Know Value Exist In Database?
Aug 8, 2011[code]...
If the code exist in the table only it shows the description
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Code To Check Database Exist In SQL And Message Box Show Database Exist Yes/NO?
Apr 23, 2012I want a Code to check Database exist in SQL and Message Box Show Database Exist Yes/NO?
View 1 RepliesCreate An Application Autoupdate - Check In A Webserver If Exist New Version,if Exist The Software Run Update
Dec 21, 2010I try to find online any example for create an application autoupdate.
When I run my application it check in a webserver if exist new version,if exist the software run update.
Check If Item ID Exist In The Database?
Jan 25, 2009what is the fastest way to check if Item ID exist in the database?
From what i have done, i have an excel file uploaded to datagridview, then each itemID is retrieved line by line, then accessed the database to check if ItemID exists.
Is there a way to retrieve the whole column of itemID and then query it to MSSQL2000, then display the itemIDs that does not exist.
How To Check Data Is Already Exist In Database
Jul 5, 2010how to check the data is already exist in database using vb 6.0Naren
View 1 RepliesCall To The Database And Check If The Serialkey Exist In It?
Jan 25, 2012I have a program to validate the licenses the program call to the data base and check if the serialkey exist in the database this is the code demo :
Try
mysqlconnection3 = New MySqlConnection
mysqlconnection3.ConnectionString = "server=216.172.546.128;Port=3306; user id=reina_velocidad; password=tremendacontrasena;[code]...
Check If Username Already Taken Or Exist On The Access Database?
Mar 29, 2011how i can check if username already taken or exist on the access database using vb2008
View 2 RepliesCheck When Record Exist In Database Sql Server?
Nov 24, 2011I need to check if a record exist in my sql server [code]...
I need to check if in "Br" exist a record for example "123098"
Sql - Unable To INSERT Even If The Record Still Does Not Exist In The Database
Jan 11, 2012I want to insert records in the database but before it inserts, it must first check the database whether the value being inserted already exists. Now my problem is that I am unable to insert into the database even though the value still does not exist.
Here's my code:
Dim check As New SqlCommand
Dim sqlcheck As String = "SELECT SerialNumber FROM EquipmentDetail WHERE SerialNumber = '" & TextBox1.Text & "'"
connection.Open()
[code]....
Asp.net - Extract Words From A String And Verify Whether Or Not They Exist In A Database In VB
Feb 8, 2012I am trying to create a web-method to check whether a string contains a word which is in a list of 'not allowed' words. This list will be updated from time to time.
<System.Web.Services.WebMethod()> _
Public Function checkword(ByVal Id As String) As String
Dim returnValue As String = String.Empty
[Code]...
Something is wrong with this function. It verifies the first word of string. After that it doesn't return anything.
Check Exist Database In SQL And Message Box Show Answer?
Oct 3, 2009how to Check Exist Database in SQL And Message box Show Answer?
View 4 RepliesCheck If Exist In Debug Of Project Database Access
Jan 30, 2012I'm using vb2008 and database ms access.
I want to know if exist in the Debug folder in my project Database access
Inputting Login Info That Doesn't Exist In The Database?
Dec 4, 2009In this code block, the datarow gets the row number of the username that was used to log into the system with, right? And in this code, if there is a username/password that was matched with in the database, it'd place it on the dbUsername/dbPassword variables and compare it with the ones that were inputted by the user.What if I wanted to know if there is none of that username (like, username doesn't exist from the database)? I tried inputting login info that doesn't exist in the database and it resulted into the following error:An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.data.dll
[Code]...
Database - Updatable Resultset And Recordset Exist In Firebird .NET Provider?
Dec 3, 2010I tried Firebird with .NET Provider yesterday. Firebird was sure to beat SQL Compact Edition. I was amazed from it's features and precision. But I felt sad when I wasn't able to find updatable RecordSet/ResultSet features and functions in the .NET provider. FBResultSet doesn't contains anything, no rows addition, creation, modification, nothing. Anybody knows if this feature exists in Ado .Net provider of Firebird because there's no documentation.I would like to receive help because I am waiting to integrate Firebird in my freeware application.Also, if there's are replacement functions for implementing updatable RecordSet, ResultSet.
View 1 RepliesCommitting Information From A Form To A Database And Firstname & Surname To Checklistbox If Dont Exist?
Nov 2, 2010I have a checked listbox which is populated with names(firstname & Surname), I also have a form that has been designed (layoutwise but with no code) to be populated with personal info such as name address,postcode,email address, sql database defined in the program that has a table called members that has the same column headings as the members form.
What i am trying to figure out is how i can commit personal information on my form to that database and copy the firstname and surname from that form to the checklist box if they dont exist? how do i go about this codewise?
Namespace Of "system.runtime.caching" Does Not Exist But In Object Explorer And Microsof Exist?
Nov 25, 2010namespace of "system.runtime.caching" does not exist but in object explorer and microsof exist.i use microsoft visual studio 2010 and .net framework 4.0.i also cant use this name space(System.IO.MemoryMappedFiles & System.Runtime.Caching.MemoryCache)
any body know what is the problem. i want my program after doing something (opening a file or any thing that can do something my program use more memory.)use memory like startup run.
Rich Text Box That Does Not Exist Yet In A Tab That Does Not Exist?
Jan 16, 2011Here's my code:
Option Infer Off
Option Explicit On
Option Strict On
Public Class Form1
Public Sub NewToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewToolStripMenuItem.Click
[Code]...
Button That Determine If File Exist And If That File Exist Then Show A Messagebox?
Sep 16, 2009I have Requests for VB(2005) very very important for my selly project!i need a button that determine if file exist and if that file exist then show a messagebox!and if not show messagebox!.
View 2 RepliesHow To Check The Exist Value
Jan 17, 2009Using VB.Net and Sql Server I want to check the user Entry Value.The User is entering the code in the textbox, before saving to the table, i want to check whethere code is already exist in the table or not.
Tried Code
cmd = New SqlCommand("Select code from table where code = '" & textbox1.Text & "' ", Con)
dr = cmd.ExecuteReader()
While dr.Read()
End While
If value is exist, then message to the user "Already Exist" other wise save to the table.
Id Number Already Exist
Jan 15, 2012i am new to VB.net. just want to check an id number in my textbox if its aldready existed in my database. this is my condition: if textbox1.text = ds.tables("employees").row(0).item("id") then msgbox("ID already exist") end if
View 9 RepliesSays File Does Not Exist When It Does?
Jun 11, 2011I feel quite silly posting this as I know my way around C++ decently and am writing an application in VB however I am getting quite frustrated with this problem.
Dim FileNo As Integer
FileNo = FreeFile()
Dim FILE_NAME As String = "C: est.txt"
[Code].....
When executing the above code it says at the FileOpen operation that the document does not exist or the relative path may not be right... I have looked in many place over the internet and even used the same examples from the Microsoft website however I get the same error.
Tell If Something Doesn't Exist?
Jul 16, 2010I want the oppisite of
If My.Computer.FileSystem.FileExists() Then
end if
.net - Get XmlItem.Value Even If Element Does Not Exist?
Mar 19, 2011I am starting out with xml and vb.net here, my xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<Steps>
<X cmd="Message">
<Message>Hello World</Message>
[code]....
it works if all the elements are found (< Message > and < Title >).. but if for example the element "< Title >" is not found I get an error by trying to get the innerText.Is there a way to ignore these errors, I just want to receive an empty value and not any errors.
.net - IO.FileNotFoundException But File Should Exist?
Aug 4, 2011I'm getting a suprising FileNotFoundException although i'm sure that the file exists.I simply wanted to add Logfiles(IO.FileInfo) as attachments to an email, therefore i tried to check the length of every file to detect if they must be added/zipped.This works fine if these files already exist. But if i've created them in this run, i get above exception when i try to check the length. It's oddly enough that i can write into these "not existing" files(actually FileInfo.Exists returns false) without a problem one line before.
Here is some code...
Creating one of the files in the constructor of a class named Log:
Me.LogFile = New IO.FileInfo(infoLogPath)
If Not LogFile.Exists() Then
'tried to use `Using` on the Stream but that doesn't change anything'
[code]....
Can Access Variables That Don't Exist Yet
Feb 1, 2012Basically I just want to use
tile1.backcolor = colors.while (just an example)
however tile1 is only created WHEN the form loads, and it will not let me compile it becuase it's saying it doesn't exist
Check If ANY Folders Exist?
Nov 17, 2009I want to check inside a dir if any folder exists. Every way I found is to check for a specific folder with name as string. I want something like
folderExists = My.Computer.FileSystem.DirectoryExists("C:TestDirectory*")
Check If File Exist On The Web?
Jun 21, 2007how do i verify a file like a image or html exist on the web?
View 6 RepliesCheck If Ftp Directories Exist?
Nov 18, 2009i am having a problem in writing the code that checks whether a directory exists or not in FTP using vb.net..
View 3 RepliesCheck Regedit If Key Exist?
Jun 21, 2010I had it working at one point now it does not want to work. Im checking the registry for a subkey and I know it exists but vb is telling me it doesnt, which is driving me up the wall, this is what I got[code]...
View 1 RepliesChecking Record Already Exist Or Not?
Jun 4, 2011My tables are PURCHASE and SALES...In PURCHASE table, fields are CODE(primary key), PRICE, DATE, TOTAL, QTY...when I'm entering datas in form and when i click submit, the datas stored... but when i enter same DATA(CODE), it is showing error...i don't want to show the DEFAULT ERROR message...so, i want to search whether the CODE is already in database or not...i.e When i click SUBMIT button, 1st it has to search whether the CODE is already PRESENT in table or not. if it is not there, DATAS have to be stored. otherwise, it has to DISPLAY MESSAGE BOX.
View 4 Replies