In VB.NET I would like to create a complicated data structure with multiple types of data stored in an array like format (see below). I am trying to create a data structure that would look something like this: [Name; xLoc; yLoc; zLoc; [Jagged Array]] Note: Name needs to be dimensioned as a string, xLoc and so forth as integers. The Jagged Array would look like this:
[Code]...
how to execute this SQL Statement
Scenario:
Given Tables T_Data, T_AllDesc, T_System1, T_System2
Given Fields:
T_Data= f_id, f_Desc, f_CreationDate, f_CreationTime, f_System1, f_System2
[Code].....
I am trying to fill a temporary table with one column( a code) with the unique results of three queries of their respective table adapters.I can't figure out how to do it from here.The database is Access 2007 and I have activated the appropriate dataset on the form from which this code executes. The table adapters are part of that dataset.I could try to use the recordset approach, but that means making another connection to the same database.Is that a preferable approach?My purpose in doing this is to build a VB process like the one that works in a VBA Module of this Accessdatabase, partly to help me learn VB2008 and partly to overcome the necessity to keep updating queries used by the module.Code below
[Code].....
I originally developed a simple application software [VB.Net + MS Access] (Lets call this project A) but now I want to include more functionality in it. I have an encryption/ decryption software utility (Lets call this project B ) and a Text to speech generation utility(Lets call this project C) . That is, I want to add Projects B and C to project A. [Such that clicking on the main form of project A calls a form from project B or C as desired].In solution explorer, I right clicked--Add Existing Project--and added both the above mentioned projects 1 by 1. (Added B and C to the solution explorer with the already present A).As the application software's (Project A's) main form is the main form of my project, I want to have a menu option on the main form (Of Project A) so that a user could click on one of the menu options and the main form of my other projects ( Project B or Project C or Encrypt/Decrypt or Voice Generation) should open by him doing so. To this effect, I tried the following:
1. I dragged the form simply from one of the projects (From B or C ) into the folder of my Application Software (Project A).This generated a lot of Build errors and the Voice Generation utility (Prj. C) would not work like this.
2. Tried to reference a dll, however the authors of Projects B and C did not include a dll in their projects.
3. Now I came to know that to call a form residing in another project folder or even another folder within the same project, you have to give a path for the form. HOW DO WE DO THIS?
As you can understand, I cannot copy the entire code of the 3 projects here....I will try attaching my project here though..Here it is: http: rapidshare.co...MY_Prj.zip.html[Dear Administrator: The downloading option on the webpage does not allow files bigger than I mb, thts why I used an external link]As I said, in the application, Project A is TMS.NET ; Project B is EncryptFile and Project is C.I encountered a problem while adding project C [spoken word], so the project contains only projects B and A. I will try to attach project C seperately.That is, TMS contains proj A+B and Speech contains C.
I am combining data from multiple tables into one table for a presentation software. I am doing a select statement and running a loop. Inside that loop I have multiple selects and I build a datatable an enter the data into the main table. There is a ton of records and it takes forever.
'Requisition Demands
InsertStr =
"SELECT COUNT(*) FROM Requisition WHERE (DMD_DT = " & dateVal & ") AND (QTY_REQ > QTY_PEND_CANC + QTY_CANC + QTY_REJT) " & searchvalString
[code].....
I'm having a bit of an issue with this program I have been working on for my class. It's a future values calculator, that takes a single data type, decimal data type and a integer data type does the formula and then spits back out the Future value. What i'm having difficulty with is converting the string over.
Public Class Form1
'Define the Module level variables
Dim FutureValueInteger As Integer
[Code]....
I have a jagged array.
vb
Dim jaggedarray(numColumns)()
Does this accept multiple data types?
I'm trying to get the results of a SELECT SQL query from Data.OleDb.OleDbDataReader.Item Are there any better ways of approaching this?
I am using a structure array with multiple member names with 2 types. My question is can you single out one of the member names and add its total? kinda like this...
HTML Code:
structure structureName
dim a as string
dim b as double
dim c as double
[code].....
What I'm trying to do - VB 2005 express and sql 2005 express editions - Trying to set up just a basic hardware/software inventory program. As is I've got separate tables for computer and software licenses...with ComputerID and LicenseID primary keys respectively...where I'm bumping into walls is that I wanted to be able to link them together with a foreign key, for example the computer record would have a foreign key for LicenseID and when a license would get installed the ID would go in and there'd be a nice pretty link. However I run into scenarios where a computer might not have any software installed...or might have more than 1 software item. Or a single software item may be installed on 1 computer, multiple computers, or nowhere. It possible to have that single foreign key field link to multiple records from the opposite table?
What was originally suggested to me was to have a 3rd table called Installations. It'd have 3 rows...one named InstallationID as the primary key, and 2 foreign key rows named ComputerID and LicenseID that linked to the other tables, so that when a license was installed, a record would be added to the Installations table, and later on when we wanted to see where all a particular license was installed or what licenses a single computer had, the table could be filtered by computer ID or license ID and all matching records could be displayed. When I tried that out though I'm having a heck of a time getting the correct items to display.
Just as a basic test i set up a new form and dragged the tables onto it from the Data Sources window using "Details" view for each of them, so that it set up the table adapters and binding sources and navigator for me. I got rid of the auto-added labels + textboxes on the form and added just a couple new textboxes, 1 linked to the licenseID and one to another row i had in that table for productkey...tested it and it moves through the records fine and the correct data shows up in each box to correspond with the other. now though I'd like to add another control to display each of the ComputerIDs that are linked to the particular license being displayed in the other controls via the foreign keys routing through the Installations table, but I'm not having much luck.
is it possible to have a single report from two different tables? Because I have been reading articles that are saying that it is not possible and a subreport should be implemented? Can anyone clarify this for me?
I've been retrieving the fields that I need for my report with inner join sql statement and setting it as the data source of the report that I had created but it doesn't show up when the crystal report viewer is loaded. I had the correct syntax based on testing on what is retrieved by the statement, the only problem is how should it be shown in a single report.
a checkboxlist control on my page and each item relates to a boolean value column in a flat table on my sql server. I've worked out how to transpire checked listitems into the table ok, but I'm having problems auto populating the checkboxlist with the boolean (selected or not) columns.
View 5 RepliesI'm working on a program that is interacting with a simple Access database. When the form loads there need to be multiple text boxes that are bound to the same table and field in the database, Inventory_Table.Quantity, to display the quantity of the inventory. From there, orders are read into the system adjusting the inventory as necessary.
I need to specify what row these are each supposed to be bound to, because right now it is binding them all to row 0, which makes sense but is not what I want. Is this possible? Heres the code I have to bind currently.
txtTopQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtLegQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtFastenerQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtShortQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtLongQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
txtWheelQuantity.DataBindings.Add(New Binding("Text", myDS, "Inventory_Table.QUANTITY"))
I have a windows forms application with one exe and several dlls(Class libraries) in a single solution. The application uses common data that is used across all the dlls. I would like to load the data when the application is starting up and use the loaded data at various points in the dlls so that I do not have to load the common data again and again. How can I share the data loaded in main EXE across the DLLs?
View 2 RepliesI have a winforms app access a database with 6 tables. Out of 6, I am showing 3 tables on three different tabs on my Form. However, I want to do it using a single binding navigator that will use / change the respective binding source dynamically, depending on the tab that is activated by the user. I have separate binding source for each of the three tables.
View 3 RepliesI'm using a Listview in VirtualMode, so I can 'add' a lot of files almost instantly. A Listview in VirtualMode does not allow sorting, so I need to sort the data myself. The data is stored as a List of Structure (it's faster to load than a List of ListViewItem). The code below works fine, but I need to sort based on multiple variables in the Structure. Code:
View 2 RepliesI am currently having a headache on how to solve this problem that i am facing.here is the situation:I have a combobox and a list box on the main form. The combobox will get the data from the ms access database.In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987
So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown.
[Code]...
I have a vb.net app that uses a table from an ESRI shapefile. The user the datagridview is populated based on a query. Now I need the datagrid to sort on three different fields, as in Street Name => Address Number => Unit. (I can sort on one field)
I've tried to use code samples on the IComparer class but am just not getting there from here. I may be missing something really really simple. (so I attached the code sample I'm using).
My 'workaround idea' is to add a column when the datagridview is populated and concatonate the three fields together. Then I can sort on that new field. I can add the column, but haven't figured out yet how to concatonate the values in the three fields into this new one. And I'm concerned about speed.
I have an Address Book project with a listbox. The listbox is bound to the database via the little arrow pop-up box in the corner of the listbox. I have the DisplayMember set to FirstName, and obviously only display the First Name of the contact in the ListBox. Is there an easy way to change it so that it displays the First and Last names? I can't change the binding because I need it to get the ID of the record selected.Here's the basis of my code...
Private Sub MainForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CompanyDataSet.Contacts' table. You can move,
[code].....
Basically, our users enter values onto a spreadsheet and I have been asked make the spreadsheet output to a CSV file preferably each one completed appears as a single line in the CSV.Upon examining the spreadsheet, I cannot figure out the best way of acheiving this, or if it is easily acheivable in the first place.I have attached an example of the spreadsheet data, to give it some context the spreadsheet records times that carers have visited a client, which can happen many times a day over many days per week, there is also a yes/no for each day on the sleepin.
View 5 RepliesI want to combine two projects into one i.e. image and audio steganography with a single .sln file. How do I connect them? I'm using Visual Studio 2008.
View 2 Replieswith the following code example:
T04Command04 = New SqlCeCommand("Update GameResults Set CN01=@T04Var02 Where Counter=@T04Var03", T04Database01)
T04Command04.Parameters.AddWithValue("@T04Var02", T04N01)
T04Command03.Parameters.Add("@T04Var03", T04ClnRec01)
T04Command04.ExecuteNonQuery()
I am trying to use two different variables in this SqlCeCommand series, to (1) update only a particular record in the database (2) with a particular variable value. However, I get the following error:
"An SqlCeParameter with ParameterName 't04var03' is not contained by this SqlCeParameterCollection."
I am attempting to combine multiple bitmap images into a single graphic object using Drawing.Drawing2D command but am noticing the image quality changes.I tried various combination of these ...
g.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic
g.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
g.PixelOffsetMode = Drawing2D.PixelOffsetMode.HighQuality
g.CompositingQuality = Drawing2D.CompositingQuality.HighQuality
but did not get the "perfect" quality.What I want is one image to be in one region of the graphic object. Another image to be in another region. There is no overlapping of the image regions so essentially I want an source image to be as is in a given region. I noticed an option for "CombineMode" for Drawing2D but cannot figure out if and how to use this to get what I want.
SQL Server has a Data Type of "Float". Visual Studio has a Data Type of "Decimal". In other words, if I have a variable in a VB.Net app that is defined as a "Decimal" ...can I move that value into a SQL Server Data Table column defined as a "Float"?
View 4 RepliesI have been trying for days now how to create a process to the user to easily create a connection to any installed data types they have installed. I have found an example right inside vb2008. I never use this because I code my own connections, but this would be real nice if I could include it or duplicate it.
View 1 RepliesNovice VB user, trying to create a pop up msgbox upon opening a file, whereby the user selects from a list (of available options), the choice then gets entered directly into a cell reference. I have seen this before and know that it's primitive programming but i'm still a learner.
View 1 RepliesI have 5 combo boxes that need to show the same list of items that come from a single dataset table. I have managed to bind the datatable to the combo boxes no problem at all.. but when I run the application and select an item from one of the combo boxes all the others change to the item I selected. After some research I believe that this problem is something to do with using the one datasource so I have tried assigning the dataset datatable to 2 different variables and used them as datasources for 2 of the comboboxes but the same still happens.
A work around to this I can see is to call the same methods and SQL select statements 5 times over to get individual datasources for each combo box but this doing that sounds crazy to me. how I can get around this easily? Code snippet below shows 2 combox boxes and their datasources. I'm using VS2005, .Net 2
ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList
ComboBox1.DataSource = AllergyListDataSet.Tables("ListOfAllergies")
ComboBox1.DisplayMember = "Condition"
[Code]....
if it affects the run time of a program if I were to have multiple data tables as opposed to one data table with all my data in it? I am trying to minimize datagrids and just use code to access table data, in hopes that it will speed up my program. But I am ignorant if multiple tables vs 1 main table will make a difference because there will still be the same amount of overall data present in my program one way or the other....?
View 3 RepliesI'm trying to call a C++ DLL from inside VB.NET and am having difficulty with the data types (I think), I understand VB.NET far more than I do C++...I think my main problem is differing data types and I don't understand enough C++?In C++ the DLL is called (I don't have the source for the DLL which would solve my problem, I only have a sample project written in C++) by this;
_InitSensor = (InitSensor)GetProcAddress(m_hInstLibrary, "InitSensor");
_FreeSensor = (FreeSensor)GetProcAddress(m_hInstLibrary, "FreeSensor");
_ReadTEMPsh10 = (ReadTEMPsh10)GetProcAddress(m_hInstLibrary, "ReadTEMPsh10");
_ReadType=(ReadType)GetProcAddress(m_hInstLibrary,"ReadType");
(Variables Declared Previously in other file like this;)
typedef char* (*InitSensor)(char ICType);
typedef void (*FreeSensor)();
typedef double* (*ReadTEMPsh10)(BYTE n);
typedef double (*ReadType)(BYTE address);
I use Philip's MfRc500.dll for communicating with RFID chips. It contains a function for reading data, which is defined like this:[code]The second parameter in function Mf500PiccRead can returns "16 byte data block", so my long data type is too small. If I use byte() instead of long, then i get ExecutionEngineException Exception.
View 3 RepliesI'm torn between using UniqueIdentifiers(UID) or some other field as my primary key for my new web app. I have two tables. I need to be able to find the UID on one record in Table1 and put that UID in a new record in Table2. I also need to be able to create a brand new UID for the new record in Table2 on the fly.
View 3 Replies