Access To Bound Data Items From A Textbox / When Text Box Is Not On Form
Dec 20, 2010
In my application, I have a data bound form using a binding control (built by the wizard). The application has one primary data screen plus a few more on tabcontrol subscreens.Picture for example that the tabcontrol has two tabs, tab1 and tab2.When the form is displayed, tab1 is visible.Now picture the form or window split in half the top part of the form has a few textbox controls bound to the data and there are a few textbox controls in the lower half of the screen on tab1 of tabcontrol1.There are a few textbox controls on tab2 as well.When the form displays, I can access any of the .text properties of any of the textbox's that I can see on the form and in tab1 of the tabcontrol.BEFORE tab2 is chosen or even, I need to get some of the data from the .text property on a textbox control that is on tab2.I have tried to get the data but as far as VB is concerned, it does not appear to be there UNTIL tab2 is displayed.
To prove this, I put a command button on the form and it simply does this: MSGBOX (mytext box33. text)mytextbox33 is a databound control on tab2 of the tabcontrol1.tab2 is not in focus and apparently, neither is the data.how can I read the .text property of a textbox that is on a form but the form (or tab) is not in focus?
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Mar 12, 2009
I am trying to change a property of a data bound textbox on start up of a form and each time a new record is navigated to. I can't find the a good event to attach this action to.
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May 8, 2009
After I have retrieved my data from my access database, I would like to insert text into one of the columns in a new row. Is this possible? Here's a snipit of my code I use to retrieve the data from access:
If con.State = ConnectionState.Closed Then con.Open()
sdr = cmd.ExecuteReader()
rtime = Now()
[Code]....
It's the rtotal_time value that I need to insert into a new row, in and cell, the datagrid.
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May 7, 2012
I have an Address Book project with a listbox. The listbox is bound to the database via the little arrow pop-up box in the corner of the listbox. I have the DisplayMember set to FirstName, and obviously only display the First Name of the contact in the ListBox. Is there an easy way to change it so that it displays the First and Last names? I can't change the binding because I need it to get the ID of the record selected.Here's the basis of my code...
Private Sub MainForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CompanyDataSet.Contacts' table. You can move,
[code].....
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Jan 3, 2011
I want it so every time I click an ITEM in the Listbox it displays ALL the data into the textbox. I know there's an easy way using table adapters and binding the listbox, but I'd prefer to do it this way for my project.
So this is what I got.
Lst.DataSource = ds
Lst.DisplayMember = "tblStudent.FirstName"
Lst.ValueMember = "tblStudent.StudentID"
[code]....
It only adds the first rows details to the text box when I click the second record the first rows details are still there.
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Mar 15, 2012
I have a simple vb.net app and I'm trying to update a one row Access table with data from some textboxes. This is a learning exercise for me as I am coming back from not programming for almost 10 years, and know there are lots of other ways to manage this data, but I'm just trying to understand different aspects of ADO.net a little better.
The ERROR I'm trapping is:
"Syntax error in UPDATE Statement"
Any thought's as to what is going on? (See CODE and stuff below)
Here's the Scheme printed from ACCESS showing the exact spelling of the database table and column names:
Table: MaxTime Name Type Size
ID Long Integer 4
[Code].....
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Aug 23, 2010
I have a textbox that i've bound to a dataset via the IDE.i've but when adding a new record i can;t populate it programatically, but the user can type data into. The follwing code doesn't put the required text in the textbox, but i can type it it while debugging:
FQuoteCard.QuoteHeaderBindingSource.AddNew()
FQuoteCard.TextBoxBurdensOperatorID.Text = "some random text"
this doesn't seem to make any sense - i'm adding new so i should be able to populate the textbox programatically, in the same way as a user can type in the textbox.I suppose i can bind the textbox programatically after adding the text, but this somewhat defeats the object of being able to databind via the IDE.
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Jan 17, 2012
I have a few bound data controls on a form. However, there are certain data fields in the same table from which this data is coming from which I would like to be able to access in memory but which is not bound to a control. I have tried looking through the properties of my datanavigator, my dataadapter and my databindingsource and can't seem to find out how to sort this.
In simple terms, I have a data navigator to iterate through various fields in my dataset. I want to be able to access to the contactID of the currently visible / selected contact. The contact ID exists in the data source but I do not want to show it, just access it. How do I do so without issuing a manual SQL call to the database again?
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Jun 17, 2011
Assuming rnameTxt is a textbox and is bound to a field is a DataSet named "TableData".
rnameTxt.DataBindings.Add(New Binding("Text", TableData, "Customer.rname", True))
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Apr 18, 2010
Is there a VB.net function that tells me the data type (e.g., DateTime, Integer, Varchar) of a bound textbox?
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May 15, 2011
I was using 2 forms, the first one has general data capture and the second one is a calendar form. On Form1 I have mulitple windows controls. A Textb ox and beside a Calendar button. When I click on a Calendar Command button, it should open calendar form and once the user selects the date, the date should be placed in the text box on the form1. Identical to this on Form1 I need multiple textboxes that needs date to be captured.I cannot use a global variable for this as I need to validate mulitple text boxes. To explain this, I have a Transaction Date and Date Received. I need to validate whether Transaction date is prior Date Received or not? I dont want to use several global variables b'coz I might need multiple validations as above. Please help me on this.
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Mar 23, 2009
created a control inheriting a textbox. it is used to format a datetime data. i created a custom property DateTimeFormatMask which is "MM/dd/yyyy" by default. problem i'm having is that when datatable is filled by adapter and the textbox is populated with the data, it is not formatted..i placed the codes that formats the data in the Validating Event which doesn't seem to be triggered at this point.below is my code on my
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Jan 29, 2010
I have a main form with datagridview containing a list of contacts:
VB
Public Class Form1
Private Db As New DataClasses1DataContext
Private Sub Form1_Load
[Code]....
After saving, I get the correct message ("Saved"), and the DataGridView in the first form gets updated in real time.
But... when I take look at the data (or close and reopen the forms) the data in the database (SQL server) have not changed! What happens!
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Dec 14, 2011
I am trying to learn how I can enter data into a Microsoft Visual Basic 2010 TextBox on a form and when I Tab to the next TextBox, the data from the first TextBox is automatically appended to a Microsoft Access 2007 table. For this question, no other controls or objects are necessary.
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Jan 8, 2010
Is it possible to have a Textbox on a form that when the user inputs data, ( during Runtime )that data remains in the Textbox for good and the Textbox then becomes read only ? Is it also possible to make it so that the CD with the programme on, is in the PC when the programme is being used. Perhaps writing the Textbox data back onto the CD ?
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Jul 28, 2011
I have a datagridview that is populated from an Oracle 11g DB. What I would like to do is add the values of a column together and display the results in a textbox. What would be the easiest way to do this?
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Nov 26, 2009
Suppose I have ToolStripMenuItem mnuOrderOptions that contains the three drop down items. I want to copy all the items are their respective event handlers to Contextmenu on button click & then bound that context menu with the form.
Private Sub AToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AToolStripMenuItem.Click
MsgBox("A")
End Sub[code]....
how to clone the menu items and then bound it to form context menu.
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Jan 3, 2012
I have a form which has my main data. On the form is a button to open another form called AccountNotes.
The table keys are as follows:
tblAccounts
pkAccountID
AccountDetail
etc etc
tblAccountNotes
pkAccountNotes
NotesDetail
fkAccountID
When I open the form AccountNotes how do I ensure it is tied or bound to the main form record I am viewing?
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Oct 21, 2011
On my app. there is a lot of labels created by code (Please see my post "Filter text before Data Binding) how can I by clicking on one of this labels have the app respond by bringing up a text box bound to the same field so that changes can be made to that field?
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Oct 15, 2009
I've been working on this for some time and I'm surprised that no one else has had this problem. I have a databound form with multiple date fields. I cannot delete a date field once it has been populated. I can change the date, but that is about it. Once Clearing the field i cannot lose focus of the textbox or even close the form. I have read one article on this but it does not seem to be working. The below code I have found. how to get the field to allow nulls? This is not an issue with the table not allowing nulls either.
[Code]...
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Aug 9, 2009
I have a data-bound combobox that pulls values from a BindingList(of T). Combobox loads fine, correct values are displayed (I'm not using SelectedItem or SelectedValue). I'm using properties and connecting the data to the control via a bindingsource.
What I want is if the user types text into the combobox, I want the data from the bound table to change to that new text, i.e. edit the bound data directly.
Easy as pie to do with a textbox, but can't seem to get a combobox to work this way.
I was trying to use the validated event of the combobox to write the data to the datasource, but it doesn't fire when I press enter. Is that the way to do it? Can I not link the data to the combobox directly?
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Oct 19, 2011
I have a Data Bound ListBox on a 2nd form, making a selection updates the Data Bound Labels on form1. The problem I have is the ListBox is desplaying the ID not the Title, I have chect all obvios places and find nothing.
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May 1, 2012
I have searched the web and this site for an answer but have not been able to solve this problem.I am not able to place a flashing cursor in a specified cell of a data bound DataGridView on Form_Load.My test project consists of a single Visual Basic 2008 form with a database created in Microsoft SQL Express 2005 using the Add New Data Source in the Data Sources window.The database has one table consisting of 2 columns.Column 1 being the primary key with Identity Specification set to On.The second column is a VarChar50.The DataGridView was placed on the form by dragging it from the Data Sources window thereby creating the Binding Navigator and the Private_Sub Form_Load code.I have added the code that should put the cursor where I want it.[code]
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Apr 12, 2011
I have written some functions that I have in a module. In one of the functions I would like to update a table that is in a dataset. I would like to do this with this function and not from a form class where the table could be bound. I need to call the function from various places in the application.
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Jun 12, 2011
im using crystal report in vb 2005. how to import the data from the textbox or label on the form to the text on crystal report using a button.
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Sep 27, 2010
None of the Microsoft videos I have watched, or the other posts I have seen, have given me the pieces I need to understand this process. This is the one key piece of understanding that I need to finish about 4 different programs I have started in the last 2 years. All of them key on understanding the following processes:
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Feb 24, 2010
I am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
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Aug 16, 2011
Ok so i have a textbox that gets items from a website and pastes in that then the list box adds the items but i want each line in textbox to be a new item instead it just adds it all as one
heres my code
' Procedure:
Dim Str As System.IO.Stream
[code].....
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Feb 18, 2012
I have a lot of control array textboxes called txt(1) to txt(320) on form2. I have a textbox1 on form1 with a click evet that says textbox1.text= form2.txt(1).text but it gives an error (txt is not a member of form2). I tried disabling option explicit, option strick and option infer. Still won't work. My code is to long for this place maybe a short version osf the code. Do I need to make a Public MyArray(15,15,15,15) as string, in the Module1 then copy txt(n).text to the array or is there a way to access txt(n).
Public Class Form2
DPrivate Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Loadim txtBox(340) As TextBox
[code]....
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Mar 8, 2011
I am trying to an ImageUrl to an image in a Template Field in GridView but keep getting the error:
Object reference not set to an instance of an object. on this line:
Dim imagePath As String = rowView("image_path")
I've never done this before on a GridView but had it working on a ListView.
Heres my code:
.APSX
<asp:GridView ID="gvImages" DataKeyNames="id" runat="server" AutoGenerateColumns="False" BorderWidth="0px" GridLines="None">
<Columns>
<asp:TemplateField>
<ItemTemplate>
[Code] .....
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