Building A Query In A VB Program?
Jan 4, 2011
I am working on a program. I created a database and used it to create a dataGridView in my program. I clicked the table adapter for the program and tried to create a new query. When I did this, I got the following error messages...Error message-the new command text returns data with schema different from schema of the main query check your query's command text if this is not desired Schema returned by the new query differs from the base query I cannot create a query for the database. What is a base query and what can I do to fix this?
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Dec 12, 2010
I'm using the code below to search in XML files depending on the values entered in the text boxes, problem is I don't know how to combine the search statement with an "AND" when the users enter data in both textboxes. Can you please help me solve this problem? I am using VB.NET (VS 2008). Error "column can't be found is on line "Dim DV As New DataView(dt, "Receiver like " & "'" & C1TrueDBGrid1Donor.Columns(1).Value & "'" & "", Nothing, DataViewRowState.CurrentRows)"
[Code]...
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Mar 16, 2011
I have a listbox which users can select from a list if Towns, I want to be able to build a LINQ query based on the selected items in the list e.g.
[Code]...
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May 22, 2009
I need to build a dynamic linq query with or operators. I have seen PredicateBuilder but that is in C# and my project is in VB. Basically I need to build a WHERE clause similar to this:
Where((this = 1 AND that = 2) OR (this = 1 AND that = 4) OR (this = 2 AND that = 4))
but the problem is the number will have to be determined dynamically at runtime, and added using a loop, like
for each item in myItems
query = query.OR (this = item.a AND this = item.b)
next
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Oct 20, 2011
I have a search function de build.We are using pure ASP.NET w VB.NET We have multiple DropDownLists and we're building a search query with whatever was selected in those DDLs. My question is, how can I handle the blank values (unselected dropdownlist values) with the SQL Query ? I'm using AND operators in the query so if anything is blank it'll fail the search. If the dropdownlist has no selected value, i don't want the value to be part of the search. It would be easy to code with just 2-3 parameters, but we're looking thru at least 10 items and doing a SWITCH CASE or multiple IFs would soon become mayhem.
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Mar 24, 2011
I am creating a mediaplayer / playlist creator tool that basically imports MP3 songs into playlists (grids). I'm looking to add search functionality where the user can search all open playlists (or a subset of the open playlists). A Playlist is basically a collection of AudioFiles, where an AudioFile is a class that holds the filename of the MP3 file and then exposes the tags (Title, Artist, Album, etc) in public properties.
The idea is that the user can search for a certain expression (for example "the"), and that he can then choose whether to search in the title, in the title and artist, in the title or artist, in the title, artist and/or album, etc. However, I'm having a hard time implementing this and also having it kind of dynamic.
At the moment I am simply gathering all the AudioFiles from the open playlists (or from the subset of playlists the user chooses) and then running a simple LINQ query to find those AudioFiles where the Title contains the search text. Then I display the resulting AudioFiles in a new playlist window:
[Code]....
In case the AND / OR distinguishing is too hard, I would be happy to start with just letting it default to 'OR', so that the user can check Title and Album for example. If he would then search for 'a' then all songs that contain 'a' in their title as well as all songs that contain 'a' in their album should be returned. I guess that makes it easier, but I still wouldn't know how to dynamically create the LINQ query.
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Dec 12, 2009
I was looking at making a program which can then build other seperate .exes, is this possible? For example the user types their mail username/password into my program then this builds a seperate one which just connects to their mail with their username/password.
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Apr 5, 2009
Im trying to see if you can make a GUI that can edit the Source code of your progam and then building it as an .exe..Say you have a login program and you wanted to change the password, All you do is go to the "Edit My Account" and go to password and then enter your old password and in the next textbox your new password.Then you would click save and it will ask for a directory and save it as .exe. And when you would start your newly compiled program you can used the program you just entered in.
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Oct 5, 2009
I currently have a windows services application written in vb.net 2008I want to mass build releases/installers that can carry an unique ID.So that each of my client can download an unique copy of the programMy windows services app must be able to access that unique ID.Heres an live scenario:I have 10000 clients, they can login to my website to download my program.Lets say client #10 downloads my program, the program will be able to read a value somehow that will give "10".The program downloaded by client #500 will be able to read the "500" value.The only ideas i can think of are:- Make the installer read the file name of the installation file, and add a registry key depening on part of the file name.
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Jul 14, 2011
given this function:
Public Function Search(ByVal StartIndex As Integer, _
ByVal MaxResults As Integer, _
ByVal AccountNumber As String, _
ByVal LastName As String, _
[Code]....
instead of what I expected:
Select count(*) from remitline where lastname = "smith"
What am I doing wrong building up the where clause? I'm using Castle ActiveRecord 2.1
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Dec 26, 2009
Im building a program that's linked to a ms access database. the function i use to update a row... In order to save a lot of typing i inserted a for loop that uses a directcast function. i did this because i have numerous text boxes that i name tb1, tb2, tb3, tb4...etc and they each correlate with row 1, row 2, row 3, row 4...etc in the database.[code].....
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Oct 2, 2009
I'm just curious to know if there's any way to build my app. from its binary code. I just saw the thread of creating a program builder and got curious.
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Jun 22, 2011
've got a function that takes two parameters (a delegate and an integer) and then creates a LINQ MethodCallExpression, which it uses to gets the results:
Public Delegate Function CompareTwoIntegerFunction(ByVal i1 As Integer, ByVal i2 As Integer) As Boolean
Public Function Test(ByVal pFunc As CompareTwoIntegerFunction, ByVal i1 As Integer, ByVal
[code].....
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Oct 16, 2011
I am building a program that calculates the number of books by points.Ex: 1-3 books read are worth 10 points, 4-6 are worth 15 and > 6 are worth 20. The issue I'm having is getting it to calculate the the first 3 books, the 2nd 3 books and then the > 6.Ex: User inputs 8 books read. It should display 115 in the label.
1. I'm using an If statement (should I be)
2. Could I use a decimal for the > 6?
Ex: intTotalNumberOfBooks = (intTotalNumberOfBooks * intFirst3Books) *#D
I know this is something simple and it's out of VB 101, but it is my very first programming class and my professor uses a copy paste method during class.
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Jan 13, 2012
I have a requirement to construct a Arena simulation model using an entirely separated external VB program, instead of using the build-in VBA programming capabilty. I have some progress on building such program, but not satisfied with the behavior.
Is it possible to create a Model without starting the Arena.exe?If the program halt for any reason (such as termination of debugging) during the model creation steps, the subsequent call to the CreateObject function failed with result like "Cannot create ActiveX/Com objects". This error still occurs even if I manually kill the Arena.exe via the Task Manager. How to avoid this?
-- Current Code --
Try
arenaApp = CType(CreateObject("Arena.Application"), Arena.Application)
arenaModel = arenaApp.Models.Add
[code]....
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Dec 23, 2011
building a program at the moment that changes registry entries to turn on and change, and off proxy settings. This small program is going to be dropped on each persons desktop so they can easily turn on the proxy in work, and turn it off when they take their laptop home.
However, the proxy address changes depending on which company I am at. I would like to be able to make a single program, but have a "hidden" setting to change the proxy and store it in the program, and push a copy of the file out across the network to each machine. I tried to make it so the proxy address can be saved as a string in My.Settings, but it would have to be made as a User setting rather than an application setting to give it read-write access.The only other option I can think of is to hard-code the proxy address into the program, which really isn't ideal
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Oct 18, 2010
I could not figure out the key to installing folders/subfolders/.rtf files during deployment/installation. The key here is to 'add' folders and subfolders to the project in solution explorer, then adding existing item (.text (.rtf files in my case) files) then selecting the .rtf file in solution explorer.go to its properties and under 'Build Action' select 'Content' (very Important!). Then under 'Copy to Output' select 'Copy if newer'!Then in code to access these files you use the following code:
Me.RichTextBoxDisplay.LoadFile(Path.Combine(Application.StartupPath, "KJV BibleOTExodusExodus KJV.rtf"))
Finally after 3 days of research and 2 days at the msdn forum picking peoples minds (smarter than mine) and lots of prayer, I got it!
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Apr 25, 2010
I am building a program that strips out certain keywords from a much larger file. I am using code that .paul. provided in a different post, but I can't get it to work correctly. Here is the code that I am using: [code] Basically, the first match will appear in textbox2, but no other matches appear after that. I put a breakpoint at the For Each loop and checked out the locals. I am showing 2,502 matches for the variable "match." I just now put another breakpoint in there and I can see that it is stepping, but nothing is recorded.In the archive is a file named debout.txt. This file should be used for the testing.
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Jun 24, 2009
I've been trying to create a working keygen for three months and I havn't figured it out. I first inserted two buttons and named one "Generate" and the other "Exit" and then I put in a textbox. After that I put in the code and debugged it every time I pressed the Generate button a 0 just popped up in the textbox. my code is below.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[CODE].....................
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Mar 15, 2011
I am currently building a "program launching application" for personal and home use.Basically all it does, is have a toolbar for example File, Edit, Run, Programs ect....Run will bring down a list of common command prompt buttons which then, once clicked, will load cmd and input said code.
Example
Under run > cmd > IPconfig/all my code is as follows:
Private Sub IPConfigurationDisplayConnectionConfigurationToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles IPConfigurationDisplayConnectionConfigurationToolStripMenuItem.Click
Dim Command As String
Command = "ipconfig /all"
[code]....
I know how to make a progress bar, but.... how do I get it to show progress on opening adobe reader?
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Oct 13, 2010
When i publish my program i choose to let the application check for updates via a website and if their is one update automatically when the program starts. Is their a way were on the main user form i can make it so that the user can change the update site with out me building the program again with the new site. I want to do this becuase the site i use goes down alot so when i changed the update url no one was able to download the update for the new update server.
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Oct 19, 2009
There is a "submit" button and a textbox, when the button is pressed, i want to connect to access database and search for the entered text in the textbox . if true i want to show "okay" a string .
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Jan 23, 2011
I want to convert my MySQL to MSsql using an automated program using vb.net. Do you have any links or parsing engine that could parse Mysql?
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Oct 20, 2010
ok, trying to put an INSERT query into my program, but not sure the exact sytax, i know the query itself, but not the rest of the code to get it working.
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Sep 3, 2010
Microsoft Access queries with somecolumnname = [?] do not show up in the list of Views in the New DataSource Wizard in Visual Studio.
The query works perfectly from within Microsoft Access by just prompting for the values of the parameters.
The columns of the query should populate labels on my form based on the values in a couple textboxes.
What is the "best-practices" way to use parameter queries in my .NET application?
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Nov 18, 2010
I am trying to do a simple query of selecting an ID number from one table and matching it with the ID number in the other table, however the catch is the two tables are stored on two different sql databases.[code]...
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Oct 21, 2011
Trying to figure out the right way to query a MySql database and find a user defined variable from a Textbox.Text property. I'm not sure what to put for the where clause in order to search every cell of every row for a match. I have looked at coalesce and contains, but neither are really making sense to me and I'm not sure if they are my best option. I'm thinking that the query string will look something like this:
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Aug 9, 2010
How do i great dynamic linq query in VB.net?
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Jun 7, 2009
I am just creating an update programme that will update another one of my programmes. I have one folder that has got different layers of sub folders and files at each different level. I have got the following code to do this:
cmdUpdate.Enabled = False
cmdSkipUpdate.Enabled = False
Dim strServer As String
[code]....
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Aug 19, 2010
Here is the code:
Function getData(ByVal id As String)
Dim reader As SqlClient.SqlDataReader
Dim statement As String
[code].....
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