Databases :: Page Gets Stuck If User Enters Unicode Characters?
Feb 18, 2010
I have a form that allows users to post text to a MySQL database using an OdbcConnection. Everything works great until a user entered unicode characters into the textbox and sends the data. Suddenly the page freezes and is not redirected to the next page as programmed. When I check the database later it comes up with all of the users data intact, including the unicode characters. I've duplicated this problem several times by entering unicode characters and then entering only ASCII. It happens every time unicode characters are used. Is the problem on the ASP.Net side or the MySQL side? Here is my code. The description string is from a textbox entered on the form.I thought about using a RegEx to get rid of any non-ascii characters before sending the data. Is that recommended? How do I do it?
My GridView is bound to a sql data source and allows editing of fields. Coding is in C# and JavaScript.
Using Visual Studio 2008 in test mode, if I enter a less-than "<" or greater-than ">" character in a GridView textbox an error is immediately thrown upon pressing enter:
"Microsoft Visual Studio Mirosoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status dode returned from the server was: 500"
When the < or > is entered in production, the page aborts and loads the application start page.
I need to be able to catch and replace those characters BEFORE the error is thrown. I've tried hooking OnTextChange code to the textboxes, but the error is thrown as soon as I press enter...the OnTextChange code never runs.
need information regarding how to use Unicode characters in ASP.NET in SDK and what are the data types to be used in it. I have come accross this concept for the first time..All I know id basically we want support for all languages that's why we have opted for Unicode support.
I'm using the FileUpload server control to upload a HTML document previously saved(as webpage; filtered) from MS Word. The charset is windows-1252.The document has smart quotation marks(curly) as well as regular quotes. It also has some blank spaces(apparently) that when looked deeply are characters other than the normal TAB or SPACE.When capturing the file content in a StreamReader, those special characters are translated to question marks. I assume its because the default encoidng is UTF-8 and the file is Unicode.
I went ahead and created the StreamReader using Unicode encoding, then replacing all the unwanted characters with the correct ones(code that I actually found in stackoverflow). This seems to work....just that I cant convert the string back to UTF-8 to display it in a asp:literal. The code is there, its supposed to work....but the output(ConvertToASCII) is unreadable.Please look below:
Also, as I said before, there are some more "transparent" characters that seem to correspond to where the word doc has numbering indentation that I have no idea how to capture their unicode value to replace them....so if you have any tips,
i have just started making an asp document using c# codes
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right now i have a droplistbox in my design.. when i select others, a text box will appear and allow user to enter the new email address. however, i would like the text box to appear invisible to the user when he enters this asp page initially. how do i go about doing it?
just another question.. Supposed that if the user chooses "Others" and entered a new email address in the textbox and i want him to be able to see this new email address as an option in the future when he runs this asp file again. is it possible not to set up a SQL server for my application? or can i just use some variables to set as that?
I want to create a page that can read extended characters in the QueryString. While this normally is not a problem, there is one case where I don't manage: when the QueryString is manually entered (or even pasted).
Here is a simple test-case:
[Code]....
This works fine both when clicking the hyperlink or submitting the form. However, when you enter the special characters manually in the URL, or in some browsers even when you just highlight the URL bar and click Enter to open the page, the characters will be mangled. (You may need to empty your cache or perform a forced refresh to see these results.
In Internet Explorer 8:
Clicking the hyperlink shows the characters unencoded in the URL bar. Submitting the form shows the characters double-byte encoded (for example, the first character "å" (small letter a with ring above, unicode position 0xA5) is encoded as %C3%A5 instead of just as %A5. In both cases, the output shows the correct characters.After clicking the hyperlink (which creates an URL with readable characters), clicking the URL bar to highlight the URL and pressing Enter to open the page, shows square boxes instead of the characters as output. Note that you may have force a reload of the page to see this. The same happens when you enter characters manually in the URL bar.Highlighting the URL bar and submitting the double-byte encoded URL (as it is created by the form) shows the output as it should.Manually entering single-byte encoded characters ("%A5%B8%A6") will again show boxes instead of characters.
I have a WebForm search page that gets occasional hits from international visitors. When they enter in text, it appears to be plain ASCII a-z, 0-9 but they are printed in bold and my "is this text" logic can't handle the input. Is there any easy way in ASP.NET to convert unicode characters that equate to A-Z, 0-9 into plain old text?
we have a text box where we wish to capture let's say a city name. when the user types let's say l - a list of cities starting with the letter l should appear (london, liverpool, leeds etc)...
I'm working with the AJAXControlToolkit in an ASP.NET 3.5 application. I've got a textbox on the page to take the person's social security number, and I've put an masked edit extender and an masked edit validator, force the user to enter the whole SSN, but it doesn't work. I'm not sure what I'm doing wrong, or have left out. Here's the relevant code:
I am using 3 text boxes for range selections. I want to show range value in a message box when user enters range in text box.
Suppose user enters
100 in 1st text box , I want to show "you are selected <100". 100 in 1st text box and 500 in 2nd text box I want to show "you are selected 101 - 500" 500 in 2nd text box and 1000 in 3rd text box I want to show "you are selected 501 - 1000"
After entering a value in 3rd text box ,I want to show all ranges in message box.
I have a page that supports multiple languages (the user can change the language at any time).I update the thread's culture based on the user selection in the Initialize Culture method.
I also update the response object based on the code page for the selected country and set its charset to the WebName of the encoding used (if i don't update the response object based on the code page, then the data bound to controls gets garbled). the resource files are also localized based on the code page.
After doing the above changes, the page is getting displayed correctly in the browser.
However, when the user enters data in one of the Asian languages, the text gets all messed up. The drop down list actually throws the invalid callback or postback argument exception.
On checking the request.contentEncoding i found that it was still UTF-8 (set in web.config).
If I change the request.ContentEncoding during BeginRequest event, the input comes in correctly. But I am not sure of the user selected language this early in the page cycle.
I have a simple page, 2 textboxes & 1 button, wherein when button is clicked the values in both textboxes are added to a database table. code works however, when button is clicked the values are still in the textboxes. I created txt1.text = vbnullstring & txt2.text = vbnullstring after Myconnection.Close() just to delete the values in the textboxes.
but when I try to refresh my page, The values are still added to my table. I could redirect to a new page after a successful entry but, I just what to add a label saying "New Entry Added", clear the textboxes and waits for a new entry.
I have gone through my DB and code so far, I have hit a problem. For a particular enrty in my DB I pick up descriptions and tags (both are strings)for japanese language. Now, in a ASP.NET page,the description is shown fine but the tags which are japanese as well, are replaced with ? marks, what am I doing wrong here? The same page displays description fine but within a <div>, tags are replaced by ? marks. The code is as follows
I need to create a form that would work like this Choose Provider :( user would select gmail, yahoo, hotmail, ext) Enter Name: ( user enters there name) Message : ( user enters message) and then the "submit"button.
On my page I have textbox in which user enters value. When 3 values are entered the autocomplete panel shows.In the panel the names and surnames of all available people are shown bassed on the value user enters. Bellow each name and surname is picture of each "candidate". However images are stored on another server (using https "protection") and some people don't have picture.
onerror="this.onerror=null;this.src='../Pics/Errors/NoPic.jpg'" into <img> tags in Web Handler.
I just begin creating a website for an organization. First page to be displayed in the login page. I dont have any knowledge in ASP.NET Security. On Login page, i want to display UserName field as disabled with the useralias of the user who currently logged into Windows. Password user has to provide and it should be that user's windows password.
How do i validate that password that user has entered is his windows password?
I want user to enter name in Arabic if the user enter in english it should give Message " Enter Message In Arabic " and same for English if user try to enter in arabic it should give a message "Enter Name in English" ...
I've built a web application that employees sign on to and take tests, get certifications, etc. My client wants all employees set up so that their user name is their real name, in the format of "Lastname, Firstname". It doesn't look like MembershipProvider will allow commas or spaces in the user name. Am I going to have to store this in a separate column in another table, or is there a way to tell the provider to accept those characters...
I want to force user to type more than 6 characters in password field.we cannot usee range validator because password characters can be mix(i.e.Numeric or alphabates or special characters)
