How To Have More Than One SQL Statement That Will Control Data Flow
May 12, 2010
I am wondering how to have more than one SQL select statement inside my window formapplication that will control the data flow, as i am a newbie in visual basic.net 2005. This is because I am working on a Alarm Application Notifier which will alert the guard on duty as well as inform him the alarm location. The guard's computer screen will be showing the premises and the button will blink at that location where the alarm is. So if the alarm is at block A for example, the guard screen will show block A button blinking.I have already done the first part but i am STUCK at the rest as to how am i going to seperate the conditions for the 3rd to 4th building .The bottom is for the first building code. The data is from the sql database.
Imports System.Data.SqlClient
Imports System.data
Imports System.Drawing.Image
[code].....
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Aug 10, 2009
I am wondering how to have more than one SQL select statement inside my window form application that will control the data flow, as i am a newbie in visual basic.net 2005. This is because I am working on a Alarm Application Notifier which will alert the guard on duty as well as inform him the alarm location. The guard's computer screen will be showing the premises and the button will blink at that location where the alarm is.So if the alarm is at block A for example, the guard screen will show block A button blinking.
I have already done the first part but i am STUCK at the rest as to how am i going to seperate the conditions for the 3rd to 4th building The bottom is for the first building code. The data is from the sql database.
[Code]...
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Jul 21, 2009
where to find sample system with complete flow, database structure and data flow.. just for reference purpose.. system like inventory, payroll, accounting, billing and etc..
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May 31, 2011
I was going through the example code on FTDI's website. After opening the device and setting the flow control to be RTS/CTS they send and receive data in the following manner:
[Code]....
Basically they set the RTS, DTR, then write data to the device. Is this correct? If I was sending multiple times to the device, do I need to clear the RTS each time? and then set it high again? or do I just set it high each time I send new data? Why are they setting DTR if the flow control is defined as RTS/CTS? As far as best practices go, is this the best way to read and write?
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May 13, 2009
I have a NumericUpDown control with a range of 10-50 and I want to have the selected number be multiplied by an amount of money to create yearly cost. I dont know, however, how to use inputted data from the NumericUpDown control in a statement because I cannot convert it to Integer and I also dont know how to call in the data even if a number is selected.
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Apr 19, 2012
I am very New to Vb.net. We are using fortify software for projects when it is going to LIVE. In that process I got some cross-Site Scripting : persistent Data flow issues.
[Code]...
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Mar 17, 2009
Is there any tool available which can generate data-flow diagrams and entity relationship diagrams directly from VB.NET source code?
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Feb 2, 2009
I have finally figured out how to download a file with background worker and downloader. Now the form does not freeze.. I have only one problem left now... How do I get the progress bar to increment in tandem with the data flow? I have listed my full code below. Towards the bottom where the DoWork() sub resides, I am just a few lines short of this year long goal.
Imports System.IO
Imports System.Net
Imports System.Text
Public Class Form1
[CODE]...
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May 10, 2012
How can I kill the excel.exe process in SSIS during the data flow task when it fails? There could be multiple instances of Excel.exe running from other packages that are perfectly valid so I don't want to loop through all instances killing them.My problem is that during the data flow task the process will sometimes fail due to a sheet that is named incorrectly or missing columns. This keeps an instance of excel.exe running which is now an orphan task eating up resources so it needs to be killed.At the same time there are other SSIS packages running that are accessing their own excel.exe process and aren't having any issues. So how can I kill the orphan excel.exe process without impacting the other excel.exe process?
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Feb 8, 2009
please help me to correct the error "TextBox is a type and cannot be used as an expression" for the following statements..[code]
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Dec 5, 2010
I have done some code so that when you choose a number from the numeriupdown it will look at the if statement and put the age into a category. the thing is the number in the updown doesn't go into the right category for me can you see what the problem is? [Code]
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Dec 5, 2010
I have done some code so that when you choose a number from the numeriupdown it will look at the if statement and put the age into a category. the thing is the number in the updown doesnt go into the right category?
'Assigning Textboxes and Combo Boxes To Memory
lblUsername.Text = Username
strCustomerName = txtCustomerName.Text
intCustomerAge = Val(NumericUpDownAge.Value)
[code]....
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Mar 17, 2011
I created Dataentry forms. In the form there are so many controls like DropDowns and textboxes. I am using Access database. Now I enterd the few records into the controls, and these records are saved into the Database. But now if i enter the any data which i recently saved in the database to the textbox or any other control then the remaining controls should be display the related data.
For example i have 4 controls in my form one is dropdown and 3 are textboxes. If i select the data in the dropdown then the remaining 3 textboxes shows the related data. How can i dispaly the corresponding data to the other controls?
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Jun 28, 2011
Private Sub TimerSaveonemessage_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TimerSaveonemessage.Tick
Dim Checkifsended As String = ""
If Checkifsended <> FixNummber(MessageToTextBox.Text) Then
[code]....
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May 23, 2012
that is a question I have been asking myself for a while.Giving a certain flow of events, can I when handling one of them, stop the next ones to be raised? For example, when collapsing a node which child was selected in a treeview (winform), the events are raised like that:[code]I could stop them by using a class member, but I was wondering whether there was a built-in function or just another way (a more elegant way) to achieve this, by acting directly on the events queue.
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Mar 21, 2010
I have been trying to learn how to program a flow chart and am stumped. I want to know how to get the example code from the book that I got at the library to calculate the outcome. I have been at this for days in my spare time and can't figure it out. I tried to apply the examples to my code and got part of it figured out now I am confused on breaking the code down so that I can assign a room if the age is less than 21. Do I just code it the same but change the greater than less than cymbal? I have attached another photo of the code that I have put in Vb for my forum and came up with it between the example in my book and the examples posted on my post. I am getting errors and don't know why.
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Aug 2, 2011
Is there a way in which a case statement can be constructed to call, activate or triger a button control? If not, is there a way any statement can be created to activate a butt non control?
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May 13, 2009
trying to write a simple app that queries an access DB based on date .. the SQL looks like this and works fine with a date hard wired into the select:
SELECT Terminal_ID, SUM(Transaction_Quantity) AS Total
FROM tblTransaction
WHERE (TransactionType_ID = 3) AND (Transaction_DateTime > #1/1/2009#)
GROUP BY Terminal_ID
On the main form I have a monthcalendar control named 'FromDate' and a DataGridView control that shows the SQL results.
How do I get the user's selected date incorporated into the SQL statement that returns the results in the datagrid?
Something like:
WHERE (TransactionType_ID = 3) AND (Transaction_DateTime > Fromdate)
...but obviously there's much more to it.
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Feb 13, 2011
I have made an app that will check to see if a website is on the 1st, 2nd, 3rd, 4th, and 5th page of google, the websites are in a datagridview. I am using five webbrowser controls but it begins to get slower and slower? As it searches for each website using a for statement. How to improve this code to make it run quicker, or even a better way to go about it.
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Mar 10, 2012
i can't seem to get it the timers flow could anyone teach me how to use it for example the form would show up if the date and time in my computer matches with the time on my database im using vb.net2008 and mysql express for my db can't get it
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Sep 10, 2011
I am wondering(struggling) the following:
I have 5 flowLayoutPanels and 5 PictureBoxes i want to be able to move anyone of the picture boxes over anyone the FLP at run time and have the layout panel add it to FLP.controls.Add()....
I've been at it for Hours and now ill swallow my pride -
I have done the following To get it working, but here i have to manually specify which PixBox intersects with which FLP and i dont want 25 if statements
[code...]
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Dec 15, 2010
I am looking for a way to auto generate a flow chart for my VB Code, are there any tools to get this done?
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Oct 31, 2011
I have a button on a web page that I just need a little help with some extra code. I think I need a TRY, CATCH statement?, this is what I have so far: I have a simple web page that has a button which at the moment when pressed enables the user to add data to a DB table via a stored procedure.Once this button is pressed a pop up message box is displayed to let the user know the data has been passed. The user then needs to press the 'OK' button within this message box which then directs them to the home page of the site. This works fine.
The code for this is here:
Protected Sub btnAddRawData_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddRawData.Click
'database conn, this is linked to the web config file .AppSettings
Using dbconnection As New SqlConnection(ConfigurationManager.AppSettings("dbconnection"))
[code]....
As I don't want the user to enter duplicate records in the database (This could be done by the user navigating back to the page where the btnAddRawData_Click is located and pressing it again.), I have created a UNIQUE INDEX named 'DupRecords' to stop the user from commiting this data more than once that day.When I run the web page now I get the following message in my browser:
Cannot insert duplicate key row in object 'dbo.GasRawData' with unique index 'DupRecords'.The statement has been terminated.The solution I think, is to add a TRY, CATCH statement into the btnAddRawData_Click code.
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Sep 29, 2010
how do you make a statement that sets the focus to the txtPassword control?
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Dec 26, 2009
I have a program with three tabs. On tab one I use a folder browser dialogue and load file names into a listbox. These are usually ".tif" image files but could be other image formats. I save the folder location in a variable. On tab 2 I have a Flow Layout Panel. I need to 1) use that folder location on tab 1 as the source of files to be loaded into the flow layout panel and have it do so when I use the Folder Browser Dialogue; 2) I need to click on these tab2 images (in the Flow Layout Panel) to select them, and to trigger events. Mainly create a list of selected image thumbnails.
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Jun 17, 2010
I have been trying to understand how to make thumbnails that I create from a directory, and place in a flow layout panel, selectable. That is, when someone klicks one of the thumbnails that thumbnail should be selected and, either automatically or by the click of a button, a new window (picture viewer) opens and shows the original picture. This is probably very easy to implement, but I am at a loss for the moment.I've tried to find an answer to this by searching the forums, but nothing good has been found so far.
[Code]...
The above code works perfectly and creates thumbnails from the directory c: emp and whatever subdirectory the user writes in the textbox (textbox2). No problem here, it is how to proceed to the next level that has got me stumped. As stated I want the user to be able to select one of the thumnails to get a better look at it in another window. So in selecting it, the procedure should get the path to the original image, and the rest is magic.
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Oct 1, 2010
im trying to get my from to have a flow panel that shows all open forms and it has to refresh its self when a form open or closes. Ive already kind of done this but im sure theirs a much better way to do it.
The Code im using at the moment is:
Private Sub formcheck_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles formcheck.Tick
Dim formTitles As New Collection
[Code]....
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Apr 21, 2009
I have a main form having a comobox with categories populated in it. for adding new categories I have a button1 on this main form. On button1 click I am creating and showing a new form2 for adding new category. I want this new added category in my main form combobox on closing this new form. I have checked mainform_activated even but it is not fired on close of form2.
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Apr 16, 2012
how to make a flow chart designer? where i can drag n drop modules and create link between them...
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Apr 21, 2009
How to write Technical Documentation for a project flow
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