I have a listview which contains information. This information is retrived from database, 'till now ok. The problem is: I must update the existing items on listview and insert the new ones.
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I tried this code to insert all the items from ListView to DBaccess but it showed mistake in the line of SQL (red line). The message of mistake: operator '&' is not defined for types 'string' and 'system.Windows.Forms.ListViewItem.ListViewSubItem
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I am using visual basic 2008 and i have a listview which have 3 column like ProductCode,ProductName and ProductPrice and also a datagridview columns like ProductCode, ProductName and Product Price and a button control named Add Product. Now i want to insert Listview items value in Datagridview with the same sequence how does it. how to insert items from listview to Datagridview in the same order.
View 1 Repliesright now i'm trying to google some related article about LINQ to better understand it. But I came across with this issue been googling to find some answer but I didn't get lucky so here my problem.
For Each lvItem As ListViewItem In lv_orderlist.Items
passSQL = "INSERT INTO t_selling_history (f_product_id_fk, f_qty, f_qty, f_user_id_fk, f_created_dt, f_trans_status)" _
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I have a program that is reading and writing to certain memory addresses to a particular application exe...
So I have a listview control with 4 columns and X rows
| Name | Address | Type | Value |
Name: Is just an identifier so the user knows what it is.Address: Is a specific memory address (eg 0058AFA0).Type: Type of value stored in the address (eg, 4 Bytes, Float).Value: Value to store in the address.Im looking for a way to go through each row, take the address and use this to read the value at that address and then update the value on that row
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I have a textbox with exisitng text into which I'd like to paste copied strings. My problem is that when I paste (Clipboard.GetText().Trim), the existing text disappears.[code]...
View 11 RepliesHow can I add a form from one project into a new project, I dont want all the code just the form layout.My form has alot of textboxes and labels and I dont want to have to recreate it. I see the insert from existing item but not sure how to get just design and layout?I am going from 2005 to 2008 express if that makes a difference
View 1 Replieshow can I insert text into an existing string? I am trying to interpret a solution in an earlier post "How do I insert test into a textbox in the middl of existing text"
solution given was int insertionlocation = 4;string newText = "text to insert";if (textBox1.Text.Length < insertionlocation) textBox1.Text = textBox1.Text.Substring(0, insertionlocation) + newText + textBox1.Text.Substring(insertionlocation); else textBox1.Text = textBox1.Text + newText;
I must determine both how and where I need to implement this solution.What follows is my work in progress. Keep in mind things are added and deleted as I work with it saving a user entry to a file
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i have a listview box full of items, image below:
when i click a button i would like a msgbox to pop up displaying how many are alive.
How would i do this ?
Also how would i remove all items that status is "Dead"
how to insert a row into an excel file via vb.net?
I am familiar on how to do this inside the spreadsheet using vba - but not certain how to accomplish this within vb.Net.
I have a gridview that is set to a sql datasource, it is generating the columns automatically. If I add a column to the table it is referencing, it will draw that column and display it, but it does not update the insert/update commands to include the new column. Is there any way have it rebuild those commands automatically?
View 1 Repliesi made a media player program and i am having many problems! the main issue is that i have a listview that displays music playlist, how can i get it to navigate to the next item after the clicked one is over that way users don't have to click on the next one to continue their playlist?
View 14 RepliesHow can I save ALL of the items in a listview, items that were added by the user? I tried application Settings and tried creating a settings file but there is not a settings option for listview items.
View 8 RepliesI have a datagridview i use to load alot of klients into a combobox. The values of the datagridview is a connection to a MySQL db.
What it's suppose to do, is to: When clicking the combobox, it should make a list from the datagridview, getting all the names from the klients.
My problem is that it gets dublicated, and will use to much memory at a moment.
I've tryed to check if the item it was about to add allready existed in the datagridview, if it was, it shoudn't add it again, however my code failed, and I'm having huge CPU and RAM useage when running this problem for more than 30mins.
My code:
Private Sub loadCustomers()
SQL = "SELECT * FROM kunder;"
Try
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The code above is only checking for dublicated in the combobox, And I want the code to also check for dublicated items in the datagridview.
Or a way to clear the datagridview right after the items are inserted into the combobox?
How to remove already existing items in the checkedlistbox?
View 16 RepliesI have a gridview in which when I click edit, update, and cancel button comes. I have a variable named status. If status=false then update should change to insert and if status=true then update should be update itself.
<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit" Text="Edit">
</asp:LinkButton>
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im trying to make the listview sort the listview items by column (whichever column was clicked, sort the list based on that column)
in vb6 it was done by:
Private Sub ListView1_ColumnClick(ByVal ColumnHeader As MSComctlLib.ColumnHeader)
Static olditem&
With ListView1
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Im working on a prog for my work. however, im stuck. I come to a spot where i need the prog to copy a sample table to an existing database. we can either simply copy the sample table, or as a last resort, create a new one from scratch.
View 6 RepliesI am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields:
QuestionNumber (unique integer key)
QuestionText
QuestionType
In my SQL Server database I created a Table called "QUESTION" with the same fields.
QuestionNumber is defined as integer unique key, auto increment
Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1).
How do i have to change my database setup, that the original QuestionNumbers are copied into the database?
I have this piece of code which picks the data in an excel file. At the moment i have the data into the dt table. how do i write the data in dt to FECHO_UNICRE table at the UTLT.accdb database? I want to fill the table just after deleting the existing records.
Octavio
Private Sub Unicre_Calculos_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'Try
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I want to insert existing tables in new table stock by selecting from date and to date ..I tried this
cmd = New SqlCommand("INSERT INTO Stock (OpeningStockdate,Productcode,Openingstock,Despatch,Receipt,ClosingStock) (SELECT A.OpeningStockdate as OpeningStockdate, A.PC as Productcode,MAX(A.Openstock) AS Openingstock ,SUM(C.Qty) AS Despatch,SUM(B.Qty)
AS Receipt,MAX(Openstock) + ISNULL(SUM(B.Qty),0) -ISNULL(SUM(C.Qty),0) AS ClosingStock FROM Product A LEFT JOIN Receipt B ON
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i got this error" Incorrect syntax near the keyword 'Where' "
Okay have developed a form in vb.net cf using sqlce. I know this is the vb.net section but I feel it's a data issue. I have a table called STORES which has a primary key of two columns (ST_STORECODE & ST_CY_CODE).I populate a dataset with all the store data and to the following to find the required row:-
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When I step over the update command I get a concurrency error. Can someone PLEASE help me with this. I have spend days trying to fix it. All I want to do is find a row, do some changes and save it back to the database.
The system should not insert selected records from my datagridviewcheckboxcolumn if it's already existed in the database.It's like when you're registering online. If you're username/email address already registered,it would inform you that youre username/email is already registered and the site would ask you to change your username/email to new ones.The difference in my system is that i have 2 datagridviewcheckbox columns not just textboxes . Parent and Child in the datagridview. What i want to happen is that once the Code has been registered as Parent it cant be registered again as Child anymore.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
connectionString = ";"
sql_connection = New SqlConnection(connectionString)
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Im trying to print out all the items/sub items of a listview into one string.
here is the code i have:
For Each lvwItem In ListView1.Items
' Print the subitems of this particular ListViewItem
For Each lvwSubItem In lvwItem.SubItems
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How do i just print out the value (MyItem1) without the "ListViewSubItem: {}" part? I know i can use a string function to remove this, but id rather not
I have a DataGridView bound to a non-SQL Server database. I need to allow users to edit existing records but under certain circumstances I need to intercept the edit and instead of committing and updating the dataset I need to delete the edited record and re-add it as a new record. I have tried using every event I can think of to do this but haven't managed to get it right.
The closest I have got is with this:
Dim theRow As DataGridViewRow
Private loading As Boolean = True
Private rowLeft As Boolean = False
Private WithEvents cm As CurrencyManager
Dim copiedRow0 As String
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This almost works but sometimes completely messes up and re-adds rows twice and all kinds of other bad side effects. It seems a really simple thing to want to do but I just can't get it working.
how to update records on an existing access database using vb.net with just a textbox and a command button and how a specific record of a field can show up in a label or a textbox
i connected vb.net to my access database by just clicking on "add new data source">>"new connection">>"microsoft access database file" and just continue..tested connection and done.
you can see in the screenshot of my form, by default the left side textboxes are disabled but they're enabled if the user checks the checkboxes and disabled again if unchecked.
assuming that the textbox is already enabled and i want to enter a value in the Brewed Coffee area of the form...for example 5. when i click on my Submit button the value of that particular record in the database will be updated, so in my table the value of the quantity field in Brewed Coffee will be 5.
another thing is that how can i see a particular value on a label or textbox from my database like on the Prices area. in my database if a product's price is 80 then it should show a 80 in the label. the values of the prices from the screesnshot of the form are not the ones on the database xD i just typed them in.
i have to update an existing binary file with new information.
binary file contains records from 1 to 5 each record contains different values one integer and five strings.
no i have to update the 1 record with the new information .how do i do that.
i am using filestream,binary reader and binary writer.
Pwd_FS = New FileStream("test.bin", FileMode.Open, FileAccess.Read)
after reading the contents of the record i will assign new values to the recorod writing back should i use
Pwd_FS = New FileStream("test.bin", FileMode.Append, FileAccess.Write) if i use append i am not able to seek to the starting point.
im having a problem with replacing some files in a folder, i have made a Auto Upater for a application im making (so beta testers can test it and also get updated stuff to test) now i can replace the Main application.exe with
If File.Exists(Application.StartupPath + "\test.exe") Then
File.Replace(Application.StartupPath + "\update\test.exe", Application.StartupPath + "\test.exe", Application.StartupPath + "\test.exe.old")
End If
This is after i have unziped the main update.zip folder it downloaded
but i also have a Data folder in the Main application folder and inside the new update\Data folder its has updated files now i cant list all files to replace like above as i want be replacing all files all the time, so im looking for something like you have on windows (would you like to replace files) without the prompt its just replaces them, so really im looking for a move and replace without prompting
i have tryed
Directory.Move(Application.StartupPath + "\update\Data", Application.StartupPath + "\Data")
and
Directory.Move(Application.StartupPath + "\update\Data\", Application.StartupPath + "\Data\")
but it errors saying the folder exists and i cant delete the folder as it will have files in that DONT need updating
I have recently released a free application for some game and now I have added a few features 'the public' requested.
I used Inno Setup to create the installer, which works just fine.
Now however, instead of having the ask the user to uninstall the current version, and then reinstall my new version, I want to be able to give the user an Update install exe which they can simply run and it will update the existing application.
One thing I would like is that the users Settings are not changed. So hence the following questions: 1. Where are the Settings stored? I thought it was in the user's Local Settings <Application Name> directory, but I cannot find my application there... I cannot find it in the All Users or Administrator 'accounts' directories either...
2. Are the Settings stored depending on the Version of your application? (Assembly Version / File Version)?
If 2. is true, then obviously changing the Application Version (which is logical in an Updated executable, no?) would also change the Settings back to default..? Can I avoid that?
Finally, is it enough to simply overwrite the executable? What registry 'work' do I need to do, or can Inno Setup do that for me? I am only using one other file which is the SharpZipLib DLL file.
I have the code below and when I try to populate the listview it populates all of the listview items but only the first subitem. No clue what I've got wrong.[code...]
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