|
In a registration page after clicking submit button when we are pressing F5(refresh button) it again fires the submit button events(code).why?plz tell me the reason.and also how i can prevent this situation.
thanks in adv.
Sujit
|
|
|
|
|
Posted data will be kept in browsers cache, and when refresh is pressed, same data will be posted again which will invoke buttons event. To prevent this
1- After insertion to database, redirect to the same page. This will remove posted data from browser's cache
2 - Before insertion do a checking to verify that data is not duplicating.
|
|
|
|
|
thanx for yours help.
But i hv still 1 problem.after redirect the page Ispostback property fires again but i don't need this.bcz i hv some logic in Ispostback which will fires only once.
thn how can i avoid this Ispostback.
Sujit
|
|
|
|
|
|
Michael Sync wrote: What I did in my project is that if the user clicks the submit button, I disable this button during the processing time.
But after the process is over and in case you are there in the same page and then refresh button is clicked again the same problem will occur. 
Apurva Kaushal
|
|
|
|
|
Apurva Kaushal wrote: But after the process is over and in case you are there in the same page and then refresh button is clicked again the same problem will occur.
No. I will be in the same page.. As the process is over, there won't be any data in the page or cache.
|
|
|
|
|
Michael Sync wrote: No. I will be in the same page.. As the process is over, there won't be any data in the page or cache.
But what I think is even after the process is over and you have not cleared the data exclusively it will be available in the page, isn't it?
Apurva Kaushal
|
|
|
|
|
Michael Sync wrote: As the process is over, there won't be any data in the page or cache.
I guess you will be disabling the button using JS, right ? Then after the postback(may be insertion), if user hits refresh, the previous event will fire again. I don't think that disabling button will prevent this.
|
|
|
|
|
That is what I too was expessing that unless it has been cleared explicitly it won't be cleared.
Apurva Kaushal
|
|
|
|
|
Hi,
i have placed the textboxes in the gridview
i have used the dropdownlist out of the grid,if i select am item from dropdown list 2 if my textbox in grid view will be filled and i have to enter an value in the another textbox and if i use tabkey it should multiply the values in the 2 textbox and display the value in the another textbox
can anyone help plz
thanks in anvance
|
|
|
|
|
can u give ur exact requrement or code.
coz frm ur post m nt getng how many rows r there in ur grid.
if three den it would b easy to do so..
|
|
|
|
|
i have a textbox name quantity in which the user will put the value,and another textbox as usage ....
i need to multiply values in these two table
and dispaly the result in third textbox
|
|
|
|
|
can i install .net framework in windows 98
|
|
|
|
|
How is this an ASP.NET question ?
What did google tell you?
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
|
|
|
|
|
hogan.smith wrote: Because they can never be used as a base class, some run-time optimizations can make calling sealed class members slightly faster.
then, maybe. Yes. Thanks. Anyway, I've been using the normal class since long time back.. I don't have any problem (including the performance issues) with those classes..
|
|
|
|
|
I am not an expert but I think we are unable to calculate the performance difference
Regards,
Hogan
|
|
|
|
|
Yes it will be bit tough to identify the performance problems. Do experiments with both methods, trace the results and check the execution timings. Also you can use any of the profilers available for .NET
|
|
|
|
|
Yes you are correct Navaneeth
|
|
|
|
|
Hi to All,
Here i am trying to upload multiple files on a server. This works fine for the files having size less than 4 to 5 MB, but whenever i trying to upload the file whos size is more than that it even does not take that file. Here i am using a List box to contain the files to be uploaded. the code for "add files" and "upload files" as follows....
//code for Add file Button
private void AddFile_Click(object sender, System.EventArgs e)
{
lblStatus.Visible=true;
lblStatus.Text="";
//call to HideControl()
HideControls(1);
bool b=true;
if (Page.IsPostBack == true)
{
listFileList.AutoPostBack=true;
// This function adds the selected files in the List Box.
// if the file is not selected then it dispalyes the error message.
// Check for the availability of the files in the FindFile control.
if (FindFile.Value!="")
{
if (listFileList.Items.Count!=0)
{
for (int i=0; i<listfilelist.items.count; i++)
="" {
="" b="true;
" if="" (findfile.postedfile.filename="=" convert.tostring(listfilelist.items[i]))
="" lblstatus.text="File already present in listbox" ;
="" break;
="" }
="" (b="=" true)
="" hif.add(findfile);
="" listfilelist.items.add(findfile.postedfile.filename);
=""
="" else
="" }="" end="" of="" if-else.
=""
="" sets="" the="" upload="" button="" caption
="" (listfilelist.items.count="">1)
Upload.Text= "Upload All";
else
Upload.Text= "Upload File";
listFileList.AutoPostBack=true;
}// end of AddFile_Click()
// Code for Upload file button
private void Upload_Click(object sender, System.EventArgs e)
{
if (!IsPostBack==false)
{
HideControls(1);
//string stat1="";
string baseLocation = Server.MapPath("~/Files/Upload/");
string status = "";
if((listFileList.Items.Count == 0) && (filesUploaded == 0))
{
lblStatus.Text = "Error - a file name must be specified.";
return;
}// end of if
// call to CheckUploadFile() to check availability of the details of specified file
CheckUploadFile();
// if details of all files available then only it uploads these files
if (stat == "")
{
HtmlInputFile HIF = new HtmlInputFile();
foreach(System.Web.UI.HtmlControls.HtmlInputFile HIF1 in hif)
{
string fn = ln + "-" + System.IO.Path.GetFileName(HIF1.PostedFile.FileName);
if (File.Exists(baseLocation+fn)==false)
{
HIF1.PostedFile.SaveAs(baseLocation + fn);
UpdateCheck(fn, j);
filesUploaded++;
status += fn + "
";
}
else
{
filesExists++;
stat1 += fn + "
";
}
j++;
}// end of foreach
}
// else it will shows the error message
else
{
lblStatus.Text = "The details for following file(s) were not available. Please enter the details & try again.:
" + stat;
stat = "";
return;
}//end of if-else
// after uploading all the files it shows the summary
if(filesUploaded == hif.Count)
{
lblStatus.Text = filesUploaded + " file(s) were uploaded:
" + status;
}//end of if
else
{
lblStatus.Text = filesUploaded + " file(s) were uploaded:
" + status + "
" + filesExists + " File already exist(s).....
" + stat1;
stat1="";
}
hif.Clear();
listFileList.Items.Clear();
}
}// end of Upload_Click()
Any body tell me what is the problem...?
Pravin
|
|
|
|
|
PRB: Cannot Upload Large Files When You Use the HtmlInputFile Server Control
:
RESOLUTION
To resolve this problem, use one of the following methods:
• In the Machine.config file, change the maxRequestLength attribute of the <httpruntime> configuration section to a larger value. This change affects the whole computer.
• In the Web.config file, override the value of maxRequestLength for the application. For example, the following entry in Web.config allows files that are less than or equal to 8 megabytes (MB) to be uploaded:
<httpruntime maxrequestlength="8192">
|
|
|
|
|
hi,
in my project i want to create a text editor. i have searched in google. but i didn't get any relevant information. please provide me some reference to find out sample codes for that. please help me..
|
|
|
|
|
|
|
Those are my favorites..
TinyMCE (Tiny Moxiecode Content Editor)
TinyMCE, also known as the Tiny Moxiecode Content Editor, is a platform-independent web-based JavaScript/HTML WYSIWYG editor control, released as open source software under the LGPL by Moxiecode Systems AB. It has the ability to convert HTML textarea fields or other HTML elements to editor instances. TinyMCE is designed to easily integrate with content management systems.
TinyMCE integrates with many different open source systems, such as Mambo, Joomla!, Drupal and WordPress.
(Ref: http://en.wikipedia.org/wiki/TinyMCE)
FCK Editor
This HTML text editor brings to the web much of the power of desktop editors like MS Word. It's lightweight and doesn't require any kind of installation on the client computer.
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
