my program has been finished a year ago and then I didn't use it. but today I need to use it for some reason. I find it cannot be update when pressing the save button on BindingNavigator bar, here is the message
System.InvalidOperationException
When passing the modified data to DataRow collection，The update need a valid UpdateCommand.
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When I drag an item from my data sources area onto my form, VS automatically creates a tableadpater, bindingsource, and bindingnavigator for me. This is great. The name it picks "xxxxxtableadapter", "xxxxxbindingsource", and "xxxxxbindingnavigator", where "xxxxx" is the tablename, is in my opinion a bit wordy.
View 3 RepliesI have one datagridview control, a BindingNavigation and a Binding control on my form. I populate the datagridview control through the code. Moreover, the datasource properties of the DatagridView and the Binding controls are assigned a value through code (I didn't specify anyting in the properties window). The same for the bindingsource property of the BindingNavigation control (I assign a value trhough code). My code is the following:
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This code brings and shows the right results in the datagridview control, but the navigator control is inactive. I know that I have to bind the controls(DataGridView + BindingNavigator) to the BindingSource control. Is this a problem that I tried to do this by coding?
When I try to use code to move around in my database, using the code presented in:
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I have a windows app that has a bindingNavigator connected to BindingSource that connects to an Access database. I am manually adding a record to the underlying database using an OLEDBConnection/command (cloning the current record). The insert into the database works fine, what I am not sure on how to do is force the bindingNavigatgor to refresh and read the new record and refelect it in the record count/next/previous buttons.Jack
View 7 RepliesI am trying to bind my combobox selected value something like:
Me.combobox1.SelectedValue = Me.BindingSource8.Item("ColumnName")
The column has a numerical value
I am attemting to read a .txt file database into an xml file and then read the xml file into a DataSet and then bind the dataset to bindingSources and then subsequently bind comboboxes and text boxes to the binding source. I am struggling with how to create bindingsources with different filters. I am not sure if I am even going about this the right way. Perhaps there is a better way. I already have the program working using traditional OLEDB and creating different datatables but I wanted to be able to add and edit my datafile so I decided to convert it to a xml file.
HTML
If Me.OpenFileDialog2.ShowDialog() = Windows.Forms.DialogResult.OK Then
With OpenFileDialog2
folderName = .FileName.Substring(0, .FileName.LastIndexOf(""))
'fill dataset with selected xml table
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I am trying to merge two filters but it aint happening:
ClientProfileBindingSource.Filter = "ClientType = '" & "Seeker" & "'" And "ClientType = '" & "Both" & "'"
error:
Quote:
Conversion from string "ClientType = 'Seeker'" to type 'Long' is not valid.
how can i navigate the datatable with the help of a BindingSource?
here lies the
con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=db1.mdb")
con.Open()
cmd = New OleDbCommand("Select * from Table1", con)
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This is probably common question and I searched forums but didnfind the answer.I have two DateTimePickers on form and I want to use BindingSource.Filter to filter between two dates.I have tried this but it doesn work:
VB
BindingSource1.Filter = "FromDate >= " & DateTimePicker1.Value & " AND ToDate <= " & DateTimePicker2.Value
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I'm having problems with bindingsource. I have a proc used to update a datagridview from a bindingsource. When I run the debugger, the datatable appears to be populated rowcount is 2206 and 7 columns. When the bindingsource.datasource is set, everything looks good. The filter appears to be ok, however, when the datagridview is set to the bindingsource, it's not working. I have it in a try/catch block and an error isn't being raised. When I reference the columns to size them, an error is raised. Below is the snippet of
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I have a form with a parent bindingsource showing details and a child bindingsource showing the multiple line items in a dgv. This relationship has the properties set to enforce the constraints and cascade the updates and deletes. When I add a new parent record there is a function for inserting default line items into the child. I have this code fr deleting a record,
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edit: jmc posted a nice solution to this problem in the code bank just recently but I could not get it to work in 2005, this line, "AddHandler Me.LOTBindingSource.Adapter.RowUpdated, AddressOf parentAdapter_RowUpdated" throws an error. It say "Adapter is not a member of the System.windows.forms.bindingsource.
All fields from my class objects are added to the columns collection of DataGridViews, when the forms or custom controls that contain them are viewed within the VS 2005 designer. I haven't been able to figure out how to stop the designer from auto-adding all of the fields found within the bindingsource object.
View 6 RepliesIf you have a form with two datagridviews that were dragged on to the form from a datasource that have a parent/child relationship with foreign key constraints. Is there any difference between using the binding navigator Delete button or adding a button to the form and in the Click event put "somebindingsource. RemoveCurrent". Basically what I'm trying to find out is if clicking the navigator Delete button causes "Removecurrent" or does it do something else or something additional.
View 2 RepliesLets say I have a form with several Textboxes that are all bound to "bindingsource1". I'd like to be able to check the field data type each textbox is bound to. Something like this,
Dim ctl As Control
For Each ctl In frm.Controls
If ctl.GetType.IsAssignableFrom(GetType(TextBox)) Then
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I have a tab control with several pages. Within a page I have a panel. When I drag and drop a database to the panel the datagrid view is placed on the panel, but the bindingnavigator is placed outside the tabcontrol. Running the application shows only the bindingnavigator, which seems to have blocked the tabcontrol. If I cut and paste the bindingnavigator to the panel, and running the application shows the page with the bindingnavigator at the top and the datagrid below. However, the bindingnavigator no longer allows me to add and save entries to the database. I made sure all the properties were the same before and after i cut and pasted the binding navigator.As a test, I removed the tabcontrol, dragged and dropped the database to the empty form, and everything worked.
View 3 RepliesI've made a form where I can scroll through some rows in a SQL with the BindingNavigator-control.
Now I want to use the properties of this control in my code. Is it somehow possible to check if it has reach the last page/row? I want a button to be displayed then.
I want to Bind a BindingNavigator to a table using OLEDB or any other method (excluding the automatic stuff for increased complexity of my CW). I bound the Data Grid to the data using the following code
Try
Dim DA As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter("SELECT Question.Question_ID, Question.Question_no, Question.Question FROM Question INNER JOIN Quiz ON Quiz.Quiz_ID = Question.Quiz_ID WHERE Question.Quiz_ID =" & GetID(combQuiz_Title.SelectedItem), myConnection.GetConnection)
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Then I created my own delete and save commands. But I dont how to do the same using BindingNavigator
I have a bindingNavigator and some textboxes connected to the bindingsource, in a childform, a form inside another form.I have a third form, a search function, and I need to change the bindingNavigator Position, when I choose a number in my "search" form.I have some code in my "Search" Form, but I caannot get it to update the bindingnavigator in my child form:
Dim IndexNumber As Double = Me.TblMainVoyBindingSource.Find("ID", Me.TblMainVoyDataGridView.CurrentRow.Cells(0).Value)
frmEditVoyage.TblMainVoyBindingSource.Position = IndexNumber
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I am trying to Disable the "Move First", "Move Previous", etc in a Navigator Bar. I want them Visable, just disabled. In other words, I want them to show (grayed out), just not clickable. In the Move First properties I set Enable = False and Visable = True. It looks grayed out in the form design but when I run it, the arrow is still clickable. If I make Visable = False, the button does not show up in the app.
View 2 RepliesI disabled the PositionItem box by using
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I'm trying to bind the BindingNavigator to a BindingSource. It works very good, but the problem is the yellow plus icon is disabled. How can I make it enabled?
I created manually with code the dataset, tableadapters and the bindingsource, but when I bind it on the bindingnavigator it shows the records but it doesn't enable "Delete" and "Add Item".
Code from comment:
Dim connstr As String = "Data Source=" + Application.StartupPath + "Prueba.sdf"
Dim conn As New SqlCeConnection(connstr)
Dim cmd As New SqlCeCommand("SELECT * FROM datos", conn)
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Iam new to VB and have looked at Beths tutorial Videos. I was useing VB for 10 years ago and it have happen alot since, but the concept i pretty mutch the same. Iam useing VS2008 and VB and think your videos is great but in the real world the bindingnavigator is not so sexy to have in a application so I want to have my own buttons for creating new records, movenext, delete etc. When I was using VB4 i think the syntax was recordset.movenext but this seams not to work in 2008.
View 1 RepliesMy problem is I click Save and it tells me the update is successful (via my code) but it then deletes the record and shows me the last one again, so it's not really updating.
Code:
Private Sub BindingNavigatorAddNewItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles BindingNavigatorAddNewItem6.Click
HistoryBindingSource.AddNew()
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I tried just having it write "test" to a few rows.
I also have this other method (doesn't work either) that maybe a better way to try? I get an error on the dsNewRow= line saying it's not set to an instance of an object.
Code:
Private Sub SaveToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripButton1.Click
Dim cb As New OleDb.OleDbCommandBuilder(data)
Dim dsNewRow As DataRow
dsNewRow = ds.Tables("History").NewRow()
I am using VS2008 on Windows XP SP3. I have a form with two pairs of dependant comboboxes which are bound to a SQL database table. In each pair, the second combobox's choices are dependant upon the selection of the first combobox.
Both pairs of comboboxes behave as expected. However, when I use the binding navigator to look through other existing records, the text in the second pair of comboboxes disappears on records that already have selections.
The database table still holds the information, but it just doesn't display in the combobox. Again, this only happens on the second pair of comboboxes, not the first pair and both sets of comboboxes are set up exactly the same (albeit on different tables).
I'm creating a simple application whitch will allow users to add data on a form and stored in a database. I am using the BindingNavigator for this task, but i want the BindingNavigator to be in "addnewitem" mode on form startup.
View 2 RepliesI have created datagridview from my datasource using drag and drap. Without any changes it works fine, I can add, edit, delete and save. I added additional queries with my dataset which is fillby. My problem now is if I change fill with fillby the updateall is dosn't work anymore.
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Visual Studio 2008Visual Basic / .NET Framework 3.5I am developing an application to access data from multiple tables.Example Tables:- BaseInfo - Terms - OtherPeripher
View 1 Replieshow I can disable the various button on a BindingNavigator control? For instance, if a user is adding a member I want to disable the Delete button and all of the Move arrows, plus the ability to change the Position number.The same applies to clicking the Delete button. Diable the Add & Move buttons, etc.I tried BindingNavigatorMoveFirstItem.Enabled = False but that has no affect that I can see. I can still click the movefirst arrow and move away.
View 2 RepliesI have a BindingNavigator and a datasource, and I want the Next Item button to display in the corresponding textboxes a random record (which was not before displayed). How might I do that?
View 2 Replies