[2008] Unable To Get All Tables Updated (binding Source And Filters)?
Jan 28, 2009
I had this - in the CURRENTCHANGED event of my BINDING SOURCE.
Private Sub vendorBS_CurrentChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles vendorBS.CurrentChanged
If Me.CMCStarting Then Exit Sub
vendorBAL_C.vendorUpdate()
End Sub
This calls a sub in the class vendorBAL_C that does this
Private Sub SaveData()
_adapter.Update(_vendortable)
[code]....
The vendorUpdate sub calls two .Update's on my SQL Data Adapter.Only the first one is getting saved._vendortable gets saved - changes to _vendorcapabilitiestable does not.Those two DATATABLES are getting created by
_adapter.Fill(_vendorSet)
_vendortable = _vendorSet.Tables(0)
_vendorcapabilitiestable = _vendorSet.Tables(1)
To add just a tad complexity to all this I'm making changes to _vendorcapabilitiestable through a filtered binding source in the UI.
capabiltiesBS.DataSource = vendorBAL_C.capabilitiesTable
.
.
.
Private Sub CapabiltiesTreeView_AfterSelect(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles
[code]....
I tried calling .EndEdit's on my binding source - no change.Changes to the second table are not being saved.
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Oct 29, 2011
is there any way that i could link/bind multiple binding source to only one binding source navigator?
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Jul 1, 2009
part of my code is in below
[Code]...
I would expect to see the path.Path include the new record, however, I also notice that tempnextgen also include the new record. Can anyone help me out on this issue? Why the tempnextgen got updated as well, how to prevent this unexpected operation?
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May 12, 2011
I have created a crystal report with two tables, one for company details as a header and one for report details as a filler. I have been trying to get dates to filter the report and have done so successfully but the header part of the report does not show any data at all. I have binded the crystal report using a report viewer. Here is code I use to call crystal report. Lets say second table is called Company details, how do I get this information to show up with rescinded documents information. I have attached a copy fo what my final report will look like.
Private Sub BtnOpen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnOpen.Click
Dim sqlsearch As String
Dim con As New OleDb.OleDbConnection
Dim hugh As Date = DateTimePicker1.Value.Date
Dim hugh2 As Date = DateTimePicker2.Value.Date.AddDays(1)
[Code] .....
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Jun 1, 2009
I just don't understand what's going on - it seems to be "inserting" bogus rows into the table as I step past each line of code here.
[Code]...
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May 28, 2009
i have a datagridview bounded to a bindingsource that's pointing to a datatable created at runtime. In the same form i have a Add New, Save and a Cancel Button,the Add new calls the addNew, the Save Calls the EndEdit and the cancel the CancelEdit. Now the problem, if i fill only some fileds in the new row and call the cancel edit, the row is deleted, but if i fill all fields and i call cancel edit nothing happens.What i want it's, when i press the cancel button even if i put values in all fields the row get deleted.
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Jul 2, 2011
Binding Master Table to TextBox and DateTimePicker and Binding Details Tables to Datagridview then Add / Update / Delete in both
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Oct 18, 2010
binding navigators, datagrid view, binding source are all sql database parts.Will these parts still work if you havent got sql on you pc and your not using an database file (.log and .mfd) and your not coding to them, im using MS Jet/Oledb to code to Excel.What not to put on an Employee evaluation: This employee has hit rock bottom and shows signs of starting to dig.
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May 20, 2009
I have a microsoft database file i'm currently working with in a project. I have already added the data source and all seems to be going well. Quick question though? What I'm looking to do was, have a button called find, when I click it I want it to bring up an input box and use the text the user types in to search through my binding source of names, if it's there I need to display its record to the textbox and if it's not there I need to print out a messagebox saying its not there. I've been told I should trim the usersResponse and look through the binding source table to see if it exists then go from there, but i'm not sure how to do that.
Here's what I have so far:
Dim Message As String = "Enter the name to find."
Const Title As String = "Database Project - Find"
Const UserEnteredNullData As String = "No input for find."
[CODE]...
My question is, how would I go about searching through my binding source to see if it exists and how would I display it to the name text box?
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Apr 30, 2009
I've got a textbox on a screen - RateHr_3.
I'm binding it like this
If TypeOf ctl Is TextBox Then
Dim txt As TextBox = TryCast(ctl, TextBox)
If txt.Tag IsNot Nothing Then
[CODE]...
Now - here's the really odd part! See the attached image. I call up a vendor - go to change the LANGUAGE FROM (Finnish) to another language - when I leave the DROP DOWN for LANGUAGE FROM it puts garbage in the RateHr_3 field. It actually fills the field with "System.Data.DataRowView" - as you can see in the bottom piece of the attached image.I'm having a really hard time debugging this - How do you put a watch on a textbox in VS2008?
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Feb 10, 2009
I'm doing an ADDNEW on a BINDING SOURCE. After I add the row and endedit and update and all - the current item is not changed to that new row.
It remains at the first row.
Dim drv As DataRowView = DirectCast(vendorfileBS.AddNew(), DataRowView)
drv(0) = vendorfiletype
drv(1) = vendorfilename
[Code].....
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Apr 14, 2009
I have inherited an application at work that someone else started creating, right now about 1/2 of it is functional and is in use. My problem is that it is all done in 2.5 ?? and I am trying to step through it all to figure out how it works. I have always created my own binding sources, adapters and data tables.
One of the things I need to do is add a field to the fm_fieldman_master data table. I add the field in the db (SQL Server 2005)table, I come into VS and refresh the datasource, I then add the field to the fm_fieldman_master data table and the Fill,GetDAta() query I go into the designer and create all the attributes for the combo box
[Code]...
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Oct 11, 2010
I have an Access database and I want to view on a datagridview specific rows. For that I used the following :
CasesBindingSource.Filter =
"OfferDate Between #1/1/1997# And #12/31/1997#"
Cases is the table, OfferDate a field of the table wich is DateTime type.
When I use Between operator I get the following error :The expression contains unsupported operator 'Between'.
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Mar 24, 2011
How can I do this, this what I got so far.
Dim ClassID As Integer = 1
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database
[code].....
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Apr 20, 2011
I tried to increment a value as long as I press a button. The incremented value is connected via binding to a TextBox. The problem occures when I update the underlaying integer. I get an exception that another Thread owns it.
<Button Name="Up"
Content="Up"
PreviewMouseLeftButtonDown="Up_PreviewMouseLeftButtonDown"
[Code]....
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Sep 6, 2009
[edit]oops - stupid typo - this is resolved and explained in the next post[/edit] I've got a BINDING SOURCE - that I bind to controls - textboxes mostly. I create a row in the datatable behind this BINDING SOURCE like this.
[Code]...
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Sep 21, 2011
I'm designing a form wherein a datagrid is being filtered from numerous controls.
The issue im having is each filter overrides the previous one. Just wondering the best way to approach this problem.
Heres a snippet of my
Private Sub MakeIDComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MakeIDComboBox.SelectedIndexChanged
Sheet1BindingSource.Filter = "Make like '" & MakeIDComboBox.SelectedItem & "'"
End Sub
[Code]......
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May 22, 2008
I have an Access database that is updated directly in Access. I'm trying to write a program to 'monitor' the database, and have a DataGridView control showing the contents. When the program is first started, it shows the current data in the DB fine, however, I've been unable to get it to refresh with any updated data from the mdb file. I have a timer running on 5 second intervals, and if i clear the dataset, the DataGridView refreshes to empty.
[Code]...
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Jul 12, 2009
I've got lots of textboxes and such bound to a BINDING SOURCE - the datasource of the CASEFILEBS is set like this:
[Code]...
Seems "data saving" is not always being consistently done - sometimes a field change never makes it into the underlying datatable - sometimes certain field changes never make it to the DB. I believe I'm doing something fundamentally wrong that when fixed will clear up some of these issues.
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Jun 8, 2009
I've got a form - CMCConsole It pops up a dialog form for adding a new case.If the matter number in a textbox on that dialog form matches an existing cases matter number I would like to find it in the binding source of the CMCConsole form
Private Function CheckMatter(ByVal MtrNum As String) As Boolean
Dim cfIndex As Integer = CMCConsole.caseBS.Find("MatterNumber", MtrNum)
Dim cfIndex2 As Integer = CMCConsole.casefileBS.Find("MatterNumber", MtrNum)
[code]....
But it appear the filter for the CASE we were just on that is set on the binding source is keeping the FIND from seeing other cases.
caseBS.Filter = "CaseId=" & e.Node.Tag.ToString
Do I have to clear the filter in order to find a matter number in some other case??
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Sep 28, 2009
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it?
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Sep 28, 2009
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.
Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
I have two questions:
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it
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Apr 12, 2011
I have a program that needs to generate a random 8 digit ID and check to see if it in the database before adding it to a new row.
At the moment I have the correct code for doing this, but I have it in the event handler Bindingsource.AddingNew. This event handler executes my code and THEN adds the new row. How can I get it to add then new row and THEN execute my code? Is there an event handler I can use to do this?
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Mar 8, 2011
I found the same thread but it has never been answered. So I better to post a new one.
The problem is I added a new column in my table, I have a dataset linked to that table and a source of data of my datagridview.
Now, when I'm going to add a new column into my datagridview, I didn't find the new column which I added recently. Seems that the binding source is not updating whenever an update takes place.
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Aug 21, 2010
I'm writing a order entry system and I'm using structures to pass information around various parts of the program for things like the order header (order date, customer name, etc).
In building the form I discovered that you could use a binding source between form controls and the struct which is great because it means alot less code on a form that will be very busy anyhow. Unfortunatly I'm either doing something wrong, or I've discovered a bug in vb.net because when you fill in a textbox and the binding source fires the setter for that attibute of the struct, it does one of two things. It either: Finds the struct that I assigned to the binding source then creates a new instance of it after it is done thus destroying any changes.Creates a new instance of the struct because it wants to rather than use the one I instructed.
I know this sounds confusing so I'm including a small program that demonstrates the problem I'm having.
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Jun 12, 2011
Is there a way to use the DataTable.Compute Method with 2 or more filters, i have googled a bit and cant seem to come up with answer?
Current code
Dim Dt As Decimal = NumericUpDown1.Value
dtlist.Rows(i)("Value") = dtsold.Compute("Max(ClosePrice)", "Distance <=" & Dt & "")
[code].....
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Nov 26, 2011
How can I modify this code to add a binding source to datagrid1.datasource
DataAdapter.Fill(ds, strFileName) ' Fills data grid..
DataGrid1.DataSource = ds.Tables(strFileName) ' ..according to data source
DataGrid1.AllowUserToOrderColumns = False ' Disallows sorting to keep it all straight
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Jan 25, 2012
I'm creating a dataset (AddressDataset) that has 2 datatables - addreess and state.
Addrees: line varchar, state_id number
State: state_id number, state_name varchar
I've created a data relation between state id on these tables. I'm setting up to combo boxes: cboAddreess, and cboState. I'd like cboState to change to the correct value when address changes.
Dim dbSelCommand As OleDbCommand
Dim dbSelCommand2 As OleDbCommand
dbSelCommand = New OleDbCommand
[code]....
This gives me "address cannot be found in binding source".
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Jun 3, 2011
I've got a somewhat sillier question this time. After I insert/update my data using SQLParameters, it wont refresh. I'm using the following code to refresh the binding source:
[Code]...
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Oct 8, 2010
First: I have a numericUpDown and a class that are bound.
Me.percent.DataBindings.Clear()Me.percent.DataBindings.Add("Value", options, "percent")When I change the numericUpDown the underlying class seems not to update. I have to click outside the numericUpDown to force validation and force syncing. This is very counterintuitive and will cause problems. How can I make sure the underlying data object gets the new value on valuechange rather than validate?
Second: After I change the numericUpDown I have an option that serializes the underlying data in an xml file. The underlying XML file does not always get the right data. To figure out what is happening I added a button that outputs the values of the underlying data object and it is always getting updated. In other words...the control and the object values always agree. The serialize
[Code]...
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