populate values from a database(Access) in to vb.net form. after selecting a field from first form , the next form should display all the parameters used in the selected field from the data base. Also if do editing it shppuld be updated in the database.
Public Class Editdetails
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim cn As New System.Data.OleDb.OleDbConnection[code]....
populate values from a database(Access) in to vb.net form. after selecting a field from first form , the next form should display all the parameters used in the selected field from the data base. Also if do editing n press update it shuld be updated in the database.
[Code]...
How can i populate sugessted values from database in textbox in vb.net. i.e, when user press alphabet 'a' in textbox a drop down list should be populated by those values which stats from 'a'.
View 1 RepliesMy current code only selects a single item from a specific field. How do I make it populate the listbox with ALL the items in a field?
Try
conn.ConnectionString = "server=; username=; password= database="
conn.Open()
Dim sqlAdapter As New MySqlDataAdapter
[code]....
I am reading values from a database 0/1 false/true to populate the checkbox .The databse field is 'PPorCollect'. How can i figure out why the checkbox is not populating ?
OpenSQLConnection()
Dim mcommand As New SqlClient.SqlCommand("up_loadOrderID", conn)
mcommand.CommandType = CommandType.StoredProcedure[code]....
I populated a textbox with the value i was reading from the database.....Interesting the value is True/False not 0/1 like i was expecting...so i changed up the above code to the below code with no resolve....
Dim PPorCollect As Integer
PPorCollect = mReader("PPorCollect")
If PPorCollect = False Then[code]...........
Let's say I have 50 cars and I created 6 attributes for each of the 50 cars (therefore 300 total variables and values for those 300 variables). These attributes are created and valued based upon the following structure:
Car1Name = "Dark Red Car"
Car1Color = "Dark Red"
Car1DoorCount = 4
Car1Cost = 10000
Car1Appeal = 10
Car1BoughtStatus = False
Car2Name = "Bright Red Car"
Car2Color = "Bright Red"
Car2DoorCount = 4
Car2Cost = 11000
Car2Appeal = 8
Car2BoughtStatus = True
and 48 others of similar structure/syntax
How do I take a a module with these variables and values and populate them into a listview within a form such as Form1 and ListView1 without continuously going into listview's UI and manually entering the data? The goal is to show the USER a list of 50 cars, their color, door count, cost, appeal, and purchase status.
I am trying to populate a form from a list of values. I am fetching data into a recordset. I have a textbox that displays the date, however, when I try to assign a date value I am getting the error message that I cannot set the textbox value to a textfield. Is there a way to assign the date value to the textbox?
lForm.txtFromDate = dgvRequests.CurrentRow.Cells("leaveStart").Value
I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.
I need to compare what is in the database table with what is in the datagridview, update the history table for records that exist, and then insert new records.
How could I add array values and populate the results in a specified text box?Then repeat for each line after. Then get a final total.
For example:
1 2 3 4 5 (15)-text box
1 2 3 4 5 (15)-text box
2 4 4 3 5 (18)-text box
-----------------------
(48)-text box
I'm using a Datagridview to fetch information from an XML. Each row contains a separate entry. I can read from and append to the XML database, but I want to:
A) Be able to save any edits made in the database to an XML file.
B) Store and fetch a collection of possible variables to populate a list box.
A should be relatively easy, but I don't know if B is. The XML database will contain hex values that can be written to predefined offsets, and each could be any number of bytes long. So one entry in the XML/Datagridview database could read "00,0A,0B,0C", where commas separate available write values, with each possible value being another line in a listbox. When a value is picked from the listbox it will be written to the XML.
I don't want to have to make <ListBoxValue1>, <ListBoxValue1> in the XML for each possible entry, so I'm hoping there's a more efficient way.
If you're interested in what I'm making, it's a hex editor that loads descriptions of offsets from an XML, then loads the values for each offset from a file. Here's a screenshot.
I am trying to populat a treeview with nodes that are the values of a column in a datatable. I have managed to get the correct number of nodes but the text is not displayed next to the nodes, there is just a 3 shape but the other way round and with square corners shown.
The code is below. I would like to have these parent nodes populated on the form load and then (i think this is what i have read) to be quicker i would like to then load the childnodes once a parent node has been selected, as i don't want to load the whole database on form load or when the form is refreshed.
Here is the code with more dtails below:
[Code]...
I'm attempting to add comma delimited values to a combobox. The problem is I do not know if this is the best way to split the values into the combobox. Is there a more cleaner/efficient way to do this?:
Dim toread As String
toread = ini.ReadValue("Schools", "Schools")
Dim textdelimiter As String
textdelimiter = ","
Dim splitout = Split(toread, textdelimiter)
Dim i As Integer
For i = 0 To UBound(splitout)
ComboBox1.Items.Add(splitout(i))
Next
I am using VS2005 vb. I have two textboxes and one grid with two columns. I want to populate the grid values to text box while clicking the exact row?
View 1 RepliesI want to enumerate all of the values within a given registry subkey (for example 'HKLMSoftwareMicrosoftWindowsCurrentVersionRun')
View 4 RepliesI have a gridview as follows
<asp:GridView ID="productListTable" runat="server" DataSourceID="srcProductListPerCustomer" AutoGenerateColumns="False" AlternatingRowStyle-CssClass="tr_dark" HeaderStyle-CssClass="header_req"
[Code]....
And it actually seems to work on first instance (altho im not sure the above is a good way to do it, but the problem is when use the pagination on the gridview I get the error
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
On the line
Dim productId As String = productListTable.DataKeys(i).Value
why I am getting this error and also is there a better way to do it ?
I need to pull from an access database to populate a combobox. Then from there I need to have a second combo box populated depending on the selection in the first box. My thought of an example would be a website that is setup for selecting car make, modle,year...can that be done in VB?
View 1 RepliesI am creating an xml file with LINQ as follows...
Public Sub CreateXml()
Dim db As New MDataContext
Dim Customers = <gallery columns="3" rows="3">
[code]....
Could i mix local values with the ones returned from the LINQ query...Something like the following?
Public Sub CreateXml(ByVal **Col** As String, ByVal **Row** As String)
Dim db As New MDataContext
Dim Customers = <gallery columns="& **Col** &" rows="& **Row** &">
[code]...
I want to populate a combo box but not using a database
e.g. combobox displays
red
white
blue
But want I want is if a person chooses red I want to pass back the number 1 value to a backend database. I'm able to populate a combo box with the colours but not sure how i 'grab' the value to pass back
Dim colours as string[] = new string[] { "red", "white", "blue" }
m_cmbColours.Items.AddRange(colours)
What I want is this
value Colour
1 red
2 white
3 blue
Combobox just displays the colours and when chosen in the combo box I grab the value corresponding to colour chosen.
I've given up on my harder stuff and have simplified it to something else. There are no errors that pop up now but the list box doesn't populate! I took the code from a book and there's a data adapter, data connection, and data set on the form already (they're not named in this code though, since the book didn't say to). When the program opens, the list box has a line of text in it and the list box doesn't fill with the right items.
Private Sub EditStock_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
Dim dsitemlist As New DataSet
Dim itemlistadapter As New OleDbDataAdapter _
("SELECT ItemName FROM Stock", ConnectString)
[Code] .....
And here's what shows in the box.
system.data.dataviewmanagerlistitemtypedescriptor
I'm stuck, can someone teach me on how to populate my listview using database.
View 2 RepliesI need to create a search form where a combobox populates with names then the user clicks a name and the textboxes in the form are filled with the correct data for example txt_Firstname txt_last txt__nameage would all be filled with the right data from access.
I already have the combobox sorted meaning i can successfully see First names in the combo box so now all i need is helping with clicking a name in the combo box and the dataset being populated in the text boxes heres the code used to populate the combo box:
Private Sub Search_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
dbprovider = "PROVIDER = microsoft.jet.OLEDB.4.0;"
[Code]....
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've been working on this for three days now and I can't seem to get my listbox to populate. I'm connecting to an sql database. Where am I going wrong? Dim cmd As New SqlCommand("SELECT DISTINCT natureport FROM rates ORDER BY natureport", conn)
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I am trying to learn how to populate a tree from a database, I did this same thing back in Vb6 and am trying to learnhow to do it in VB.Net, but I am having trouble with the code. From looking on the web I have piced this together, but I think it may be far off. It just jumps out put leaving the tree blank; and it gives no error message. I put in a try error catch and it cannot convert the data to a double, but even if I take this out it does not work. It is stuck at the line with: dr("CustomerID") <> hID I was using this to check for a parent node, I can take it out, but it still does not work; I am afraid that I am be way off here. I am using the Nothwind database.
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how to populate a treeview from a SQL datbase. I have been looking on the web but I have not found a lot and wwhat I did find show some things that, like child nodes that I cannot find. Basically I am pulling orders from the Northwind database and want to have a branch with an order and off this branch the with the ID of the order details. So when the they click on the order node it expands to show the orderdetail ID.
I get the a branch, weiht the code below, with the order IDs but cannot get the child branch.
my code
Public Class Form2
'Dim TreeView1 = New TreeView
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
Using VB.NET I want to display the date in datetimepicker from the database.
Code.
cmd= new sqlcommand("select date from table1", con)
dr = cmd.executereader
while dr.read()
[code]....
But it showing error as specified cast is not valid How to get a value?
I have 3 labels I want to populate with info from my database. I have a SELECT statement that works for only one piece of info but I need it to include the other 2 as well.
I have 3 labels: Current, YTD, and MTD My select statement is working for YTD but I don't know how to write the SELECT statement to include the others.
[Code]...
This is my GET Method to get my data from my DataTable
Private Function GetData() As PagedDataSource
' Declarations
Dim dt As New DataTable
[code].....
Im new to vb.net and would like to know the very basics on how a datagridview works? how does it populate data from the database? what process does vb follow to update this datagridview? I'm trying to get my head around the following terms and need some explaining how they work and how they are linked? if possible, is there a link to a diagram that explains this?
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I have a database in ms access. I am trying to use a listview to populate this database. I have comboboxes and textboxes that populate the listview. I have tried to just make sure that my database will populate with the combo boxes before I try to code it to populate from the listview. I am running into an error while trying to populate this database. The error I am receiving is the following,
Syntax error in INSERT INTO statement.
The error is occurring in the da.update(ds, "TrapDatabase") line.
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim con As New OleDb.OleDbConnection
Dim dbprovider As String
Dim dbsource As String
[Code] .....