle.Bold ^ FontStyle.Underline).GetHeight();
        centerLine = y;
        rightLine = y;
        while (strLine != null)
        {
            if (times < 31)
            {
                y += 2 + new Font("Arial", 12).GetHeight();
                e.Graphics.DrawString(strLine, new Font("Arial", 10), Brushes.Black, x, y, new StringFormat());
                strLine = fileSR.ReadLine();
                times++;
            }
            else if (times > 30 && times < 61)
            {
                centerLine += 2 + new Font("Arial", 12).GetHeight();
                e.Graphics.DrawString(strLine, new Font("Arial", 10), Brushes.Black, c - strLine.Length, centerLine, new StringFormat());
                strLine = fileSR.ReadLine();
                times++;
            }
            else if (times > 60 && times < 91)
            {
                rightLine += 2 + new Font("Arial", 12).GetHeight();
                e.Graphics.DrawString(strLine, new Font("Arial", 10), Brushes.Black, r, rightLine, new StringFormat(StringFormatFlags.DirectionRightToLeft));
                strLine = fileSR.ReadLine();
                times++;
            }
        }
        e.HasMorePages = true;
    }
}

A lot of that is to make it print like 30 lines, then if it is over 30 lines then it prints in the center of the page, then if it is over 60 lines then it starts printing on the right side of the page.

Now my problem is, that it prints correctly to the PrintPreviewControl, but it just prints a blank page when you click print!

private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
    printDocument1.Print();
}

the printpreviewControl document is set to: printDocument1. The printDocument1 name is printDocument1, but why does it print a blank page when this code actually prints the information to the printDocument and it SHOWS it on the printPreviewControl?

Christian Graus9-Mar-08 11:43

Re: Help with printDocument and printPreviewControl

9-Mar-08 11:43

Jacob Dixon wrote:
y += 1 + new Font("Arial", 10).GetHeight();

I can see that you're leaking a lot of resources by doing this over and over. Why not keep a font as a member variable ?

Jacob Dixon wrote:
FileStream fileOpen = new FileStream(currentChildPath + "Paid.daycare", FileMode.Open, FileAccess.Read); StreamReader fileSR = new StreamReader(fileOpen);

You also never close your files, might your test involve a printpreview then a print, and the print fails b/c the files are still open ?

Have you set a breakpoint and stepped through to try to work out what could be different when you print ? Does nothing print at all ?

Jacob Dixon9-Mar-08 11:51

Re: Help with printDocument and printPreviewControl

9-Mar-08 11:51

I did forget those to close those but it didn't show an error. I'm just trying to figure out why it doesn't print... It actually "PRINTS" but it just prints a blank page and nothing that I drew on the printDocument.. why is it printing a blank page?

Jacob Dixon9-Mar-08 12:17

Re: Help with printDocument and printPreviewControl

9-Mar-08 12:17

Ok I have fixed the leaks you were talking about and used it as a variable.
I have also closed the files after I was finished with them.

It still prints, but just prints a blank page!
How's this possible when I have written to the printDocument before asking it to print?

Jacob Dixon9-Mar-08 12:34

Re: Help with printDocument and printPreviewControl

9-Mar-08 12:34

Ok I took away the printpreviewcontrol and now it prints all the information??

bhavik s25-May-11 1:27

bhavik s

25-May-11 1:27

How to Export data from PrintDocument or PrintPreview Control? Confused | :confused:

I have data(Report) in PrintDocument and I want to save that in .Pdf....

-Bhavik
bhaviks@yahoo.com

Bhavik Shah
6, Gautam Appartment,
Opp. Agam mandir,
Gopipura,
Surat, Gujarat, India
9687478087

Channels

ytubis9-Mar-08 7:36

ytubis

9-Mar-08 7:36

Hi!
I am trying to work with Channels.
I implimented the 3.5 frameWork
And the IDE does not know this pakcage:
System.Runtime.Remoting.Channels.Tcp

What am i doing wrong?

Thanks Smile | :)

Luc Pattyn9-Mar-08 8:27

Luc Pattyn

9-Mar-08 8:27

Hi,

you will get Intellisense while typing TcpChannel a=new TcpChannel();
provided you have a using System.Runtime.Remoting.Channels.Tcp; line
at the top of the relevant file(s). That in turn requires you provide your project
with a reference to the .NET component called "System.Runtime.Remoting" (right
click in the solution pane and choose Add Reference...).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.

ytubis9-Mar-08 9:51

ytubis

9-Mar-08 9:51

Hi!
I get this line:

Error 1 The type or namespace name 'Tcp' does not exist in the namespace 'System.Runtime.Remoting.Channels' (are you missing an assembly reference?) C:\Documents and Settings\Yossi_Tubis\My Documents\Visual Studio 2005\Projects\WindowsApplication1\WindowsApplication1\Form1.cs 9 40 WindowsApplication1

what should i do??

Thanks Smile | :)

Luc Pattyn9-Mar-08 10:18

Luc Pattyn

9-Mar-08 10:18

either reread my earlier reply and pay attention to all the details,
or publish OS,VS,.NET versions and all relevant code.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Christian Graus9-Mar-08 11:05