I'm trying to have a Message Box be displayed when the user either closes the form, or changes the tab. The Message Box should only be displayed if the data in a dataset has been edited/changed, but hasn't yet been changed.
View 2 RepliesA quick question on caching dataset objects. How can I know if the data is changed in Sql when caching data? I don't want to specify time constraints but used a strategy where data is changed in sql and I have to refresh my cache?
View 1 RepliesMy Scenario is that i have fetch data from one SQL Server table into vb.net DataTable.Now if any record is changed or New Record is saved into SQL Server Table i want to fetch or update only that record into my data table. is it possible.
View 1 RepliesI am having issues understanding why it is that a text box that has been bound to a dataset correctly updates that dataset when the text in the box is manually changed i.e. by changing it using the keyboard but the dataset does not recognise the change when I change it in code.Am I missing something obvious? The text is changed in code when the user clicks on a command button that copies the text from another textbox on the form to this textbox.
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As i mentioned, manually it works fine but when I use the comman button to change the text it does not recognise that any changes have occured.
I want to track changes in an application. So I've made a copy of the main table in that application, and am accessing both tables in the application using two separate datasets.
My plan was to use the HasChanges method of the main DataSet to get changed rows and then insert those into the copy table. When I run the code I get an error:
A first chance exception of type 'System.InvalidCastException' occurred in MyApp.exe
Unable to cast object of type 'MainDataTable' to type 'MainAuditDataTable'.
Here's the code:
If Me.DataSet3.HasChanges Then
' 'look for each row that has changes, not new rows
' 'insert that row into the auditing table
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I have a section of code in which I want to display a messagebox after a form is displayed... as the form loads. me.show messagebox.show If I don't use me.show first, the messagebox appears before the form is displayed. If I do use me.show first, the form appears, but is not always complete before the messagebox appears. Is there an easy way to poll the form to see if it is done displaying without using a timer?
View 14 Repliesi'm trying to display a random messagebox that displays a message associated with a character. the character image displays and the user clicks a button to guess the character if it is correct, one of three messages should randomly appear that is associated with that character (there are 4 characters, so there are 12 possible messages total. 3 for each character) but as it stands now, the picture box on the form displays the character name so the user doesn't have to guess which button to push. i need to remove the name from beneath the picture so only the buttons have the name and the user is forced to guess and i don't have the messages randomly popping up. only a messabebox that says correct i added a message box in the code but i can't figure out how to randomly get the messages associated with the characters to appear?
Imports System.IO
Public Class Form1
Dim currImageIndex As Integer = 0
Dim characterNames As String() = New String() {"Donny", "Jesus", "Lebowski", "Walter"}
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I have an array of info with each element containing a structured variable. Once the array is full of info it is passed to a procedure "DisplayStructure" which I'm trying to get display a MessageBox with the info in it, separating each element on a separate line. I can't get it to display even one element on one line. The structure is called Employee and what comes up in the MessageBox is Employee.Example or Example.Employee, can't remember which.[code]...
View 3 RepliesI am a beginner, working on MS Visual studio 2005. I have made a form which accepts details from a user (name , age, etc.).....what I am trying to achieve is the following:
When the user enters all the details and presses OK button, a new form or a messagebox must open, displaying all the details just entered by the user.
I am running a vb.net win application from windows task scheduler. I would like to show a messagebox from my application in one scenario. How can I accomplish this. Code is getting executed, but messagebox is not getting displayed in my screen.
View 1 RepliesAm writing a VB.Net app written in VS2010. This displays some reports in several forms. (Am using Crystal Reports though this is incidental to the problem). The user needs to be able to check these, then confirm if he wishes to run the update process or abort. My first idea was to ask the user to reply using a messagebox. But of course this is modal, so the user cannot browse through the reports.
I thought of other options but each seems to have problems:
- export the reports as PDFs, then display report in external Adobe Reader Window using System.Diagnostics.Process.Start("AcroRd32.exe", filename).
- create a non-modal message box or equivalent. This loses any concept of program flow, so am unconvinced by this.
How to make it where I highlight a item in a listbox, then press a button, and it goes to the next one down? Also, how do I make a If for if theres no item when it goes +1 then make it display a message box like "End of the list"?
View 6 RepliesWhat im thinking of doing is let the user type in a 16 numeric number of the credit card or debit yet if not numeric or 16 numbers show a message box saying"Must be numeric and 16 numbers"
Do
strInput = InputBox(" Enter Your 16 Debit or Credit Card Number ")
Loop While strInput.Length <> 16
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I use the following connection string and am able to log into SQL 2008 R2 Server.
My.Settings.Item("CustomerConnectionString") = "Data Source=FAROOK-PCSQLEXPRESS;Initial
Catalog= '" & Me.ComboBox1.Text & "'; uid = '" & Me.Login1.Text & "'; pwd = '" &
Me.Password1.Text & "'"
How do I display a messagebox on login failure.
i have 4 text box how can i display a messagebox that will prompt the user if theres any duplicate text on the four Textbox. Main idea: i just want everything that the user typed in each 4 textbox to be unique."i tried coding at the textbox that if the text box is change, that if theres another textbox with the same data i typed a messagebox will prompt. almost does it but, since i added a diaglogresult code that if i click yes the text box with the code will be change to a null object.. but since the other text box are null objects the messagebox will prompt me again..
View 7 RepliesI am having trouble with the DoubleClick event of a ListBox.What I need to have happen is when the user double clicks the package number in the ListBox, all the information will display to a MessageBox.This should include package number, arrival time, and so on.[code]
View 5 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
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I am here by to ask help on enhancing messageboxs. How is the way to Display a picture(like a JPG file) inside a messagebox along with text when a button is clicked?
View 9 RepliesI've created a form with several controls to specify the inputs to my program. They include TextBox, OpenFileDialog, Button and even a user control for numeric input. When the user clicks the 'GO' button, the program begins it work. Opening several files and processing a bunch of numerical data. This could take many minutes/hours with large datasets.
What I've been trying to do is have another window/form open up and send status information to it for the user to view. The info to be displayed is varied and constantly updated as the program crunches the numbers. Many many programs do just this type of activity.
I attempted to create a second form with a huge TextBox thinking I'd just write stuff to it. I called the .show method within the .click of the 'GO' button and of course the form is displayed but control of the program's execution doesn't return until the form is closed. How to I maintain execution and have a second window/form to display status?
In vb.net using Data Reader while selecting an value in combobox should display an selected value record from the database into textbox.
View 4 RepliesFrom my login form, and when a correct Username and Password has been succesfull and I get a messageBox saying "welcome to your System" (Picture Below) and when I press the OK button in that MessageBox, I want to open Form3.do I add code to the Underlined code (below Picture), or Do I write a completley different code after the messageBox code.
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I use datasets to hold rows of vendor data and case data and such.
I would like to be able to regularly refresh the rows in these datasets that have been changed by other users touching this same database.
In the app we update like this:
_adapter.Update(_casetable)
That looks through the dataset for rows I've changed and calls the UPDATE sprocs.
Let's say I know that case # 12345 has been changed. How would I cause a refresh of the dataset for that case - getting new data from the DB?
how do i count the number of rows that are affected when I updated a table, and display the number of affected rows in a message box ??
here is my code for updating the table ...
For Each row As DataGridViewRow In DataGridView1.Rows
req = row.Cells(Column1.Name).Value
If row.Cells("Column1").Value = True Then
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I changed my Username on my computer from i.e. "xxxxxx x xxxxx" to "Dennis"
VB 2008 during a compile gave me the following error: Error reading icon 'C:Usersxxxxxx x xxxxxAppDataRoamingMicrosoftVBExpress9.0VSProjectApplication.ico' -- The system cannot find the path specified.
The file "VSProjectApplication.ico" is in 'C:UsersDennisAppDataRoamingMicrosoftVBExpress9.0'
Somewhere in the VB2008 "configuration" files I believe that I need to manually change the old path to the new path.
I found the old path in the ".suo" file. The ".suo" file is not a text file. How can I edit the .suo file, save it so that it will work?
on my Form I have a DataViewGrid and some textboxes with a save button (they are filled with additional data of the selected row).Save is disabled first, when I change something in the textboxes the save button is enabled.When the user changes a gow in the grid, I want to ask before changing the grid row, if he wants to save (if the button is enabled).I am using RowEnter but this is too late, then the selected row already changed (and my textboxes already got new data)...What event can I use to ask if I should save stuff before the user changes a row?Something like BeforeRowChanging with a chance to cancel changing the row?
View 2 RepliesI have tried googling so much that I have given up trying to look. I am trying to display a dataset in a wpf datagrid. After that I am going to need to display the individual column value in textboxes. I can then change the value in those textboxes and pressing, say, a commit button, to commit the changes to a database. Here's the code I have so far.
Dim con As New SqlConnection
Dim dbConnString As String
Dim ds As New DataSet
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It was written in vb6 and im trying to rewrite it in vb.net. I've completely stripped the program down from all the unneeded fancy addons and now just have the needed code to run it. The program retreives the records, but does not populate these records onto a datagrid.
Heres my Form code (Form1)
Imports ADS_SQL_TEST_VBNET
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
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I think the problem lies within the LoadDataBound() Sub routine, but I can't say for sure since I was unable to fix this myself.
I am making a combobox from my data source. Basically, This is a projects form and the user needs to select the the primary contact which is contrained by the customer id (GETbyCustomerID) set in another field. I have it working... mostly except the combobox only displays the contact ID which is completely useless to the user. I need to know how to display the First and Last name (both are seperate columns in the table).
View 1 RepliesThe situation: I have a small application where i store customers and orders.. In my database i have a tabel called Customers and a tabel called Orders. These 2 dabases are joined on Customer ID - every Order record contain a row with the customer Id.
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I have a Dataset with 2 different tables. What I have to do is to display those tables in a DataGridView.What I have done with a reference is given below.
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