Re: javascript alert function breaks with linefeed character - ASP.NET Discussion Boards

passing parameter using postbackURL property...

Naif_Prof13-Oct-06 12:06

13-Oct-06 12:06

Dears
I’m using VS2005 , if we use postbackURL property button or link button it will pass all controls values in page (form method and encrypted ) to second page and we can get the values in second page by using Request.form[“ControlName”]

Now , I need same way to pass the variables values in code behind of page1 to page2 by using postbackURL

Can any one explain how I can write do it

thanks a lot

-- modified at 8:53 Monday 16th October, 2006

Re: postbackURL property..... [modified]

Jay_se13-Oct-06 19:01

Jay_se

13-Oct-06 19:01

Hi,

For ex, in Source's (Source.aspx) CodeBehind (C#),

string val_a="abc";<br />
string val_b="def";<br />
<br />
LinkButton.PostBackURL="Target.aspx?a=" + val_a + "&b=" + val_b;

You can get the values in Target page(Target.aspx.cs) using,

string a = Request.QueryString["a"].ToString();<br />
 string b= Request.QueryString["b"].ToString();

Also You may use PreviousPage property of ASP.NET 2.0

The following could be added to Target.aspx:

<%@ PreviousPageType VirtualPath="~/Source.aspx"  %><br />
<br />
TextBox nameBox = PreviousPage.NameBox;

Here,NameBox is the TextBox control in the Source Page.

-- modified at 3:31 Monday 16th October, 2006

Regards,

Jay Smile | :)

ReportViewer Issue

Christopher Stratmann13-Oct-06 9:13

Christopher Stratmann

13-Oct-06 9:13

The main issue is the "Select a Format" and "Size" dropdown boxes on the ReportViewer. Those controls seem to always have the highest z-order and I cannot show anything ontop of them....

- What I am trying to show ontop of them...
I cannot seem to place a <div> using absolute positioning with a table inside the <div> tags on top of those combo boxes...

- Why Would I want to do such a thing...
I am using Microsoft Visual Studio 2005 ASP.Net 2.0, ReportViewer with rendering LocalReports that show RDL Files. Showing the RDL files are working just fine with the ReportViewer but I want to have prompt options like SQL Server Reporting Service. I also have this working pretty good also.

- So Whats The Problem Again....
I searched the web for a combobox with check buttons like SQL Server Reporting services multivalue option and was unable to find one, so I made my own custom control that does nearly the same thing. My drop down is a <div> tag with a table with checkboxes. When I tell my <div> to have visibility eqaul to "visible" it show the drop down correctly on top of everyting on the page but always under the ReportViewer Comboboxes.

I have tried setting the z-order to 999999 on my <div> tag, <table> tag, and <input> tags and it is still under the report viewer comboboxes.

Please Help....

Chris

Re: ReportViewer Issue

Andy Brummer13-Oct-06 10:22

Andy Brummer

13-Oct-06 10:22

In IE the combo box is rendered using the windows control and ignores z-order. Most menu scripts and the like find the combox box controls and hide them while they are over where the controls should be.

Using the GridView is like trying to explain to someone else how to move a third person's hands in order to tie your shoelaces for you.
-Chris Maunder

javascript alert function breaks with linefeed character

#realJSOP13-Oct-06 9:00

#realJSOP

13-Oct-06 9:00

I have a aps.net website where I'm trying to show an alert via javascript.

I'm setting a string variable to the following in the code-behind:

m_strAssemblyMisMatch  = "<script language=\"javascript\">alert(\"" +
                         "This website may not function as expected due to assembly version \n" +
             "mis-matches that were detected during application initialization.  The \n" +
             "following mis-matches were found:\n\n" +
             strBadAss +
                     "\nPlease login and notify a support representative." +
                     "\");</script>";

The strBadAss variable contains text like

"\tAssemblyNameOne\n\tAssemblyNameTwo\n\tAssemblyNameThree\n"

.

I'm rendering this string in the aspx page with the following statement:

<%=m_strAssemblyMisMatch%>

If I leave the linefeed characters in the string, I get a javascript error claiming there's an un-terminated string constant, and the alert dialog is NOT displayed. If I remove all of the linefeeds, the alert dialog IS displayed (with everything on one line of course).

In an attempt to see if there was indeed an un-terminated string, I tried the following:

m_strAssemblyMisMatch  = "<script language=\"javascript\">alert(\"" +
                         "This website may not function as expected due to assembly version \n" +
                     "\");</script>";

Once again, if I left the linefeed in the string, it wouldn't work, but if I removed the linefeed character, it was fine.

Can anyone tell me what I'm doing wrong?

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: javascript alert function breaks with linefeed character

Shog⁹13-Oct-06 9:23

Shog⁹

13-Oct-06 9:23

Just a guess - the newline escapes are being turned into actual newlines by the C# compiler, so by the time they make it onto the page, you now have a string spanning multiple lines (which JS doesn't like). Try double escaping the newlines (\\n).

every night, i kneel at the foot of my bed and thank the Great Overseeing Politicians for protecting my freedoms by reducing their number, as if they were deer in a state park. -- C^hris L^osinger, Online Poker Players?

Re: javascript alert function breaks with linefeed character

#realJSOP13-Oct-06 9:43

#realJSOP

13-Oct-06 9:43

Yeah - figured that out and came here to update my message. I hate C#.

Re: javascript alert function breaks with linefeed character

Rama Krishna Vavilala13-Oct-06 9:25

Rama Krishna Vavilala

13-Oct-06 9:25

You have to Quote the JavaScript string to make it work. As \n gets converted to a new line.

Look at the implementation of System.Web.UI.Util.QuoteJScriptString(String, Boolean) using Reflector.

Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan

Re: javascript alert function breaks with linefeed character

#realJSOP13-Oct-06 9:44

#realJSOP

13-Oct-06 9:44

Wrong answer, but thanks for responding. I had to double-backslash the linefeed character to fix it.

Re: javascript alert function breaks with linefeed character

Rama Krishna Vavilala13-Oct-06 9:47

Rama Krishna Vavilala

13-Oct-06 9:47

John Simmons / outlaw programmer wrote:
I had to double-backslash the linefeed

That is what I call Quoting. The System.Web.UI.Util.QuoteJScriptString(String, Boolean) is a general purpose function that converts everything like tab characters and special unicode characters to JS friendly form.

Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -Brian Kernighan

Re: javascript alert function breaks with linefeed character

Guffa13-Oct-06 16:28

Guffa

13-Oct-06 16:28

This is often known as escaping, which comes from the use of the escape character (0x1b) in environments like DOS and with matrix printers.

Also the term encoding is sometimes used, as in the HtmlEncode and UrlEncode methods.

---
b { font-weight: normal; }

Sending Audio content from ASPX page.

hectorpc200613-Oct-06 8:34

hectorpc2006

13-Oct-06 8:34

On Button Postback an Aspx Page runs the following onclick C# event handler:

{
// dr[“Content”] - DataRow Item type byte[] where is a song in mp3 format
ar = dr[“Content”];
Response.ContentType=“audio/mpeg”;
Response.Clear();
Response.BufferOutput = true;
Response.BinaryWrite(ar);
Response.Flush();
}

I received error in Response.Flush() – The remote host closed the connection.(HttpException).

Please help me,

Thanks

hector

Re: Sending Audio content from ASPX page.

WillemM13-Oct-06 9:12

WillemM

13-Oct-06 9:12

I think you forgot the specify the length of your response. This should be equal to the size of the audio file you are sending to the client. Now the connection gets closed in the middle of the operation, because the client thinks he's done downloading the data and there's nothing left.

WM.

What about weapons of mass-construction?

Re: Sending Audio content from ASPX page.

hectorpc200613-Oct-06 10:12

hectorpc2006

13-Oct-06 10:12

How can I set StreamOutput Lentgth ?, I think “al.length” was taken for “Response.Binary(al)” but maybe not. In debugger Response.OutputStream.Length is showing a SystemNotSupportedException.
Also “Response.OutputStream.Length” is readonly

Re: Sending Audio content from ASPX page.

WillemM13-Oct-06 21:22

WillemM

13-Oct-06 21:22

After searching on google, I found this article that might be of help.
http://support.microsoft.com/kb/306654[^]

WM.

What about weapons of mass-construction?

Display data as table in Crystal Report

bins8813-Oct-06 8:03

bins88

13-Oct-06 8:03

Can anybody help to display data as table using crystal report from an asp.net page

Thanks

Re: Grid view paging error

WillemM13-Oct-06 9:14

WillemM

13-Oct-06 9:14

Hello,

What datasource are you using for the grid? If you use a dataset paging should be supported, I'm unsure of the other sources, it sounds totally logical that IEnumerable sources don't support this kind of functionality.

WM.

What about weapons of mass-construction?

sql delete statement error in asp page

keroed_edmond13-Oct-06 6:29

keroed_edmond

13-Oct-06 6:29

code snippet

dim sCode,sName
dim oCmd, sSqlString
dim oNewConnection, oNewRecordset, sNewSQL

sCode=replace(request.Form("txtCode"),"'","''")
sName=replace(request.Form("txtName"),"'","''")

sSqlString2 ="DELETE * FROM tblcode WHERE (code = " & sCode & " AND codeOwner= '" & sName &"')"
Set oNewConnection = Server.CreateObject("ADODB.Connection")
'open the connection to the database
oNewConnection.Open(sConnString2)
oNewConnection.execute(sSqlString2)

but when i try to excute that i get the following error

Microsoft OLE DB Provider for SQL Server error '80040e14'

Line 1: Incorrect syntax near '*'.

kenny

Re: sql delete statement error in asp page

Guffa13-Oct-06 7:14

Guffa

13-Oct-06 7:14

1. Remove the * in the query. You are deleting records, not specific fields of records.

2. You have forgotten the apostrophes around the value you are comparing to the code field.

---
b { font-weight: normal; }

Re: sql delete statement error in asp page

keroed_edmond13-Oct-06 12:36

keroed_edmond

13-Oct-06 12:36

thanks made the changes and it worked, i didn't need to put the apostrophes around the values though

Re: sql delete statement error in asp page

Guffa13-Oct-06 15:34

Guffa

13-Oct-06 15:34

keroed_edmond wrote:
i didn't need to put the apostrophes around the values though

Are you sure? You are escaping the apostrophes in the value, is that something that you just do without knowing why, or can the value actually contain apostrophes? If it can, then you need to put apostrophes around the value.

---
b { font-weight: normal; }

Upload large files

felopater13-Oct-06 5:28

felopater

13-Oct-06 5:28

hi all,
when i try to upload large files (file length is bigger then maxRequestLength i recive error page(this page can't be displayed dns error) all i want to make is to find a way to display error page instead of this default error page.
i tried to use custom error page but it doesn't work.
does any one has idea?
Thanks in advance.

marcoryos

Re: Upload large files

Sreenath Madyastha13-Oct-06 9:16

Sreenath Madyastha

13-Oct-06 9:16

Can't you check ContentLength property of input file ? I am guessing you should get this properrty before you upload ?

Else it is always a good idea to make use of page_error or Application_Error event to catch unknown errors.

Re: Upload large files

WillemM13-Oct-06 9:19

WillemM

13-Oct-06 9:19

Hmm, I think it would be even better to validate the size before even trying to upload the file. You can do this by adding a custom validator that checks the size of the file the user choose to upload with the maximum allowed size.

This provides the user with a more friendly way of saying: No, you can't upload this.

WM.

What about weapons of mass-construction?

Re: Upload large files

Sushant Duggal13-Oct-06 18:59

Sushant Duggal

13-Oct-06 18:59

Hi,

Maximum upload size for a file is mentioned in machine.config
you can override the settings by mentining it in your project web.config

<httpRuntime executionTimeout="3600" maxRequestLength="100000"/>

Regards,

Sushant Duggal.

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