Get The Value Of A Databound Textbox?
Aug 31, 2011
Normally I would create a form and handle the binding of controls myself. However, the current table I'm working on has 180 something columns so I decided to use the BindingSource to control the amount of code I have to write. This has all worked well until I try and call the value of one of the textboxes.
So.. I bind my form like so: Me.MyTableAdaptor.Fill(Me.MyDataSet.MyTable)
Whenever I call a textbox e.g.: Dim myVar as String = txtName.Text myVar remains "" or Nothing. I just can't get myVar to equal what is typed into the textbox that is databound.
Is there anything I can do. I know that binding isn't the recommended use, but I really could do without having to write the insert, select, and update commands for 180+ columns.
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Apr 24, 2011
I am experiencing aproblem in my VB.NET App. The salary form is a databound form in my app to a linq data source. There are several text boxes to enter and calculate different salary fields. e.g. Basic Salary, Budgetary Allowance and Adjusted Basic Salary...
all the above three controls are bound to the datasource. now on the Leave events of the Basic Salary and Budgetary Allowance there is a function to calculate Adjusted basic salary.
The problem is i dont see the calculated amount in the adjusted basic salary but i see only the underlying data in the database instead of the programmatically calculated amount.
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Nov 19, 2010
All - I have a form that has two databound textboxes on it. To keep it simple, they are: Quantity & Value For BOTH of these text boxes, the TEXTCHANGED action will multiply the two and present the result in a LABEL. This works 100%.
[Code]...
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Sep 2, 2009
For BOTH of these text boxes, the TEXTCHANGED action will multiply the two and present the result in a LABEL.This works 100%.NOW - If I choose to add formatting to either of these text boxes, the calculation will not work. As one might guess, QUANTIY is formatted as NUMBERIC with zero decimal places and VALUE is formatted as CURRENCY with 2 decimal places.
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Mar 27, 2012
I have a databound textbox that I would like formatted as a phone number ((###) ###-####), instead of being displayed as 10 numbers.
I'm using this on a databound label, which works fine. The same doesn't work on a textbox, though.
phoneNumber = CDbl(lblPhoneNumber.Text)
lblPhoneNumber.Text = phoneNumber.ToString("(###) ###-####")
Anyone know of something that will work with a textbox?
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Dec 1, 2010
I got a pizza shop and the assingment is to create a application which allows the user to take a customer's order... I have a combo box filled with all of the items you can order (data from an access file)... and I need to have it so that when you select an item, it shows up in a text box below... I keep getting an error message saying you can't convert datarowview to string..
Here is some
Private Sub TakeOrders_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'PROJECT4DataSet.Items' table. You can move, or remove it, as needed.
Me.ItemsTableAdapter.Fill(Me.PROJECT4DataSet.Items)
[Code] .....
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Jun 12, 2011
As the title says I have a form with many databound textboxes. some of these boxes have data in them and some are empty. I need to add them altogether, so far all of the conversion methods I have tried err out when they run into an empty string, except Val, but then Val won't handle the string with a $ in it. I've tried decimal.parse which handles the $ but not the empty string. So I seem to be in circle that I can't get out of.
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May 16, 2011
I'm trying to add a new row to the database using databound textbox's but they keep adding blank rows to the database. If i use textbox's that arnt databound the info will get added
This doesnt work when using a databound textbox - it simply adds a blank datarow with no information
vb
Dim row As DataRowView = CompanyDetailsBindingSource.AddNew() row("CompanyName") = CompanyNameTextBox.Text() CompanyDetailsBindingSource.EndEdit() TableAdapterManager.UpdateAll(MainDataSet)
However if i use a textbox that isnt databound it works and the data is added to the database
vb
Dim row As DataRowView = CompanyDetailsBindingSource.AddNew() row("CompanyName") = TextBox1.Text() CompanyDetailsBindingSource.EndEdit() TableAdapterManager.UpdateAll(MainDataSet)
Is it possible for all the databound textbox's to be added to the database in one go without having to manually add them to the code?
e.g. Why wont this add a new row and insert all the data in textbox's to the database but if i change the AddNew to EndEdit it will update all fields at once?
vb
Me.Validate() Me.CompanyDetailsBindingSource.AddNew() Me.TableAdapterManager.UpdateAll(Me.MainDataSet)
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May 2, 2012
I have a combobox that is bound to a dataset (via datatable and datatableAdapter). The combobox displays the current data in the table as it should.I have programmatically added the string "ADD..." to the list at the form.shown event:[code]when the user then click on (select) "ADD...", i open a new form to allow the user to add a new item to the list.The code i have behind the "ACCEPT" button on the new form stores the NEW value to the DATASET. I have verified this by previewing the data in the dataset.My problem is getting the combobox to reflect the changes to datatable to which it is bound.[code]
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Mar 21, 2011
I think I already know the answer to this, but I figured it would not hurt to ask.
Is there any possible way to nest Databound DataGridViews in .NET? What I would like to have happen is for each row in the DataGridView to have a button to expand, which would then give me a DataGridView underneath that. I would like this nested DataGridView to also be able to do this, so I could go n levels deep with them.
Is this possible with the .NET Winforms standard DataGridView? (Or another standard .NET control?) I have seen people reference some third party controls, however they are really expensive, and I don't really want to go that route.
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Dec 27, 2010
I have cascading data-bound combo boxes, however, if the second of the two boxes does not have the value, I am trying to change the data source of the original process to the default selection.
However I am getting errors no matter what I try to do to get the combo box to clear.
cboSubSystem.SelectedIndex = -1
cboSubSystem.DataSource = Nothing
Call cboSubSystem.Items.Clear()
[Code]....
Currently: "Items collection cannot be modified when the DataSource property is set." at the Items.Clear If I try to remove the clear, I get "Cannot bind to the new value member. Parameter name: value" at the valuemember set
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Jul 18, 2011
I have a combox that is run-time bound to a table that is run-time built and populated from a text file. I have set the combobox autocomplete mode to suggest and the source to list items, but only the 1st item will work. Ok so here's the code:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
The file is a text file with a list of the 50 states and their abbreviations in the format : stateName - abbr.Now what happens is the data is displayed correctly, but when I begin to type a letter for the autocomplete the only letter that shows anything is the "a" and it will only show the very first item in the text file.Everything else does not display with the autocomplete, but does show in the list. I have tried variations such as adding the data as items like this:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
This way does not allow any autocomplete when I begin typing but everything is in the list. I've also tried converting the table to a customautocompletestring and still the same results.The only way that I have been able to get it to work is be entering each state as an item: state_cmbx.items.add("Michigan - MI"), then it works correctly.Also the combobox dropdownstyle is set to dropdown, and I'm using visual studio 2010 ultimate and coding using VB.
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Sep 10, 2009
All I want is to enter text into a databound combo box. If the entry is not in the list, then the user should have the option of updating the table that the combo box is bound to.The way I have set up the project is by dragging objects from the toolbox and having the application set up the datasource through the data sources tab. This in turn creates the bindingsource, dataset and tableadapter.For updating the combobox I have added code into the leave event. This does indeed update the client table as required. However, the id stored in the quotes table is -1. How do I make sure that the correct id is stored that references the newly added client record. For your information, the client table only has an id and clientname column.
The code is as follows:
[CODE] Private Sub ClientComboBox_Leave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ClientComboBox.Leave
Dim con As New OleDb.OleDbConnection
Dim dsClients As New DataSet
[code]....
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Dec 6, 2010
I have a datagridview which is bound to a table in a database. In said table, I have a field called Date and a field called Time, among other various fields. By default, I see that VB.NET attempts to help me by formatting the Date and Time columns for me, however I would like to do it my own way. I checked the columns' DefaultCellStyle fields and found them blank. Apparently, its current behavior is defined elsewhere. How would I go about removing the default formatting that VB.NET put in place to make room for my own?
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Sep 13, 2010
I have a table 'WeekPayment' bound to a DGV having following fields:
EmpID
EmpName
Wages
[code]....
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Jun 23, 2010
I'm having some problems with a data bound datagridview.My current scenario is the following..The itemSetup has tree properties {ItemNo, CompNo, LocNo}(compno locno are not required)I have a datagridview with a datasource list of itemSetup And this has two comboxes cboCompany that is bound to a list of company the selected value is bound to compno. cboLocation that is bound to a list of locations the selected value is bound to locno the location class requires the compno to create the list of location the problem I run in o is that the when the compno is Nothing the cboCompany throw a datagridview_ dataerror when the form is loaded en when a item is added it looks like the binding of the combox runs later then the value is set.
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Mar 13, 2011
I have a Listbox which is to display a list of product names which it reads from a database table, bound using the inbuild datasource/databinding stuff..however when the product names are updated/more are added in the table etc no change is reflected in the Listbox! only the initial names from when it was first bound appear, how to fix this?
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Mar 2, 2009
I am looking for some information on how to properly implement data binding on a user created control. My UserControl contains a Textbox, a Button, and a MonthCalendar. I am able to databind to the Textbox inside of my user control, however, I want to implement the databinding on the UserControl itself, and not reference to textbox inside the control. I have attempted to set a Property as follows:
[Code].....
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Nov 13, 2010
I have a DataGridView bound to an Access Database. I have also added a button to allow adding a new column. However, when i save the databound datagridview, the new column doesn't save. How can I fix this?
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Aug 15, 2011
As a follow up to my question Looping through a repeater control to get values of Textbox in asp.net
If user has entered a a quantity in the textbox, I want to get the corresponding ProductID value from the repeater control:
[Code]...
I am using FindControl to loop through the textbox (to see if user has entered a valid quantity). How can I get the value of the corresponding ProductID ?
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Jun 10, 2009
I'm trying to use lambdas in some VB.Net code, essentially I'm trying to set a flag when databound is called.
Simplified it looks like this:
Dim dropdownlist As New DropDownList()
dropdownlist.DataSource = New String() {"one", "two"}
Dim databoundCalled As Boolean = False
AddHandler dropdownlist.DataBound, Function(o, e) (databoundCalled = True)
dropdownlist.DataBind()
My understanding is that the databoundCalled variable should be set to true, clearly I'm missing something as the variable always remains false.
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Dec 19, 2011
I'm working on pasting into a datagridview. I know you can't paste right into the datagridview, but that you have to paste the clipboard into the dataset. I'm having no problem with all of that. My problem happens with the arrays. Just so you can see what is going on, I'm going to post my code now.
Private Sub PasteToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PasteToolStripMenuItem.Click
If String.IsNullOrEmpty(Clipboard.GetText.ToString) Then
[Code]....
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Nov 9, 2011
I have a program where a user can select something from a combo box in a data grid view control. I have it so that they can add something to the combo box via input box. The new item would automatically show up in the combo box at the bottom.
Now the problem is with deletion. I have it so that a user will click delete and a dialog box will pop up with the combo box. There a user will select an item and click delete. The item deletes just fine from the db but it doesn't update the combo box on either the delete dialog box or the datagridview. The only time it shows deleted is when I exit the program and reload.
Here is my load event that populates everything.
Public Sub LoadData()
Try
Dim cmTasks As New SqlClient.SqlCommand("Select * from Tasks where Department_ID =
[Code]....
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Mar 17, 2011
I have a ComboBox that's been bound to a DataView that's taken a filled DataTable. This DataTable has three columns. Before the DataView is bound to the ComboBox I add another column and set some values.
[Code]...
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Mar 7, 2012
I have a datagridview in VB.NET in which i have few columns which are data bound . How to sort a databound column which contains names ?
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Jan 9, 2011
With a datagrid, I want to use a databound combobox to set the value of a property with the combobox's selected value. How would I go about doing that?
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Apr 7, 2011
I've bound a lot of controls on a form to a Entity. Some of them update fine, the others are just jumping back to their original value as soon as it loses focus.The old data are loaded in all controls perfectly.
Dim Q = From e In EnData.Calls Where e.CallID = ID
TempRow = Q.FirstOrDefault()
ticTemp1.DataBindings.Add("Value", TempRow, "CallDate")
ticTemp2.DataBindings.Add("Value", TempRow, "CustomerID")
How can this be fixed?
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Apr 4, 2012
How can I add data to databound combobox in vb 2005
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Apr 4, 2011
I have a ListView with many advanced controls and html tags. ListView is bound to collection of profiles when first profile in collection is current profile. current profile has few differences from other profiles ie. flash embed, js and some other stuff. I can access inside of my ListView Container.DataIndex property which gives me 0 as first item in index but i'm unable to use inline If statements like so
[Code]...
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Oct 18, 2010
I am attempting to use a GridView in asp using VB and I get an error message about content.I did some research and reformatted the XML document the datasource is referencing but still cant seem to get the GridView to generate.Error Message: "The data source for GridView with id 'GridView1' did not have any properties or attributes from which to generate columns.Ensure that your data source has content." [code]
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