Forms :: Tab Key Does Not Set Combobox.selectedindex With Autocomplete
Aug 28, 2009
I am having a problem to get the results of a combobox when the user uses the tab key to exit the combobox. The combobox uses a database as the datasource. When the user uses the mouse to click on the selection the selectedindex is set proprerly, however when the user will enter some text and presses the tab key, selectedindex is set to -1.
I have attached some test code to duplicate the issue.
Imports System.Data.OleDb
Public Class Form1
Protected dvNames As DataView
Dim conDBTest As OleDbConnection
[Code]....
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Feb 16, 2010
In a combobox populated by a DataTable I am having two issues!The SelectedIndex property will not set 1. Either by integer 2. Or by FindString
[code]...
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Aug 13, 2010
I have the following code;
txtprojnameupdt.Text = txtProjname.Text
cmbactiveproj.SelectedIndex = cmbactiveproj.FindStringExact(Replace(txtprojnameupdt.Text, "'", "''"))
[code].....
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Nov 23, 2010
My understanding is that if you set a ComboBoxes .SelectedIndex to -1, it should unselect any items in the ComboBox and show nothing in the ComboBox text. This is not happening. How can I get that to happen?I have 10 items in the Combobox. Let's say the index is set to number 5 and the text says "MasterCard". Now through code I want to set it to -1 and the text should show nothing. How can I do this?
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Nov 3, 2010
The adultcombobox & childcombobox have value from 1 to 10, and none.I try put it in Do Loop like the code below, but the total price not come up so well, so I think I am having problem with the Do Loop and the Payment method.One more thing, do I need to Tryparse the combobox and use the selectedIndex ?
[Code]...
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Apr 19, 2012
I create several controls dynamically with the function createControl which returns a control
....
ElseIf objName = "COMBO" Then
Dim cbo As New ComboBox
[Code].....
I know that my combobox has 3 items (in that case that the value was 2) I found that I cannot call selectedIndex before create the combobox, but I am kind of confuse here. I tried also to add it to the panel and to the tablelayoutpanel and then set the selectedIndex but I get the same error.
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Jan 29, 2011
I'm having a problem setting the SelectedIndex property of two comboboxes.
There names are,
LateralStartComboBox
LateralEndComboBox
When I run the code listed below, both of the comboboxes display list item number 6. No matter how I try to set the selectedindex their text matches. [Code]
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Feb 25, 2010
I have in my database a smallint field with 2 values 0/1,is it possible to bind that field to a combobox with 2 values "Yes" "No" without creating another datatable for Yes/No values or to modify sql query to bring Yes/No instead 0/1 something like binding to SelectedIndex ?
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Feb 15, 2012
Is it at all possible to reset the existing set selected index properties for a combo box?or example if the user selects the first selected index option an action occurs, the combo box then loads in another set of options and the selected index properties are then resetIf the user then selects the first option in the combo box again, it will perform a different action to the previous one.
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Apr 24, 2012
I'm working with a ComboBox which has 14 items.
Using the following code I got a problem
vb
If Me.ComboBox1.SelectedIndex = 0 Then MsgBox("item 1")ElseIf Me.ComboBox1.SelectedIndex = 1 Then MsgBox("item 2") '...ElseIf Me.ComboBox1.SelectedIndex = 9 Then MsgBox("item 9") ElseIf Me.ComboBox1.SelectedIndex = 10 Then MsgBox("item 10") '...End If
The problem is that after the SelectedIndex = 9 it won't read properly the SelectedIndex = 10, it seems like it consider only the first number (1) instead of the whole one (10). In fact get the same result as if it was SelectedIndex = 1
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Sep 22, 2010
I'm currently trying to work with the DataGridView object in Visual Studio 2010. Everything's going smoothly, except that I cannot figure out how to grab the currently selected index of a combobox on the datagridview.
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May 17, 2011
I need a complete code of how to AutoComplete ComboBox
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Dec 6, 2011
could not get selected item text in combobox selectedindex changed event return value is "System.Data.DataRowView"..[code]want to get the value from the combobox but i always getting ""System.Data.DataRowView".
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May 13, 2010
I have a DataGridView on a windows form.
The 4th column is a combo box column.
Now what I want to do is capture the event every time a value is changed in the combo box drop down (selectedindexchanged). When the index is changed, I want to grab the row number, and then I will grab the value of the now selectedindex and do some database updates with it.
I currently have tried to put together an event grabber when the combo box is changed, however it doesn't work correctly.
My code is:
Private Sub dgvRooms_EditingControlShowing(ByVal sender As Object, _
ByVal e As DataGridViewEditingControlShowingEventArgs) _
Handles dgvRooms.EditingControlShowing
[Code].....
I put in a message box to check that it was capturing the event. I then noticed that it captures it more than once when you change the value.
The problem is when I go to click the down arrow on the row, the event is run once (message box show). Then you have to click a second time (event is run again with message box) before it shows the drop down list.
Then when you click on the value you wish in the drop down box it shows the message box (the only time I want it to run).
Then when I leave that row, it shows the message box two more times.
Effectively it goes to update the data 5 times, I only want to do it once.
I can not there is a pencil editing icon when you click on a row to the far left, and it appears when you leave the row, after already clicking on your value, it then checks on row leave that the values havn't changed, hence it runs two more times.
How do I make it so it only runs once on the value being changed?
Is there a way to disable the pencil editing, but still enable the combo box column to work? (be clickable and choose an option)
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Aug 4, 2011
Im currently debugging my application to found out why it's running a bit slow, when I put breakpoint where i populate one of the application combobox it's run fast but after i populate it and when I'm trying to set the its selectedindex to zero the program halt for about 2 second.. this is the line where the program get stuck for 2 seconds:
[code]...
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Feb 21, 2012
I have a ComboBox which content might change. The issue is when the content is changed, 1) i lose the previous selectedIndex, and 2) SelectedIndex is set to -1. I would like an MVVM solution, not some solution involving code-behind. I can have the SelectedIndex set to 0 on content change, but -1 is not a valid value for my model.
What i did as a 'trick' was to have the setter of the property bound to SelectedIndex to set the value to 0 when the value is set to -1. So now i don't have incorrect value in my model. But the ComboBox does not display the "0"th item, rather an empty box.
What could i do to have my ComboBox display the first item (index 0) when its content changes ?
[Code]...
Weeks is a Notifying property that is a list of strings. It is changed when i change the Year property.WeekNumber is a notifying property of type integer. Now when it is set to -1, i set the corresponding private member to 0 to avoid wrong value in my model.
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Nov 2, 2011
I'm struggling to meet a demand from my supervisors.Basically there are places in our project where there is a big selection of options. The most concrete example is choosing a city in the world. The items are hundreds of thousands.Using standard winforms controls and properties, one can search through a list fast.The problem is that we're using a concatenation of city&district name for all the items. Essentially PREFIX autotomplete works but does not work as needed. The task is to filter and show items by any given string in any part of the item. Essentially a FULL TEXT search in the combobox.Does anyone have an idea about switching autocomplete sources in runtime relatively qiuckly and handling the suggest/suggestappend event?
[Code]...
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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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Aug 7, 2011
How to make a combobox autocomplete?
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Nov 2, 2010
I have tried searching on if it is capable to do autocomplete in a combobox in the datagridview control. I was planning to use the combobox in the grid itself. There is a property to set autocomplete true/false but I cannot get the cb to let me enter text to find. It only selects on the first character of items in the list.
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Aug 24, 2011
I have a ComboBox which is bound with a DataSource from (obviously) a Database. However, there are 659 different entries inside this Database and I was hoping to tack on AutoComplete.
I tried setting the Source to the ListItems since, after initialization and the data is bound, all the items necessary are in fact inside the ComboBox so I had assumed that it would pick that up. I was wrong. I tried using a Custom source but VS errored out saying that I couldn't do that since the ComboBox was bound.
My question is, how can I utilize AutoComplete's "Suggest" mode with a bound ComboBox?
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May 21, 2012
I am having issues with a combobox set to:
AutoCompleteMode = Append, AutoCompleteSource = ListItems.
Example: Items in the combo are: "Average", "Good", "Poor". If "Average" is selected in the combo, then I type "G", "Good" will autocomplete. But if "Average" is selected, tab out of the control, then tab back into the control, then I type "A" nothing is autocompleted. It just shows "A" in the combo.
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Jun 20, 2011
I have problem with my combobox and suggest list poping up. Im taking data from datatable then i start to type and list is poping up if i select item form that list by moving arrows up and down and then press TAB than all is working ok but if I select item by clicking mouse then the item I choose doesn't show text but empty field.
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Jun 11, 2009
Is there any way to get the ComboBox SelectedIndex based on SelectedValue when Datasource property is set with DisplayMember and ValueMember?
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Aug 3, 2010
How to make a combobox only list based on user's input via autocomplete?For example, if user input "A" the combobox only lists all names start letter "A".If user input "AM" the combobox only lists all names start first two letter as "AM" and so on.
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Mar 8, 2010
I am trying to read values from textbox controls and combobox controls on a form. Reading the values from textbox controls is working fine but I cannot read from the 3 combo boxes. Here is some simplified code of what I am trying to do.
[Code]....
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May 20, 2009
We're using the Autocomplete functionality for some textboxes. We populate the AutoCompleteCustomSource with data from a database query using a datareader loop. The data in the query is sorted by 'recently used', the most recently used entries are at the top.
Let's say the sequence op the AutoCompleteCustomSource is
'AM1900'
'AF2000'
'AD1950'
After typing an 'A' in the textbox, I would expect the Suggested (or Appended) value to be 'AM1900'. The suggested value however is always the first item from an alphabetically sorted
AutoCompleteCustomSource list (i.e. 'AD1950')
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Jun 18, 2010
I am creatting an windows application software in which many controls like Buttons, textBox, combobox are remain same in 12 different form. In this 12 diff form the activity of those controls will remain same.The scenareo id
1. I have 12 forms.
2. Each form containing 3 labels (Country, State, City). These labels indicates 3 combobox from which we can select location.
3. Now I need to use these 3 controls in all 12 forms with same activity.
4. When I change forms to another, these buttons shud remain same.
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Feb 10, 2009
I am using .net 2008. I have placed a ComboBox on the form and I do not have an additem.
[Code]...
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Jan 28, 2012
i have 2 forms, in form1 i have 10 textboxes and in form2 i have a combobox. I need that when i press a button, the text in each textbox (in form 1)appears as a choice in combobox in form 2). How can i do this?
i suppose i have to set form 1 as public..
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