In my DoWork section I have several peices of code like this, updating various different listbox's.
I can't update the UI at this stage as it's cross threading so how can i get around this?
vb.net
'Get NEWS XML
Dim textReader As XmlTextReader = New XmlTextReader(Domain & "scripts/newsxml.php?LastUpdate=" & MyLastUpdate)
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I have a problem with updating records from vb to access, As i am a fresser with vb software request you all to guide me in resolving this issue. is there any defult code for reference.
View 2 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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We have two update panels on our webpage. Now first update panel is having button cancel. While second update panel is having a file upload control.Now if the user uploads a file that is going to upload in about 2 mins, and in between, say after 30 seconds the user clicks the cancel button, the upload taking place in update panel 2 should stop.
View 2 Repliesample code for update query...so that i can use this format in my project..
View 1 Repliesi got 3 textbox3
1. textbox1 is itemcode data field
2. textbox2 is description data field
3. textbox3 is additional data field
1. user key '1' in textbox1
2. user key 'keyboard' in textbox2
3. user key '3' in textbox3, the '3' will add to the additional data field (row 0) then become 18.
1. user key '2' in textbox1
2. user key 'mouse' in textbox2
3. user key '4' in textbox3, the '4' should be add to the additional data field (row 1) but unfortunately the value number still remain the same unchanged.
question:how to update the number value to the other rows of field ?
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I am accepting the amount value from the user. The amount would be added to the fees if the fee is in areas, if the fee is 0, then the amount update the fee field. but when the code below is run , only the amount is updated without adding to the arrears which is the fees. Wat is wrong with this command?
update Student_Info set Fees = (Fees + '" & Me.txtamount.Text & "' ) where Class = '" & Me.cbxClass.Text & "'"
would the decode command workd in vb.net
I have a database in access and have connected it to vb, its connected to a login system the only problem that comes up is when i want to add or update a field which then "da.Update(ds)" gives an error.
Update
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
Dim cb As New OleDb.OleDbCommandBuilder(da)
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I have a dataset and am committing changes to the database using tableadaptermanager.updateall. My datatable has a column called DateAddedToDB. When saving to the db, some records will have this column filled in, some won't. I want to use linq to update this column on each record that is null to a value of now() but am not sure what event to use. Is there an event like BeforeCommit or something like that? Or is my way of doing this completely inefficient and there's a much better way of doing this?
View 1 Replieshttpclient = New WebClient
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I've got results in a loop format from a XML file, I want to either insert them into my SQL database or update them if they are already there. My question is more around lodgic, do I have to
1. Get each item.
2. Do a search for it and see if it's in there.
3. If not add
4. If so update
Or is there a quicker way because with 200 records at a time, search then update/insert will slow down the process.
I have a dataset (dS), adapter(aD) and bindingsource(bS) I am using in a form. The datasource for bS is dS, and I am filling the adapter in the form's Load event with a table (tbl) from the dataset.
On the form I have a listbox and a textbox with the following properties set
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I've only been doing this a few weeks but been struggling with getting some simple commands working.I'm trying to get an insert into statement working, it works fine with a table in access 2007 that is text fields, however it wont work once I use a number field. Here is my code which doesn't work.
Private Sub btnInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnInsert.Click
Dim Sql As String = "Insert into staff(Firstname, Surname, Zone, Department) VALUES ('" &
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I'm trying to get an insert into statement working, it works fine with a table in access 2007 that is text fields, however it wont work once I use a number field. Here is my code which doesn't work.
Private Sub btnInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnInsert.Click
Dim Sql As String = "Insert into staff(Firstname, Surname, Zone, Department) VALUES ('" & txtFirstname.Text & "','" & txtSurname.Text & "'," & txtZone.Text & ",'" & txtDepartment.Text & "')"
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I have been stuck on this for the last 30 min, can't find out where I am going wrong. Its fully functional scrolling through records but I get an error when I try to update a record. The error is "Update requires a valid UpdateCommand when passed DataRow collection with modified rows." I include a pic of the code and error.
View 2 RepliesI am verynew to dealing with dll files so please bear with me on this.I am using a third-party software for security in my software project. To implement the security, I have to include a reference tot he API's dll file through the Project Settings window. Everything worked fie for some time until I installed the upgrade to the software on my development machine. This changed the DLL from 2.1.0.1 to 3.1.0.2. The development environment seemed none the wiser, but when I go to distribute the software now, the end user gets an error on startup stating that it can't find the referenced library dll file version 2.1.0.1.
According to the author there are no major differences between the two versions, at least with regard to the part that I'm using. I've read a few articles on the subject but nothing is jumping out as the right solution.
Can someone provide the correct code for updating a datagridview in VB.NET 2008? This would be a datagridview that I have created which displays data from an Access database table using a table adapter. Currently it doesn't save updates or save new records. I need to make it save updates and new records.[code]...
View 2 Repliesi am using MsAccess as database.insert/edit/delete commands are working perfectly in my code. the problem is that if i insert a record it is definitly inserted in table in MsAccess but that cannot be seen on runtime. To see that inserted record i have to close MsAccess Table to verify that the record is inserted there. And also I have to stop debugging and then restart debug to see that the record is being displayed in Datagridview. How i can changes in records can be seen on runtime in DatagridView as well as in the MsAccess table on runtime.
View 20 RepliesI'm not sure if this belongs in the database section or the NET section. I will leave that up to the moderators. I have converted a few of my VB6 systems to NET. However, I have retained the ADO coding technique. I probably need to update that. Below is a sample from one of my applications. As you can see, I retrieve the data and, based on conditions, I then issue an UPDATE command. From what I have been reading (and not really grasping) a DATASET/DATA ADAPTER combination will do the same thing. If so, could somebody rewrite this small block of code using "proper" ADO.NET techniques. If I see my own code rewritten it will be much more meaningful to me.
Dim cnxn As New SqlClient.SqlConnection(cnxnstring)
cnxn.Open()
Dim sql As New SqlClient.SqlCommand
sql.CommandText = "SELECT * FROM PART WHERE LTRIM(RTRIM([PARTNUMBER])) = " & "'" & Trim
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how to make an update on protected exe..? everytime i open on vs 2008 my protecteddoes application with winlicense it does not work.. now how to make an update to my software .. ? every time i rebuild my application , protection was gone.. and the old license does not work.. to the new exe...
View 2 RepliesI have a form that is currently working how I want it to. I want it to update every 30 seconds. I have set the time to 30 seconds but can you verify I have the correct code in my timer? Do I need to reconnect to the database every time it counts down from 30? here is my code that runs on form load...
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I have two similar databases and i want to update a table of one database from the other, so insert new records, delete records that are not in the source and update different values.I use the dataadapter update method but it not recognize the primary key, so it only work when the destination table is empty. Otherwise i have an exception of duplicate primary key.The databases are sqlite but i tried with access too with the same error (different message due to different provider but the two times saying that cant insert because the primary key is duplicate).
My code is:
vb
Private Function updatetable()
connectdbsource()
connectdbdestination()
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i have un project and i want to make when i start the program it will auto get the old sizes the user had it on.
View 2 Repliesupdate values in a CSV file.I would prefer to use ADO and write a query to update the values.
View 2 Replieshow to validate old regkey on nex update? using winlicense?
View 1 RepliesI am getting an error on my form "String or Binary will be truncated".I want to do a quick display of all of the data that is going to be updating when the app gets to: Me.taClientMast.Adapter.Update(Me.dsMain, "ClientMast")Is there a command where I can get it to show before the error?
View 4 RepliesNow it updates when I press the update button and then it displays the data like it has updated the database, but when I close the program and run it. It displays the data as not updated WHY DOESN'T THE DATABASE UPDATE?Same with the Add and delete commands, I've almost finished my program but there's always a problem :...
Dim StudentID As Integer = Me.Lst.SelectedValue
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|StudentTeacherDB.mdf;;Integrated Security=SSPI")
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I have this subroutine and i pass 2 parameters.
1 the Printernum (it is the line that i want to change in my listview)
2 the returndata
i want in the printernum line to add or update the txtonlyCounter in the 7 subitem.
Dim txtCounterLength As Integer = Len(returndata)
For i = 1 To txtCounterLength
FindBlank = Mid(returndata, i, 1)
If FindBlank = " " Then
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after Update my licesnce key not work, need to create key again
im using winlisence
I am working on arrays but i need to do a sql update statement. Contents of the array are also part a primary key in my table.How do I do an update using the array for example if my array is room names and my other table values are start date, end date and campus ID.
View 5 Replies