Checks For Duplicates Before Insertion?
Jan 16, 2012
Im confused on how to write a code on checking duplicates before insertion on vb.net. I know the sequence on how to do it but its kinda confusing when writing a code.
1.) Create a query that will check if the mobile number already exists on the database
2.) If not, insert the new data
3.) Else, a message will prompt that "You are already registered".
writing this in PHP is kinda easy for me but in vb.net.. , unfortunately, not easy.. Im still a beginner on vb.net.
[Code]...
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Feb 14, 2011
I have a class that needs to check for errors in the data contained in a object.The routines that will check for errors could be implemented in concrete interfaces of supertype IErrorCheck. That way error checks can be discrete and added or removed from the class that requests the error checks.Each IErrorCheck implementation would be programmed against the supertype IErrorCheck (Strategy).But it would be nice not to recompile when checks are added or removed.Is there an accepted procedure for abstracting the error checks all the way out of the program, such as to read the checks from a file?
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May 24, 2010
I would like to take blank secure stock paper and convert it in to a check.
I know you can get magnetic toner and print MICR.
The question is What is the actual font to use or should i get a package and send the data to it to print the check?
Has anybody done it successfully without having to resort to pre-printed checks.
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Nov 22, 2010
Can not resolve this. Two radio buttons data binded inside a group box.
Click one thats not checked. Both un check. Must click again
Possible related situation here [URL]
writitng the my.settings manually.
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Mar 12, 2010
how can i put the insertion key at the first textbox?
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Jul 25, 2011
Been looking at this for a few hours now, is it possible to insert into the FIRST line in a rich text box? I have a simple app that regularly copies a reference file to several PCs but I need to have the success/failure and timestamp visible, so I want to insert into the top line each time - ie. in descending order.
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Jun 4, 2011
i have a table with data definition: [code] My problem is that i can't see the inserted data in my table. [code]
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Apr 11, 2011
When we have code like this:
vb.net
Using connection As New SqlConnection(strConnString)
Using command As New SqlCommand(strQuery, connection)
command.Parameters.AddWithValue("@CuserID", intUserID)
command.Parameters.AddWithValue("@CstartTime", dtStartTime)
[Code]...
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May 12, 2011
I've been trying to learn enough to develop the family tree diagram and making progress.[URL]..It illustrates many of the drawing, saving, re-opening, editing, drag/drop features that the family tree diagram would need, and is a good starting point.
To adapt this for the project, after searching for snippets online, I've tried to add dynamic insertion of a label as a start (eventually, it should be a textbox that the user, in runtime, can enter text into, save, re-open, edit). But, I can't get this to work. No errors display, but I must be doing something wrong.
Here's the label code which I've so far appended at the end:
[Code]...
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Mar 10, 2009
I'm getting this error when I go to insert data into access DB using vb.net 2008 which is specified by the user.
"OleDbException was Unhandled No value given for one or more required parameters "
If I hard code the values it works just fine.
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
[Code].....
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May 28, 2009
I know you can do it with an WMI event or overriding WndProc and looking for the right messages, but i was wondering if there wasn't something hidden in the net framework that makes this task easyer.
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Dec 26, 2011
suppose we have three tables in the Database:
[Code]....
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Aug 24, 2011
I have recently been working on a number of sections of code that deal with the insertion of Nullable types into a database. As I'm sure anyone who has dealt with similar code will be aware of the annoyance of constantly writing conditional logic to deal with the insertion of nulls into a database. I.e.:
MyValue.HasValue ? MyValue.Value : DBNull.Value;
If(MyValue.HasValue, MyValue.Value, DBNull.Value)
Basically I am just wondering why DBNull.Value exists and why Null simply couldn't be used?
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Jan 8, 2012
Why is it that this VB.NET code only works for detecting flash disks?
Select Case m.WParam
Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEARRIVAL
MsgBox("USB Inserted")[code].....
What would be the possible way to detect the insertion and removal of other USB peripherals, such as mouse and keyboard?
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Nov 22, 2006
I am having problem with my FYP that my application is based on the detection of Insertion and Removal of a device. I am aware that this would happen using Win32_VolumeChangeEvent class or WMI. (Please notify me if I am wrong). Kindly solve this problem and send the code for Console Application in VB.NET. Please do not send code in any script language or C#. Also to get the device information.
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Jul 28, 2011
scardgetstatuschange DOES wait(timeout is set INFINITE by -1) for card-insertion after connecting the reader-device to the pc. After a card is being insterted the first time and removed again, it won't wait any longer and returns immediately everytime;
lResult = SCardGetStatusChange(DethContext, -1, rgReaderState(0), 1)
So, scardgetstatuschange CAN work. But why only when i re-attach the cardreader-device to the pc????
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Aug 3, 2010
Actually in our project we create different database using vb form code..so this database is a chance of transferring to other users to use others database. so when we create the database it will insert the database name into the main database. Problem: One user who is accessing MS 2010 ACCESS has created a database and transferred into other PC where MS 2003 access available..when he is going to insert database name into main database which is transferred it is not inserting into main database exception is occured..
[Code]...
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Sep 25, 2009
is there an issue, in [VB2010] for the trouble of the insertion of a transparent swf in an windows form ??
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Mar 1, 2012
How to check data in multiple rows is changed or not?If data is changed in exisiting row or rows, i want to do updation.
If data is added in new row or rows, i want to do insertion.
I don't want to use LINQ.
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Jan 2, 2007
I'm using parameters on a SQL stored procedure to insert a record with data entered on a website form (and on the form I'm using VB.net). As of right now, the form works perfectly; the record is inserted. However, after the user hits the submit button, everything executes and then the page will basically refresh with emtpy values in all the fields. So I want to give the user some type of SUCCESS message, assuring the user the information was successfully entered into the database. So my question is: How can I verify that the record insertion was successful? I want to do this with the ExecuteNonQuery statement, because that's what I'm using.
Code is below:
If Page.IsValid then
Dim MyConn as SQLConnection= New SQLConnection("Blah")
Dim MySQL As SQLCommand
MySQL= New SqlCommand("proc_newWebEntry", MyConn)
MySQL.CommandType = CommandType.StoredProcedure
[Code] .....
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Jun 2, 2011
I have dealt w/ SQL as back-end many times before, but this local CE database is driving me crazy. I have a dataset (CsDbDataSet) with my table (ServiceMonitor) all set up. I have the dataset configured for CRUD and everything looks just peachy there. The problem is that I cannot write directly to the table and have it show up. I don't get any kind of error, but when I run a SELECT statement on the table, I receive no data. Am I missing something?I am using the direct database access methods used herensert Method I am trying to use:
Dim ta As New CsDbDataSetTableAdapters.ServiceMonitorTableAdapter
ta.InsertRecord("Test", Now.ToString, "TestSvc", "TestSvcVer", "TestSvcStat", "TestNote", "TestProgram")
[code].....
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Aug 27, 2010
I know you can do it with an WMI event or overriding WndProc and looking for the right messages, but i was wondering if there wasn't something hidden in the net framework that makes this task easyer.
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Nov 3, 2009
I have a richText box, and wht i want that there is a context menu for Copy , cut and paste.Wht i want that user could select a image and could paste into this rich text box..Please tell me how can i do this.
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May 17, 2012
In a single table i want to save three records in at a time. with a single query. how i can do? can u give a simple example?
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Oct 27, 2009
Update: (Please vote to close) This question is unresolved, and is likely a list view bug.It can be replicated by using the example code from the MSDN link below, and adding this code after the list view initialization code:
myListView.View = View.Details;
myListView.Columns.Add("Column1");
myListView.Groups.Add("group", "group");
[code].....
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Apr 10, 2012
I am using Visual Studio/VB.NET 2008 and have a NumericUpDown control on Windows Form. I am forcing user to use Up/Down buttons to change the value, preventing direct entry of a value. This is accomplished be setting the ReadOnly property to True - so far so good. Is there a way to prevent the Insertion Mark from displaying? The Insertion Mark makes it look like the value can be edited, which is not possible with ReadOnly True.
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Jul 11, 2010
I need a code to notify my application when a device (flash drive, cd, etc.) is inserted and removed.
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Mar 2, 2010
We have some predefined strings that can be inserted into a text box during data entry via a button click. How can we track the cursor insertion point so the inserted code is in the right place if the user clicked somewhere in the middle of the data before clicking the button?
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Jun 22, 2010
In visual studio 2008.i want clear information to work..
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Jan 9, 2012
Why is it that this VB.Net code only works for detecting flash disks? [code] What would be the possible way to detect the insertion and removal of other USB Peripherals such as mouse and keyboard?
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