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M. J. Jaya Chitra wrote: If the data is valid it has to update the DB else it has to given an alert.
AFAIAK, you can't register client script block from a updatepanel. You can put a label and set the error text there. So if there is any error, user will get the error message in the label than JS alert.
Hope this helps
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Dear Navaneeth,
Thank you for your information.
But I want to get an alert.
Best Regards,
M. J. Jaya Chitra
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I want to develop an application which will do the following
- Notify the user few mins ahead before we shut down server so he can save his work.
- Notify user few mins ahead before we bring down the applicaiton so he can save his work.
- I don't want to install anything on client side (service, active X etc).
- I don't want to put code on every page for doing this.
- Today i am implementing it for an application, tomorrow i might want to hook that for other application as well.
Any pointers/links/articles/resource in this direction will be greatly appreciated !
Thanks,
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If it's an ASP.NET website, you'd need a web page that makes constant AJAX calls to find out if a shutdown is planned. A client side app would be far more suitable.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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Based on your bullet points above, I am guessing you know the users logged into the application. In the event of a needed application or server shutdown, could you send an email notification to logged in users?
Another option ... are you using a master pages? You could consider placing a control in the header or footer which could display the status of an application or server shutdown.
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ahmedel wrote: Another option ... are you using a master pages? You could consider placing a control in the header or footer which could display the status of an application or server shutdown.
That works, except that he seems to me to want to show a notification, he doesn't want the user to have to refresh a page to see it.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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I don't want user to refresh the page.
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Hello,
Thank you for reading this post. I am new to Javascript and ASP.NET development so please bear with me. I have a page that renders fine in IE but the same functionality gives me error in Firefox. I have a form which has a bunch of check boxes and there is a a particular checkbox lets call it ABC, and clicking on it, it needs to uncheck the other boxes, and if other check box is clicked, it shud uncheck the the ABC checkbox. My app works fine in IE but not in Firefox. I know there are a few keywords that is Microsoft proprietary, and is not all browser friendly, but i cannot figure out how to change it. Here is my code below. All help is appreciated.
function ValidateCheckedValues( ctrl , isChecked )
{
// Purpose : This function is called when the user clicks on any checkbox in the equipment requirements table on the page
// If the user clicks on the "ABC" checkbox it clears all the check boxes for that meeting,
// but if the user checked any other checkbox, it removes the check from the "ABC" checkbox
try
{
if( ctrl.parentElement.attributes("SubCode").value == "NONE" )
{
if( isChecked )
{
for( counter = 3 ; counter < ctrl.parentElement.parentElement.parentElement.children.length ; counter++ )
{
ctrl.parentElement.parentElement.parentElement.children( counter ).children( 0 ).children( 0 ).checked = false;
}
ctrl.checked = true;
}
}
else
{
if( isChecked )
{
for( counter = 3 ; counter < ctrl.parentElement.parentElement.parentElement.children.length ; counter++ )
{
if( ctrl.parentElement.parentElement.parentElement.children( counter ).children( 0 ).attributes("SubCode").value == "NONE" )
{
ctrl.parentElement.parentElement.parentElement.children( counter ).children( 0 ).children( 0 ).checked = false;
}
}
}
}
}
catch( ex )
{
alert( ex.message );
}
}
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what is the error ?
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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please note:this works fine in IE but throws errors like ctrl.parentElement has no properties.Please let me know what error is happening here. I changed the parentElement to parentNode and the children to childNodes but it just will not work for firefox. Iam a Software support person so do not have an indepth handle on the workings of .NET or Javascript.
Thank you.
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"ctrl.parentElement.parentElement.parentElement"
Code like this is very bad. It assumes that the ctrl has 3 parents and will crash if it does not.
If your problem is in Firefox, you should download Firebug, which will let you debug your javascript inside firefox and see exactly what properties are present and what their values are.
Ridge Howison wrote: so do not have an indepth handle on the workings of .NET or Javascript
Then you're the wrong person for this job, why are you doing it ?
Why did my answer get voted as bad ?
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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1) parentElement should be parentNode[^]
2) IE tends to not insert text nodes for whitespace in the HTML; Firefox does. This doesn't normally make any difference, but your code is making some very specific assumptions as to how many children certain elements will have... this is probably going to trip you up sooner or later. Stop it. Either give the target elements ids and use document.getElementById()[^] to retrieve them, or get a library like jQuery[^] to help you traverse the DOM in a safe, sane manner.
Citizen 20.1.01 'The question is,' said Humpty Dumpty, 'which is to be master - that's all.'
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 i have to open an excel reports in my web application
i have created all my reports and when i host my web application and tested my reports in client machine then my excel reports are not opening
i already configured dcom(for excel application launch and access rights) and iis
i am using win 2003 server iis 5.1
win xp client machine
Mohit
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You need to send the excel file with response.binarywrite and hope your user has excel installed.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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Hi All
I am working since 2 days to display images in a datalist and the code used is given below, but its not displaying the images.
I am storing path of the image in database in imagepath coloumn. Kindly help me please.
html code
---------------
<aspataList ID="dlImage" runat="server" RepeatColumns="3" Width="311px" Height="334px">
<ItemTemplate>
<asp:ImageButton ID="imgPhotos" ImageUrl='<%#Eval("imagepath")%>' Height="100%" Width="100%" runat="server" />
</ItemTemplate>
</aspataList>
c# code
----------
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
cnOledb = new OleDbConnection("provider=microsoft.jet.oledb.4.0;data source=" + strRootDir + "App_Data\\dbPhotos.mdb");
cnOledb.Open();
string strSelImages = "select imagepath from tblPhotos";
DataSet ds = new DataSet();
OleDbDataAdapter da = new OleDbDataAdapter(strSelImages, cnOledb);
da.Fill(ds);
dlImage.DataSource = ds.Tables[0];
dlImage.DataBind();
cnOledb.Close();
}
}
Thanks
wajid
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Does te HTML look the way you expect it to ? Is the image path you're getting relative to the root of the app, the location of the control/page in question, both, or neither ?
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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I am storing correct paths in database because whenever I am copying nd pasting any of the path in address bar of internet explorer, its showing the image, but when the same coloum of the database is linked to the datalist its not displaying the images.
I am getting some kind of small icons in datalist, but not the one which we generally get when we give wrong path like red x.
Thanks for your reply. Kindly help me with some good answer
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OK - so you marked my answer as bad, and you hope I'll still help you ?
If you're seeing 'some sort of small icon', it's probably the image that's being pointed to. Look at your HTML to try to work out what's going on.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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problem is resolved. Actually I was storing the complete physical of my application in the database like D:\something\myapplicating\images\img.jpg that is why images in the datalist are not displayed. Hope this will help others
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problem is resolved. Actually I was storing the complete physical path of my application in the database like D:\something\myapplicating\images\img.jpg that is why images in datalist are not displayed. I changed the path to images\img.jpg and it worked. Hope this will help others
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Hello everyone,
I've been struggling with this for the last 6 hours, and after a lot of google-ing and research, I thought I'd ask for a little help. See:
a) I have a PDF document exported to a MemoryStream.
b) The control firing the event which leads to the PDF generation and exporting is inside an AJAX UpdatePanel.
So all I want to do is to send the contents of that MemoryStream (containing the PDF) to the browser, so the user sees an "open or download" dialog. As far as I remember, it used to be really easy, at least before AJAX times. Now I've learnt over researching, that the AJAX framework doesn't like Response.Write() at all, but despite my searching, I haven't found a workaround yet.
Here's the way I do it:
Public Sub ExportarPDF(ByVal rpt As CrystalDecisions.CrystalReports.Engine.ReportDocument, ByVal Nombre As String)
Try
Dim ms As IO.MemoryStream = rpt.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat)
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/pdf"
Response.AddHeader("content-disposition", "attachment; filename=" & Nombre & ".PDF")
Response.BinaryWrite(ms.ToArray())
Response.End()
Catch ex As Exception
Throw ex
End Try
End Sub
And the error it returns (as far as I know, whenever you use Reponse.Write() on an AJAX postback):
Sys.WebForms.PageRequestManagerParserErrorException" The message received from the server could not be parsed. [...] Error parsing near '%PDF-1.2
%????
10'
Where the ? is actually some sort of ? with a question mark inside that I cannot find in the ascii catalog.
Please, if anyone has any ideas of how can I make a browser display the open or download dialog from an AJAX postback, let me know.
Thanks in advance!
Kazz
"Users are there to click on things, not think. Let the archs do the damn thinking."
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You can't send a response like that via AJAX, the browser is simply not expecting it. Nor do you need to, if you have a link and it does a binary write, your page will not refresh, so the end effect is the same as if you used AJAX.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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Code:
using System;
using System.IO;
using System.Configuration;
using System.Data;
using System.Collections;
using System.Text;
partial class Default2 : System.Web.UI.Page
{
private string[] strDictArray;
private bool boolDictionaryLoaded = false;
private int intErrors = 0;
protected void Page_Load(object sender, System.EventArgs e)
{
int iCurrentCount = 0;
string[] arrWords;
string strCompleteOriginal = "";
int iWordCount = 0;
string strAlternative = "";
int i = 0;
if (string.Trim(Request.Querystring["txtContent"]) == "")
{
return; // TODO: might not be correct. Was : Exit Sub
}
else
{
strCompleteOriginal = string.Trim(Request.Querystring("txtContent"));
}
if (!IsPostBack==false)
{
iCurrentCount = 0;
iWordCount = 0;
intErrors = 0;
hfOriginalstring.Value = strCompleteOriginal;
hfCurrentCount.Value = "0";
arrWords = string.Split(strCompleteOriginal, " ");
iWordCount = arrWords.Length;
hfWordCount.Value = iWordCount;
hfErrors.Value = "0";
}
else
{
arrWords = string.Split(hfOriginalstring.Value, " ");
iCurrentCount = hfCurrentCount.Value;
intErrors = int.Parse(hfErrors.Value);
}
txtCurrent.Value = arrWords[iCurrentCount];
if (Request.Form["cmdCancel"] == "Stop")
{
arrWords = string.Split(hfOriginalstring.Value, " ");
iWordCount = hfWordCount.Value;
string strReplace = hfFinal.Value;
int j = 0;
for (j = iCurrentCount; j <= iWordCount - 1; j++)
{
strReplace += arrWords[j] + " ";
}
intErrors -= 1;
stopChecking("frmSpellCheck", "txtContent", strReplace);
return; // TODO: might not be correct. Was : Exit Sub
}
if (Request.Form["cmdNext"] == "Next")
{
arrWords = string.Split(hfOriginalstring.Value, " ");
iWordCount = hfWordCount.Value;
if (txtManual.Value == "")
{
arrWords[iCurrentCount] = lbSuggestions.SelectedValue;
hfFinal.Value += lbSuggestions.SelectedValue + " ";
}
else
{
arrWords[iCurrentCount] = hfFinal.Value;
}
}
}
protected void lbSuggestions_SelectedIndexChanged(object sender, EventArgs e)
{
}
}
Error:
1.System.Web.HttpRequest does not contain a definition for Querystring
2.The best overloaded method match for string.Split(params char[])
3.cannot convert from string to char
4.System.Web.UI.WebControls.TextBox does not contain a definition for value
Please find me a solution
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Well, those errors are all true. Do you know C# at all ? I am assuming you copied some code from the web and have no idea how to understand these error messages. If I were to correct them for you, you'd still be lost. Buy a basic book on C# and read it. Read the error messages, what they say is true.
1 - C# is case sensitive. QueryString
2 - Did you mean to call Split or Replace ? Split expects a char, not a string.
3 - a string is an array of chars
4 - TextBox most certainly does not contain a definition for Value. It DOES have a Text property.
Please try to learn some basics, and perhaps even learn to do some searching, we love to help, but we'd like to assume some basic effort/ability on the part of those asking, too.
Christian Graus
Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.
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Hello,
i have made a very simple file upload app, that i want users to be able to upload images to a folder on my server, well localhost for the time being 
here is the simple upload code...
protected void ButtonRegisterDetails_Click(object sender, EventArgs e)
{
String FileName = MyFile.PostedFile.FileName;
String FileContent = MyFile.PostedFile.ContentType;
int FileSize = MyFile.PostedFile.ContentLength;
String justFileName = Path.GetFileName(FileName);
try
{
MyFile.PostedFile.SaveAs(@"C:\Downloads");
ProgressTextBox.Text = "uploaded ok.... i think";
}
catch (Exception ex)
{
ProgressTextBox.Text = ex.Message.ToString();
}
}
The code looks fine but the problem i have is that i keep getting an exception saying that the access to the destination folder is denied.
Access to the path 'C:\Downloads' is denied.
Ive been reading about granting permissions for 2 days now, and although im new to IIS i believe that because i have the NETWORK SERVICE but not ASPNET user available im using IIS 6.
in a disparate attempt to try and solve this i created a new project using the same C# code as above and pointed the images to be saved in a new directory "C:\Downloads". i granted full access permissions to all the users that were listed when i right clicked on the C:\Downloads dir and selected....
Sharing and Security
Security tab
add
Advanced
Find Now
The users that people have said should work "IUSR_mycomputer" and "NETWORK SERVICE" make no difference either, but even by giving all users, well over 60 of them full access permissions it makes no difference. 
could it be something to do with the way ASP.NET, or IIS is installed on my machine ??
Im using Windows XP pro 64bit and Visual studio 2008.
basically my question is.... how can i grant write permissions to a folder in my asp.net app as changing permissions in the Sharing and Security properties has done nothing ?? 
thank you for your time.... please help
Truegilly
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