Simple .Net 2.0 Data Binding question (WinForms) - C# Discussion Boards

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Re: Windows Service Question.

HakunaMatada13-Dec-05 17:07

HakunaMatada

13-Dec-05 17:07

Is there any way to do this using code? I would want to do it during the installation process. And does a Servic failing include someone killing the process?

Thanks for your time. Smile | :)

Bikash Rai

Re: Windows Service Question.

Dave Kreskowiak12-Dec-05 19:54

Dave Kreskowiak

12-Dec-05 19:54

Bikash Rai wrote:
Firstly, I created a service so that it would not be visible in the process list of the Task Manager....Am I wrong?

Yep. All processes show up in the Task Manager, whether it's a Win Forms app or a Windows Service.

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

arranging ownedforms(owner-ownedform)

tonato84812-Dec-05 17:41

tonato848

12-Dec-05 17:41

hi,

how can i arrange my ownedforms.
IN this.addownedforms(sampleform)

thanks,
bye

tonato

Re: arranging ownedforms(owner-ownedform)

HakunaMatada12-Dec-05 18:23

HakunaMatada

12-Dec-05 18:23

Are ownedforms child forms of an MDI container? If you are talking about arranging child forms in an MDI environment then look into "Form.LayoutMdi()". You should get what you need.

Hope this helps. Smile | :)

Bikash Rai

How to lock background forms when foreground form is active?

2hdass12-Dec-05 17:24

2hdass

12-Dec-05 17:24

My application consists of a few forms. When i press a button on the main form it shows another form. Its more like a message box dialog, that I want the main form to be deactivated unil the ok button on the message form is pressed.

How do i go about doing this?? D'Oh! | :doh:

Thx thx

Re: How to lock background forms when foreground form is active?

Christian Graus12-Dec-05 17:42

Christian Graus

12-Dec-05 17:42

How do you mean ? It is deactivated, it won't respond while a modal dialog exists above it.

Christian Graus - Microsoft MVP - C++

Re: How to lock background forms when foreground form is active?

HakunaMatada12-Dec-05 18:12

HakunaMatada

12-Dec-05 18:12

I think "Form.ShowDialog()" is what you are looking for.

Hope this helps. Smile | :)

Bikash Rai

Simple .Net 2.0 Data Binding question (WinForms)

Furty12-Dec-05 15:46

Furty

12-Dec-05 15:46

I'm wrestling with the new Windows Forms data binding in .Net 2.0 without much luck.

Here's my data binding source object:

    public class UserCredentials<br />
    {<br />
        #region Fields<br />
<br />
        private string userName;<br />
        private string password;<br />
<br />
        #endregion<br />
<br />
        #region Properties<br />
<br />
        /// <summary><br />
        /// Gets or Sets the user name<br />
        /// </summary><br />
        public string UserName<br />
        {<br />
            get { return userName; }<br />
            set { userName = value; }<br />
        }<br />
<br />
        /// <summary><br />
        /// Gets or Sets the password<br />
        /// </summary><br />
        public string Password<br />
        {<br />
            get { return password; }<br />
            set { password = value; }<br />
        }<br />
<br />
        #endregion<br />
    }

I then create a simple Form with TextBoxes for the user name and password, and bind the Text property to the relevant properties in my binding source. I also have some simple validation code to check that data has been entered, and have provided a Cancel button on the Form so the user can back out of any changes made.

In the form's constructor I set the DataSource property of the BindingSource to an instance of the UserCredentials class. So far so good, the UserName and Password properties of the UserCredentials class are binding to my two TextBoxes just fine.

The problem is, I can't find any way to roll-back the changes made to my UserCredentials instance if validation fails, or the user clicks Cancel.

I'm sure it's very simple, but I just can't see it right now.. Any ideas?

Re: Simple .Net 2.0 Data Binding question (WinForms)

Ista12-Dec-05 16:09

Ista

12-Dec-05 16:09

use a BindingManagerBase object to send the values back to the data source

unfortunately, its only set up for a dataViewRow objects.

But if you extend the BindingManagerBase and a few other classes you can get there

I believe the class you need to get to is ContextManager which has the refresh method to create your own deriving it from BinidingManagerBase.

Its been a year since I did that. But, it rocks when your done.

Nick

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: Simple .Net 2.0 Data Binding question (WinForms)

Furty12-Dec-05 16:14

Furty

12-Dec-05 16:14

Hrmm, are you sure you're talking about .Net 2.0 object data binding?

It would be much easier just to Set/Get the Text properties of a couple of TextBox controls than go to that level of work.

I was really hoping the data binding in .Net 2.0 was an improvemnt over the 1.0 stuff Frown | :(

Re: Simple .Net 2.0 Data Binding question (WinForms)

bismark12-Dec-05 17:14

bismark

12-Dec-05 17:14

You need to implement IEditableObjectinterface.

And write code to BeginEdit, EndEdit and CancelEdit

You can check CSLA Framework on Internet to check how implement IEditableObject interface

Regards

Re: Simple .Net 2.0 Data Binding question (WinForms)

Furty12-Dec-05 17:51

Furty

12-Dec-05 17:51

Thanks bismark, that of course worked.

After seeing all the improvements to data binding during design time, I had hoped the powers that be had built a better mousetrap for object binding in V2.0, but not so hey.

zoom?

bobisreallycool12-Dec-05 14:49

bobisreallycool

12-Dec-05 14:49

Is there a way to zoom an image quickly that doesn't make it all fuzzy like using drawImage does. (I'm making a paint like program and I would like the pixels to stay rectangular as you zoom in). thnx

Re: zoom?

Ista12-Dec-05 15:47

Ista

12-Dec-05 15:47

use the directx libraries for that type of effeciency

I'm not an expert yet, but I play one at work. Yeah and here too.

Re: zoom?

Christian Graus12-Dec-05 15:49

Christian Graus

12-Dec-05 15:49

bobisreallycool wrote:
Is there a way to zoom an image quickly that doesn't make it all fuzzy like using drawImage does.

You can't zoom into an image without losing quality.

bobisreallycool wrote:
(I'm making a paint like program and I would like the pixels to stay rectangular as you zoom in).

Pixels are not quite rectangular, but you can keep them correctly drawn by making sure you zoom to a correct aspect ratio.

Christian Graus - Microsoft MVP - C++

help me

Rosayne12-Dec-05 14:03

Rosayne

12-Dec-05 14:03

I need an example in c# with a timer.

I never has program in this lenguage .

Soy estudiante de 4to año de Informatica

Re: help me

Christian Graus12-Dec-05 14:04

Christian Graus

12-Dec-05 14:04

Rosayne wrote:
need an example in c# with a timer.

Google 'C# timer'

Rosayne wrote:
I never has program in this lenguage .

What languages have you programmed in ? If none, then you should not worry about timers just yet, IMO.

Christian Graus - Microsoft MVP - C++

Re: help me

bismark12-Dec-05 17:16

bismark

12-Dec-05 17:16

is so easy.

please write me to my personal email, I can help you... inclusive in Spanish.

Proxy with authentication retire something

icerein12-Dec-05 13:58

icerein

12-Dec-05 13:58

Hi friends,

the follow code will be run normally in WindowsApplication:

string userName = "a";
string userPass = "a";
string address = "192.168.18.145";
int port = 8080;

WebProxy myproxy = new WebProxy(address , port);
NetworkCredential credentials = new NetworkCredential(userName, userPass, null);
myproxy.Credentials = credentials;

WebRequest rqt = WebRequest.Create(this.textBox2.Text.Trim());
rqt.Proxy = myproxy;
rqt.PreAuthenticate = true;

WebResponse rsp = rqt.GetResponse();
System.IO.Stream stream = rsp.GetResponseStream();
System.IO.StreamReader reader = new System.IO.StreamReader(stream);
this.textBox1.Text = reader.ReadToEnd();

stream.Close();
reader.Close();

but in the SmartDeviceApplication,,it will cause the problem :
The response did not contain an end of entity mark.

Can you tell me why and how to solve the problem??
Thank you !!

22

Re: Proxy with authentication retire something

Jared Parsons12-Dec-05 14:22

Jared Parsons

12-Dec-05 14:22

Which line threw the exception?

Jared Parsons
jaredp@beanseed.org
http://spaces.msn.com/members/jaredp/

Re: Proxy with authentication retire something

icerein12-Dec-05 19:11

icerein

12-Dec-05 19:11

WebResponse rsp = rqt.GetResponse();

this line.....

Re: Proxy with authentication retire something

Jared Parsons13-Dec-05 7:44

Jared Parsons

13-Dec-05 7:44

Judging by the rest of your code, the site you are accessing is something else you've written? If so it looks like that code is sending back an invalid web response.

Jared Parsons
jaredp@beanseed.org
http://spaces.msn.com/members/jaredp/

Re: Proxy with authentication retire something

icerein13-Dec-05 13:59

icerein

13-Dec-05 13:59

I think all the thing I have written....

Can you write a example of proxy with credential in SmartDeviceApplication for me??

thank you !!

Re: Proxy with authentication retire something

Jared Parsons14-Dec-05 4:52

Jared Parsons

14-Dec-05 4:52

I haven't played with this before so I can't send you any good samples. AFAIK though your client code looks correct. I think that the server/website you are accessing is sending back an invalidly formated HTML page

Jared Parsons
jaredp@beanseed.org
http://spaces.msn.com/members/jaredp/

Re: Proxy with authentication retire something

icerein14-Dec-05 13:58

icerein

14-Dec-05 13:58

Thank you!

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