Display A Msgbox If There Are No Matching Records
Aug 12, 2010Below is the code snippet where i would like to display a msgbox if there are no matching records. I always get a NullReferenceException at iRows = ds.Tables
[Code]...
Below is the code snippet where i would like to display a msgbox if there are no matching records. I always get a NullReferenceException at iRows = ds.Tables
[Code]...
I am using Windows XP and Visual Studio 2003 .NET in VB.
I have created a parameter query using data controls on a form. The SQL works when I paste it into MS Access (and set the values to those I type in the input form) it returns 3 records. In the VB form I only ever get the first matching record. By changing the input by sorting in different orders I still only get the first matching record ( a different one). If I alter my input so the first does not match but the second and third do match I get only the second. Why Don't I get the set of three?
<Code>
Part SQL:
'WHERE
' (Houses4Sale.HousesAskingPrice <= ?)
[Code].....
I have a VB2008 Windows Form with a SDF database. The database contains two tables. The following query returns the records in DiskInfo that have a matching DiskNumber in the DataInfo table. How do I get it to return records in DiskInfo that DO NOT having a matching DIskNumber in the DataInfo table?
Dim DiskQuery = From DQ in DiskInfo join DI in DataInfo on DQ.DiskNumber equals DI.DiskNumber Order By DQ.DiskNumber select DQ
am using sql 2005 and vb 2008.i need to compare dates and select matching records betweem a selected date range.say records between 11/13/2010 and 11/20/2010.e.thing is working ok except when it comes to selecting dates between 11/1/2010 and 11/9/2010.this is happening because when am retrieving the dates from database,its being retrieved in the format 11/01/2010 instead of 11/1/2010 and so it reports no records found,and knowing the limits of sql 2005 this is the only way i can retrieve the date. [code]
View 7 RepliesI want to search the records from the textbox and display the records to the datagridview, if there are no records, just display empty on the datagridview.
this is not working:
Dim sqlsearch As String
sqlsearch = "SELECT * FROM setting WHERE mname LIKE '%" & TextBox.Text
[code].....
I was playing with ASP.NET MVC 1.0 a couple of days ago. I started out with a single table DB named 'Contacts', with very simple structure e.g. Title, FullName, SurName, Email, Phone, Address etc.I'm using LINQ as my Model.In my main view I wanted to display a list of alphabets that have matching FullNames starting with that alphabet plus the count of FullNames. Someting similar as shown below:
A - (2)
D - (4)
J - (1)
and so on.One particular thing about the display is that i don't want to display those alphabets that have no names starting with them.I tried a couple of queries but didn't succeed.
For a project i am working on, i am taking bookings. These bookings are stored in a database alongside a users personal details. The personal details are assigned an ID according to the user who booked it. A user can book more than once with different personal details.
My problem is that i want a user to be able to edit a booking. I want a list of all the names that user booked to be listed in a combo box. This is the part i am having trouble with. i am using an access database and using sql statements to pull out the data. This is what i have tried so far:
SELECT [First Name]
FROM PersonalDetails
GROUP BY [First Name], UserID
HAVING (UserID = ?)
If i execute this query in the query editor, it works and shows the two records currently assigned the input id. However, if i try to output this to, for example, a text box, then it remains blank. I am assuming thisis because there is more than one output, but i'm not sure.
I have pulled some records in DataGridView from database. Now I want that when I select some rows from DataGridView and click on command button, ID's of all selected rows should be displayed through message box. By using followng code I am able to display ID but problem is, "When I select multiple rows and click on Button, msgbox shows only the ID of later selected row, I'm using Visual Basic for Windows Form.
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
For i = 1 To DataGridViewIU68E.SelectedRows.Count
[Code].....
I need to ba able to display the results from sql into a MsgBox and have the option Yes/No.
My SQl is : SELECT account FROM Ta Where cost=0.
this will return about 10-15 rows, i need to see te accounts with o cost befor i continue.
I know how to display a message using the msgbox("text","title","msgbox type") but i dont know how to check the result
View 3 RepliesI want to search the records from the textbox and display the records to the datagridview, if there are no records, just display empty on the datagridview.[code]
View 8 RepliesI have a button and i want it to check for a condition to display different msgbox.
Below is my code:
Dim a As String = "";
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
[Code].....
But i got the following error when i clicked on the button.
"Input string was not in a correct format. "
Is there any way to display the full array with delimiters and everything?The code below does not work but it show you a example of hat I want to do.
Code:
Dim apa As String
Dim ar() As String
apa = "1,2,3,4,5,6"
ar = Split(apa, ",")
MsgBox(ar)
I would like my code to search through a listbox looking for "QB". Once found display message then stop. Write now my code continues to search through the listbox after. How can i change the way that i am searching the listbox?[code]....
View 1 RepliesI have this For Next Loop with a Delay that runs but it stops running till I hit OK on the MsgBox. what is the best way to do a task x times with x delay but not wait for MsgBox. [code]...
View 9 RepliesI have the following save function shown below, when called some tables get updated. Before fields are updated specifically to TblOracleNos what I want to do is when the text in TxtOracleNo has been changed and the save function called a MsgBox pops saying "Oracle number has been changed".
Public Sub Save()
Dim conn As SqlConnection = GetDbConnection()
Dim query As String
Dim cmd As New SqlCommand
If TxtNumPats.Text >= "1" Then
[Code] .....
i don't know how to display NO RECORD FOUND in msgbox..
here is my codes
Private Sub btngo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btngo.Click
open_con()
[Code].....
I have an array I know is getting initial values. I need to be able to see it's results visually like a msgbox. That will be the official output.
Sub SaveDestFile()
Dim StaffCode As String
Dim MyRec As String
Dim Duration As String
Dim FlagMe As String
[Code] ....
I'm having trouble with this
[Code]...
This code works fine for colllecting the the data and displaying it in the ListBox1. But then I want to display all the entries that are in the ListBox1 to a TextBox or MsgBox but I'm having trouble.
i have a Dataset command (DELETE FROM TABLE Where Name =@name)On my winform i have a Delete button that it deletes the rows, next i want to display the number of rows deleted to a msgbox, what i get now is 0this is my code:
Me.NetworkErrorsTableAdapter.Del(par)
MsgBox(" " & Me.NetworkErrorsTableAdapter.Del(par).ToString & " records deleted ")
I'm stuck! i'm trying to read a txt file with the data as below:
LEE
JOSH
JOSH
[Code]....
the txt file is updating all the time. So, i like to read this file and then display in msgbox the name that is most duplicated. In this case the MsgBox will show JOSH.
So I want when you click Button1, it displays MsgBox ("Hello"), when you click again, it displays Msgbox("World"). Then it all starts Hello "world hello world" etc.
View 5 RepliesI'm basically reading a memory address of Notepad using a module I got from a example... Then I'm displaying the text value of the memory address in a MsgBox. Everything goes well, I'm able to retrieve the text value and everything, but this happens.Lets say the value of the memory address is "Notepad". When the MsgBox comes up, it comes up a lot of times, displaying it like this...
1st MsgBox displays "N"
2nd MsgBox displays "No"
3rd "Not"
4th "Note"
and so on...
Here's my code, Module first, then Form1 code.
Module1.vb
Module
Module1
Private
Declare
Function
[Code] .....
I have a datagridview and in the _CellValidating event I am checking a cell to make sure it is filled in. If it is not, I want to stop editing, display a msgbox, and highlight the particular cell. Here is my code :
If e.ColumnIndex = 2 Then
If e.FormattedValue = "" Then
If Me.dgvFish.IsCurrentCellDirty Then
MsgBox("Sample Number is a required field.")
[code]....
For some reason, I can't get the cell's backcolor to be filled in.
I'm using VB.net 2005, .net framework 2.0
I'm currently having a form that has a button starting a long process, with feedback into another windows textbox (call frmProcessLog).
I'm using a Background worker to laucnh the process, upgrade the status of the process and display feedback on the frmProcessLog textbox, and to know when the thread process ended up, (from the cancel button, from an error or normal termination).
the main thread process has some msgbox in it, asking questions to the operator (yes/no/cancel).
I've added the msgboxstyle.systemmodal to the msgbox call which works "ok" excpet if the operator decide to ignore the showing message box and click the cancel button on the frmProcessLog form, which is still clickable even though I supplied "systemModal" to the msgbox. this makes the msgbox hidden behind the frmProcesslog form and the process can still continue.
If I close my frmProcessLog form, I will see the previously msgbox behind it and If I end up click one of the button it will end up at an application error because the thread that called it is not existing anymore.
So I would like that the msgbox to be launched from the thread making it as if it was launched from my frmProcessLog window in a modal way.
I have a dBase file named PROBA, with two cells: "VNEV", "KNEV".I would like to see the records back-to-back in a Msgbox.
Imports System.Data
Imports System.Data.Odbc
Public Class FormCount1
Public Sub Recordszm() Handles MyBase.Load
'TODO: This line of code loads data into the 'DataSet1.PROBA' table. You can move, or remove it, as needed.
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if its possible to have a msgbox cleared without having the user do it manually? what would be my best option here?
View 8 RepliesHow do i display all records from access to richtextbox? Now only the last row is being displayed. I need all records in MS access to be displayed. Im using VB 2008 express with MS access 2007.
Private Sub btnRetrieve_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRetrieve.Click
'---provider to be used when working with access database---
[Code]....
Essentially, what I'm trying to do is build a table of data dynamically on a page that is 3 columns wide by however many long.Working off a Classic ASP example, I've gotten as far as trying that, but not all the records display and they still render on the page as rows instead of columns.[code]I'm not overly certain how to do it, and I'm fairly sure it's probably really simple to do on a view page.My other option is to set a finite amount of records to be created and build the table on the page from that, but I'd much rather do it dynamically.I guess also an alternative option would be to use a repeater control? Though I don't know if this is a control that will work with MVC.
View 3 RepliesI know how to display a records to my combobox from my database but right now I am ran out of idea on how I will display a teacher who has a teaching load in elementary and high school.. I have DEPT field which I has either ELEM or HS. What would be the best thing to solve this kind of problem?
I have two option buttons labeled "HS" and "ELEM". I would like that if any of the option button is selected the name of the teachers who are handling elementary ang highschool will appear in the combobox.
On formload I checked the value of the option button and assign either "HS" or "ELEM" like [code]...