Where to fix this errormessage?
41|error|500|Input string was not in a
correct format.|
I'm confused
looks like server 500 error, line 41, with error message "Input string was not in a correct format", best to debug and break on all errors, assuming you are using VS you will break on the line of question
Input string was not in a correct format is typically an invalid integer cast somewhere. Make sure in your update panel you're not sending an improper string to an integer cast.
Related
In web service Gloval.asax, i put log4net.Config.XmlConfigurator.Configure(New FileInfo(Server.MapPath("~/Web.config"))) in Application_Start.
Now, I have a console application. I'm try to put log4net.Config.XmlConfigurator.Configure(New FileInfo(AppDomain.CurrentDomain.BaseDirectory("~/app.config")))
and i get Conversion from string "~/app.config" to type 'Integer' is not valid. Whats causes this?
Turn option strict on and you'll see the error at compile time.
AppDomain.CurrentDomain.BaseDirectory is a string. When you reference something in brackets after that it's expecting a character index, which obviously "~/app.config" isn't.
Try AppDomain.CurrentDomain.BaseDirectory & "/app.config" instead.
I'm trying to trim an exception message with the below code:
Response.Redirect("IllegalCharactersError.aspx?error=");
string message = ex.Message;
string cleanMessage = message.Substring(message.IndexOf("=") + 1);
Session.Add("IllegalCharactersError", cleanMessage.Replace("\\", ""));
Here is a sample of the string:
A potentially dangerous Request.Form value was detected from the client
(ctl00$Main$EmployerRegistrationCtrl$CompanyDetails$CompanyTradingAs="'<'My Company Trading").
I only want to display '<'My Company Trading but my label is displaying \"'<'My Company Trading\"). with back slashes so its not displaying and I cant seem to remove, any ideads how to acheive this?
Thanks
Darren
You should use HttpUtility.HtmlEncode:
lbl.Text = HttpUtility.HtmlEncode(value);
Use HttpUtility.HtmlDecode to read the Text of the label later:
string value = HttpUtility.HtmlDecode(lbl.Text);
If you want to transfer the error-message via URL, you need HttpUtility.UrlEncode and later HttpUtility.UrlDecode.
But i'm not sure where you are getting the backslashes from. The original error-message has none, are you masking it somewhere?
For the sake of completeness, here you find informations how you prevent the "dangerous Request.Form value"-error: A potentially dangerous Request.Form value was detected from the client
Did you make the IllegalCharactersException (or however it is called in your example) yourself? If you did, you should add some useful properties to it:
ex.OffendingValue
ex.Field
These properties should be filles when the exception is thrown.
That saves you from parsing the string at all.
I have written code for two checkboxes:
string sdate= Convert.ToDateTime(txtFromDate.Value);
string edate=Convert.ToDateTime(txtEndDate.Value);
I am getting the following error: "String was not recognized as a valid DateTime".
Well, it's reasonably clear: the input string wasn't in an appropriate format. I suggest that instead of using Convert.ToDateTime, you use DateTime.TryParseExact and specify the format string (or strings) that you expect the user to enter.
Using TryParseExact instead of just ParseExact means you can detect if the user has entered an incorrect date without an exception being thrown - and you should check for that. Basically the return value of TryParseExact indicates success or failure, and an out parameter is used to capture the parsed date/time on success.
What I hadn't noticed to start with is that you're then trying to assign a DateTime value to a string. That's not going to work - but we can't advise you on what you should be doing instead without knowing what you want to do with the data. I suspect you want to change sdate and edate to be DateTime variables instead.
We've been facing an issue while saving our page. It throws "Input String was not in correct format". After trying so many time, we found there was no problem with the code, but with the "Cache (Temporary Internet File"). After Cache was cleared, it saved without any error. Does anyone knew the reason behind it?
That sounds like the sort of error that you get from a bad parse, say Int32.Parse("foo") where you were expecting "foo" to be something like "123". I am not sure why this would be affected by the cache.
My recommendation would be to look at the method where the exception occurs and see if it attempts to parse a string. If you expect that the string might not be in the correct format (say, it's a string entered by the user, you can replace
int i = Int32.Parse(myString);
with
int i;
if (Int32.TryParse(myString, out i))
Then you can handle the case of bad input in the else.
If however you expect the string should always be in the correct format (in other words, this is truly "exceptional" behavior), then I would leave it as a Parse and add a catch (FormatException ex), and within the catch log the string that caused the exception. This should hopefully help you in tracking down the underlying cause of the problem.
Or if the problem has never reoccured since you cleared the cache back in October of '09, just chalk it up to cosmic rays and move on I guess. ;)
i have a project for uploading video.in that when i click the showvideo button there is a error.
code-
param name="url" value='<%# "VideoHandler.ashx?FileID=" + Eval("FileID") %>'
error message ::: conversion form string="VideoHandler.ashx?FileID=" to type 'Double' is not valid
anyone knows please answer for me thank you
"VideoHandler.ashx?FileID=" is a string. Eval("FileID") results in a double. You have a type mismatch, so the addition overload doesn't know how to proceed. Solve it like this:
string.Format("VideoHandler.ashx?FileID={0}", Eval("FileID"))
Without seeing the code, it sounds like you are trying to convert a string which isn't a valid double. Are you taking the value of the query string and trying to convert it or, could you have accidentally tried to convert the page name along with the query string? Based on the short error message you gave, that is what it looks like. If you post the code which is doing the conversion, that will likely make it clearer what is going on, but that is my best guess at the moment.
You are trying to convert a string which is not a valid double type.
I think you are trying to convert the FileID field to double. Then you can split the string and then convert only the FileID part of it.
You can get the querysting data using
Request.QuerySting["FileID"] and then convert it to double.
or use
Double.TryParse Method
We should see some code. Apparantly the application is trying to convert "VideoHandler.ashx?FileID=" to a Double value which cannot be done.
Just add ToString() to the end of your Eval. FileId is a double, and it's seeing the + and trying to add it to a string, numerically, instead of concatenating it.