Editing Databases After They've Been Added To The Project -VB 2008
May 12, 2010
Not sure if I'm posting this in the right area, but here goes anyway. I've been working with sql databases for practice, but can't seem to get around one thing; after I add it as a data source, I can't go back and add tables.
I start off by going through the project, then add item, choose the service-based database, and go from there. I add the tables, then go in and add it as a data source.
After I've added it as a data source, I can go back into the .mdf form and add lines and edit properties, but it wont update in the data sources. So, I can't add it to the form.
I have a DGV that is designer generated. I can create a row perfectly fine, and I can edit rows perfectly fine. However, if I try to edit a row that I have just added and saved, i get a concurrency error. As you can see in the code below, I perform some "injection" of information into the rows before they are pushed back to the database.
System.Data.DBConcurrencyException was unhandled Message=Concurrency violation: the UpdateCommand affected 0 of the expected 1 records. RowCount=1
In the project I'm working on I've been using some gif images to define one or more texture brushes. I have the images in a folder and I know how to define the texture brushes as follows.
[Code]...
Let's say I add the images as image files to my application using "Add Existing Item". Is there a way I can define the texture brushes with the images that have been added to the solution in that way and if so could you show me the exact code.
My problem is with Splash screen I added it to my project but after running that project it displays forever until I clicked on my main forum. please help me how to give a particular time to splash screen i.e., 2 seconds.
I have a dilemma. The program I"m trying to complete is one VB project with three (3) forms. The first form will act as a menu dialog box. The other two forms will have a dataset (database) on each form. The first form will have a button when clicked it will pull up form 2 and the second button when clicked will bring up form 3. What I add the dataset to form 2 everything is fine. I can see my tableadapter, dataset and so on. Now, when I add the second dataset (database) to form 3, I loose my, dataset and so on. It doesn't appear on any of the two forms (in designer)tableadapter.
I want to be able to use the core frotz library (dll) in a different project (no WPF front end). The dll needs to accept an entire string command as the input, and produce the entire output as a string. Produce this dll and the source of the class showing me how you did it.
I have written a program in VB6 which i have subsequently put into a dll so i can write a VB.Net front end.I have added the dll to the .net project and tried calling it but it is throwing up a security exception.Imports Sbank_Dll_v2
Class Page1 Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
i added a specialized stringdictionary to my project. i can save to it, + on form_closed it has the correct count, but when i reload my project the stringdictionary is always nothing.i read somewhere on the internet that i need to make the setting serialize as binary, but i can't see how i should do that? heres the Settings.Designer.vb file. where should i specify serialize as binary?
I have a very simple class that crashes the VB.NET IDE when I added this list. Granted this is a list with 10,000 items but it crashes when I added it to the project. When I delete it with a text editor outside the project does not crash. I have not installed SP1 based on the comments not sure if this is a know problem or not. I can post the project its fairly small as its just text.
Private Shared ReadOnly _mdmCodes As List(Of [String]) = New List(Of String)() From { _ "AAAE-24422", _ "AAFP-02872", _ "AAGG-25572", _ "AAGN-16807", _..........
I've created a database in Access 2007 and connected it to Visual Basic 2008. My database have tables Coachee and Coach. Details of Coachee are displayed in one form and there's a button that when clicked will show details of the Coach of that particular Coachee in a another form. If the Coach is not in database, user will be prompt to insert a new Coach record. Problem is, when saved, the newly inserted record will not be displayed and i have to exit and rerun the program, only then the record will be displayed.
i have created a batch file and have added it to the project using add items. Basically what i am aiming at is to execute this file on a button click action. I am using System.Diagnostics.Process.Start("hello.bat") command to run this file i have changed the build action to resource for this batch file. But when i run this program, it is not able to locate the batch file. I am required to give a relative path as the path my vary from machine to machine. how can i make this file accessable using a relative path?
For reasons that are beyond my control, I have three Projects. Projects A and B reference project C. Project A references project B so that it can open a large form in project B. I now need to open that large form from project C, but VB won't allow me to add a reference from C to B because that would create a circular dependency. I found a way around it, though. I created a Timer in A, and when I opened C from A, I passed in that timer. When the user performs a certain action, I enable the Timer from A, and this causes C to open B for me.
I am making a program that will take your initial balance of your checking account and then you can enter your checks, deposits and withdrawls into a database. Then The option will be given to return a report of deposits, withdrawls, etc. Well, I am having the problem with creating a database I can open when the program runs, first time to get the initial balance, and after to tell current balance. Then, I need to just keep on adding the new checks, deposits, withdrawls to the database everytime the person uses it. So, say I used it and put in 5 checks and then a week later I use it and put another 5 in. I want to be able to give a report of all the checks that have been inputed (this example is 10) back out to the user. So, essentially my question is, I guess, how would I create a database in VB 2008 that I can keep adding to it everytime it gets used?
I'm relativity new to VB programing and was working on implementing a database into my current project. However last night I was trying to add one and the program had encountered some error while I was trying to add a database which I accidentally closed without reading, at which point i promptly restarted the program to find this error whenever I try to open/edit the database.This leads me to believe that the error had stated that it was disabling something on me, and perhaps some way to re-enable it. I cant seem to recreate the error on my other system so i have no idea what to do.
I am often asked to create a very simple database front-end for friends or family, and the structure of the database (and application) is usually very similar.Right now I am always creating a class that handles all database interactions with some shared functions. For example, there's a function to run a general query and return a table, a function to save/load various items (depending on the application of course). The point is: the code is nearly always the same except for some slight variations.
Receive 'ConfigurationManager' is not a member of 'Configuration' in VS2008.I read all of the topics in the forum about this error Tried adding areference to System.Configuration.dll to the project and an "Imports System.Configuration" to the vb file.Still get an error
I have a program that adds controls on the fly to an auto-scroll panel. When the panel is scrolled (viewing the bottom of the panel for example) and a control is added, it looks like it is added assuming the top left corner of the panel is still at 0,0 when in fact it may be 0,500. To see what I am talking about, create an empty "Windows Forms Application" project and insert the below code into it.
Friend WithEvents Panel1 As System.Windows.Forms.Panel Friend WithEvents btnAdd As System.Windows.Forms.Button Dim ButtonCount As Integer
is there a possible way, without using Invoke, to call lame.dll inside a .net project? Attaching it has a resource? I keep getting an error that lame.dll can't be added to the project, I guess thats because it's built in c++.
i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
im trying to edit an existing excel file. some cells were merged but after saving the file, all merged cells were unmerged again. Here's my code
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Dim xlApp As Excel.Application Dim xlWorkBook As Excel.Workbook Dim xlWorkSheet As Excel.Worksheet
Using vs2008 9.0.30729.1 SP. Inserting a new record works but editing a record doesn't. Tried databindingsource but no joy as well.
Private Sub Gr1A_CheckedChanged_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Gr1D.CheckedChanged, Gr1C.CheckedChanged, Gr1B.CheckedChanged, Gr1A.CheckedChanged sAns1 = "" If Gr1A.Checked = True Then sAns1 = "A" ElseIf Gr1B.Checked = True Then [Code] ......
I have a datagridview, 3 textboxes, 1 NumericUpDown and a button.What I want is that when the user clicks the button, the current row that is selected in the datagridview will change to the values in the textboxes and NumericUpDown.
It gets some links in a listbox, And i had to create a new ListBox for because i only want to keep some items, So i got this.[code]But i had to do a new listbox for it, I dont mind that, But the problem is, It creates duplicates, I've tried making it delete the item from the first listbox after it was added to the new listbox, But it is not edible during the process structure so i thought i could get some help here because im getting so many Duplicates of 1 item.
