ASP.NET

Re: dialog box on if condition

30-Mar-10 11:27

Guess the syntax validator addin stopped working. Blush | :O

I know the language. I've read a book. - _Madmatt

ships_agr30-Mar-10 19:08

ships_agr

30-Mar-10 19:08

thanks a lot.

A problem with Textbox and the property .SelectedText

_ASPAle_30-Mar-10 10:15

_ASPAle_

30-Mar-10 10:15

Hi I've a problem with the property .SelectedText.

I've Microsoft Visual Web Developer Express 2008 - Framework version: 3.5.

The problem is that Visual Studio can not find this property, I also checked that there were any dll.

Property. SelectedText is in the System.Windows.Controls namespace right?
I don't know where wrong, please help me!
Here is the msdn page from which I copied the code:
http://msdn.microsoft.com/en-us/library/system.windows.controls.textbox.selectedtext.aspx

Re: A problem with Textbox and the property .SelectedText

Gregory Gadow30-Mar-10 10:28

Gregory Gadow

30-Mar-10 10:28

It would seem that you are confusing two entirely different things. If you are developing for the web, the TextBox you are probably using comes from the namespace System.Web.UI.WebControls. That control does not have a SelectedText property. You should confirm that you are linking in the correct namespace.

Re: A problem with Textbox and the property .SelectedText

_ASPAle_30-Mar-10 13:02

_ASPAle_

30-Mar-10 13:02

I understand, but how do I catch the selected text from an asp:textbox and put it in a string variable?

But on that msdn page I linked, it seems that talk of a web application ... is not very clear!

Thanks for the help!

Re: A problem with Textbox and the property .SelectedText

Gregory Gadow30-Mar-10 19:22

Gregory Gadow

30-Mar-10 19:22

Notice the namespace referenced at the top of the article you linked: System.Windows.Controls. That means it is written using Windows Presentation Foundation (WPF), not ASP.Net. In web browsers, WPF is implemented through Microsoft Starlight, which is basically a subset of WPF merged with AJAX. This lets you preserve user states, such as what the user has selected in a text box. Normal ASP is built on the HTML protocol which is stateless: postbacks are handled by sending a hidden form, which gives the information (text in a textbox) but no metadata (what part of that text is selected.) That is why the standard ASP controls do not have properties like SelectedText.

I don't think you can do what you want to do using ASP. WPF and Silverlight has a lot of very interesting and useful functionality, but there is a bit of a learning curve. You could try posting your question in the Web Development or Silverlight forums, but it might be better to either figure out a different way to get what you want, or buckle down and learn a new programming tool. Unfortunately, I've not had the time to learn it myself, so I'll just shut up now. Wink | ;)

Re: A problem with Textbox and the property .SelectedText

Venkatesh Mookkan31-Mar-10 2:36

Venkatesh Mookkan

31-Mar-10 2:36

You can do that using JavaScript. As far as I know, you cannot do this from CodeBehind.

Castle Rider

What if I freeze??? Don't forget to breath...

My: Website | Yahoo Group | Blog Spot

Populate A Label in Listview From VB Event

MarkPhD30-Mar-10 8:52

MarkPhD

30-Mar-10 8:52

In my Listview InsertItemTemplate I have the following Label:

<asp:label id="IDNOInsertLabel" runat="server">I use the following VB statement (which works on a Formview) to popuate said Label:

CType(lvPTRPhoneCalls.FindControl("IDNOInsertLabel"), Label).Text = lblSelectedIDNO.Text

It gets an "Oject reference not set to an instance of an object" error.

How/when/where can I popuate a Label in a Listview using VB?

Thank you.

Re: Populate A Label in Listview From VB Event

Gregory Gadow30-Mar-10 9:04

Gregory Gadow

30-Mar-10 9:04

I'm not sure where the problem might be, but you can rewrite this a bit to help with the debugging.

VB.NET

Dim Obj As Object = lvPTRPhoneCalls.FindControl("IDNOInsertLabel")
If Obj IsNot Nothing Then
    Dim Lbl As Label = TryCast(Obj, Label)
    If Lbl IsNot Nothing Then
        Lbl.Text = lblSelectedIDNO.Text
    Else
        'Do something to report the error
    End If
Else
    'Do something to report the error
End If

With this, you can see if the control is not being found, or if it is found but is not a label.

Problem with Web Service

Sider8930-Mar-10 7:20

Sider89

30-Mar-10 7:20

When I'm executing project in this function this exception rises

private void callbackDoSomeWorkA(IAsyncResult ar) {
            string retval = sa.EndDoSomeWorkA(ar);// <-- here
            Stack stack = Session["Status"] as Stack;
            stack.Push(retval);
        }

WebException was unhandled by user code - The server committed a protocol violation. Section=ResponseStatusLine

what's the problem? Does enybody know it? Frown | :(

C# Developer

modified on Tuesday, March 30, 2010 2:08 PM

Re: Problem with GridView [modified]

Sandeep Mewara30-Mar-10 7:59

Sandeep Mewara

30-Mar-10 7:59

Google gave me this explaination for the error:
the problem is actually caused by the critical http header parsing/validating
of the HttpWebRequest component. According to the Http
Specification(http1.1), the HTTP header keys shoud specifically not include
any spaces in their names. However, some web servers do not fully respect
standards they're meant to. Applications running on the Dotnet framework
and making heavy use of http requests usually use the httpWebRequest class,
which encapsulates everything a web oriented developer could dream of. With
all the recently issues related to security, the "httpWebRequest" class
provides a self protection mechanism preventing it to accept HTTP answers
which not fully qualify to the specifications.

The common case is having a space in the "content-length" header key. The
server actually returns a "content length" key, which, assuming no spaces
are allowed, is considered as an attack vector (HTTP response split
attack), thus, triggering a "HTTP protocol violation error" exception.

Setting this would help:

<configuration>
  <system.net>
   <settings>
      <httpWebRequest useUnsafeHeaderParsing="true" />
   </settings>
  </system.net>
</configuration>

Detailed link by Microsoft support[^]

UPDATE: Also look at this link... this too involves above config but states some changes in Port!
http://channel9.msdn.com/forums/TechOff/257803-HttpWebRequestResponse-The-server-committed-a-protocol-violation-SectionResponseStatusLine/[^]

modified on Tuesday, March 30, 2010 1:10 PM

Re: Problem with GridView

Sider8930-Mar-10 9:11

Sider89

30-Mar-10 9:11

I've done like this...
but is is same error Frown | :(

C# Developer

Insert Into Listview Label

MarkPhD30-Mar-10 7:13

MarkPhD

30-Mar-10 7:13

In my Listview I have the following Label in the <inserrtitemtemplate>

Re: Insert Into Listview Label

Sandeep Mewara30-Mar-10 8:05

Sandeep Mewara

30-Mar-10 8:05

Can you please edit and make the formatting correct. Its hard to read right now!

MarkPhD wrote:
"Object reference not set to an instance of an object" error.

Based on this, it means that there is some problem at this line of yours:
CType(lvPTRPhoneCalls.FindControl("IDNOInsertLabel"), Label).Text

For now, looks like a bracket missing.... try this:
(CType(lvPTRPhoneCalls.FindControl("IDNOInsertLabel"), Label)).Text

P.S.: Assuming the control exists in 'lvPTRPhoneCalls'... thus CType(lvPTRPhoneCalls.FindControl("IDNOInsertLabel"), Label) is not null!

QueyString problem in IE6

Abbas_here30-Mar-10 6:05

Abbas_here

30-Mar-10 6:05

Hi Friends..

I am using Asp.Net c# one of my project, there i am using QueryString to pass value from one page to another page as (www.xyz.com?a=old#10),

value=Request.QueryString["prd"]

the problem is that IE6 taken value=old#10 where is all browser taken value=old kindly help me i need only old .

Not Active30-Mar-10 6:21

30-Mar-10 6:21

Have you tried to encode the url

Server.URLEncode('www.xyz.com?a=old#10");

I know the language. I've read a book. - _Madmatt

Abbas_here30-Mar-10 6:34

Abbas_here

30-Mar-10 6:34

Solve by string.replace(IndexOf)

Not Active30-Mar-10 7:02

30-Mar-10 7:02

How did this solve your issue?

I know the language. I've read a book. - _Madmatt

stop page reloading in asp.net

Rutvik Dave30-Mar-10 9:38

Rutvik Dave

30-Mar-10 9:38

I think he did substring from the start to the index of '#' sign... D'Oh! | :doh:

... otherwise we need to learn the programming again... Smile | :)

vikas shukla30-Mar-10 3:30

vikas shukla

30-Mar-10 3:30

hi sir,

i am new in asp.net.sir i want to know that is there any java script with the help of which we can stop page reloading at the time of using ajax control.and dropdown text selection.

sir i know that update panel can do this.but sir i do not want to use update panel.i mean i want to stop my page reload without using update panel while i am using ajax.

please help me sir i am posting my this question again.
because first time i did not get any response.

Not Active30-Mar-10 5:37

30-Mar-10 5:37

Ajax is an out of band technology that does not require your page to reload. There are many, many examples for Ajax here and elsewhere.

One thing to make sure to do is set AutoPostback to false on your dropdownlist so it does not postback

I know the language. I've read a book. - _Madmatt

T M Gray30-Mar-10 7:19

T M Gray

30-Mar-10 7:19

Do you have a reason you don't want to use an update panel?

Your question is like asking about getting a nail into a piece of wood but refusing to use a hammer. When you make silly restrictions with no reasons behind them you are less likely to get help because you might dismiss other good solutions for no apparant reason as well.

Not Active30-Mar-10 7:44

30-Mar-10 7:44

I would disagree. There are plenty of good reasons to not use an UpdatePanel. Refreshing a portion of a page does not require one to be used and it does add extra overhead that may not be necessary.

I know the language. I've read a book. - _Madmatt