DataView / DataBindings - C# Discussion Boards

Re: Stretching/Shrinking Images

Mathew Hall13-Apr-05 2:21

Mathew Hall

13-Apr-05 2:21

You'll need to create a new Bitmap that is the desired size and then draw the original image onto the new bitmap:

Bitmap smallImage = new Bitmap(desiredX, desiredY);<br />
<br />
using (Graphics g = Graphics.FromImage(smallImage))<br />
{<br />
g.DrawImage(originalImage, new Rectangle(0, 0, desiredX, desiredY), 0, 0, originalImage.Width, originalImage.Height, GraphicsUnit.Pixel);<br />
}

"I think I speak on behalf of everyone here when I say huh?" - Buffy

Data reading from ASP.NET to C#

tgprakash13-Apr-05 1:25

tgprakash

13-Apr-05 1:25

Hi All,
I have a requirement wherein a user wil enter the data into a asp.net webpage hosted by machine A.
Machine A needs to start a C# application(as a service) when data is received and read that data using the same C#.net application, which is processed later on.

My question is, how to read the data from ASP.NET into C# application. and how to automatically start the C# application(as a service) when data is entered into asp.net webpage.

Regards,
Prax.

Re: Data reading from ASP.NET to C#

Esmo200013-Apr-05 4:27

Esmo2000

13-Apr-05 4:27

I doubt that this is the best solution to your problem but it is one way that you might go about it.

First, I'll go over the service. I don't know why you would be starting this service frequently. If it starts and stops a lot then it perhaps should not be a service but just a regular application. Do you have a good reason for that? If in really needs to be a service I would just have some code that checks if it is running. If not, there is a program called installutil (it is a part of the .NET framework so it should be there on the machine already. Also, to start processes lookup System.Diagnostics ). You can use that program to install it. Then, you can put this code in your installer

<br />
private void serviceInstaller1_AfterInstall(object sender, System.Configuration.Install.InstallEventArgs e)<br />
		{<br />
			ServiceController sc = new ServiceController("The name of the service");<br />
			if ( (sc.Status.Equals(ServiceControllerStatus.Stopped) ) )<br />
				sc.Start();<br />
		}<br />

That way, when you install the service it will start running.

Now, as to how no get the information to the service, that IS a bit tricky... What are you trying to get there? If you do end up using an application then you could consider passing it as a paramater? If you use a service... well, you could consider possibly using the MSMQ. Just serialise all your data and send it that way.

I hope this helps,
Please ask me if I can explain any of the stuff better!
Jim

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Re: Data reading from ASP.NET to C#

tgprakash13-Apr-05 20:17

tgprakash

13-Apr-05 20:17

Hi Jim..
Thanks for the response. Let me put my question in the right way. A user enters some request in to a browser. The request/data has to be transferred from the asp.net application on the server to another application on the same web server. How could I do this? How can my asp.net application communicate with another C# application. (I guess thru sockets.) How cud I open and transfer data thru sockets from asp.net application??

u'r help is greatly appreciated.

Prax.

Multiline Text input in PropertyGrid

M. Noordam13-Apr-05 1:16

M. Noordam

13-Apr-05 1:16

Hi,

In VS 2005, when you click the triangle of the 'Text' property of a TextBox, a multiline input box appears.
Does anybody know how to do this with a custom object which has a text property?

tia.

Re: Multiline Text input in PropertyGrid

MoustafaS13-Apr-05 4:48

MoustafaS

13-Apr-05 4:48

What is that custom object

Re: Multiline Text input in PropertyGrid

M. Noordam13-Apr-05 18:44

M. Noordam

13-Apr-05 18:44

Just a plain user defined object, with properties like 'Id', 'Name', 'Text', etc.

DataView / DataBindings

UschkinRedSunshine13-Apr-05 1:08

UschkinRedSunshine

13-Apr-05 1:08

Hello,

I've serious problems with dataview/databindings.
Assume the following:

I've got 2 dialogs.
- The first one has a datagrid and five textboxes attached to a dataview.
- The second one is created by the first with a DataRowView-Object, and has five textboxes and
a scrollbar attached to this row.

i)
updating a textbox in my first dialog shows changes only if i activate the datagrid, and vice versa.

ii)
updating a textbox in the second dialog shows changes in first dialog only if i activate the controls, too.

iii)
if i use my scrollbars in the second dialog to change the bound values, i immediately see changes in my first dialog, but nothing happens in the second one.

iv)
if i change the textboxes in my second dialog, and then use the scrollbars, i see no changes after all...

could someone please check out the project, and write one/two sentences to my points? i'm getting mad on this.

thanks
michael

testproject

I don't know how to use RandomNumberGenerator class.

Mohammed Aijaz Mohiuddin13-Apr-05 0:47

Mohammed Aijaz Mohiuddin

13-Apr-05 0:47

Can any one help to me in using RandomNumberGenerator class member functions. Early response is appreciated.

Re: I don't know how to use RandomNumberGenerator class.

hooray13-Apr-05 1:07

hooray

13-Apr-05 1:07

The class RandomNumberGenerator is an abstract class - that means that you cannot create instances of this class. You can only create instances of class which extends the RandomNumberGenerator class.

Then it should be no problem to use the member functions.

(if you meant something different please tell and give some more info)

Re: I don't know how to use RandomNumberGenerator class.

Sebastian Schneider13-Apr-05 1:32

Sebastian Schneider

13-Apr-05 1:32

Use System.Random instead.

Data Grid: Row Based Control

innocent7313-Apr-05 0:37

innocent73

13-Apr-05 0:37

Hello C# Developers..
Is it possible to enable a specific row in a DataGrid?I mean your grid enable property is set to false but you want to update a specific row....
If yes ,how can I do this?
Please Help...........

.NET 2.0 WebBrowser is flickering

Anonymous13-Apr-05 0:07

Anonymous

13-Apr-05 0:07

Is there a way to avoid the flickering when resizing the WebBrowser control in .NET 2.0?

Re: .NET 2.0 WebBrowser is flickering

leppie13-Apr-05 5:09

leppie

13-Apr-05 5:09

Wait for the release version to come out.

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Re: .NET 2.0 WebBrowser is flickering

Anonymous13-Apr-05 6:03

Anonymous

13-Apr-05 6:03

I can wait for it but will they fix it?

Re: .NET 2.0 WebBrowser is flickering

Dave Kreskowiak13-Apr-05 6:12

Dave Kreskowiak

13-Apr-05 6:12

Get out your crystal ball and ask it...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Erratic datagrid behaviour?

scotlandc12-Apr-05 22:53

scotlandc

12-Apr-05 22:53

Hi,

I have a 12 column datagrid populated by an Oracle 8.1.7 table.

The 'grid is clickable so that more data can be viewed according to which ever row is clicked.

On any given row, if columns 0 through 9 are clicked, there is no problem. The same is true if column 11 on a row is clicked. The problem arises only if column 10 is clicked. The error message "Column does not belong to Table" is displayed.

All column names (Header Texts) are handled in a stored procedure, the custom datagrid style only handles column widths, anyone have any idea why column 10 would behave in such a way?

I need that column in the table as it stores image paths. If it is moved to a different position ie swap columns 5 and 10 around then the application crashes if "what was column 5, now column 10" is clicked. The same happens if I set the column width to 0. The column that occupies the same screen space causes a crash yet all other columns behave as expected.

Any ideas on why this is happening or possible solutions would be greatly appreciated.

I will post code samples if necessary

Thanks lots in advance

Scotty

Registries?????????

ddmcr12-Apr-05 22:53

ddmcr

12-Apr-05 22:53

Hi everybody, i need to create registries kays and read data from registries also,in C++ i used CRegKey class is here smth similar to that . Or could anybody show an example , about how to read all data for example from :

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Regards

m0n0

Re: Registries?????????

Vasudevan Deepak Kumar13-Apr-05 4:41

Vasudevan Deepak Kumar

13-Apr-05 4:41

Hi:

The Microsoft.Win32 namespace in .NET enhances C# with Registry Manipulation capabilities.

Did this help you?

Deepak Kumar Vasudevan
Personal Web: http://vdeepakkumar.netfirms.com/
I Blog At: http://deepak.blogdrive.com/

Re: Registries?????????

ddmcr13-Apr-05 5:23

ddmcr

13-Apr-05 5:23

Yes, thanks

m0n0

PropertyGrid and Null Default Values

Tristan Rhodes12-Apr-05 22:48

Tristan Rhodes

12-Apr-05 22:48

I've got a property grid i'm using to explore object Properties, which works fine.

However, I have a bug when an enumeration option is available and there is no default value, as the moment I click on the drop down box to select the new value, it throws an "Invalid Value of 0" error.

The enumeration in question has no Zero member, so I need a way to get around this if at all possible. Maybe by catching the error I would be able to select the item, but I don't know what where to place the exception handler.

Any thoughts?

Cheers

Cata

Re: PropertyGrid and Null Default Values

leppie13-Apr-05 2:59

leppie

13-Apr-05 2:59

The Catalyst wrote:
The enumeration in question has no Zero member

All enums can and are initialized to 0 (and hence the value is valid allways). Just try it.

enum Foo
{
  Bar = 10
}

Foo foo = 0;

Best would be to write a proper TypeConvertor to handle the default value.

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Re: PropertyGrid and Null Default Values

Tristan Rhodes14-Apr-05 6:27

Tristan Rhodes

14-Apr-05 6:27

Here is the error message:

An unhandled exception of type 'System.ArgumentException' occurred in system.dll

Additional information: The value '0' is not a valid value for the enum 'SwapEffect'.

directx library

shumyla198312-Apr-05 21:35

shumyla1983

12-Apr-05 21:35

hi i need some help to find the library QuartzTypeLib.dll. and from where can i get this library.plz reply me soon.

best regards.

shumyla

labels and controls autoresize

alexcuban12-Apr-05 19:56

alexcuban

12-Apr-05 19:56

ok this is my issue

i wanna know how to resize the heigth of a simple label that has its dock value equal to top when i reduce the width my main form
note havien more than one label

if some one know how to do this plz reply this message thanks

regards Alexcuban

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