C# Discussion Boards - CodeProject

Re: Adding InnerText of Child Nodes having same tags into a list.

faiza.butt8928-Jul-12 6:07

faiza.butt89

28-Jul-12 6:07

Thank you so much, adding another loop solved my problem. Smile | :)

Re: Adding InnerText of Child Nodes having same tags into a list.

OriginalGriff28-Jul-12 21:07

OriginalGriff

28-Jul-12 21:07

You're welcome!

Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water

Re: Adding InnerText of Child Nodes having same tags into a list.

PIEBALDconsult28-Jul-12 5:16

PIEBALDconsult

28-Jul-12 5:16

You need to use SelectNodes to get them, not SelectSingleNode, and I would use one loop:

foreach(XmlNode ph in nodeList.SelectNodes("//overseas_sale_ad[external_id='R214']/photos/photo"))
{
  ElementsList.Add(ph.InnerText);
}

Brush up on XPath.

I would also use a List<string> rather than an ArrayList -- no one uses ArrayList anymore.

Re: Adding InnerText of Child Nodes having same tags into a list.

faiza.butt8928-Jul-12 6:11

faiza.butt89

28-Jul-12 6:11

'System.Xml.XmlNodeList' does not contain a definition for 'SelectNodes' and no extension method 'SelectNodes' accepting a first argument of type 'System.Xml.XmlNodeList' could be found (are you missing a using directive or an assembly reference?)

Thank you for your reply. I am getting this error. But no problem I got my solution Smile | :)

Re: Adding InnerText of Child Nodes having same tags into a list.

PIEBALDconsult29-Jul-12 16:30

PIEBALDconsult

29-Jul-12 16:30

Oh, yeah, you need a node. No biggy. You should still only need one loop.

faiza.butt89 wrote:
I got my solution

modified 30-Jul-12 9:51am.

re-activate form

Jassim Rahma27-Jul-12 23:13

Jassim Rahma

27-Jul-12 23:13

I am using myform.Activate() to activate MDI Child form and running a code on activation. what is the form already active? is it possible to re-activate so my code will run again on activation?

Re: re-activate form

Dave Kreskowiak28-Jul-12 3:43

Dave Kreskowiak

28-Jul-12 3:43

Move the code to it's own method.

You're depending on a simple specific behavior of a form to trigger the exection of code that needs to be triggered under varying circumstances. move the code to it's own method so you can call it from Form.Activate and other events as needed. I have no idea what you're doing or why this code needs to be executed on Activate so it's impossible to suggest something appropriate.

The only way to get Activate to fire again is to make another form active and then make your target form active again. The problem with that is the active form will redraw itself to be on top or your real target form and then the target form will again redraw itself on top of the others, making your form "flash".

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

ASP.NET ValidationSummary not displaying RegularExpressionValidator results?

jojoba201127-Jul-12 20:15

jojoba2011

27-Jul-12 20:15

I have a page with a few validation controls and a ValidationSummary control. Most of the validation controls are RequiredFieldValidator controls and the summary control displays these messages just fine.

I do have a RegularExpressionValidator that checks for the format of an email address. If the address isn't entered correctly my error message from this control isn't being displayed by my summary control.

I know the problem isn't with my regular expression as I can display the error message by the regex control if I change the Display setting.

ValidationSummary doesn't just work with RequiredFieldValidator does it? That would be less than helpful.

My code :

ASP

<asp:ValidationSummary ID="ValidationSummary1" ValidationGroup="Test" HeaderText="You must enter a value in the following fields:"
            DisplayMode="BulletList" EnableClientScript="False" runat="server" />

ASP

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ValidationGroup="Test" ControlToValidate="txtReqDuration"
                   ErrorMessage="Enter a valid number" Display="None" ValidationExpression="^([\d]{0,2})$"></asp:RegularExpressionValidator>

Thanks.

Re: ASP.NET ValidationSummary - Repost

Richard MacCutchan27-Jul-12 21:34

Richard MacCutchan

27-Jul-12 21:34

You already posted this in the ASP.NET forum; please do not multi-post the same issue.

One of these days I'm going to think of a really clever signature.

Fail Uppercase?

Midnight Ahri27-Jul-12 17:32

Midnight Ahri

27-Jul-12 17:32

i put this code in textbox_textchanged and textbox_editvaluechanged, both didn't work.
yes i'm new in C#, but i think this is so simple.
is this a problem in threading

string uppercase = this.txtLicense.Text.ToUpper();
this.txtLicense.Text = uppercase;

i'm not sure i need to create a new thread just to force a textbox uppercase. D'Oh! | :doh:

Re: Fail Uppercase?

Wes Aday27-Jul-12 17:43

Wes Aday

27-Jul-12 17:43

Midnight Ahri wrote:
is this a problem in threading

No it is not a problem with threading unless you did not reveal all of the information.

Midnight Ahri wrote:
both didn't work

"didn't work" does not tell us anything about the problem that you are having. You should know this by now.

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012

modified 27-Jul-12 23:52pm.

Re: Fail Uppercase?

AmitGajjar27-Jul-12 17:46

AmitGajjar

27-Jul-12 17:46

You need to use LostFocus event to do the same.

Thanks
-Amit Gajjar (MinterProject)

modified 28-Jul-12 0:16am.

Re: Fail Uppercase?

Midnight Ahri27-Jul-12 18:04

Midnight Ahri

27-Jul-12 18:04

well, thank you very much for trying.
i realize it's not that hard to answer this,
character casing properties fix my problem. $Shucks | :-\$

modify :
"i'm not sure i need to create a new thread just to force a textbox uppercase."
thank you for the reply, but i'm sure you understand it.
don't worry, next time i will write it more detail.

modified 28-Jul-12 0:13am.

Re: Fail Uppercase?

Eddy Vluggen28-Jul-12 7:36

Eddy Vluggen

28-Jul-12 7:36

Midnight Ahri wrote:
this.txtLicense.Text = uppercase;

What does this line do, besides the obvious things? Well, it sets the value of a textbox.

..which means that the value has changed. If the value changes, the Framework will trigger the "textbox_textchanged" event. So, we execute that code - which tells us to change the value again. (See a pattern?)

Bastard Programmer from Hell Suspicious | :suss:

if you can't read my code, try converting it here[^]

Re: Fail Uppercase?

BobJanova29-Jul-12 23:02

BobJanova

29-Jul-12 23:02

After the second bounce the value will not change so the event shouldn't fire forever.

Re: Fail Uppercase?

Eddy Vluggen30-Jul-12 0:11

Eddy Vluggen

30-Jul-12 0:11

Does the setter of the text-property of the textbox include a check to see whether the value is the same, or not?

Bastard Programmer from Hell Suspicious | :suss:

if you can't read my code, try converting it here[^]

Re: Fail Uppercase?

BobJanova30-Jul-12 0:46

BobJanova

30-Jul-12 0:46

It should, at least for the TextChanged event (the clue's in the name!), but I haven't actually tested it right now.

Re: Fail Uppercase?

Eddy Vluggen30-Jul-12 2:13

Eddy Vluggen

30-Jul-12 2:13

BobJanova wrote:
It should, at least for the TextChanged event (the clue's in the name!)

The times that I programmed against a intID where the clue in the name was erroneous..

You are right, I decompiled the TextBox, which points to TextBoxBase, which has this in the setter implementation;

this.has_been_focused = false;
if (value == this.Text)
{
    return;
}

(Śtill untested)

Bastard Programmer from Hell Suspicious | :suss:

if you can't read my code, try converting it here[^]

Re: Fail Uppercase?

BobJanova29-Jul-12 23:03

BobJanova

29-Jul-12 23:03

Is this a desktop or web app?

Re: Fail Uppercase?

Rob Philpott30-Jul-12 5:31

Rob Philpott

30-Jul-12 5:31

Probably a bit late now, but the normal way to do this is to intercept the character before it makes it into textbox rather than trying to alter it once its there.

To do this, you want to intercept the WM_CHAR message (either by hooking the event KeyPress at form level of overriding a virtual OnKeyPress(Or similiar?) in a class deriving from TextBox. Then check the character and if its in the range a-z alter it to be A-Z (By subtracting 32 simplest way if ASCII).

edit: That is of course assuming this is Winforms, an assumption I may have jumped on too soon as Bob mentions above.

Regards,
Rob Philpott.

Using Thread is not successful

taibc27-Jul-12 16:08

taibc

27-Jul-12 16:08

Hi Friends,

I am trying to create a new thread to make the picturebox is visible (to show Loading icon) when the ConvertFiles method is running, but it is not successful (Please see below codes)

Do you know what's wrong ?

private void ShowLoadingIcon()
        {
            if (InvokeRequired)
            {
               this.Invoke (new MethodInvoker( ShowLoadingIcon));

            }
            else
            {
                pixLoadingIcon.Visible = true;
            }
        }
private void btnConvert_Click(object sender, EventArgs e)
        {
            
                Thread thLoading = new Thread(ShowLoadingIcon);
                thLoading.Start();
                // This method will take a few minutes
                ConvertFiles(sourceFile, destinationFile);
        }

Thanks and regards,

Re: Using Thread is not successful

Wes Aday27-Jul-12 16:32

Wes Aday

27-Jul-12 16:32

taibc wrote:
but it is not successful

What does this mean? The thread does not start? The thread starts but does not do anything? The code runs and your cat died? "it's not successful" does not tell us anything about what your problem is. Did you run it through a debugger? What did you discover?

Re: Using Thread is not successful

Trak4Net27-Jul-12 17:46

Trak4Net

27-Jul-12 17:46

I think you are doing this backwards. The invoke back to the UI thread will be blocked until your long processing task is finished.

You should actually be trying to do something like this

string sourceFile, destinationFile;

       private void ShowLoadingIcon()
       {
           if (InvokeRequired)
           {
               this.Invoke(new MethodInvoker(ShowLoadingIcon));

           }
           else
           {
               pixLoadingIcon.Visible = true;
           }
       }



       private void btnConvert_Click(object sender, EventArgs e)
       {
           ShowLoadingIcon();

           //start thread to process long running task
           System.Threading.Thread t = new System.Threading.Thread(() =>
           {
               ConvertFiles(sourceFile, destinationFile);
           });

           t.Start();

       }


       private void ConvertFiles(string src, string dest)
       {
           //long running task to convert files
       }

Re: Using Thread is not successful

taibc27-Jul-12 20:21

taibc

27-Jul-12 20:21

Great ! It is successful now.

Thanks Trak4Net very much. Thumbs Up | :thumbsup:

Re: Using Thread is not successful

taibc6-Aug-12 18:21

taibc

6-Aug-12 18:21

Hi Trak4Net,

When running the new thread, I got the bellow error:

"{Text = '((System.Windows.Forms.TextBox)(txtLopDiaChi)).Text' threw an exception of type 'Microsoft.VisualStudio.Debugger.Runtime.CrossThreadMessagingException'} System.Windows.Forms.TextBox
"

Do you know how to fix it ?

Thanks and regards,

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.