Multiple Textboxes Bound To Different Items In List?
Oct 1, 2010
On my form I have 3 textboxes. They get their data from a database query. The trick is the database may return 1 result or up to 3. If the query returns only 1 result, I want the first textbox populated, 2 results, 1st and 2nd textbox populated, etc... I also want to be able to track CurrentItemChanged Event for updating purposes. My initial thought was to use a list object as the binding source but how would I cycle through the list if it returns more than one so that I can assign the values to the 2nd and 3rd textboxes or if data is entered in to a blank textbox I want the currentitemchanged
View 6 Replies
ADVERTISEMENT
Nov 2, 2011
I am using a DataGridView bound to a BindingSource which is itself bound to a List of objects. This all works well until I remove objects from the list. If I am scrolled down to the bottom of the DataGridView and then remove a bunch of items from the list it is bound to it generates a DataError exception because the length changed and the rows I am looking at no longer exist... I changed my code to handle that error, but now instead of popping up a message it SLOWLY erases the data in each of the newly invalid rows at the end of the table (I think each time it does one it generates a new DataError, which is why it is so slow).
How do I prevent this? I want to be able to dynamically (and programmatically) add and remove items from the table without the possibility of this error... I assumed this would be handled automatically as part of the data binding process but I guess not.
View 1 Replies
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...
View 4 Replies
Mar 13, 2012
Okay this is the simple thing I'm trying to accomplish. I can get richtextbox1 to add to listbox 1. but i cant get both to add. the compare works fine. I'm stumped.
View 3 Replies
Apr 19, 2010
How would I add multiple items to a dynamic list without having to use the .Add method for each one?[code]...
View 10 Replies
May 2, 2010
If I have 3 times selected and when I click "submit" for example I want all my selected items to be removed, but when I try to do this only my first selected item is removed.
ListBox.Items.Remove(ListBox.SelectedItems)
How do I remove all 3 items from the list box at the same time?
View 2 Replies
May 12, 2010
I'm trying to add multiple items to a list box from a database but I'm having a few problems getting it to work. Below is the code i have so far but for some reason it will only add the last field in the database to the listbox and not the remaining 12.
View 3 Replies
Jul 14, 2011
Using Visual Basic in Visual Studio 2008, I have created a Windows form with multiple tabs and questions. Each question has an associated drop-down listbox that the user will eventually click on to enter his or her response. My client has now informed me that she wants to change the standard responses in each response box. There are well over 100 drop-down listboxes, all with the same items, and they all must be changed.
I originally inputted the items using design view. Would someone please tell me if it's possible to edit all of these boxes in the design view simultaneously? When I control + click on more than one box, the Edit Items option that is normally available disappears. Is there a way to do it in code in a manner that would save back into design view?
View 9 Replies
Oct 31, 2011
I've never really used the Check List Box in the past, however, for the recent program I am developing, I am using this control rather than individual check boxes scattered across the form.Anyway, I want to be able to program through code which items get checked in this checked list box. Specifically, I have a variable that contains the text of each check box that I want checked.With a normal check box, I can simply say:
Dim strNames As String
strNames = "John Doe, Mark Johnson, Mike Brown, Cindy Smith"
If strNames.ToString.Contains("Mike Brown") Then[code]....
View 18 Replies
Sep 10, 2010
No matter how I try, I can't seem to create a nice and clean algorithm for doing the following:
System.Array (or generic List) data of System.Object
System.Array (or generic List) xval of System.Object
System.Array (or generic List) idxs of System.Int32
[code].....
View 4 Replies
Sep 8, 2009
I have textboxes that are bound to a dataset table. How can I tell what data type each textbox is bound to? Specifically, how can I tell if a textbox is bound to a DateTime field? How can I tell if a textbox is bound to a Numeric field? How can I tell if a textbox is bound to a Character field?
View 1 Replies
Mar 2, 2009
I have some custom code in an extender that can be enabled on textboxes to determine whether or not to display scrollbars based on font, size, and textbox size. It works great, so long as the text box isn't data-bound. Once it is data-bound, I get some weird behavior. The text suddenly selects when the scrollbar is turned on. I am using VS 2005, VB.NET.
[Code]...
View 1 Replies
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?
View 6 Replies
Apr 23, 2010
I would like to display the multiple records in multiple textboxes Following is my tables and data:
tblJan with these data:
col id
1
2
3
col January
10
20
30
now i want to display the value 10 in one textbox and the value 20 in another textbox and so with the value 30 in another textbox..
View 4 Replies
Feb 23, 2011
I have a list box that is bound to a datatable, which works fine. The question I have is this. I have a list of values in the form of a sqlDatareader that I want to use to select values in the list box, that is to say if the value from from the datareader matches the value member from the row in the listbox then select the row. I've come up with the following code, but can't find the syntax to utilize the SetSelected method.[code]...
View 5 Replies
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?
View 9 Replies
Sep 28, 2011
How to sort items in ListView by column bound to an Observable Collection ?I've looked all over the place and I can't find anything easy enough or simple on this.
View 2 Replies
Dec 12, 2009
I have a form with 13 listbox's which I populate from an SQLCE database. Currently I have the same code written 13 times but now I want to run a loop so I can reduce the amount of coding. I cannot figure out how to make a loop work with the .datasource and .displaymember. The loop works fine up to the lines with .datasource and .displaymenber. I have tried all kinds of different syntax but nothing work. I have tried things like Position "& i & "ListBox.DataSource and many other ways.
Dim i As Integer
For i = 1 To 13
Dim da1 As SqlCeDataAdapter = New SqlCeDataAdapter("select WebsiteName from UrlTBL Inner Join Settings on UrlTbl.Type = Settings.Pos" & i & "Type where Urltbl.type = settings.Pos" & i & "Type", CS)
[Code].....
View 5 Replies
Apr 14, 2009
Visual studio 2005 - vb.net..I have a user control on a form containing 15 combo boxes.All contain Y, N, and blank (for Yes, No, or blank) in the Items Collection property.Each of the combo boxes have a binding source to the same table, different fields.When you select a value Y, N, or blank for any of the fields and do a save, the values save while the application is open.Once you close and reopen, the values are gone.It appears the dataset does not recognize the change, so the values are not getting stored in the database table. Is there something I can do or put in one of the events that would identify this as a change.
View 3 Replies
Apr 17, 2010
I have a BindingList of transactions that I am binding to a DataGridView. The client now wants each row to have a sequential number. (1,2,3, etc).There could be hundreds of transactions. So is there an efficient way to assign a sequential number to each item in the bindingList?I know I could For/Next through and manually assign an incrementing index. But I am concerned about the performance when we process lots of transations.
View 1 Replies
Mar 31, 2009
Is this possible? Using VB.NET.
Can I do it in the footer maybe? Would that be the best way? Bind the footer to a datatable and throw some blank rows in there?
View 2 Replies
Jan 31, 2012
I have a gridview in asp.net/vb and it is bound to a list - so there's no standard sorting available. I've found this jQuery plugin for sorting tables: [URL]. The plugin requires <thead> and <tbody>. The problem is, that my gridview only renders the <tbody>.
I've already tried
DataList.UseAccessibleHeader = True
DataList.HeaderRow.TableSection = TableRowSection.TableHeader
But this changes nothing.
My gridview markup:
<asp:GridView runat="server" CssClass="grid" ID="DataList" AutoGenerateColumns="False" AllowSorting="True" ClientIDMode ="Static">
<Columns>
<asp:BoundField HeaderText="SomeHeaderText" DataField="SomeDataField" />
<asp:BoundField HeaderText="SomeHeaderText" DataField="SomeDataField" DataFormatString="{0:dd.MM.yyyy}" />
[Code] .....
View 1 Replies
Apr 25, 2009
For
Each
Item As
DataRowView In
lbOrdersNeedToBeVoided.Items
[code]....
View 6 Replies
Nov 11, 2010
I have a datagridview that is bound to a list object of a custom type via a BindingSource. From everything I've read, I should be able to click the column headers and the rows sort, This doesn't happen for me. Sortmode is set to automatic and the column headers aren't set to be used for selection so it should work.
I know that I could sort progamatticly but that seems a little bit of a waste given that I should just be able to do it by default.
View 2 Replies
May 19, 2009
I have a DataGridView object to which I've bound a list of objects (of type Asset) returned from a database query.I'm programming in VB using Visual Studio 2005.I want to grab two copies of the bound object (calling them oldAsset and newAsset) from the selected row in the DataGridView, update newAsset based on input from other controls on the form, and pass both oldAsset and newAsset to a function that will update the appropriate record in the DB.I try to grab the two copies like this:
Dim currentRow As DataGridViewRow = Me.AssetDataGridView.CurrentRow
Dim newAsset As Asset
newAsset = currentRow.DataBoundItem
[code]....
Opening a watch window on oldAsset and newAsset indicates that the appropriate values are pulled at this point. But when I try to change a property of just newAsset, like
newAsset.CurrentLocationID = cboLocations.SelectedValue
I see that the corresponding value in oldAsset is also changed. This is not what I want, but it's obviously what I'm telling the computer to do.
View 1 Replies
Oct 1, 2009
I'm looping all the properties in an object via reflection:
For Each p As PropertyInfo In values.[GetType]().GetProperties()
If p.CanRead Then
'Do stuff
End If
Next
how to determine whether the property in question is a generic List(Of T)? If it is I need to loop the list itself.
I've experimented with GetType and TypeOf but have not managed to get anything working.
To clarify, I want to keep this generic. I do not want to specify the type of T, I need to loop the list items and call the ToString method on each item. T could be one of a number of different types (application specific reference types). Is it possible to do this without specifying types?
(VB.NET 2005 with .Net 2.0)
View 3 Replies
Mar 16, 2011
This program is supposed to allow the user to check items in a checked list box. If the item is checked, it goes into the Completed List Box on the right. The program then adds the unchecked items to the Pending list box on the left. I keep getting placement values (e.g. O,1,2) instead of the strings (e.g. "Key Returned") in the list box results (see photo attached)
Public Class frmCheckOut
Dim i As Integer
Dim cleaning As String = "Cleaning Inspection"
Dim damage As String = "Damage Repaired"
[code].....
View 3 Replies
May 16, 2011
Another program I am working on for fun, I am basically shuffling a list inside a listbox, what I want to do is delete the rest but not sure how to go through with that. At the moment I have this: [code] Just contains the code, declarations outside weren't included.So anyway, once clicked, it will call on the function to basically shuffle in a for loop, I was wondering if I should (or how should) create another function and call it in the click button or have just a loop in the click button so it deletes half the list. What I am doing is I have 20 list of items, I want the program to shuffle the items and then deleting the lower 10, meaning, if I had 10 items and wanted 5 top, I'd want: 0, 1, 2, 3, 4 and deleting 5, 6, 7, 8, 9.
View 7 Replies
Jul 20, 2011
I am attempting to read the results from a SQL query into a List(Of) and I can see the List.count while adding items to the List increments, however in another part of my code when I am attempting to read the List the List.Count returns 0. My List is as follows:
[Code]...
View 4 Replies
May 26, 2010
I have a Form with listview of customer name. e.g. AAA, BBB, CCC, DDD, EEE. etc And 3 textboxes.
I want to be able to populate the textboxes when the user selects a customer. For example: If User selects AAA, textbox1.text = AAA, then if User selects CCC, textbox2.text = CCC etc.
I tired: (in a button on click event)
TextBox1.Text = Listview1.SelectedItems(0).Text
TextBox2.Text = Listview1.SelectedItems(1).Text
TextBox3.Text = Listview1.SelectedItems(2).Text
But this only works if the user selects 'all' 3 customers at once. I want to allow the User to populate each textboxes depending on how many they select eg. 'Upto' 3 customers .
View 3 Replies
