VS 2005 Combobox Selection Index Change?

Nov 17, 2009

I am using the following code to populate a picturebox at form event load

c
Me.PictureBox1.Image = Image.FromFile(String.Format("{0}{1}.jpg", Subject_Values.TextBox1.Text, Me.list1_MLStxt.Text))

[code].....

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VS 2005 Make The Calculate Funtion Work Up Selection Change In Combobox?

Nov 21, 2009

I have a calculate function that adds twenty text boxes together a+b, etc... 20 +20, B changes value when a selection in combobx is changed, how can i make the calculate funtion work up selection change in combobox ? You would think the selection change or index change , but that doesnt work because the tetbox doesnt actually get the new value till after the combo selection is made, so you actually have to go and make the selection twice I know i can put the code in the textbox value change , but i dont want to do that for 20 text boxes and i am assuming there must be a BETTER way?

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Forms :: Clear The Dgv When The User Blanks The Combobox Without Necessarily Changing The Selection Index?

Oct 25, 2010

I have just realised that ComboBoxes don't have a Change event. I have a combobox filled with a few items, eg. Bakery, Deli, Fruit & Veg, etc. Choose one of these items, all the related items show in the dgv. However, when I blank the text in the Combobox (press Delete key whilst Combobox has the focus), what event fires so I can blank the dgv? The combobox does not contain a Blank item. Even if it does, the Blank item only fires the ComboBox1_SelectedIndexChanged when the user scrolls down to, or clicks on, the blank value.

I want to clear the dgv when the user blanks the combobox without necessarily changing the selection index.

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Change Textbox Depend On Selection Change In ComboBox Column Of Datagridview?

Dec 15, 2011

I have a DGV I am working on, and I have many columns.

For example I have Columns colcase(Combobox), colreportTime(Time)

the combox shows 4 cases {A,B,C,D}

what I need to do is if the user select "C"

the the colreporttime will show the time of this change unless the old value is C

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Fill A ComboBox On The Selection Change From Second ComboBox?

Jan 15, 2012

I have two comboBoxes, one is CountryCombo and second is StateCombo.What I want is the that when i the clicks country combo and select a one country then the States of that the country should get populated in the State Combo.I have tried things many many many but nothing working. Below is my code of how my CountryCombo is getting filled.

query="select CountryName from CountryMaster"
if dr.hasRows()
{[code]......

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Change Text In Combobox When User Changes Selection?

Aug 19, 2011

I have a combobox on a form with the dropdownstyle set to drop down. Users can either salect a value from the list, or type in any value they wish. This all works fine. However, when one particular item in the list is selected I wish to set a different value. Unfortunately I don't appear to be able to set the combobox Text property from within any of the events that fire when the selected item is changed.

[Code]...

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Datagridview Combobox Dropdown Selection Change?

Apr 20, 2009

how can I make program using vb 2005 that will dropdown the datagridview combobox and display to the datagridview textbox everytime the combobox selection change or when you choose the data.The mousemove is not perfect because when the dropdown combobox length more than the datagridview, the mousemove will not work even other features of datagridview.

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Make A Combobox Selection Change Table I Use For A Subform?

Jul 14, 2009

I have a combobox linked to a table Checklist (ID, Checklistname, and several multivalued fields). I want to have my subform display data from different tables based on my combobox selection "checklistname". All the tables are imported Excel files with the same fields and field types (ie. Discrepancy, reference, reference paragraph, category). How do I get my subform to requery based on the combobox selection? Or is there another method when working with "outside tables"? Import good/bad? Make new table? I have about 20 tables, if importing but only need particular data to save/store in my main table, and I need to know which table it came from.

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VS 2005 Selection Of Databound Combobox Is Locking?

Mar 23, 2011

here is the situation i am using the combobox with the databound dataset..i produce two combobox for that one field because i need to display the selected data in separate tabs... the combobox 1 is working perfectly i can select all data i want to but in the combobox 2 i can only see those data and when i select data on it, it will not display the selected data.. it still remain on the previous displayed data...

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Make A Selection From ComboBox The CellValue Change Event Is Not Triggered

Mar 3, 2011

On my DataGridView one of the columns is set to a ComboBox. When I make a selection from this ComboBox the CellValue change Event is not triggered. What event is triggered when I do the selection?

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Combobox Index Change On Form Close?

Dec 16, 2010

I have a combo boxthat holds a list of values that are a custom object and when a value is selected a few text boxes are loaded with data. I use the SelectedIndexChanged Event. Works wonderfully.I noticed that this even is also called when a user clicks the 'x' to close the form. I just wanted to understand the logic behind that. I get that the technically index is changing since the cbobox value is being set to nothing, but to me that just seems a little inefficient.

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Winforms - .net, Combobox.datasource Will Change Selected Index?

Mar 1, 2012

Let me try to describe my problems in the simplest way: I have combobox1 and combobox2. I hope to achieve two things: Combox1 is bound to list1 (a list of string). When a user selects an item in list1, list2 (a list of string) will be obtained from database and combobox is bound to list2.If user specifies text1 in combobox1 and text2 in combobox2, then these two values will be shown in the comboboxes regardless of the bound lists.

[Code]...

So the results of above code is that goal 1 is achieved, but goal 2 is never achieved. combobox1.selected index is always 0 and combobox2.selected index is always 0 too.

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VS 2005 Set The Combobox Index Based On Value

Aug 15, 2010

How should i set the combobox selected index based on the "value". The following is the sample code. I am getting an error on the button click event.

[Code]...

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VS 2005 Save Settings Database Connection And ComboBox Selection?

Jan 15, 2010

I have a program that reads a database file(.csv or.Txt) then allows user to select data from 6 different comboxes and taext boxes are then populated based on the selection made from combobox

I would like to be able to give the user the option to save their settings so next time the program is open it will connect to the same database as the last connection and also have comboboxes go to the last selection Do I have to create a save setting value for each combobox? and the connection string?

is there a simple way to just save everything? so when the program is open it goes back to the last time it was open.

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VS 2005 : Change The Selected Cell Round And Its Selection Too?

Jan 11, 2010

how to change the selected cell round and its selection too?

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VS 2005 Prevent Index Change In List Box On Keypress

Apr 16, 2010

I'm having a problem with my listbox control. I am trying to handle all the keypress events for the listbox and changing the index to the item I want as they type. But the problem is the listbox changes the index to the last key they hit. Here is what's going on.

[Code]...

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Update Source Combobox To Printer Combobox Selection?

Mar 27, 2011

Is there a way to update source combobox to printer combobox selection?So going from printer1 to printer2 the source will update according to what that printer has to offer.

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VS 2005 Error:Index Was Out Of Range. Must Be Non-negative And Less Than The Size Of The Collection.Parameter Name: Index

Oct 23, 2009

Getting error filling grid view from reading through data table:

Dim myDataTable As DataTable = myDataSet.Tables("SunTrust")
Dim myRow As DataRow
Dim i As Integer = 1
Try

[code]....

Error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index

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Combobox - When Select A Value From The Combobox The Selection Won't Validate?

Feb 22, 2012

I'm having a problem with combo boxes. I usually use Java and it's been awhile since I used VB but I never remember having this much difficulty.My application is using an SDF file. From Data Sources, I drag the details on one of my Tables to my Form to get all of the fields. Three of them are comboboxes. Each of the three is an INT64 and each corresponds to a primary key in a different table. I click the tasks button on a combobox and for data source I select the appropriate table that has the data to go with the combobox, for display member I select the field that I want users to see, and for value member I select the primary key. Then I run a quick test and start the app, open the form, and add a new record. When I select a value from the combobox the selection won't validate because it doesn't think it's an INT64 like it should be. It seems to be using the display member as the actual value instead because if I change display member to the primary everything works great.

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Asp.net - Get Selected Row Index Of Dynamic Dropdown List Selection?

May 29, 2009

I know the question is a little choppy and perhaps misleading,but I have a gridview with dropdownlists on the rows. I created an AddHandler and a Delegate for the SelectedIndexChanged and it gets to the sub. Here is the code for that:

AddHandler ddlmgr.SelectedIndexChanged, AddressOf ddlmgr_SelectedIndexChanged
Public Delegate Sub DropDownList_SelectedIndexChanged(ByVal sender As Object, ByVal e As DropDownList_SelectedIndexChanged)

Protected Sub ddlmgr_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)

End Sub How can i get the row's Id if GridView_RowCommand is not called?

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Asp.net - List Box Selected Index - Various Items Inserted Depending On The User Selection

Jan 18, 2012

I seem to be having issues with the selected index on a list box.

The list box is having various items inserted depending on the user selection. An example would be:

LiIndex = ListBox1.Items.Count
ListBox1.Items.Insert(LiIndex, "Item1")

LiIndex = ListBox1.Items.Count
ListBox1.Items.Insert(LiIndex, "AND")

[CODE]......................

This all work and displays without a problem. The issue I have is if I select the second of the two AND's. If I click the second "AND" in the list and then a button to fire a method, the selected index is always the index of the first "AND". Dim listIndex as integer = ListBox1.SelectedIndex

I can't work out why, the listbox itself will always show the second one as selected, but the action will happen against the first one.

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Populate Combobox From Selection Of Another Combobox?

Jan 1, 2012

I currently have a form with two comboxes. The first cbo is being populated with a project number, which is being pulled from the first column of a spreadsheet. I now want the second cbo to read the first cbo and then find that project number on the spreadsheet; when it finds that project number, I then need it to copy data from the row the project number is on. I have converted to vb from vba. Below is the code I used in vba (which obviously does not work). I only need certain cells from the project row.

Dim proj_num, rng As Range
Dim data, i As Long, j As Long
With Sheet1

[code].....

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ClearDataGrid On New ComboBox Selection?

Aug 15, 2011

i have used the following code to populate a DataGrid based on the contents of a textbox. the users searches for a name which is populated into a combobox based on the name in the combobox several textboxes are populated with data based on the data in one of these text boxes Private bindingSource1 As New BindingSource

[Code]...

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Get Value Of Selection In A Checked Combobox?

Jan 28, 2012

I have put all of the items from my Database into a Checkbox Selection, I now want to take the selection that the user makes from the checkbox and turn that into a string that I can then COMPARE through antoehr table.[code]...

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Load A Combobox With Selection From Another?

Mar 26, 2009

Load a combobox with a selection from another?[code]....

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Mulitple Selection Combobox?

Jun 18, 2012

Basically, I need a combobox populated by data in a table column that I have created.The user will need to be able to pick more than one option.

For example:
Pizza Topping
+ onion

[code]......

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Validate A ComboBox Selection?

Jan 18, 2011

I know this seems like a .Net 101 question but everybody has their own way of programming and I'm curious as to what is the preferred event for checking a ComboBox when a user makes a selection?

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Basing ComboBox Values On Selection Of Another One

Mar 7, 2011

Is it possible to have a different selection of values in the 2nd combobox depending what was picked on the first combobox? For example an American state is picked in the first combo box and the second combo box loads the cities in that state? I'm just using a basic form in Visual basic 2010 there is no database behind it.

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ComboBox Value Selection - Using Specified Table As Reference?

Feb 6, 2012

I have a vb application sitting on an sql server with 4 different tables. I want a scenario where when I select any table from the combobox, every query I will run should use that table as a reference.

E.g. ComboBox values(tables)=A,B,C,D

If A is selected then
SQLQuery="Select * from A "

If B is selected then
SQLQuery="Select * from B " etc

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Databound Combobox Selection Retention

Apr 20, 2009

On my form I have three fields and a datagrid view.One field is a combo box.All fields are databound.The datagridview is a detail grid, bound in the "normal" way. Scrolling through records, etc., all work fine.What doesn't work is when a selection is made using the combo box.The underlying table has a self-join of one-to-many: ParentID, ChildID. ChildID is the main ID for the underlying table.Children may have a parent This is just by way of example.So, the combo box's Value is bound to ChildID, and the SelectedValue is bound to the ParentID.On the form one chooses the Parent with this combo box.When I test this arrangement, I select a Parent, then click Save (using the default toolbar actions). However, the combobox seems to "reset" the selection to the first in the list.

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