Combobox Loses Text Value
Mar 1, 2011
I am using VS 2008 to develop a VB application which has a tabcontrol. On the 3rd tabpage is a combobox, set with DropDownStyle as "DropDown" to allow free text to be entered as well as selecting from the loaded items. My application allows for values to be saved to disk and reloaded.
What I'm finding is that when then application is 1st started, if the tabpage containing the combobox has not yet been accessed, and a value is loaded from disk by the application into the combox's text property ( I have verified this using by Debug.Print statement, and using a Watch), when the tabpage containing the combobox is selected (I add a break on the "TabControl1_SelectedIndexChanged" event to check the text value) the text value is cleared to equal "".
[Code]...
View 2 Replies
ADVERTISEMENT
May 25, 2011
I am making a custom button control and am having some difficulty with my Text property. Anything I type in only stays while the form designer window is open. When I close the form designer and reopen it, my Text property resets to "". Also if I run the program, it loses the value entered at design time.
I also have an Image property for my control which is working just fine.
Here's some of my code:
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Windows.Forms
[Code]....
View 2 Replies
Feb 7, 2009
i wan to display the text from combobox into the textbox and clear the combobox text when click on the button.But when i select another text from the combobox and click the button, the textbox display and overwrite the previous text.How can i do so that when click, textbox display text from combobox and clear combobox text. Then click again, display the new text at 2nd line of the textbox without deleting the previous text?
View 5 Replies
Feb 20, 2012
I have a tab control application, each tab loads a particular user control and each of those user controls will then add other user controls that are used amongst other the user controls. For example, I have an "ucQuotes" page and an "ucInventory" page, when the specific tab is selected, the "uc****" user control is loaded on that page, and in the case of "ucQuotes" and "ucInventory" they both use a control called "ucPartNumber"; a user control consisting of a combobox, textbox, and button. I have no issues reusing the shared user controls, in this case. My problem arises with my "ucQuickPrice" control, as it is always present at the bottom of the tab control form (separate from the tabcontrol, but on the same form), and it too uses ucPartnumber.
Here's my issue, as I type into the ucPartnumber combobox, the text I type does not appear in the combobox, it appears in the textbox of the ucPartnumber control that is being used on the tabcontrol page. There are no shared instances of ucPartNumber, nor do I have this issue between typing on one tab page and the text showing on the user control of another tab page.I tried just creating the ucPartNumber controls on the ucQuickPrice control, not adding a new instance of ucPartnumber on the .Load event, and the issue persists.
The combobox(s) in question are bound programmatically with about 40,000 items, ".datasource = dataset.tablename" not to a bindingsource. Autocomplete is set to none, I added code to utilize tool tips and the basic combobox filtering functionality. Is this a bug, or is there something I'm neglecting? I'm about 95% complete with this application, and this just happened today. I made the decision, to just reuse the ucPartNumber control on the ucQuickPrice control (originallly it's size and orientation would not fit, but I added some coding to detect what parent is adding ucPartNumber and to change its appearance accordingly). Before, I made this change, I did not have this problem. And, in trying to go back to how I had things set up before the change, the problem will not go away. if the whole control within a control verbage I used is a bit confusing, let me know and I'll try to better explain what is happening. At this point, I'm going to close and reopen vbexpress, as when I started this ordeal, vb started acting weird and wanted me to save all my work, it usually does this before locking up.
View 2 Replies
Aug 10, 2009
I had added the items
1
2
3 to the combobox.
Then I gave the "Select" to the text of the combobox.
How can I able to reset combobox to select the text("Select").
I had tried by giving -1 to the SelectedIndex. But it gives only Empty.
This is for VB.NET Windows Application
I have given an Image for your reference
Image path for the reference [URL]
View 2 Replies
Mar 26, 2011
When I will click the suggested text shown in the combobox it will disappear.My Combobox btw is connected in a database.If I type Kev then kevin and kevsky will show at its suggestion then when I will click any of it ,the combobox text will be empty or will clear what I typed ("Kev") and will not show what I clicked.[code]
View 7 Replies
Aug 11, 2009
I had added the items 1 2 3 to the combobox.
Then I gave the "Select" to the text of the combobox.
How can I able to reset combobox to select the text("Select").
I had tried by giving -1 to the SelectedIndex. But it gives only Empty.
This is for VB.NET Windows Application
View 8 Replies
Jun 19, 2009
I have a combobox..... When a user clicks on the list inside the combobox my webbrowser opens to the selected items website.how to make the combobox go back to the original text of the combobox?
Example: Combobox list
---- Select Item ----
Royals
Mets
[code]....
When the user see's the screen the ---- Select Item ---- is visible. When a user clicks a teams name it opens the teams website and the name stays in the box. I want it to go back to ---- Select Item ---- immediately after they click a list item.
View 15 Replies
Jun 22, 2010
Brand new to VB 2008 Express, but have done some work in VB 6. Not sure what I'm missing, but here goes. I have two comboboxes linked to an Access 2007 database. One box lists the names of the States in the US.
This is what I used for the Table Adapter Configuration Wizard for the combobox "State" SELECT ST_UID, ST_NAME FROM STATE
For the combobox County I used: SELECT ST_UID, CTY_NAME FROM COUNTY ST_UID is an Integer.
I created a label with a bound value to STATE.ST_UID so that when a user selects the name of a state from the State box the appropriate ST_UID populates the label, (i.e, California has an ST_UID = 5).
The problem is when a state is selected, I only want the Counties for that state to appear in the County box, i.e, COUNTY.ST_UID = 5 if California is the selected state.
I then tried to convert the value in the st_uid label to an integer:
CODE:
This is what I last tried when again using the Table Adapter Configuration Wizard for the table that populates the County box: SELECT ST_UID, CNTY_NAME FROM COUNTY Where ST_UID = 'StUID' Order By st_uid, cnty_name
What I'm getting is a "Data type mismatch in criteria expression." I'm sure my error is something so simple.
View 2 Replies
Jun 22, 2010
I sometimes need to retain the values of my variable for a very long time as the same value will get used over and over again until it gets referenced again somewhere down the line and then it changes it value.
So is it possible for a variable to never lose its value even when a form is closed or a sub finishes?
View 9 Replies
Apr 19, 2011
Working on supporting a application that connects a digitizer pad to a application. The client said that when the screen saver activates on their computers the digitizer pad looses connectivity and when the screen saver is turned off the pad will not re-sync.Where might i find how to resolve this? We are using the USBAPI provided in visual Basic.net. should we build in consideration for this, or should the API understand connectivity?
View 4 Replies
Dec 22, 2011
I am making a webbrowser and it has a history listbox(so it is always changing). I would like it so that if you double click on a listbox item or click on button5, axwebbrowser1 will goto the selected item, then the history form will close. [code]
View 16 Replies
Jan 4, 2010
I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
[Code]...
View 7 Replies
Jan 22, 2010
i have 2 forms.in form1: i have 1 combobox in form2: i have 1 textbox and 1 button...I want to make in form2 when i enter some text in the textbox and press the button the text to be added in form1 combobox
View 2 Replies
Aug 19, 2011
I've got a DataGridView that has a DataTable as the DataSource. If the user has rows selected in the DataGridView, calling AcceptChanges on the DataTable will clear the selection (highlight) from those rows. Can this be prevented?
View 6 Replies
Jun 3, 2009
I'm writing a custom user control for my asp.net site, for storing datetimes. It has two properties:
Private _includeTime As Boolean
Private _value As DateTime = Nothing
Public Property IncludeTime() As Boolean
[code]....
I call my custom control in this way:
<my:DateTimeInput runat="server" includetime="true" ID="txtWhen" />
This sets the includetime property correctly.In my backend code I also do this on page_load:
txtWhen.SelectedDateTime = now
When I step through with the debugger, I see that the property gets set, BUT when the page_load of the control itself loads, the property value is reset to nothing!
The page_load of the control:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
lbltime.Visible = IncludeTime
If SelectedDateTime().CompareTo(Nothing) > 0 Then
[code]....
View 2 Replies
May 7, 2011
I am working on login and registration page in vb express 2010. I have connected access 2007 database with my project and when I register as a user, it stores information to the database successfully and I can log in with that id as well. But when I close that project and reopen it, the same exact id won't work and the information in the database disappears.
View 1 Replies
Feb 13, 2012
I have a form which contains a progressbar and a Listbox which update as the code runs through and performs some sometimes time-consuming calculations.
At one point in the code, it breaks to ask the user to enter a number using :
Usedefault = MsgBox("Do you want to use the default value of " & Default_No & "?", vbYesNo)
If Usedefault = vbNo Then
[Code].....
this works fine but I find that once the data entry is complete, and the code continues to run, the form loses focus and the progressbar and the Listbox updates cannot be seen until the code finished its calculations.
View 1 Replies
Dec 21, 2010
Graphics.DrawImage loses resolution
View 13 Replies
May 4, 2011
I have a form with a "print" toolstrip button. When I click that button I run the code shown below. The print dialog box appears. The title is dark blue seeming to indicate it has focus. The main form is lighter blue indicating it does not have focus. But hovering over the "Print" button (or the cancel button) does not cause it to change color. If you click on the print button, then the color changes and the second click causes the appropriate action. Same with the cancel button. If you click on the dialog label or on the main form the only thing that happens is the print button will then become "active" and a click there then works. If you click on the main form once, nothing happens, but if you click on it a second time you get the "bonk" sound indicating you ae clicking on the wron modal. As if this isn't strange enough, this action just started recently. I made a few unrelated (as far as I can tell) changes, and discovered this action.[code]....
View 15 Replies
Jun 22, 2011
when calling a webmethod
[WebMethod]
public Profile synchronize(string MID, DeviceUploadData data)
The object DeviceUploadData has many properties, and a few of them are array's. My question is about the array specifically. It loses it's value once it's received on the webmethod end.This is the property inside DeviceUploadData
Private data() As DataObject
Public Property Data() As DataObject()
Get
[code]....
So the DataObject is populated with data, then once passed, on the other end, some of the DataObject properties are no longer populated. I haven't included the other properties in this example.
View 1 Replies
May 26, 2010
I have a listbox on a form and when the user selects a value and the listbox loses focus I want to validate the value the user chose. How do I call my function once the listbox loses focus?
I tried using a custom validator but it gives me an object is missing error.
Mike
View 9 Replies
Mar 13, 2011
Some time back I posted some questions concerning printing a RTB. I got some great answers and have a RichTeckBoxPrintCtrl based on KB811401 and lots of from this forum. It works great. I can enter text and changed fonts in any selected portions and it prints just like it looks. But my form also has some plain text boxes for the user to fill in some required fields. The RTB is for additional comments. I want to print the plain text boxes in a formatted method followed by the data in the RTB using my RTBPrintCtrl.
View 6 Replies
Jul 22, 2010
when clicking on the start button in the code below, the form seems to lose focus and I need to click the stop button twice to stop the count. (First click to activate the form, second to click the button) Can someone please explain this behavior or offer a better alternative?
[Code]...
View 1 Replies
Jun 19, 2012
I'm using a TabStrip control in my VB6 app (mscomctl.ocx).(Annotation: to use the TabStrip control add the component: Microsoft Windows Common Controls 6.0(SP6) )When hightlighting e.g. the 2nd tab ...
TabStrip1.Tabs(2).HighLighted = True
and removing the tab's caption
TabStrip1.Tabs(2).Caption= ""
.. tab2 loses its hightlight !!
To prevent tab losing focus I fixed it with the following code:
For Each e In TabStrip1.Tabs
If e.HighLighted = True Then
e.HighLighted = True
End If
Next
Is it a known bug? Here is my vb6 sample project showing how the tab loses the highlight if the tab's caption is removed.
View 6 Replies
Dec 1, 2008
Is there anyway to put some code in to load a certain Gif image when the user wins or loses? i currently have this in place
[Code]...
View 2 Replies
Oct 13, 2009
The following (abysmal) code demonstrates how standard serialize/de-serialize in VB loses the CR when on de-serialize. This can be overcome by applying 'XmlAttribute(DataType:="string")' to Description. Why does it do this? I would like to fix this without applying a 'LF' -> 'CR''LF' in every affected class. This is fixing a bug in existing XML files generated without the XmlAttribute!
Imports System.Xml.Serialization
Imports System.Xml
Imports System.IO
[code]....
View 1 Replies
Mar 18, 2011
I have a richtextbox, when I leave it for example to go to another panel where I want to manipulate the selected text I can no longer see the selected text. Is there a way to make it still show the highlight?
View 1 Replies
Mar 8, 2009
I have a page that contains some dynamically created controls (TextBox and DropDownList). When a postback occurs, the TextBoxes keep their values, but the DropDownLists lose their ListItems. This is quite confusing, since the page level DropDownList also keeps its ListItems.
<%@ Page Language="VB"%>
<script runat="server">
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
View 5 Replies
Apr 22, 2012
I have the following gridview that is inside an updatepanel:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="ButtonAdd" runat="server" OnClick="ButtonAdd_Click" Text="Novo Artigo" />
[code]....
View 1 Replies
