Populate An Array While Populating A Datatable?
May 5, 2010I want to modify this function to populate an array with each item in the database.
View 3 RepliesI want to modify this function to populate an array with each item in the database.
View 3 RepliesI want to modify this function to populate an array with each item in the database.
I have tried various options, but I just can't get it to work[code]...
I want to modify this function to populate an array with each item in the database.I have tried various options, but I just can't get it to work
Private Function ConnectMe() As DataTable
Dim conn As String = "Server=192.168.0.36;Port=3306;Database=wswc;Uid=r oot;Pwd=Jack"
Dim cmd As String = "SELECT * FROM st_users"
[code]....
Instead of fill, I want to one by one add it to the dataset and also an array?
I have an asp.net application where I have a datatable ("DataTableA") that returns just one column ("ProductID").
I want to read each row of "ProductID", process some business logic, then copy both those columns (ProductID & ProductIDBusinessLogicValue) to DataTableB. This DataTableB is then displayed on the asp.net page.
What would bhe the best way to read each row of DataTableA ?
I am getting array of selected datarows from a datatable.select.I use the commands below to get that array or datarows
Dim foundRows() As DataRow
strExpression =
Here is what I tried.I have looked at examples by MS but they all just write to the screen and I have no interest in that.
For Each rowWork In foundRows
dtWork.Rows.Add(rowWork)
Next[code]....
"LineOfBusiness = 'CPP'"
foundRows = modXchange.pdtWork.Select(strExpression)
Now, I want to place the rows from foundrows into an empty data table.I did what I thought was the obvious but that only returns a bunch of rows with no data
I populate a datatable from a database. The table is sorted by the first column.
Then I add some new rows to the table. After that I sort the table with pgds.Tables(0).DefaultView.Sort = "firstcolumnname"
The new added rows are listed after the originally ordered rows and not in the right order.
I'm making a questback in Windows forms (VB). I've succesfully setup the MySQL-database, and made connection with everything needed. I've also manage to populate a DataTable called tblAlt for the alternatives for the question.Then I try to populate each radiobutton with rows from the DataTable.Here's what I tried:
For Each row In tblAlt.Rows
If tblAlt.Rows.IndexOf(row) = 0 Thenof the table).
[code]....
So i have some data in an 1 dimensional array, is it possible to dump this data into a database?
View 4 RepliesI am writting a vb.net program that I want to read in data from Excel and then populate a multidim array with it.I have been able to import the Excel data into a DataGridView (haven't been able to go directly to an array). Now I am trying to loop through the DataGridView to populate the array.This is were I am having troubles.[code]
View 2 RepliesI have to convert what i put into an input box, and somehow convert that into an array.
My project is to put in some random numbers from an inputbox into a listbox, then somehow converting those numbers into an array and find the median of those numbers. I'm able to do the math, and I'm sure its probably 2 or 3 lines of code
how to populate a 3 column ListView with an array? I'm using this code
For k = 0 To (strArr.Length / 3) - 1
For i = 0 To 2
ThisRow(i) = strArr(i)
Next
[code]....
but I am getting the following output if I were to have the following in my array : the, quick, brown, fox, jumped, over
=================================
| Column1 | Column 2 | Column 3 |
=================================
| the | quick | brown |
| the | quick | brown |
I want it to display:
=================================
| Column1 | Column 2 | Column 3 |
=================================
| the | quick | brown |
| fox | jumped | over |
I am trying to design a little application that allows user to enter daily attendances for 4 weeks.exercise 11, Murachs beginning vb.net) The form consists of a combo box that list the number of weeks, text boxes to enter daily attendances fro mon - fri, a button to save the entries, a button that calculates the average weekly attendance and a button to close the form.
The issue I am having is saving the user entries. I use a 2 dimensional array with 4 rows and 5 columns. Within the click event of the save button I user a for loop to loop through the array and populate each dimension depending on the week selected. Once they are saved I clear the text boxes, set the combo box index to the next position , I.E selecting the next week unless it is week 4 hence the limit has been reached. Finally move the focus to the monday text box.
When I run the code I keep end up with 2 errors depending on how i change the code. The first is that i exceeded the index of the array and the second is that "" cannot be cast to an integer. My code thus far is shown below. I have edited the data so much that I am now just confused.
[Code]...
I'm sick today and cannot think straight but I have to get this done. I have an array: newarray() I need to populate this array if a condition applies as such:
[Code]...
I am trying to build a DataTable to populate a DataGrid in VB.NET. The columns will be the username and then question from an exam. Each row will be the answers by user for each question.
So it would look something like this:
Username | What is your favorite color? | What is your favorite book?
-------------------------------------------------------------------------
Joe Blue The Hobbit
Fred Red The Road
[Code].....
That works great and gives me a table that has the needed columns, but I am stuck as to how and get each users answer and put it under the appropriate column.
I tried adding rows in the same loop, but that just adds all of the answers under the first column.
This is my GET Method to get my data from my DataTable
Private Function GetData() As PagedDataSource
' Declarations
Dim dt As New DataTable
[code].....
I've got two lists, ones a DataTable, the others an array list. I want to populate a CheckBoxList with the contents of the DataTable, and check any entries that exist in the array list:
Heres the DataTable that will populate the checkboxlist with the product column:
index product
1 Prod1
3 Prod2
5 Prod3
[Code]....
I'm trying to populate a List with a column of a DataTable in order to later convert it to a AutoCompleteStringCollection later. Is there a neater way to do it than the "good old" For Each?
Is there a way to use myDataTable.Rows.CopyTo for this task?
How do i populate datatable with listview. . . .i have tried this code but it doesnt give the items that contained in listview to datatable. .
dt.Rows.Add(ListView1.Items("Quantity"), ListView1.Items("Description"), ListView1.Items("Price"), ListView1.Items("Total"))
I'm looping through a zip file trying to add the file name of each file within.Is this the correct method?
Dim ZipNameArray(?)
Using zip As ZipFile = ZipFile.Read(ZipToUnpack)
For Each file In zip
[code].....
Currently I'm trying to fill a 3x3 square with random x's and o's to make a tic tac toegame. Unfortunately the game doesn't seem to output all the x's and o's. Logically, from what I can see, it should be able to but it's not.
Shared Sub twodimension()
Dim tic(2, 2) As String
Dim min As Integer
[code].....
how to go about getting data populated from a data grid view to an array of structures? I have a data grid view with 6 fields and 10 records that match elements in my array. I declared a list of songs based off of my structure Song.
[Code]....
it doesnt like my code:
Dim n As Integer
Dim flag As Boolean
Dim i
[code].....
I made a quick search but couldn't find any help I need to put the values of a checklist box into an array. I've found several solutions on the internet but all of these don't seem to work for integer arrays. This is what I've got so far
" Dim RemoveValues(checklistRemoveBrew.CheckedItems.Count - 1) As Integer
Dim C As Integer
For C = 0 To checklistRemoveBrew.CheckedItems.Count - 1
RemoveValues(C) = checklistRemoveBrew.CheckedItems(C)
Next "
Probably a very dumb question but I have a program whereby I create and populate an in memory datatable, which I then add to a data-set. I then run a couple of updates on the dataset and need to know how to then send these updates down into the in memory datatable :Here is a mock up of the code structure following the creation and population of the table :
[Code]...
There's a thread that i'd read wherein you reply regarding on shortcut on populating a listview with databatable or dataset, but i forgot it. How did you populate a listview with datatable or dataset with just one line.
In datagridview .DataSource how about in listview ?
I have a DataTable that has a hierarchyid data type column pulled from SQL Server. Is it possible to use the column to easily populate a treeview object in Visual Studio 2008?
View 7 RepliesPart 1 of what i want to do is on the Load Event of my form i want to look at an excel worksheet and populate a data table with the data found in the first two columns of the worksheet.
Essentially column 1 is Descriptions and column 2 is pricing
Part 2 of what i need to do is that when a user selects a description from the combo box it populates a text box with the appropriate pricing.
After doing some reading into this all i have seen is some threads on how to use Jet4.0 to link and grab the data but it is my understanding that Jet doesnt work with 64 bit OS.
Nonetheless I need to figure out a way to accomplish my end goal and make it as universal a solution as possible (ie. i do not want it to only run on 64 bit or 32 bit machines)
I want to create a 2 dimensional array and populate it with data from database. I wrote this following code.I made some mistakes here with the arrays.
[Code]...
I am having issues assinging values to a multi-dimensional array.
I am trying to build a 2 col, unlimited row array and populate with data from a data reader.
Dim tblArry(,) As String = {}
If reader.HasRows Then
While reader.Read()
[Code].....
When I use a Jagged Array I can get this to work. The Reader portion is workig just fine, but the coding is just not clean for this problem.
I am new to VB 2008 express (I am a 'C' coder but have played with VB6 before). I am writing a simple program that will use the serial port. What I would like to do is, upon some trigger event, open a form, and depending on the amount of serial ports available, populate this form with an array of checkboxes with each check box corresponding to an available serial port. The user could then choose a port which would then determine the PortName.
View 1 Replies