I have a situation that has puzzled me for weeks. I am running logic that does a bit of back and forth to and from the database for each time it is executed (about 20 times). The problem is that the same code works about half of the time. What could possibly be the reason for the difference in execution performance and how can I better shore that this problem is checked?
View 1 RepliesI have 2 Richtextboxws on the form. I need for each textbox to take up half the form width and full height. also, I need those textboxes to keep the above mentioned proportions even when then the form size is changed on the screen.
View 1 RepliesA problem developed in a program after some changes were performed. It runs the previously good program. Is it possible to get back the good program's code?
View 2 Repliesusing VS2008, targetting framework 3.5I have a rather complex UserConrol which does some of its own rendering.I display this UserControl on a form.Opening that form in the Designer creates an instance of the UserControl in the Designer, which tells me a NullReferenceException is occurring in one of my rendering methods.I have attempted to correct this by making alterations to the UserControl's default constructor, but have not found success.
View 1 Repliesi used v s 2008..i create a windows form application in vb.neti want help in which .........if i exit a sub *check_fill_for_New()* using EXIT SUB then in *bt_Ok_Click* sub not fire a msgbox......but it will also EXIT at half
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I have found this amazing control that does exactly what I need, only problem, its in C#. Does anyone know of a VB version of this code? I've tried using converters, but all of them have failed in successfully converting the project. Maybe one of you guys knows how to convert it?
Anyway, here is the control: [URL]
I am currently working on a project that requires an update within an Access Database. There are photo folders, and the user defines the path name via a dialog box. That path name is stored to a string value, and through OleDBReader, the actual name of the photo (from another column in the database) is stored to another string value. Anyway, I have tried a number of methods to update, and nothing is working, here is my code from the OleDBReader on, and the procedure designed to do the update. (note that TargetID represents the primary key of the access DB.. this is why I pass that value in because I can use the Rows.Find(PK) method.. When I use a simpler updating method, I get an error saying I do not have a valid update command). OK Here is the code:
Dim photoSQL As String = "SELECT * FROM PotentialTarget"
Dim oleDbCommand As OleDbCommand = New OleDbCommand(photoSQL, tableConn)
Dim oleDbDataReader As OleDbDataReader = oleDbCommand.ExecuteReader()
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when calling a webmethod
[WebMethod]
public Profile synchronize(string MID, DeviceUploadData data)
The object DeviceUploadData has many properties, and a few of them are array's. My question is about the array specifically. It loses it's value once it's received on the webmethod end.This is the property inside DeviceUploadData
Private data() As DataObject
Public Property Data() As DataObject()
Get
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So the DataObject is populated with data, then once passed, on the other end, some of the DataObject properties are no longer populated. I haven't included the other properties in this example.
I'm just learning VB and enjoying it, but I have run into a problem with a recent program. I am working with passing values. There is a button on my form that is pressed each time the user "votes" for an option. The problem is I'm declaring my variables in the button press action, then calling my subs/functions.
This seems to be re-declaring my variables each time the button is pressed causing the total counters to fail to increment. I wrote the code for a very basic example of what I am running into in my more complex program.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim intGenericValue As Integer
Call GenericSub(intGenericValue)
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Once again I have hit a brick wall here. I have a combobox in which the user types the server name and then clicks on button 'CONNECT' to populate the next combobox which contains all the databases in that
server. Then after the user selects a database, I have another button that he/she click and I want to retrieve file groups from a specific table. At this point when he/she clicks on that button I get an error: "An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)"
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I'm making a IM LAN Chat, and I don't want to limit it to a specific number of chats that can be open at any given time (By re-producing the forms and setting variables once a chat is open).
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How do programs like antivirus keep track of time passed for the trial period? Eg I want to make a program that expires and stop working in 30 days One way I thought of is to make use of the system time.
View 6 RepliesI've mainly been recording keystrok macros... I created visual basic code that allows the user of a template to hide table gridlines - which works fine. The code to show gridlines does not work if the table has only one row. Here is the code - it is getting "stuck" on the
.LineWidth = wd
LineWidth050pt for a horizontal border, as there isn't one. I don't know how to change the code to not execute the command if a horizontal border line does not exist.
With Selection.tables(1)
With .Borders(wdBorderLeft)
.LineStyle = wdLineStyleSingle
.LineWidth = wdLineWidth050pt
.Color = 5592405
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this is my code:
Dim WB As WebBrowser
WB = GetPage("http://speed.travian.ir/a2b.php?z=" + VillageID.ToString + "&c=" + Type.ToString + "&" + AttackParams)
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how to copy the left half of an image, in my case its the let half of a .jpg of a whale, and "paste" it over the right half of the image. Any help would be great, here is some code that might have something to do with it, i would prefer that i could get an answer that accomplishes this by modifying this code but if not that's cool. picture should go from looking like [] to [[
Dim mb, rb As Bitmap
Dim x, y As Integer
Dim r, g, b As Integer
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What my program does is load a file (password list), then progressively reads each line of text in the file whilst writing each line to a new file. After X amount of lines have been written, it should start writing the lines of text to a new document until the initial password list has been split into X amount of password lists. The problem I have is that after hours of tweaking, all I can get it to do is write either blank ocuments, or write all of the lines to only one file. I really need it to be able to split into multiple files, preferably at runtime rather than loading a whole text document into the program in a textbox or array then writing it to new files.Below is the source:
Imports System
Imports System.Windows.Forms
Imports System.IO
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I want to pass a List of T where T is an object I've created that has about ten properties (strings, dates and integers).The lst passes to the function successfully. I am also passing an New T of the Object (itm as T).I can see all the values (see image below), but because it's generic I cannot seem to retrieve the property values and I cannot figure out how to iterate through the properties of each itm as they are retrieved in the For Each.[code]
View 10 RepliesI am trying to generate CRC32 in my program. Unfortunately it works ~70% of the time. Would that mean that my function doesn't take care of some special case correctly? Can someone give it a quick look and let me know if I did an error while converting C code to vb.net ?
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I am creating an XML web service that passes an array of custom types. In my consuming code I am referencing the code as a web reference which I have given the namespace MYWS. Now in code I am trying to assign the results of my web service call to an array of my type like so..[code]When I do this the complier complains, saying: "Value of 1 dimensional array of my.namespace.MyClass cannot be converted to 1 dimensional array of my. namespace. MYWS.MyClass because my.namespace.MYSW.MyClass is not derived from my.namespace.MyClass"Now I understand the message, the thing is they are the same class. The class is declared in my calling code by the web service references a dll from that project. How do I tell the compiler that these are the same type?
View 1 RepliesI use try catch finally to handle errors in my program. And these work fine when i debug application, but when i install it, error handling does not work?!
View 1 RepliesI've created an SQL Query using the query builder. In the query builder, you can test the query by clicking the button "Execute Query", and entering the desired values in the parameter fields.
My query returns the correct results when I do this, but when I seemingly pass the same values at runtime, I get 0 records returned.The query is designed such that you can pass nulls if you don't wish to filter data by that particular parameter.
SQL Query:
SELECT ID, UPC, Quantity, Manufacturer, Style, Color, Size, Category, DateReceived, Cost, OriginalRetail, Retail, LocationID
FROM Inventory
WHERE (UPC = @UPC OR
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In the query builder "Execute Query" dialog, I enter a value I know that the db contains in the "Size" field, "1/1/1900" & "1/1/2199" in Dates A & B, respectively, and nulls for all other fields. This returns 1 record, which is just as I expected. It works correctly.But when I pass the same values into the method created by the designer, I get 0 records returned. I can't figure out where the problem lies. Even if I enter nulls for all fields other than the dates, it returns 0. This tells me that the dates are causing the problem, but I can't figure out why, because I'm passing strings equivalent to what I entered in the query builder.
I've been looking at accessing shared folders, read and write, via the network without being prompted by the OS for the username and password.
On this forum, and googling, I can find many things about accessing network shares, but none using code which also passes the username and password required.
What I'm basically looking for is to not have to map a drive on the users computer. Then using code, write or read files from a network share and at the same time pass the username / password required for that network share.
I need assistance converting the following C# code which works into VB code. The code detects when a specific type of USB device is connected and disconnected and writes the status to a status strip:
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The idea with this form is to add the futures which is calculated when the button is pushed but I need the list to update every time and show the values each time to which the previous value is added to the new calculation, e.g. of what it should look like in listbox:
Year 1: $1,290.93
Year 2: $2,724.32
Year 3: $4,350.76
etc....
I have been working on this a while and I am at a standstill, I was given a function to clear the form everytime it calculates but I don't know how to implement it, I am new to VB. Here is what I have so far:
Public Class frmFutureValue
Private Sub btnCalculate_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnCalculate.Click
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I used .NET Framework 1.1 in C/S project before. Now I have updated the project to use .NET Framework 3.5 without modifying source code, but I have found that : the Remoted DateTime values can not be converted to the equivalent local time of a remote computer that is in a different time zone. In .NET Framework 1.1, the DateTime values can be converted automatically.
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I don't think the problem lies within the codes but..The last thing I did was use datediff.. and show the result on a label.. and when I wasn't satisfied with the result I changed a few lines, and I noticed it was still the same whenever I run it.I've tried changing/deleting the codes to my forms but whenever I run the program, it still works. I even tried deleting the form and it still works.
View 5 RepliesAim to achieve :I want to change the SourceData of the Pivot table.I want to change it from 'C:[file.xlsx]SheetName'!RangeName to 'SheetName'!RangeName
I have the following implementation :
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At the time of error str has value 'SheetName'!RangeName (This is fine.. )
I am also getting a message box before the exception :
Can not open the source file C:file.xlsx (Isn't that obvious because its in use)
this works in VB as a Macro.
When trying to get this program to filter appointments based on which doctor is selected,the code works fine with a sample database. When I try to use the database I have to, it doesn't show any appointments.
View 5 RepliesIs there a different code that works much better than sendkeys?
View 2 RepliesI'm attempting to create an app which uses a vendor-supplied Web Service. They provided sample code to show how to work with the Web Service, but all the code is in C#.. not a huge deal.I opened one of their demo projects and it compiles fine, works perfectly.
So, I open up MY project, drop in the converted code and... wait for it... ERROR!Here is the working C# code that IS working:
C#
private void DoSomethingWithTheAlarm(G4T.enAlarmAction action) { XML_AlarmClearRequest[] ClearRequest = new XML_AlarmClearRequest[lstAlarms.SelectedItems.Count]; int idx = 0; foreach (ListViewItem lvItem in lstAlarms.SelectedItems) { ClearRequest[idx] = new XML_AlarmClearRequest();
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