I am attempting to use the VB.Net Excel COM interop to programmatically change the location of the first horizontal page break on an Excel spreadsheet being generated by the program. Code to do so is as follows:
Dim range As Excel.Range
xlActualWS.Activate()
xlActualWS.PageSetup.PrintArea = "$A$1:$K$68"
[code].....
I have ASP gridview bound to an Entity Data source which works no problem, however when I try to programmatically change a header columns text, it appears to break the styling and will not allow sorting either, below is how I am trapping and changing the Header row column text.
Protected Sub gv1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gv1.RowDataBound
If e.Row.RowType = DataControlRowType.Header Then
'retrieve the values from the userdeftable
e.Row.Cells(6).Text = App.Session.Company.UserDef3
End If
End Sub
In my project, I have a local dataset (XSD) that I am using as local-temporary tables. I am getting a System.InvalidCastException when trying to access the field in one the tables. I believe this is because I my code is (incorrectly) not setting a field's value in a row before trying to access it.My problem is that the exception is breaking in the designer file and not in my code. As a result, I'm having difficulting determining which line of my code reading the field value before it has been set. Is there any way to configure Visual Studio to break in my code instead of in the designer created file?
View 1 Replieslets just go straight to the code:
View 3 RepliesThis may be a debugger issue, but here goes:I have this piece of code:
Private Function Connect() As Boolean
Try
sessionBegun = False[code].....
My intention is to 'convert' the low level exception into something more meaningful, so I throw an exception of my own creation. I want this to bubble up to a place where I can handle it.However what is happening is my debugger breaks and tells me that an exception of type "QuickBooksConnectionException" was thrown.I know that, I just threw it, why are you catching it? From what I've read, this ought to work, and there doesn't appear to be an analogous Java throws keyword, so perhaps it is my debugger.
When I am open Excel through work book I got the below error
Exception from HRESULT: 0x800A03EC
I am posting my code Below
Dim xlApp As New xl.Application
Dim oldCulture As System.Globalization.CultureInfo = System.Threading.Thread.CurrentThread.CurrentCulture
'Initialize Excel
[code]....
Whilst trying to load information from an Excel File I have, I get the following message:
System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC
from this:
Code:
Dim strFileTeam As String
Dim objExcel As Excel.Application
Dim objWorkbook As Excel.Workbook
[code]....
i am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:
[Code]...
Normally, i don't get this error while open form design. But I am ALWAYS get this error, when i worked on my project apx. 30 minutes.
When i get this error, i close my project, and reopen. then this error gone... "view designer" work normally and open my form. I have got 4GM ram,and when i get this error,my used ram is 2.5 gb. I am using VB.net 2008.[code...]
I am working with the office interop and am having trouble inserting page breaks in excel. My code is working fine with the horizontal page break but I also need to set the vertical pagebreak My code is below can someone modify it to make a vertical page break on column "I" this code is making the correct horizontal pagebreak but is still 150 pages long because the vertical pagebreak is not set correctly.
Dim r As Excel.Range = CType(xlWorkSheet.Cells(27, 1), Excel.Range)
r.PageBreak = 1
The Exception is not thrown in the following code in Visual Basic 2005, if sqlserver 2005 is down.[code]...
View 12 RepliesIve got a report which runs but I need to manually set the pg breaks. Its quite a big report and its not always the same length. I need to print columns A to Q. Rows 1 to 5 are headers then I need to count down 45 rows and set pg break and keep counting down 45 rows until the end of the report.
View 1 RepliesI've done a whole lot of grabbing, formatting and relocating of data and stuck it in a RichTextBox. All good there. The formatted info needs to print. Also good. Unfortunately it is supposed to have page breaks at certain points. No biggy, I'll just use vbFormFeed. vbFormFeed does not work with Windows printer Drivers... Great... Also, since it's .NET and not VB6, no Printer object.
My current printing method (PrintDocument) is as such:
Code:
Private Sub prtCheq_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles prtCheq.PrintPage[code]....
I have a log table where i need to insert the query which causes errors in the code. I have a common function "WritetoLog".[code]My Question is from the ex how do i take the query which causes error. eg. If the insert command is giving exception i should get like this SQL Query causes error : Query + ex.Message..SQL Query causes error : Insert into temp("1",'Anitha','TeamLeader',) + Incorrect syntax near ')'
View 2 RepliesI'm working on a status monitoring program for my company and we need to be able to know if a process on a remote machine is hanging due to not responding (that I can do) or if it's thrown an unhandled exception. I've tried a number of things from checking the CPU usage of the process to checking if the process has gone idle. Nothing has really been reliable. Is there anyway to do this? All the programs we'll be monitoring are running on either .NET 3.5 or 4.0.
View 4 RepliesI'm working on an application that contains a "BackgroundWorker", the "BackgroundWorker" worked fine but after I started to change some stuff it gives me an error ("Exception has been thrown by the target of an invocation.")... I used a breakpoint to see where it happens, the exception gets thrown at the "End Sub" line of the BackgroundWorker.I then deleted all the code inside of it and ran it again.I still get the error.
View 12 RepliesWhat is the meaning of this error message?
"Exception has been thrown by the target of an invocation"
Instead of words, here is my code's logic :
while loop
run BGworker01
run BGworker02
...
run BGworker09
application.doEvents
thread.sleep(10)
end while
All the bgWorkers do the same thing (sending some data, only to different locations). When I run this loop with only 1 Background-Worker, it's all fine, but when I add the other bgWorkers i get the mentioned error at the "application.doEvents" part of the loop. I think it also points to another place (highlighted in green) inside one of the bgworker's code :
Dim FileStreamToSend As FileStream = New FileStream(fileToSend, FileMode.Open)
I thought it might be a problem that all bgWorkers are trying to read from the same file together, but when I tried using different file for each bgWorker, the problem persisted.
I want to use mozilla control in my application.. But when i use Webbrowsercontrol i just use
webbrowser.navigate("http://www.google.com")
but this commant is not working with mozilla control ant when we try to navigate to any web address it gives following exception.
Exception has been thrown by the target of an invocation.
I know this is a relatively common error but I am working in an application that allows custom reports to be written using vb.net or C# for scripting. Error handling is very poor and I am not knowledgable enough to add my own (if it is even possible).
My code simply retrieves a value that is stored in a textbox on the report formatted as LastName, FirstName and truncates all characters after the comma. This value LastName is placed in a new textbox on the report. Here is my code:
Sub Detail1_Format
Dim lastNameFirstName As String = ""
Dim lastName As String = ""
[Code]....
The error happens when I use lastNameCommaIndex to set the number of characters in my substring. If I replace it with a number the report is published properly.
I am writing a program that saves quotes for writers to an xml file. Well I save my data to the xml file, but when I go to load the document I get this exception thrown at runtime.
System.Xml.Xsl.XslLoadException was unhandled
LineNumber=2
LinePosition=1
[Code].....
I'm working on a project for school in which a dll is loaded.
The dll that is loaded is a bridge between my program and the Twincat System Manager which forms the bridge between the computer and a PLC via the local network.
I need to read Variables trough this whole chain from the plc to my program.
This is the way I do this:
Public Function adsReadReal(ByVal Variabelenaam As String) As Single
Dim ds = New TwinCAT.Ads.AdsStream(4 * 8) ' new data stream
Dim br = New System.IO.BinaryReader(ds) 'new binary
[Code]....
I am writing a windows service that needs to be running 24/7. It is a pretty simple service that monitors a directory where files are dropped into and processes those files. I need to restart the service if an unhandled exception is thrown.
Is there a way for a service to restart itself in the event of an unhandled exception?
In the following subroutine, will the StreamReader be closed properly when the exception is thrown? Or do I have do something myself to ensure this?
[Code]...
Currently I m working in backgroundworker .but suddenly it begins to throw an exception
Exception has been thrown by the target of an invocation. source:mscorlib
stack trace :at System.RuntimeMethodHandle._InvokeMethodFas
Last night my project worked just fine. I left my system up overnight and came in this morning - my project is still on the screen, so there was no update/reboot or any of that. I added 6 lines of code, and suddenly get Build Failed. I removed those lines of code, and still get Build Failed. I restarted Visual Studio, and still get Build Failed. No Exception is ever thrown and no cause for a failed build is ever given. Output is set to Diagnostic, and it indicates nothing wrong or out of the ordinary - every task completes successfully right up to the end when it says Build Failed.
View 6 RepliesHow can I catch an exception thrown by a control event?I have a control that throws an exception in one of its events and I need to catch it but I don't know how.Consider for example that the text box control throws an exception in its click event. How can I catch such exception?
View 3 RepliesI want to catch the exceptions thrown by the login() function in JIRA's SOAP API. The function login throws 2 exceptions. RemoteAuthenticationException if the user provided an invalid username or password and RemoteException if there was some problem preventing the operation from working. Currently I'm using this code to catch the exception
[Code]...
listA is list of integerdtListB is DataTableI'm checking that if StudentId of ListA doesn't exist in dtListB, then add it to the dtListB.
Dim stidListA, stIdListB As Integer
For Each la In listA
stidListA = la.StudentId
[code].....
I want to force a calling method to implement exception handling.
Java forces a calling method to implement exception handling where it calls another method that thorws an exception.
Does VB.Net have the same mechanism?
I am trying to deserialize an object represented as an array of bytes - but I get a Out of Memory Exception. Whats causing this?
View 13 Replies