Re: pass value from sub form to parent form - C# Discussion Boards

Re: Show proccess window

Scalee22-Nov-07 12:00

Scalee

22-Nov-07 12:00

Thanks!
Works perfectly!

textbox(es)

Assaf8221-Nov-07 9:48

Assaf82

21-Nov-07 9:48

Hello
I have a form where there is plenty of textbox after sving the data
I want to empty all these textbox.
how I can do that by foreach statment

or if any one have another idea, will be greatly appreciated
instead of empty each one alone

thanks in advance

Assaf

Re: textbox(es)

J$21-Nov-07 9:58

21-Nov-07 9:58

In your form you could do something like:

foreach (Control control in this.Controls)
{
    if (control is TextBox)
       control.Text = string.Empty;
}

Re: textbox(es)

Giorgi Dalakishvili21-Nov-07 10:04

Giorgi Dalakishvili

21-Nov-07 10:04

<br />
foreach (Control c in this.controls)<br />
{<br />
    if (c is TextBox)<br />
        c.Text="";<br />
}<br />

#region signature
my articles
#endregion

Re: textbox(es)

Anthony Mushrow21-Nov-07 10:12

Anthony Mushrow

21-Nov-07 10:12

foreach (Control c in this.Controls)
{
    if (c is TextBox)
    c.Text = new string('0', 0);
}

Sorry

My current favourite word is: PIE!

Good ol' pie, it's been a while.

pass value from sub form to parent form

madEG21-Nov-07 8:32

madEG

21-Nov-07 8:32

Sigh. I feel like such a newb.

Ok, as the subject suggests I have a parent form that passes two values to a sub form. I want to edit the values on the sub form, and pass these updated values back to the parent form.

I can get the values to the sub form, but not back to the parent form... I just can't figure out how to make this happen. I get two errors:

Error 1 An object reference is required for the nonstatic field, method, or property 'WindowsApplication7.Form2.stAptUnitNum'

Error 2 An object reference is required for the nonstatic field, method, or property 'WindowsApplication7.Form2.stAddress'

I presume this means I am a rookie, er, I mean that I am doing something fundementally wrong, because to be honest even after googling this problem for over an hour I can't find an explanation that I understand. I thought making the two variables public on form2 would allow me to get their value when back to form1, but perhaps not.

On the main form:

<br />
private void fxn_reevaluate()<br />
        {<br />
            // check text box address1 and address2 for length and continue on submit<br />
            Form2 frm = new Form2(stAptUnitNum, stAddress);<br />
            frm.ShowDialog();<br />
            stAptUnitNum = Form2.stAptUnitNum;  // error1 here...<br />
            stAddress = Form2.stAddress;   // error2 here...<br />
        }

which then calls the sub form...

<br />
public Form2(string Address1, string Address2)<br />
        {<br />
            InitializeComponent();<br />
            textBoxAddr1.Text = Address1;<br />
            textBoxAddr2.Text = Address2;<br />
        }<br />
<br />
public string stAptUnitNum;<br />
public string stAddress;<br />
<br />
private void btnSubmit_Click(object sender, EventArgs e)<br />
        {<br />
                // set the variables to be picked up by the parent form after the window closes.<br />
                stAptUnitNum = textBoxAddr1.Text.Trim();<br />
                stAddress = textBoxAddr2.Text.Trim();<br />
                this.Close();<br />
        }<br />

Any help would be greatly appreciated.

Thanks!
-Matt G.

Re: pass value from sub form to parent form

Kristian Sixhøj21-Nov-07 8:37

Kristian Sixhøj

21-Nov-07 8:37

Perhaps this article could help you:

http://www.codeproject.com/dotnet/passingvaluesbetweenforms.asp[^]

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

Re: pass value from sub form to parent form

madEG21-Nov-07 8:47

madEG

21-Nov-07 8:47

You know, I really did read this article, and unless I am overlooking something, or failing to infer something, all I see here is pass value from parent to child (which I thankfully have working), update child from parent when child form is open (cool, but I am not there yet...) and passing values from children to child (sibling to sibling).

Am I overlooking something that shows how to get a value back from a child to the parent?

Thanks!
-Matt G.

[edited for spelling...]

Re: pass value from sub form to parent form

Kristian Sixhøj21-Nov-07 8:58

Kristian Sixhøj

21-Nov-07 8:58

Yes, read the 'Sibling to Sibling' chapter.
"... This also demonstrates passing between the child and the parent."

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

Re: pass value from sub form to parent form

madEG21-Nov-07 9:05

madEG

21-Nov-07 9:05

Oh geez. Clearly I need to take a breath and read more slowly...

Thanks!

Re: pass value from sub form to parent form

Kristian Sixhøj21-Nov-07 9:07

Kristian Sixhøj

21-Nov-07 9:07

madEG wrote:
Clearly I need to take a breath and read more slowly...

I know what you mean Big Grin | :-D

Kristian Sixhoej

"Failure is not an option" - Gene Kranz

Re: pass value from sub form to parent form

Skippums21-Nov-07 9:05

Skippums

21-Nov-07 9:05

You didn't declare the properties "stAptUnitNum" and "stAddress" as static. You must call them from the instance, like

frm.stAptUnitNum
frm.stAddress

instead of calling them on the class, like

Form2.stAptUnitNum
Form2.stAddress

Hope this helps.

Jeff

Re: pass value from sub form to parent form

DaveyM6921-Nov-07 9:19

DaveyM69

21-Nov-07 9:19

I find the easiest way to do this is to change the subform's constructor and pass the control or variable or even the parent form in that.

Re: pass value from sub form to parent form

Anthony Mushrow21-Nov-07 10:06

Anthony Mushrow

21-Nov-07 10:06

There would be no need to pass public variables or the parent form through the constructor, since the child form has access through this.Parent

My current favourite word is: PIE!

Good ol' pie, it's been a while.

How to check/compare type of font used in txt/rtf

shea85121-Nov-07 8:16

shea851

21-Nov-07 8:16

Hi. I'm having trouble using streamwriter on certain files because those files contain chinese characters. I can fix my problem, but only in a way that it'll work correctly for one or the other, but not both at the same time.

The main issue is that I need to write to files that do not contain chinese, and files that do contain chinese. These files are mixed together, and at times there can be 500+ files. The only way to tell them apart that I can think of is to check if the file uses a certain font.

The files that contain chinese characters display them using the SimSun font. The files that do not have chinese characters do not use the SimSun font.

How can I check a file to see if it uses a certain type of font? I just need pointed in the right direction. I've tried messing around with iTextSharp but it doesn't seem to be able to read files, just write to them.

Re: How to check/compare type of font used in txt/rtf

Anthony Mushrow21-Nov-07 8:25

Anthony Mushrow

21-Nov-07 8:25

Can't you check the encoding that the text file uses?
For example, Unicode(UTF-8) or Greek (ISO) or Arabic (DOS).

Or is the encoding all the same, and its just the font that provides the chinese characters?

My current favourite word is: PIE!

Good ol' pie, it's been a while.

Re: How to check/compare type of font used in txt/rtf

shea85121-Nov-07 8:31

shea851

21-Nov-07 8:31

I don't know how if it's possible.

All I could find on that was "EncodingInfo GetEncodings" or something, which I tried on a file containing chinese and a file that had just 1 character of english. They both returned about 30 codepages... all of which were exactly the same.

*shrug*

How can I catch the Mouse Click?

Khoramdin21-Nov-07 7:56

Khoramdin

21-Nov-07 7:56

Hello everyone,

I have created a BHO using C#. The code works fine. I would like to detect mouse click on a particular bytton. The following is the SiteSet().

    public class BHO : IObjectWithSite<br />
    {<br />
        private SHDocVw.WebBrowser webBrowser;<br />
        private mshtml.HTMLDocument document;<br />
        private mshtml.IHTMLDocument2 document2;<br />
        private mshtml.HTMLElementEvents_Event events;<br />
<br />
public int SetSite(object site)<br />
        {<br />
            if (site != null)<br />
            {<br />
                webBrowser = (SHDocVw.WebBrowser)site;<br />
                webBrowser.DocumentComplete += new SHDocVw.DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);<br />
                webBrowser.BeforeNavigate2 += new SHDocVw.DWebBrowserEvents2_BeforeNavigate2EventHandler(this.OnBeforeNavigate2);<br />
<br />
                webBrowser.OnQuit += new SHDocVw.DWebBrowserEvents2_OnQuitEventHandler(this.OnQuit);<br />
                webBrowser.NavigateComplete2 += new SHDocVw.DWebBrowserEvents2_NavigateComplete2EventHandler(this.NavigateComplete2);                       <br />
<br />
                events.onclick += new mshtml.HTMLElementEvents_onclickEventHandler(this.OnElementMouseClick);                <br />
<br />
            }

for the OnElementMouseClick function I have the following.

        public bool OnElementMouseClick()<br />
        {<br />
            MessageBox.Show("HelloWorld...");<br />
            return true;<br />
        }<br />
.<br />
.<br />
.<br />
.<br />

But nothing really happens! Am I wrong to think that the above code should give me HelloWorld message once a button is click?

Any information on this would be appriciated. Thank you very much.

Khoramdin

Re: How can I catch the Mouse Click?

Not Active21-Nov-07 8:51

Not Active

21-Nov-07 8:51

http://www.codeproject.com/script/comments/forums.asp?msg=2323846&forumid=1649&mode=all&userid=3018268#xx2323846xx[^]

Khoramdin wrote:
I surly can stop and take my postings and problems to another forum

Guess you didn't do this.

You are persistent, but that won't help when you are so far over your head.

only two letters away from being an asset

Re: How can I catch the Mouse Click?

Khoramdin21-Nov-07 8:56

Khoramdin

21-Nov-07 8:56

Hello,

You should POST the entire message rather than posting one section of it. If I remeber correctly, I said "If my messages bother you so much I surly can stop and take my postings and problems to another forum.". That is if you wish to be fare, mate!

I still stand by my posting as I am not here to upset anyone.

By the way, didn't take your advise and managed to solve the problem. Hey, not all of use get Free MVP title! *wink*

Thank you for the reply.

Khoramdin

Re: How can I catch the Mouse Click?

Not Active21-Nov-07 10:08

Not Active

21-Nov-07 10:08

Khoramdin wrote:
You should POST the entire message

You mean like the like above the reference?

Khoramdin wrote:
By the way, didn't take your advise and managed to solve the problem.

Good for you. It is helpful to others to post the solution. If indeed you have solved it yourself. Perhaps someone with more experience just finished it for you. "wink* Poke tongue | ;-P

only two letters away from being an asset

Re: How can I catch the Mouse Click?

Khoramdin21-Nov-07 12:21

Khoramdin

21-Nov-07 12:21

ha ha ha...

I wish someone had solved it for me, mate! I truly cracked my head on that BHO and believe me when I tell you that I was so excited when it got working!

I cannot deny the fact that I read nearly a milliion posting and articles before I managed to get it up and running.

I am actually thinking of creating a STEP BY STEP and detailed tutorial and submit it to codeproject regarding the BHO. My finding was that, expect one or two articles; there isn't much of information on BHO on Internet.

It is good to see you have a delightful sense of humor. Happy thanx-giving, mate. Rose | [Rose]