Develop Reference

Some elements of control not recognized by C# compiler

I have a site that is using the aspdotnetstorefront platform, although this should pertain to any C# site. There is a custom control in a dll named Account. This has several elements including text boxes for customers to enter name, phone number etc.
I have checked the source code with DotPeek and verified I am using the correct naming conventions.
I am attempting to use the javascript onChange event to copy the first name, last name and phone number to lower boxes when a check box (account information same as billing) is checked. So that if customers select that the information is the same it will be automatically copied as they move from one box to the next.
The odd thing is, this works with some of the text boxes but not others. To make things simple I have removed the JS that copies the contents and replaced it with a pop up box for testing.
This works, when I change the text I get a "Hello World" pop up box:
ctrlAccount.txtFirstName.Attributes.Add("onchange", "alert('hello,world')");
But this does not:
ctrlAccount.txtPhone.Attributes.Add("onchange", "alert('hello,world')");
The error I get is:
CS1061: 'AspDotNetStorefrontControls.Account' does not contain a definition for 'txtPhone' and no extension method 'txtPhone'
accepting a first argument of type
'AspDotNetStorefrontControls.Account' could be found
So it looks like the compiler cannot recognize the phone text box. When I look at the rendered page code (When the error has been removed of course) the box is there and the ID is correct.
Reading the source code with DotPeek I see:
public Account()
{
this._txtFirstName = new TextBox();
this._txtLastName = new TextBox();
this._txtEmail = new TextBox();
this._txtPassword = new TextBox();
this._txtPasswordConfirm = new TextBox();
this._txtPhone = new TextBox();
}
private void AssignClientReferenceID()
{
this._txtFirstName.ID = "txtFirstName";
this._txtLastName.ID = "txtLastName";
this._txtEmail.ID = "txtEmail";
this._txtPassword.ID = "txtPassword";
this._txtPasswordConfirm.ID = "txtPasswordConfirm";
this._txtPhone.ID = "txtPhone";
}
(I've removed a bunch of other fields in the interest of readability). But that certainly looks to me like text box for the phone number should have the idea of "txtPhone" and "txtFirstName" and "txtLastName" work just fine, so why would this fail on only the Phone box?

The code you've added to the question show only assignment of IDs and nothing else. I can't see the entire source code of Account control but usually fields with leading underscore are protected or private and, to expose these fields, public properties are used so please check if it's present a public property named txtPhone.
EDIT
ctrlAccount.txtFirstName.Attributes.Add("onchange", "alert('hello,world')");
ctrlAccount.txtPhone.Attributes.Add("onchange", "alert('hello,world')");
Try to press F12 with the caret over txtFirstName or txtPhone on the lines above to see where these property are defined.
P.S.:
Do not confuse the names of id and public properties of a class

It's VS bug, simple restart should help you.

Right-click the txtFirstName part and choose "Go to definition". Ensure that the txtPhone property is defined nearby and is accessible.

If you open your project on visual studio, you can right click on txtPhone or txtFirstName and click on "Go to definition". It will take you to the place where it is defined. Maybe txtFirstName is being read from somewhere else where txtPhone does't exist.
I get these kind of warning(not an error) on my application sometimes in compiler however on run time, it recognise the definition and no problem is caused.

IHTMLDocument2 Printing without Dialog Box

I've been working on a project that automatically prints HTML invoices. It's been particularly challenging as I've needed to keep the CSS formatting.
Following advice, I've found myself using IHTMLDocument2 to carry out my printing. I'm supposed to be able to:
mshtml.IHTMLDocument2 doc = new mshtml.HTMLDocument() as mshtml.IHTMLDocument2;
doc.write(htmlContent); //htmlContent is a string of HTML
doc.execCommand("PRINT", false, null);
The second argument specifies whether to produce the Printer Options box, but it doesn't help. I've read that using PRINT will always result in a dialog box - however I haven't been able to find an alternative.
Any ideas?

According MSDN:
Print
Opens the print dialog box so the user can print the current page.
So I think there is no way to workaround this behaviour. Try to use other classes for your application or open the print dialog box during printing.
You should note that you must provide true as secord parameter (showUI [in, optional]) in execCommand method.

Open a new window using MapAreaAttributes in microsoft chart control

i am using MS asp.net 3.5 chart control (Pyramid) and on the click of the series/datapoint i need to open a URL in a new window, something like javascript window.open.
Now i have tried a hell lot but that doesn't work. I am not able to give javascript to the datapoint.
Secondly i got to know that MapAreaAttributes could be given to Series as mentioned below if a new window needs to be open
series.MapAreaAttributes= "target='_blank'";
But even this doesn't works????
Guide me! Thanks

I had your same problem just now.
Here is the solutions and it works:
Notice in your code that you're using the single quotation ('). It seems that this is not allowed by the chart control or something. Let me give you an example that might help you understand:
Let's assume you have a JavaScript function that opens a window showing some data when the user clicks on a column (point) in your data (series). You can do it like this:
Chart1.Series["MySeries"].Points[0].Url = "javascript:void(0)"; //this is just to tell the browser not follow a URL, since you will control this with your javascript
Chart1.Series["MySeries"].Points[0].MapAreaAttributes = "onclick=\"OpenWindow();\""; //this is to set the onclick attribute to fire your javascript function when the user clicks your column.
In the above example in the second line of code, notice that I have used double quotation instead of single ones. If you wrote it like this :
"onclick=\'OpenWindow();\'";
it will never work! You have to use double quotations...
Also, since I am a C# developer, you have to use the \" code to write double quotations otherwise, you will get compiler error.
I hope this helps!

Retrieve Selected Text from a Web Browser Control in a

Here's what I am trying to do:
Select text from a webpage I pulled up using my web browser control.After clicking a button while this text is still selected I would like a message box to pop-up displaying the text that was highlighted by the user. How do I get this functionality to work in my wpf application?
I think I'm on the right track using mshtml but I get an error that says:
Error HRESULT E_FAIL has been returned from a call to a COM component.
This error will happen even when I try something small on the document like changing the title.
The code is below:
IHTMLDocument2 doc = (IHTMLDocument2)this.webBookText.Document;
doc.title = "l";

Well, for starters it would be a lot simpler to use WebBrowser than mshtml (note that you can still host WebBrowser in WPF) - this will certainly let you do simple things a lot easier:
webBook.Document.Title = "foo";
However, I can't see anything there that would let you work with selections very easily...
You can get the selected element with .Document.ActiveElement, but this is the entire element - not the selected portion.

Figured it out that error was because this wasn't in my form class

How do I insert text into a textbox after popping up another window to request information?

I have an asp.net web page written in C#.
Using some javascript I popup another .aspx page which has a few controls that are filled in and from which I create a small snippet of text.
When the user clicks OK on that dialog box I want to insert that piece of text into a textbox on the page that initial "popped up" the dialog/popup page.
I'm guessing that this will involve javascript which is not a strong point of mine.
How do I do this?

You will have to do something like:
parent.opener.document.getElemenyById('ParentTextBox').value = "New Text";

What you could do is create an ajax modal pop-up instead of a new window. The semantic and aesthetic value is greater not to mention the data-passing is much easier.
http://www.asp.net/ajax/ajaxcontroltoolkit/samples/modalpopup/modalpopup.aspx