Catch Block In Text.vb And Display The Results In Default.aspx?
Feb 26, 2010Catch block in text.vb and display the results in default.aspx
View 5 RepliesCatch block in text.vb and display the results in default.aspx
View 5 RepliesFor the code shown below, how would I use a try/catch block to handle an error if it were to occur?
TOTKILO.Text = KILO.Text * TOUCH.Text * 0.01
TextBox10.Text = TextBox9.Text * TextBox8.Text * 0.01
K = Math.Round(Val(TOTKILO.Text) - Val(TextBox10.Text), 5)
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I used VB.Net controls and LINQ to SQL to perform all Updates and Inserts, so when an error occurs I want to show "Enter Data Correctly", how do I do that once I catch an exception?
I have a simple function which tries to get a value from an Obout grid filter column, and if the value is empty, ignores it and moves on. For some reason this code ignore my catch block and always shows a System.FormatException when the input string is empty More bizarre, if I use visual studio's debugger and set a breakpoint on that line, the catch block functions normally (after I continue from that line). I have already confirmed that my Debug | Exceptions | CLR are not set to catch when thrown. I have also confirmed this same behavior in the production version.
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how do i make sure -1 is returned if an error occored?
Public Function ExcecuteNonQry(ByVal sql As String, Optional ByVal connectionString As String = "")
Dim returnVal As Integer = -1
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Why would my try-catch block still be throwing an error when it's handled?[code].......
View 8 RepliesIs there some special way to catch exceptions in finally block ?
View 2 RepliesI've tried to Google this problem, but haven't found any relevant results.I am trying to handle HTTP 500 errors when logging into a web service (the web service returns 500 when login is incorrect). An WebException is thrown, but I can't seem to catch it properly. The exception is highlighted in green instead of the normal yellow (having trouble finding info on this as well)
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This is a followup question to this Should I stick with the Try/Catch/Finally construct, or go with the Using construct? Sample Code for Try/Catch/Finally:
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We've created a little plugin to add a block of xml comment and create a try-catch to a function. (we simply add this to each and every function we write).But with the latest devexpress update I'm having a problem with the following code.[code].........
View 1 RepliesI am using ASP.NET 2.0. When i place a TRY CATCH block in my event it always go into the CATCH section, in my case it re-direct the page to Default.aspx. But if I remove the TRY CATCH block the code get's executed fine and it does what it suppose to.
CODE:
There is no error message when i place a break point by the "Catch ex As Exception" Am I reading the selectedRowIndex DataKey value incorrectly maybe?
In visual studio when I type the word try it automatically adds the catch and and try for me.
I want to add after the catch something like Msgbox(ex.message)... I'm tired to type the same thing over and over.
I normally use the following for global error handling:
Code:
Dim currentDomain As AppDomain = AppDomain.CurrentDomain
AddHandler currentDomain.UnhandledException, AddressOf MYExceptionHandler
AddHandler Application.ThreadException, AddressOf MYThreadHandler
I normally don't have a MDI application, and When I force an error, neither of the events get fired. I don't have anything in a try catch block. How do I do this with a MDI application?
I'm trying to catch an invalid entry in a textbox that I use to enter numbers using the subroutine below.
In the Catch blok I want to change the ForeColor of the textbox that contains the invalid entry.
This did function but now gives me a null reference exception on the line where I change the ForeColor.
Private Sub SaveParm()
Dim Temps(2, 2) As Double
Dim Cname As String = "Text0"
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I have a program in which users are entering numbers into text boxes. I'm checking for proper data entry using a TRY-CATCH block. It works great and delivers an error message if the users enter anything non-numeric.
The problem is that now I need the users to enter negative values, but the TRY-CATCH is seeing the negative sign as non-numeric.
This is part of my block which handles incoming messages via TCP. Sometimes it sends scrambled messages which are unpredictable and i need a Try + Catch block for it:'
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I can either get "Input string not in correct format" or "typecast not valid". But this is simply supposed to be routine to run into and be able to handle. but that stupid error message keeps popping up I've heard of JITDebugging, should I use that?
ill get the obviuose out of the way. I have XP Pro, VB2010, query(read only) to an ODBC db, displaying several results in a text box. How can I make the data display w/o the the numbers displaing decimal places. These are quantities that are to be displayed not pricing, ie. the result would say 7.0000 qty on hand, and it should say 7 on hand. The code is below,
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How can I display only the most current results from a text file? I have a button the user can click that needs to display only the most current results from the text file.
View 9 RepliesSimply put, I have a text file full of reg values. I want to search the text file for X number of reg values. I want to then, have those values and their dword values (whole line + next 3 to 4 lines in the file) listed in either another text file or an Excel spreadsheet. Regardless of the format, I would like to have the values sectioned off for each of the values searched (probably tables of some sort).[code]...
View 1 Repliesokay i have this code
Private Sub Form_OpenGradeBook_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I am writing ASP.Net Web-form in VB.
I have a system which have already handled exceptions by try-catch blocks everywhere.How do I quickly and generically implement exception logging like overriding something instead of inserting logging functions in every single catch block?
I am writing my own script for a simple calculator that determines if a number is prime, and its prime factors.[code]The loopcount = compare - 2 means I want the loop to be 2 less than the square root of the answer so that when do a descending calculation (loopcount = loopcount - 1) it doesn't see if 1 or 0 is a factor of the answer. for the calculations after that, I want, every time n1 = n2 (a whole number factor of the answer), I want to report those results to a text file (n2 and n3) in this format "(n2, n3)" then go to the next line. and continue to execute the loop until the loopcount is zero. Currently, when I run the code, the application closes when I click the prime button (button that runs this code) and I don't know why. This is my first semester in school, and have never coded before, so I am a definite laymen with code, but I really really want to learn it (hence why for fun im just creating algorithms for different things).
View 2 RepliesI started with not knowing anything and I have built 2 programs over the last month and a half and have learned valuable information from the help of this board. I have 1 last hurdle before I am done and I am hoping to get another tip for this. First of all let me start by explaining what I have done.
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Why would a VB/ASPX page not return results for a query which runs fine with other Oracle clients? (Same username) The following code should first output the query and then execute it outputting a single exclamation point per record. However, it outputs the query (as it should), but does not return any rows (nor error). If I copy the query to SQL Plus (or other editor) as the same user, the query returns results.
Why might my code not output any results?
Dim MyQuery As String = "...some query..."
Dim Factory As DbProviderFactory = DbProviderFactories.GetFactory("System.Data.OracleClient")
Dim myConn As DbConnection = Factory.CreateConnection
Dim myCommand As DbCommand = Factory.CreateCommand
Dim MyReader As DbDataReader
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I have a textbox,it should display something like "please enter your name" by default.
The default text must disappear when i click on that textbox.
I am attempting to hide the document name from the user by using a folder with appending querystring in the following format:
http:[url].....
When I post back the page, it directs it to the physical page:
http:[url]......It it possible to motify the postback address so I can omit the default.aspx from the client browser?
I am trying to use myclass.cs from aspx.vb but receive error "myclass not declared" when I give command:
Imports myclass
I'm trying to use ASP.NET MVC with older versions of IIS that have trouble with MVC's default routing. I found a suggestion to add .mvc.aspx to my routes. So instead of this:
routes.MapRoute( _
"Default", _
"{controller}/{action}/{id}", _
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What do I need to change in IIS and/or my MVC application to get the default page to work correctly?
NOTE: I tried adding RouteTable.Routes.RouteExistingFiles = True per this answer, but that didn't seem to fix the problem.
How to get the value of Default.aspx textbox1 control into webusercontrol Textbox ?
View 1 RepliesPossible Duplicate: Removing a querystring from url in asp.net
How to hide asp.net querystring displayed in address bar as default.aspx?id=2&name=sanjay
I'm using silverlight3 and vb.net..I want to pass the value from Default.aspx to my App or Main page. I wrote the code in my default.aspx page which it is returning the local ip address of the client System, I would like that same address to be used in my silverlight pages.
VB code
Dim clientIPAddress = System.Net.Dns
.GetHostAddresses(strHostName).GetValue(0).ToString()
This clientIPAddress will get the local ip of the client which is like 192.168.1.12. Now i want this value to be passed to my main page. How to pass this value from default.aspx to my main page.