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]
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]...
I have a DataGridViewComboBoxColumn that I allow the user to add new items to by typing in the ComboBox and hitting the 'Enter' key. That triggers CellValidating and I do the adding there by the following:
cmbColumn.Items.Add(e.FormattedValue)
All this works well, except that it leaves the DataGridViewComboBoxColumn blank. How can I set the DataGridViewComboBoxColumn to display the e.FormattedValue?
adding to the binding source then setting the combobox to selectedIndex of newly added row is not working.the new row is in there but it does not set the selectedIndex to the specified index. but if I run the code a second time it selects it.what can i do to make sure the combo uses the specified index?
Dim drv As DataRowView = CType(Dispatch.M8CustomersBindingSource.AddNew(), DataRowView)
drv("custID") = "999999"
drv("CustomerName") = "Select Customer"
[code].....
I have the following code;
txtprojnameupdt.Text = txtProjname.Text
cmbactiveproj.SelectedIndex = cmbactiveproj.FindStringExact(Replace(txtprojnameupdt.Text, "'", "''"))
[code].....
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?
View 15 RepliesThe 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]...
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.
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]....
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 ?
View 9 RepliesIs 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.
View 2 RepliesI'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
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.
View 5 Repliescould 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".
View 3 RepliesI 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)
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.
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]...
Is there any way to get the ComboBox SelectedIndex based on SelectedValue when Datasource property is set with DisplayMember and ValueMember?
View 1 RepliesI have a typical databound Form with a bound ComboBox bound on the form Load event.I have a typical BindingSource and BindingNavigator Control with an "AddNew" button.When a new record is added to the dataentry form (i.e. not the combobox) I intend the combobox to default to the first value in the list by setting...
mycombo.selectedindex = 0
I have this in the BindingNavigatorAddNewItem_Click event but it has no effect! I also tried placing mycombo.selectedindex = 0 in the BindingSource "AddingNew" event but this also has no effect. I have discovered that the "selectedindex" is somehow inexplicably changing itself back to -1 As an experiment I added a button to the form and on the click event pasted "mycombo.selectedindex = 1".I added a newrecord then clicked this button and the combobox updated as expected. But I wont this to work as I'm adding a record!Is there a particular event where I should set mycombo.selectedindex = 1 apart from the two I mentioned?
I have ComboBoxes on my form that have two functions.Editable / AutoComplete - SuggestAppend Non Editable. If the ComboBox is not editable, I am looking to set the SelectedIndex = 0 but not to set any SelectedIndex if the ComboBox is editable/AutoComplete. I have the following in my code and all the values are right; however, all ComboBoxes are showing a default item regardless. Any ideas? [Code]
View 3 RepliesI have a combo box that i want a user to be able to start typing in a location and then have the valid values that match what the user is typing displayed below.The problem is i have about a 1000 locations that need to go into the AutoCompleteSource, is it possible to save all these locations into a text file and then have the text that is typed into the combo box compared aginst this text file?
View 6 RepliesI've made a ComboBox in my form where I add some classes of my own design. Unfortunately they get a generic name when they are displayed in the ComboBox. How can I set their names in the Form?
Class Cabel
Public Sub New(ByVal IName As String, ByVal IConstant As Double)
Name = IName
Constant = IConstant
[Code] .....
cbCurrentCabel and cbNewCabel are the names of my two combiboxes
I can set the value of a combobox on a form by using ComboBoxName.Text = "SomeText" but how can I do this if the combo box is within a datagridview? When I type DataGridViewComboBox the .text property is not listed. If I try to force it, I get an error.
View 3 RepliesI programatically / runtime created combobox and bind it to a datasource but can not set its default value. Since I am using the Handler of SelectedValueChanged, this is causing the program to mis-fire. Here is the code I am using.
Public WithEvents T_combo as ComboBox
'dictionary holds data to use in other parts of program
Dim T_Dict As New Dictionary(Of String, String)
[Code].....
I had following form.How to store and retrieve the user setting? So the next time the app will run the information as had saved? I had found related example,but not very understand about it.[URL]The setting i want to save is background image from resource, forecolor, checkbox and trackbar.
View 1 RepliesOk, I'm trying to set a value to each item in my combobox, but I don't know how. Lets say I have ComboBox1 that contains the letter A-Z, 26 items, I would want to set each letter a specific number, then use that number for something else. Like, if I set the letter A to equal the number 4, and the user has chosen A in the combo, I could do something like make a Msgbox say that value(4). Does that make sense?
View 3 RepliesI have a combobox which is populated from a datatable.
I hae a list of values also and when one is selected i would like it to highlight the correct value in the combo box and have been trying to no avail.
my code is
Dim searchrow() As DataRow
Dim searchrow2() As DataRow
Dim cellvalue As String = dgvStockComps.Rows(e.RowIndex).Cells(1).Value
[Code]....
eveytime i sellect a value in my list nothing happejns to my combo box (i.e. it goes blank and it doesnt show the sleected item like i would like!)
I have a datagridview which has mixed values in one column. Is there a way to add a control into the Value cell depending on the row? For example, for Name and Age row, it will be a regulator textbox but for the Products row, I want to be able to add a combobox.
View 2 RepliesI can't seem to set the selected index or selected value of a DataGridView combobox when loading data from a database. My DGV has two combobox columns which are bound to datatables. The DGV itself is not bound initially. After adding a row, I select a value from each combobox which then populates the rest of the cells in the row. I'm using the EditingControlShowing event to add an eventhandler to catch the SelectedIndexChange of the combo boxes. This all works as needed. My issue comes when populating the DGV with saved data, I need to add the rows and set the selected index and/or selected value of each combo box. I've searched through various forums and articles for the last week with no luck.
I'm using VS2008 sp1, .NET 3.5 sp1 and SQL 2005 sp2 Express.
I have a combobox on a form which has data bound items, the datasource is a dataset called ShiftType that was created using the new data source wizard. The data consists of three columns ID, Name ,Description. Name is the display Member and ID is the value member. This form is called from a different form, a variable containing the shifttypeid is passed as a parameter. I am able to get this parameter across fine.
What I would like to be able to do is, match this parameter with the data in the dataset and find the row index and set that item as the selected item of the combo box. I am confused as to how to proceed with it. Also, I would like to add an extra item to the dataset apart from the items obtained from the database. This represents "NONE", i.e. so if the user doesn't want to choose a shift type they can use the None item. How do i add this without having to add a dummy value in the database.
