C# Discussion Boards - CodeProject

Re: how made a factor i c#

Nathan Stiles23-Jan-12 10:46

Nathan Stiles

23-Jan-12 10:46

http://www.stimulsoft.com/ReportsNet.aspx

Create XML file with C#

RivasBoy21-Jan-12 7:26

RivasBoy

21-Jan-12 7:26

I developed an application in C # where I have 4 text boxes and a datagrid with 4 columns and multiple rows and a button.

The button should generate an xml file.

I can create the xml file and write the data from text boxes, but not the DataGrid.

Anyone can help me?

At this moment i have this code:

In the button action

XmlTextWriter writer = new XmlTextWriter("teste.xml", Encoding.GetEncoding("ISO-8859-1"));
Writer.Formatting = Formatting.Indented;

// for the textboxes:

WriteStartElement("textbox1");
WriteElementString(textbox1.text);
WriteEndElement();
WriteStartElement("textbox2");
WriteElementString(textbox2.text);
WriteEndElement();
WriteStartElement("textbox3");
WriteElementString(textbox3.text);
WriteEndElement();
WriteStartElement("textbox4");
WriteElementString(textbox4.text);
WriteEndElement();
WriteStartElement("textbox4");
WriteElementString(textbox4.text);
WriteEndElement();

For the datadridview xml output strutured shoud be like this:

XML

<Tabela>
<Tabela-Linha numero="1">
<Id>01</id>
<Nome>Teste1</Nome>
<Cargo>xxx</Cargo>
<Extensao>500</Extensao>
</Tabela-Linha>
<Tabela-Linha numero="2">
<Id>02</id>
<Nome>teste2</Nome>
<Cargo>xxxx</Cargo>
<Extensao>501</Extensao>
</Tabela-Linha>
</Tabela>

Can anyone help me?

Re: Create XML file with C#

Eddy Vluggen21-Jan-12 11:24

Eddy Vluggen

21-Jan-12 11:24

How about foreaching the

<a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.rows.aspx">Rows</a>[<a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.rows.aspx" target="_blank" title="New Window">^</a>]

collection of the grid, writing the contents of all the

<a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.columns.aspx">Columns</a>[<a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.columns.aspx" target="_blank" title="New Window">^</a>]

using the method you already used?

object value = dataGridView1.Rows[RowIndex].Cells[ColumnIndex].Value;

Bastard Programmer from Hell Suspicious | :suss:

Re: Create XML file with C#

Nathan Stiles23-Jan-12 10:48

Nathan Stiles

23-Jan-12 10:48

How about using a serializable object as the datasource for the grid then serialize the object?

.NET Framework 4.0 and 2.0

MAW3020-Jan-12 11:23

MAW30

20-Jan-12 11:23

Does .NET Framework 4.0 have every thing in it that .NET Framework 2.0 has. If I have a program that worked on .Net Framework 2.0 will it necessarily work on .Net Framework 4.0.

Regards,
Michael

Re: .NET Framework 4.0 and 2.0

Richard Andrew x6420-Jan-12 11:54

Richard Andrew x64

20-Jan-12 11:54

Here's a link that addresses your concerns:

.NET Framework 4 Migration Issues[^]

The difficult we do right away...
...the impossible takes slightly longer.

Re: .NET Framework 4.0 and 2.0

jschell20-Jan-12 12:42

jschell

20-Jan-12 12:42

And to be safe you really need to fully test it.

Re: .NET Framework 4.0 and 2.0

Shameel20-Jan-12 18:57

Shameel

20-Jan-12 18:57

Microsoft has a very good track record when it comes to backward compatibility. So, it must work barring some minor issues. Check the link in the first answer for known issues.

Re: .NET Framework 4.0 and 2.0

PIEBALDconsult21-Jan-12 3:12

PIEBALDconsult

21-Jan-12 3:12

Mostly, but some things have been obsolesced, which makes developing for multiple versions difficult.

One example:

            Reader = new System.Xml.XmlReaderSettings() 
            {
                ValidationType = System.Xml.ValidationType.Schema
            ,
# if DotNet_2_0 || DotNet_3_0 || DotNet_3_5
                ProhibitDtd = false
# endif

# if DotNet_4_0
                DtdProcessing = System.Xml.DtdProcessing.Parse
# endif
            ,
                XmlResolver = new System.Xml.XmlUrlResolver()
                {
                    Credentials = System.Net.CredentialCache.DefaultNetworkCredentials
                }
            } ;

And unfortunately there are no built-in macroes defined for the version so you have to define your own. Mad | :mad:

Size Image in PictureBox

Steve Harp20-Jan-12 9:40

Steve Harp

20-Jan-12 9:40

Hi Guys,

I have a PictureBox control in a WinForms application where I need to display the image at the maximum height allowable by the screen size without changing the image's height to width relationship.

The Picture box is docked to the right of the form. Setting the image height is easy enough but calculating the width is problematic as screen pixels aren't square.

How can I calculate the width with the image displayed to it's maximum height without distorting the image? I don't know the actual screen measurements; only the resolution.

Thanks......

Re: Size Image in PictureBox

Dave Kreskowiak20-Jan-12 10:29

Dave Kreskowiak

20-Jan-12 10:29

Have you tried setting the PictureBox's SizeMode property to Zoom??

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Size Image in PictureBox

Richard MacCutchan20-Jan-12 22:06

Richard MacCutchan

20-Jan-12 22:06

I don't think you can unless the height to width ratio of the picture box exactly matches that of the image. Your resulting image will either be distorted or too wide/narrow for the picture box. This article[^] explains the issue and offers a solution which may help you; the code is C++ but should be easy to understand.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: Size Image in PictureBox

Luc Pattyn20-Jan-12 22:41

Luc Pattyn

20-Jan-12 22:41

PictureBoxSizeMode.Zoom will perform an isotropic rescale such that the image fits one or both dimensions of the PB without clipping.
MSDN explains it rather well here[^].

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: Size Image in PictureBox

Richard MacCutchan20-Jan-12 23:04

Richard MacCutchan

20-Jan-12 23:04

Thanks; isn't it just so easy in C#?

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: Size Image in PictureBox

Steve Harp23-Jan-12 5:33

Steve Harp

23-Jan-12 5:33

Thanks. The solution shown in the C++ article shows how to size the image and then it's just a matter of setting the PictureBox ClientSize to the image size. This seems to size the image correctly and maintains the ratio.

Re: Size Image in PictureBox

Richard MacCutchan23-Jan-12 6:35

Richard MacCutchan

23-Jan-12 6:35

And, as Luc pointed out above, the PictureBox looks after things automatically.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

Re: Size Image in PictureBox

Luc Pattyn23-Jan-12 16:07

Luc Pattyn

23-Jan-12 16:07

Yeah, it's about the only useful feature it offers.
I can't understand why people insist on painting on top of a PB, then find it difficult to correlate mouse location with picture pixels.

Big Grin | :-D

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: Size Image in PictureBox

Richard MacCutchan23-Jan-12 23:07

Richard MacCutchan

23-Jan-12 23:07

Probably because they don't make proper use of the documentation.

Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman

DataBinding

MWRivera20-Jan-12 9:37

MWRivera

20-Jan-12 9:37

Hi All,

I have an array of UserRights (class that holds the rights for an individual table) called arrTables and an array of controls called arrControls (10 of each type of control needed). The arrControls are displayed/listed on a Windows form (TableName, ViewRights, EditRights...) so that the data for 10 tables can be viewed at one time. I've bound the data to the form controls using the following code:

for (int iLoop = 0; iLoop < 10; iLoop++)
{
    ctrlQAControls[iLoop, 0].DataBindings.Clear();
    ctrlQAControls[iLoop, 0].DataBindings.Add(new Binding("Text", arrTables, "TableName"));
    currencyMgr.Position++;
}

When I try and display the form to the user data from the 10th table stored in the arrTables array is displayed in all 10 sets of controls. I learnt that the CurrencyManager holds the value of the Current possition and that is the reason for these results.

Is there a way around or an alternative way to implement this without hacing to use a datGridView or other list control?

Thank you

Re: DataBinding

Dave Kreskowiak20-Jan-12 10:27

Dave Kreskowiak

20-Jan-12 10:27

It sounds as though you should be using a view of the data instead of binding to 10 different datasource all at once.

But since you appear to want 10 seperate data navigations going on at the same time you'd use 10 BindingSource objects, each having its DataSource property set to the table you want it to navigate over, then set each controls DataSource property to the BindingSource it should be using.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: DataBinding

MWRivera25-Jan-12 9:11

MWRivera

25-Jan-12 9:11

Hi Dave,

Thank you for your reply. I've attempted to follow the steps above only the array of controls doesn't have a DataSource method, so I'm unable to set the DataSource of the controls in the array to a BindingSource. Here is what I have:

BindingSource bs1 = new BindingSource();
bs1.DataSource = arrTables;

ctrlQAControls[0, 0].?!?;

Could you tell me how I would go about assigning each controls DataSource property, in the array to a given BindingSource?

Thank you

Re: DataBinding

BobJanova22-Jan-12 12:46

BobJanova

22-Jan-12 12:46

If you want to have 10 separate controls each bound to one of the 10 model objects, then you don't need to bother with a currency manager:

for (int iLoop = 0; iLoop < 10; iLoop++)
{
    ctrlQAControls[iLoop, 0].DataBindings.Clear();
    ctrlQAControls[iLoop, 0].DataBindings.Add(new Binding("Text", arrTables[iLoop], "TableName"));
}

This does seem like a situation where you should be binding to some sort of list control though.

PS you should ditch the Hungarian type naming when you're writing C# code.

Re: DataBinding

MWRivera25-Jan-12 3:46

MWRivera

25-Jan-12 3:46

Hi Dave/Bob,
Thank you both for your feedback. I'm going to try the BindingSource objects recomendation now.

Bob- the method you sujected, does this take into account that there are more than 10 objects that need to be binded to the controls? There will be 10 objects bound at any one time, but then I have next and previous buttons to display the next and previous 10 objects.

Thank you again

Object naming convention

Ciumac Sergiu20-Jan-12 9:24

Ciumac Sergiu

20-Jan-12 9:24

Hi guys,
The question is of pure interest: how do you prefer naming a variable/parameter of type Object?
Most of the time it depends upon the logic of its usage, but not always. Sometimes you just want to express a generic entity:

public byte[] Encrypt(Object x)
public byte[] Serialize(Object o)

Its tempting to name x as obj or objToEncrypt, but it sounds more like a Hungarian notation.
So how would you consider naming it?

Message Removed

20-Jan-12 9:49

N_tro_P

20-Jan-12 9:49

Message Removed

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