Formatting The Bound Field?
Dec 13, 2009
I'm trying to format a datetime field to just show the date. The datetime is bound to an asp:label and for the Text attribute I have tried the following....
Text= String.Format("{0:D}", '<%# Bind("CReviewDate") %>')
and
Text= String.Format("{0:D}", <%# Bind("CReviewDate") %>)
[code]....
In all cases I get a green wavy line under the equation and the tip help says "Validation (ASP.Net): If this attribute value is enclosed in quotation marks, the quotation marks must match.
String.Format("{0:D}", DateTime.Now)
is the syntax that I have been told should work.
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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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Jun 20, 2009
I have a DGV that is bound to an Access DB DataTable. I have added a column in the DB that is either a 0 or a 1. When the program loads, I want to change the backcolor and forecolor of each row based on the value of this column's cell. ie: a 1 makes the row red, a 0 makes the row green. this column would be hidden in the DGV.
Is this possible to do at runtime even though it is bound?
I'm not sure when I would actually do the color swap, formLoad?
Second question, as I iterate through each row of the DataGridView and need to change the value of this column, will this update my DB automatically, or do I need to call an update() after each row?
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Jun 11, 2009
I've got MONEY datatypes in a SQL database.I bind these to TEXTBOXES in code.These fields show up like 104.0000 or 0.1300.Is there a standard way to format these so that only two decimal places appear?
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Aug 14, 2011
I have a custom collection class that is bound to a data grid view object.I'd like to try to do the following from the custom element class if possible.
1) I'd like the name of the column header to be a different text than the name of the public property in the custom class. i.e. Trade_Name should read "Trade Name"
2) I'd like to try to be able to manipulate the text formatting/color of the individual collection class element's items. i.e. for a profit/loss field I'd like to have the numbers be red if they are loss and black of they are profit. I know I could do this from the datagridview object in the form, but that can be cumbersome to raise events etc.
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Sep 15, 2011
I have a window form with a label. On the form I have a dataset, bindingsoure, and tableadaptor (all created by the IDE in response to binding the text property of the label) To fill the datatable, the IDE created this: Me.ClientsTableAdapter.Fill(Me.MyDataSet.Clients) Works fine. The bound field is a phone number, stored in the db as a 10 digit numeric string I need to format this with the standard ()-, and I have a function that will do just that. How can I apply the formatting so the phone number appears in the label properly?
[Code]...
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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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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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Apr 7, 2010
I have a date time picker bould to a Nullable Datetime field in a sql server datatable. The ShowCheckBox option is set to true. If the user unchecks the checkbox on the datetimepicker I would like to the field to be set back to null in the DataTable. The default behaveour does not seem to do this and there is no specific event for the uncheck.
Private Sub dtpCertDate_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles dtpCertDate.ValueChanged
If dtpCertDate.Focused Then
[code].....
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Jan 17, 2011
I'm trying to populate a date from a bound text field in a DetailsView. I keep getting a error when a DBNull is in the column. How do I avoid the DBNull when populating the text field.
My code is as follows:
<asp:TemplateField HeaderText="CBYD Clear Date">
<EditItemTemplate>
<asp:TextBox ID="CBYDExpDate" runat="server" ReadOnly="true" Text='<%# IIf(Eval("CBYDDate") is DBNull.Value,"", String.Format("{0:MM/dd/yyyy}", Eval("CBYDDate").AddDays(30)))%>' />
</EditItemTemplate> </asp:TemplateField>
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Mar 25, 2009
I have a VB Application that is loading an Array with Numbers from the Sequel Server that have numbers 315054 no cents and leaving the .00 off even numbers. I need to write out the number to a textfile that has 14 zero's to the left removing the decimal point from the number.
The Number should format and be written out like this:
00000031505400 in the text file.
My coding does this as long as the even number has a decimal point .00 but if the number comes in as 315054 into my array my coding gives an Argument error with the coding below.
SCreditTextBox1 = Microsoft.VisualBasic.Right("00000000000000" & Microsoft.VisualBasic.Left(_sData(Irow, 7), _sData(Irow, 7, ".") - 1) & _
Microsoft.VisualBasic.Right(_sData(Irow, 7), 2), 14)
Is there a way to check for no decimal point and then place the number with no .00 as 00000031505400?
The accounting people are entering the numbers into the server this way incorrectly. The .00 is suppose to be entered with it, but not all even numbers are entered this way without .00, just a few, but I need to check the number to see if there are decimals and without decimals do something. Could my coding be re-written to account for not having the .00 and to format the number correctly to avoid the argument error?
I need for any number to format with:
$3,000.00 would appear in server as 3000 or 3000.00 and should write out like this below: I need to check for decimals and without decimals and writeout the format like this below:
00000000300000.
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Oct 29, 2010
Using VB 2008, I have a form which includes a richtextbox which is bound to a database field. When i bind the datafield to the richtextbox, I get an unformatted display unlike the control in VB6. How can I bind the data from the database to the richtextbox so that it displays formatted?
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Nov 17, 2009
On my form i use binding source bound to fields.. if a user starts to change something then hits cancel (i set all the fields to "" to clear them) and then if they choose that record again it shows nothing in the bound fields..
is there a way to reset/cancel from editing without loosing original values?
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Oct 19, 2009
I have a custom control with a bindable property:-
Private _Value As Object
<Bindable(True), ... > _
Public Property Value() As Object
Get
[code]....
Also, here, I'm adding a handler to the DataBindings.CollectionChanged event.This is the second place that I retrieve the type:-
Private Sub DataBindings_CollectionChanged(ByVal sender As Object, ByVal e As System.ComponentModel.CollectionChangeEventArgs)
If e.Action = CollectionChangeAction.Add Then
Dim b As Binding = DirectCast(e.Element, Binding)
[code]....
I need the first place, because the BindingContextChanged event is not fired until some time after InitializeComponent.The second place is needed if the binding field is programatically changed.Am I handling the correct events here, or is there a cleaner way to do it?
Note: My GetValueType method uses the CurrencyManager.GetItemProperties....etc, to retrieve the type.
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Apr 19, 2009
I have some code and there are 2 errors which I don't understand I have tried all sorts...
1)The type for variable 'Index' will not be inferred because it is bound to a field in an enclosing scope. Either change the name of 'Index', of use the fully qualified name (for example, 'Me.Index' or 'MyBase.Index').
2)Function 'GetNewPhrase' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
I can't get it to work..
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Mar 12, 2009
This program was created with vb6 to find and remove empty folders. i converted this program to VB.NET code and it isn't working like it should.. it seems to stop scanning at 'C:\documents and settings' instead of scanning other folders in other directories...Does this code look right? I can provide the entire program if needed... I just want to know why it isn't scanning like it should. Btw im switching from vb6 and trying to learn vb.net.. vb.net is a lot different..
Private Sub ScanForEmpty(ByRef vFolder As String)
Dim nSize As Integer
System.Windows.Forms.Application.DoEvents()
If bExit Then Exit Sub
[code]....
I get this message at the bottom:Warning5 The type for variable 'FolderObj' will not be inferred because it is bound to a field in an enclosing scope. Either change the name of 'FolderObj', of use the fully qualified name (for example, 'Me.FolderObj' or 'MyBase.FolderObj').
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May 18, 2012
Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
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Jun 2, 2011
In MS Access you can set the background to a specific colour when the field has the focus. This is done through "conditional formatting", using the "Field has Focus" feature. How is that done in VB.NET?
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Feb 29, 2012
I am working on an invoicing program that based on the Northwind database.I am pulling information from a 'view' for the orders form.How do i program the customer ID field to populate with the corresponding invoiceID (already done through the view) AND when i drop down the customerID box to list all possible customers from the customers table.I have the SQL for the operation I believe the problem is that the field is bound to the orders Orders Qry 'View'.How can i accomplish both of these tasks within the same dropdown?
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Jun 16, 2009
I want to allow blanks in BOUND textboxes that are bound to int and money columns.
It's not letting me - apparently it knows to force digits...
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Sep 20, 2010
Is there anyone who can tell me the code for the below? Receive a lower bound and an upper bound of a range. Also receive a number of random numbers to generate. You must validate
1) the numbers are integers
2) the lower bound is less than or equal to the upper bound
3) the number to generate is positive (i.e., > 0).
Generate this many numbers in the specified range and keep track of how many of each are generated in an array of counters. Once all the numbers have been generated, display in a List Box the number, the raw count data, and the percentage of how many times the number was generated displayed with two decimal places of precision.
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Jun 4, 2010
I have a DataGridView that is bound to a DataSet I created from a database table named Contacts. The Contacts table contains a field called StatusId. StatusId is a foreign key to a table called Status. The Status table contains StatusId and StatusName.
[Code]...
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Sep 30, 2010
I have some VB .NET software that interfaces to a load of old (but sound) COM objects. The VB provides a GUI for the COM objects, part of which consists of setting various options on the COM objects - several of which relate to string formatting.I have a simple pair of VB .NET functions that convert basic %f, %d, %g formats to/from .NET equivalents using a large select case covering specific common strings, but they don't cover all formats.[code]Before I start diving in and making it more versatile with some parsing, does anyone know of a class (eg VB or C# .NET) that provides a decent ready-made implementation? Or perhaps some regexp wizadry could be used?
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Jul 9, 2010
There is something strange going on with my datagridview.
I've a data adapter that fills the underlying data table from a database. Then I assign this datatable as datasource to the datagridview Then I add a row to the datagridview and immediately I need to update the table in my database (as soon as user leaves the newly created row).
At this moment I have more rows (+2, not +1) in my datagridview than in the underlying datatable (the new row doesn't exists yet in it so the data adapter .Update method doesn't write anything to the database).
When DataGridView's .RowLeave event fires the undelying datatable is not yet updated. I've a question - is this behavior normal?
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Jan 26, 2009
We are binding most of our text boxes and dropdown boxes to a BINDING NAVIGATOR (with a DATA SOURCE of a DATA TABLE).When the BN is clicked through the text boxes all change immediately.We need to use some non-bound controls as well.First one is 4 radio buttons that when clicked will change a single value in a DATA TABLE.What would be the best method to do this? Should I track when the CURRENTCHANGED event occurs on the BINDING NAVIGATOR.I'm thinking that I could trick this by BINDING the SINGLE FIELD to a HIDDEN TEXTBOX and when that textbox CHANGED event occurs mess with the radio buttons and visa-versa.
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Feb 7, 2011
There are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
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Jan 13, 2010
While I understand there are properties of MailItem that would allow one to programmatically create a formatted email, I would prefer the ability to copy the body of an email that is already formatted to my liking (bolding, italicizing, embedded pictures/tables, set margins, etc.) copy and paste it to a newly composed email such that this formatting is preserved.
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Jul 5, 2010
I've got a piece of code in a project (MyProject) that contains early bound object from a referenced assembly (We'll call it CommonAssembly):
Dim myObject As CommonAssembly.MyEarlyBoundType
now I have another assembly that is dynamically loaded because it is not present in all projects:
Dim myLateBoundObject As Object = AppDomain.CurrentDomain.CreateInstanceAndUnwrap("Utils", "Utils.MyLateBoundType")
MyLateBoundType derives from CommonAssembly.MyEarlyBoundType, and I want to cast myObject to myLateBoundObject and then programmatically invoke the additional
[Code].....
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Oct 5, 2010
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
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Jun 28, 2010
I am trying to edit a dbf table. I would like to be able to rename field headings and change the field type, ie string or dbl, and the size of the field. is this possible to do with vb.net. I have connected to the dbf file but after that am lost on what to do.
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