Checking If A Text On A Label Exists In Datagridview
Jun 27, 2010I am adding the text of a label into a datagridview. But before i do the insert, i want to check if the text does not already exist in the datagridview.
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For Next Function For Checking If Label Has Text?
Apr 28, 2009Well, its not text, but a number. I've currently got about 10 labels and right now I'm checking each one of them separately using if statements, but I've been told that there is an easier way using a For statement (I've never really got used to it...) to check all of them without having so many if statements... Currently I'm trying something like this (which, ofcourse, doesn't work and is completely wrong :X)
Dim i(10) As Integer
i(1) = label1.Text
i(2) = label2.Text
[code]....
Checking If A File Exists?
Mar 7, 2012I am trying to write(what I thought would be a simple piece of code. I was wrong.
What I am trying to do is to get an application to check if a file exists, However, I have it wrong as the file obviously does exists, but when I run the application it tells me it does not.
Imports System.IO
Public Class check
Dim checkfile As New FileInfo("C:\HelloWorld")
[Code].....
Checking If Directory Exists
Jun 15, 2011I'm using then next method to check if a directory exists but it seems it doesn't work.
[Code]...
Checking If Same File Name Exists Twice?
Jan 26, 2009im trying to make code to check if a file with the same name exists twice in the same dir one with .dds and one with .veh file extentions and if they do put in a listbox but if only one exists then it puts it in another listbox i have made code to filter .dds in to one listbox and .veh in another but i dont know how to make the "check" if they are both there
this is the code i have to split them at the mo
For Each files In dir
Dim path() As String = files.Split("\")
Dim chunk As Integer = path.Length
[Code]....
but i wanted the Else for the .dds files that dont have the matching .veh file
Checking Whether UserName Already Exists?
Aug 21, 2009I am trying to check whether username entered by user is already exist or not in database. But, I dont know how. The codes are below.
If TextBox3.Text = TextBox4.Text Then
Dim conn As New SqlConnection()
Dim cmd As New SqlCommand()
[Code].....
VS 2005 Checking If A Row Exists?
Dec 2, 2009I think this is a really simple question to answer but I can't find a better solution. Basically I am importing data from an external source and as I go through importing each for I am doing a for loop to see if the row already exists; this is taking a life time and I feel it is a very simple way of doing it. Is there a better way to see if a row already exists using specific columns and key indexes?
View 5 RepliesADO.Net Excel, Checking If A Table Exists?
May 14, 2009I'm using ADO.Net to work with an Excel Document. Essentially, I'm looking up values in a table called "source" and creating a new table called "result" which will be populated with the results of my query.
I have a couple of questions.A) How can I check if a table exists and create a new one if it doesn't? B) Is a table the same as a sheet in Excel?[URL]...
Checking If A File Exists And Then Saving?
May 22, 2012I haven't used System.IO before, and I'm a little stuck.I need to check if a file exists, for example C:Documents and SettingsverraineDesktopSURNAME Firstname v1.docx, if this file exists the filename has to become v2, and so on. Usually there will only be a v1, but in the case that a clients position changes we have to be able to save the new version without overwriting the old one.
How would I be able to do this efficiently? I'm uncertain to say the least. Because, if I manage to find out how to save the file as a different number, that's alright, but if that next number exists as well? I can only think of ways to do this that require a lot of code.
Checking If Check Box Value Exists In Database?
Jan 17, 2012i have a checkbox on a form, which is of type boolean in the database .when the user check the checkbox, before the data enters the database, the program should check if there exists already a "1" on the database for this field.If so the user is not allowed to check the depot.
View 5 RepliesChecking If Image Exists On Server
Jan 19, 2010Completely new to ASP.net
Page Language="vb"
Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082
I want to check on the server for the existence of an image, then if it does exist, display the image wrapped in other code. E.g.
if "/images/name.jpg" exists then
<div><img src="/images/name.jpg"></div>
else
Do nothing.
Seems really simple to me but NOTHING I have tried has worked (compilation errors). I've tried examples using system.io, DIM stuff with 'FileInfo', Set fs. FileInfo examples produce 'not defined' errors, 'Set' says it's outdated and not used anymore and so on.
Checking Outlook Folder Exists
Jan 22, 2010I want to check if an Outlook folder exists, if it doesn't then create it & if it does then carry on with other code. I can create the folder as a sub folder of the Inbox but once it is created I get an error because it is still looking to create when it's already created. I have tried to capture the error but still no joy.
[Code]...
DB/Reporting :: Checking If A Record Exists?
Nov 8, 2011I am having a ton of trouble trying to check if a record exists. I continue to get a data mismatch on my command.ExecuteScalar().
Code:
Protected Sub btnRegister_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnRegister.Click
[code].....
VS 2008 - Checking If Process Exists
Jul 19, 2010I've created the following function and thrown it inside of a timer:
[code]...
It works, but it keeps trying to open media player for each process it looks like. I need to continuously run the function so that Media Player opens when it's closed.how to make sure it opens only once when the process doesn't exist?
VS 2008 Checking If A Drive Exists?
Feb 9, 2011I'm checking is a file exists as follows.
If txtGradeObs.Text = "" Or Dir(txtGradeObs.Text) = "" Then
MsgBox("Specify the Grade job of Obstructions", vbExclamation, MsgBoxTitle)
Exit Sub
End If
I get an error if the drive does not exist - i.e. G: rather than C:. It used to work in VB6. How can I get it to work.
Politely Checking To See If A File Exists Before Downloading
May 11, 2011I'm trying to download files using the Net.WebClient call to DownloadFile
Using client As New Net.WebClient()
[code...]
Is there a polite way I can ask for the file instead of calling DownloadFile, and handling the exception ?
Checking File Exists Using Data Extracted From Spreadsheet
Sep 8, 2009I have been on MSDN about this and searched but it's not quite telling me what I'm after. I've extracted a list of file names from an Excel spreadsheet and want to check whether they all exist in a directory which a user can select in a text box. It feels like I'm nearly there with it but currently my listbox is displaying everything, I want it to just show the files that are missing. I'm a beginner so I'm not exactly sure if I'm even telling it to compare the two things properly, I've tried a couple of ways of checking if a file exists but neither seem to work.[code]
View 1 RepliesUpdate Text In A Label Wiyh Datagridview Event?
Mar 15, 2010I have a datagrid, Records_tablesDataGridView. when i enter values into it's two columns and hit enter i want to update a label text to show how many records are in the records_table.I assumed that i would find an event in the datagridview properties that i would be able to use. so far no luck.
View 4 RepliesLabel Text - When Run The Code Form1 Load Together With Form2, Label.Text Flicker Or Blinking?
May 5, 2011I have question about Label.Text.
When run the code Form1 load together with Form2.On Form2 I have Label1.I need that Label.Text flicker or blinking.
Checking Each Items In Listview Compare To Label?
May 27, 2012I have a listview with checkboxes for each items in the listview. You can see in the listview1_itemcheck event that when I tick and untick for each checkboxes in the listview, it will add the subitems text in the label. Can you please help me with a button event as I would like to know how i can check the subitems in the listview when I add each subitems text in the label?
[code]...
Don't Add Value If Already Exists In Datagridview
Sep 28, 2011I have a datagridview with two columns: name and str.
i have this inside a for loop:
DataGridView1.Rows.Add(namevariable, strvariable)
this adds a row in the datagridview.
sometimes the value of strvariable could be the same of a value that is already in the datagridview in the str column.
when this happens i dont want to add the row.
basically: if the value of strvariable is already in some row of the str column, do not add the row.
Loading Text (strings) From A Database Into A Label.text (so Text From Database Shows Up Into Label)
Apr 4, 2011I have a form that I am loading text (strings) from a database into a label.text (so the text from the database shows up into the label) I have done this code in a class that keeps all my database stuff seperate.
Public Function getQuestions() As List(Of String)
Dim question As New List(Of String)
objConnection.Open()
objReader = objcommand.ExecuteReader
[CODE]...
Within the form that the label is in I have done this code
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text(db.getQuestions().ToArray)
End Sub
I am basically making a quiz, so that when the form loads, question 1 is on there is 4 possible answers. You then press next button and it goes to the next question.
Search A Datagridview Column To See If A Value Exists First?
Jan 22, 2010I am creating a program which searches saved .htm files for the source codes. I get the source code and do manipulation on the code to pull the values I need into a datagridview.
Is there anyway to search a datagridview column to see if a value exists first, so no duplicate rows of data will be added? I was thinking of making access table and linking the datagridview to it, but i'm not sure how to set the database links up with code (other than the gui), and then still search the column so I don't put in duplicate rows.So far, I have only come up with the way to add the data row by row...
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim IMsku As String
Dim IMskuitna As String
[code].....
Label Attributes - One Label The ForeColor, BackColor And Text Of Another One Of 3 Possible Labels?
Mar 24, 2011Is there an effecient way to give one label the ForeColor, BackColor and Text of another one of 3 possible labels? I need to do this frequently for a dozen labels in a windows form.
View 2 RepliesScroll The Text Inside The Label For Anything That Is Longer Than The Label Width?
Apr 5, 2009I am using a label to display a song for an mp3 player. I wanted to scroll the text inside the label for anything that is longer than the label width. I figured out the width of the label and if the width of the text inside the label is longer. But I have no idea how to turn this into subtracting parts/pixels of the text currently displayed and how to append the subtracted parts to the end of the new text.
Sub f1timer2tick()
Dim g As Graphics = f1l2.CreateGraphics
Dim s As SizeF
If f1l2.Text.Length > 19 Then
[code]....
IDE :: Use Sql To See If Record Exists In A MSAccess Database (without A DataGridView)
May 30, 2012I'm updating an app for children I wrote in VB6 to VB2010. It uses a rather extensive MSAccess Database. It works perfectly but I need to update it to utilize better speech technology. I have read a lot about SQL and can't find how it is useful for anything accept business applications that add, delete or update records as long as you hard code in a name. I don't use datagrids and I never display a table. how to do a few things, I can figure the rest out.
In VB6, I had:
Option Explicit
Public db As Database
Public rs As Recordset
Public Reader As Recordset
[Code]....
Declaration Error Error Message For A Label Control That Already Exists?
May 25, 2009I dragged and dropped a label control on my web form. But then whe I go to my VB .net code behind file, if I try and set a property on that label control, I am getting a "Declaration Expected" error message for the label I created.Yet if I do try and explicitly declare my label control, the compiler tells me that the label control is already declared.[code]
View 4 RepliesDataGridView Checking For Errors?
Mar 30, 20101. I can check a DataSet for errors with DataSet.HasErrors and I wonder how to check the same thing for a DataGridView.
2. Coming from MS Access I am not used to batch editing a dataset via a datagridview for instance. Think of a multi user Windows forms application / SQL Server setup. So I wonder if it's ok to just save the data after a row has changed, edited or deleted and not wait till all modification are done and then do a batch update?
Get Cell Value When Checking On Datagridview
Feb 9, 2011get cell value when checking on datagridview vb.net.
View 4 RepliesChange The Text Of A Label Where The Name Of The Label Comes From The Value Of A Variable?
Jan 9, 2012basically i need to change the text of a label where the name of the label comes from the value of a variable.So, for example,
Dim x as String = "lblTarget"
Dim y as String = "Target Text"
In this case the text of "lblTarget" would need to be come "Target Text". Basically, the label that is named the value of variable x would need to take on the text of variable y.
