I am working on a small program to find all images on drive and display them using Cygwin commands. I found a code snippet that seems to work well but get a error when I run it. Here is code:
Try
Dim r As IO.StreamReader
r = New IO.StreamReader(workingdir + "\images.txt")
[code].....
I cannot find how to display an error message when what I typed in the listbox field is not in the listbox collection.
For example the listbox contains the following items
1) Apple
2) Strawberry
3) Mango
If for example I type "Mongo" and then press tab to another field, a message will pop up saying I typed something not in the listbox. Anyone who knows how to code if text in textbox1 is not in listbox then blah blah blah.
i have 3 listboxes and a calculate button and a lblGrandTotalCost, the program works like this when i select an item from listbox 1 and listbox 2 then click "calculate" it shows a result in listbox 3, after repeating this rocess few times if u click the lblGrandtotalCost button it calculates the grand total of all the totals that are in listbox 3, Now i want the program to show an error message if some one click the lblcalculateGrandTotal button when listbox 3 has nothing in it or empty. how do i do that?
i wrote this code but it don't seem to work
If lstGrandTotalCost.Items = "" Then
MessageBox.Show("warning! theres nothing in listbox 3", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning)
I have a functioning program that has been completed that based on miles and gallons used, both will display the individual MPG for each single entry as well as compile a total for the miles, gallons used and overall MPG at the bottom.My problem is that when 0 is entered for fuel, the MPG calculation says Infinity and 0 is placed in the gallonsUsedListBox.I've been trying to get the statement "Gallons must be greater than zero" into thegallonsUsedTextBox by utilizing an If..Then statement but to no avail. I'm not sure where to input it or if my avenue of using the If..Then statement is even on track. Here is the code I have:
Option Strict On
' MPG Average
Public Class MPGAverage
[code].....
an error message when I am trying to load the data into a listbox and the value in the table is NULL. I am new in programming and I am using vb2005 Here is my
[Code]...
how to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
I am getting the error Parser Error Message: The server tag is not well formed. on the code line below:
<asp:HyperLink ID="imgFileType" ImageUrl="images/Icon_Pdf.gif" NavigateUrl='<%#"javascript:ViewFile('erg_", Eval("DocumentName") %>' runat="server"></asp:HyperLink>
I need the url link to be parsed as:
javascript:ViewFile('erg_Invoice_3200_QRG_Restaurant.pdf');
What am I missing in the syntax?
I am facing another error "An error occurred trying to load the page. Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND) )" performing the following scenario:- Opened a sample VS 2010 WPF project that I receiveved from a co-worker (Project compiles, and run on his machine)I tried to open project properties (Project --> Properties)The project properties panel/window didn't open, all it had was an error symbol (red/white X) and the error message above(HRESULT: 0x80020003).I am unable to view niether the designer window nor the code window (no messages are reported) but the pane where the code/design shoud display is empty, all you can see is the background color.
View 1 RepliesI know it's possible in asp.net to create a custom error page in a web app, by putting the following line in the web.config: <customErrors mode="RemoteOnly" defaultRedirect="frmErrorPage.aspx" />
I have had to do this for my web app, since it is clearly much tidier than letting the program bomb out with it's ugly default error page. My custom error page just has the customer's logo and a brief message saying "Error has occurred. Please return to homepage"The trouble now is that I have no way of knowing what caused the error, when a customer reports it.
Is there a way to make the actual error message appear on this custom error page too?
I dragged and dropped a label control on my web form. But then whe I go to my VB .net code behind file, if I try and set a property on that label control, I am getting a "Declaration Expected" error message for the label I created.Yet if I do try and explicitly declare my label control, the compiler tells me that the label control is already declared.[code]
View 4 RepliesI have a form like that: What I need to do is when the user selects item1 from combobox a message will be displayed in listbox. My combobox has 11 items so I must have 11 appropiate messages to be stored automatically in listbox . (The message is appropriate of what item is selected from the combobox)
Here is the full code implemented :
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim msg1, msg2, msg3, msg4, msg5, msg6, msg7, msg8, msg9, msg10, msg11 As String
If ComboBox1.SelectedValue = "Item1" Then
msg1 = "Ati ales item1 din combobox"
[Code] .....
The program has errorhandle and write log function, however, it could not catch the error message in the program.
The following error message in Event Viewer. Error Module: oleaut32.dll ,version 5.1.2600.5512, error code: 0x000048f9
When I run the code, type a value in quantity and hit the calculate button I get an error message stating, "Quantity must be a numeric value" and I don't see in the code what I have missed. I thought I set quantity as a numeric value by making it an integer and parsing it.
Private Sub calculateButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles calculateButton.Click
' Calculate subtotal
Dim subtotalDecimal, amountDueDecimal, shippingDecimal As Decimal
[code].....
I devoloped a program that detects type of iphone If the iphone is detected it show me an error Index array out of bounds How can i make it show a message box showing Iphone not detected
View 1 Repliesi am beginner of OOP program. i am using vb.net my problem is the vb.net not telling me if i have Error (Cannot implicitly convert ) at design time, but C# telling me if i have that error at design time.
[Code]...
In IIS 5.1, i have set the website security to Basic Authentications and i have set the page for custom error in IIS which is directing to c:est.asp file. When user try to access the website, the user name and password screen comes up and after entering the wrong password 3 times, system shows the custom error page which is fine but why does system prompt for the user name and password again (for three times)?
I don't want user login screen on custom error page. I have tried to put the custom error page on the default website and set the security to anonymous but it still shows login screen on custom error page.
Chr(34) : Chr is not declared error message
View 3 Repliesi am receiving this error message when my application is being viewed on the remote machine(internet)
Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.Source Error:
Line 7: Dim oBF As New BinaryFormatter()
Line 8: Dim oFS As FileStream
Line 9: Dim strPath As String = Path.GetTempPath & "schedule.Bin"
Line 10:
Line 11: Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Source File: D:Hosting4423045htmlplease-godappointmentscheduler.aspx.vb Line: 9
[Code]...
I am using
VB
webbrowser.navigate(link)
in a timer and that sometime ended up with error and sometime the browser shows a blank screen and keep on refreshing and other times it shows an error and the application stop responding.
I have this application that updates information to a database. I had it working but whether I have deleted or changed something accidentally I don't know. This is the error that appears:
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.InvalidCastException: Conversion from string "SBS-resources" to type 'Integer' is not valid. ---> System.FormatException: Input string was not in a correct format.
[code]....
When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
I tried all the properties of the combobox to try if i am able to ONLY allow user to choose one of the collection in the combobox .Maybe by onli allowing to choose but not able user to type into combobox.Or even showing error msg to tell user to only choose the collections..
View 4 RepliesWhen trying to save, build, debug, or change the form.vb im looking at i get this error message[code]...
View 2 RepliesNow, i have 3 text box Fat , Protein , Carbohydrate I have one label and 1 calculate button to calculate the total calories How do i change the following code to perform such task?i) Add total sum of calories from Fat / protein / carbohydrate (No need enter all 3 value)ii) Create Error message on messagebox when value in textbox is character ( currently can't calculate because got error* )
iii) How can i create "Total Entered item" code on button to display on label? I have no idea on this code
BELOW IS MY VB.NET SOURCE CODE Private Sub btnCalories_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalories.Click
[Code]...
The message is "System Update Required"Unable to install or run the application. The application requires that assembly Microsoft.VisualBasic.PowerPacks.Vs Version 9.0.0.0 be installed in the Global Assembly Cache(GAC) First. It is not completely clear to me if this is something that I have to 'include' in my application, or something I have to direct my friend to install in his computer. (Or how he can get it?)
View 13 RepliesI have a visual basic application with a media player built in that requires two .dll files.I wish to have an error message appear when the media player tries to start withought the files instead of a weird crazy confusing one that starts bu defult. is there any code like "if WMV.dll = not in directory than msgbox.show "You are missing the required files" I wish to show this to make it easier to identify by my users.
View 3 Repliesokay so I have a simple code to generate card picks and store them in numbers except no two cards can be the same so my checkIf functions checks it against the current list. Also no four a values can be the same since there are only 4 cards of the same type in a standard deck. Now the problem I am having is that when I run my code I only get two message boxes when I believe I should be getting 30 - (15 a's and 15 b's).[code]
View 12 RepliesAnyway, I figure my code is all messed up, but I still don't understand this error message.Also, s there a website, that I can get the definitions of the error messages that VB throws out?
Sub Main()
'declaring variables
[code].....
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.IO.FileNotFoundException: Could not load file or assembly 'CrystalDecisions.CrystalReports.Engine, Version=12.0.2000.0, Culture=neutral,
[code].....
I have a customer that gets the following error message when running my app. and wondered if anyone can shed any light on what the problem might be...See the end of this message for details on invoking. just-in-time (JIT) debugging instead of this dialog box.
View 8 RepliesI am using try..catch for error handling. I am getting the message displayed as
messagebox.show (ex.tostring)
But it gives very long message.Is it possible just to get only the actual error or I could give my own modified message, based on what ex contains?