I have a comobox and a timer.
im trying to make it so the index of the combobox is "for example"
1
2
3
4
5
each number will change the timer
1 = 1000
2 = 2000
3 = 3000
and then the code will be something like If comobox1.text = "1" then timer1.interval = 1000
end if
im having a problem regard combobox selected index.the combobox wont change its index when i type a text that is the same with one of the items and pressing tab. when i check its selected index its -1. ill give an example to make it simple..combobox items = AB, AC, AD i entered "AB" by simply typing it not by selecting in the dropdown.its index is -1, how can i make the index the same with the items in the drop down?
View 2 RepliesI have a column in a datagridview that is a combobox with 4 items in it. I can use this code to see the text value of the selected item:
View 2 RepliesI'm creating a multi-threaded application (although it is not at the moment) which will be connecting to a large number of sockets. I've noticed when a connection cannot be made the connect timeout is rather large, so I am trying to make my own. Here is what I have come up with...
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
CreateSockets(2)
AssignSockets(0, "192.168.31.2", 80, False, False) 'shouldn't connect
AssignSockets(1, "192.168.1.1", 80, False, False) 'should connect
[code]....
Looking at the timeoutOccured() sub, you can see I'm unsure of how to specify which index to set. Efficiency is important since this will be housing a lot of connections at once. Something else that just came to mind, would .theTimer.Stop reset the tick value on the timer?
I've got the web browser with tabs in all working fine, but there's one bug, i can add tabs, delete em, etc.. but when i delete a tab then go to create a new tab, it gives me the error: InvalidArgument=Value of '6' is not valid for 'index'. Parameter name: index '6' is the number of tabs i had open.Here's the bit of code i use to create the tabs with the browser in it:
vbcode
Dim browse As New WebBrowser
browse.Name = "b1"
browse.Dock = DockStyle.Fill
[code]....
When the selected index changes I for a second time this code errors.
vb.net
lvReports.SelectedItems.Item(0).SubItems.Item(2).Text
with this error message
InvalidArgument=Value of '0' is not valid for 'index'. Parameter name: index
Why is this?It worked for the listviews.click event perfectly.
I'm trying to get a ComboBox to remove the 6th string in the ComboBox or an index of (5) but it doesn't remove it here is the function I am using:
if ComboBox1.items.count = 6 then
ComboBox1.Items.RemoveAt(5)
End If
Trying to learn VB 2005. So my questions might tend to use the logic from VBA/VB6.
So, my question is, is it possible to assign indexes on the listbox/combobox? What I have is an ID and a Description from a table and would like to display it on listbox/combobox to allow user to choose from by looking for required description. When selected the ID will be used to search for other information related to this ID.
I manage to display the description but how to assign the IDs?
How should i find the index of the value member in an combobox?
View 4 RepliesHow 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]...
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.
View 6 RepliesI am using vb 2008, DataBound Controls and typed dataset. My form is having Group Box (initially hidden) and some text box, combobox controls for Data Entry, and the code is
bsSales.AddNew()
txtCreditDays.Text = 20
dtDueDate.Value = dtSalesDate.Value.AddDays(txtCreditDays.Text)
cboGodown.SelectedIndex = 0 '
Default
gBox.Visible = True
dtSalesDate.Focus()
I have set the combo box to select the 1st record in the list however, when the next Statement that is "gBox.Visible=True" is executed, the Combo Box is again set to -1 position. Why is it?
I need to develop a function called SetComboBox that accepts the category(ies) in the ComboBox as a string and returns an integer indicating the index position of the category in the ComboBox. The function is supposed to set the category in the ComboBox Selected Index property to match the string category stored in a database for an inventory item.
View 1 RepliesI have a combo box setup with 4 items, with indexes ranging from 0 to 3.
Later in my code, I need to do a certain event depending on what is selected. To do this I thought about comparing what the index of the selected combo box item is, because integer comparison is faster than strings, right?
how I can grab the index of the selected value?
I'm trying to figure out how to set the index of a combobox column in a datagrid view when I load it from SQL Server. The combobox has a string in the text field and an index in the value field, and I want to set the selected index to match the value to an ID in the row from SQL. Not really sure how to bind it that way.
View 9 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 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].....
Is it possible to use a timer to delay code? For example:
[code]...
I want to make a wake up timer using a combobox to select the time.I also want to make a label that display's how many minutes are remaining.
If
ComboBox1.Text = ("00:00"
Or
[code].....
I have figured out how to populate the comboboxes for an app I'm making from a database this is not the actual code but is basically the way I'm populating them for i = 0 to maxrows - 1 cbobox.items.add(dataset.tables("datatablename").Rows(i).Item(x))next i need either to be able to manually assign an index value to each added item or at least figure out how vb.net manually assigns index values to these.
View 1 RepliesI have 1 Table Called "Menu" there are some textboxes and a combobox. I want to fill data in the Textbox called "Menu_Rate" on Selection of combobox selected item & coressponding rate of the Menu shoud be displayed in the textbox.
This is my Code
con.ConnectionString = "Data Source=localhost;Integrated Security=true;Initial Catalog=Restaurant"
cmd.CommandText = "select Menu_Rate from Menu where Menu_Name='" & cbMenu.SelectedItem & "'"
[Code].....
I am trying to have the index value of a selected item in a combobox returned to a variable. Then, if the variable = 1 (which would be the index of th second item in the combobox), I want a groupbox to be hidden (be invisible) on the form. Here is my code...Getting an error that says:
'ListIndex' is not a member of 'System.Windows.Forms.ComboBox'
Code:
Private Sub cbxAccounts_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim selection As Integer = CInt(cbxAccounts.ListIndex)
If selection = 1 Then gbxCheck.Hide()
End Sub
I am trying to have the index value of a selected item in a combobox returned to a variable. Then, if the variable = 1 (which would be the index of th second item in the combobox), I want a groupbox to be hidden (be invisible) on the form. Here is my code...Getting an error that says:[code...]
View 1 RepliesI have a datagridview with 3 columns. The second column is a combobox which I want to bind with a dataset. How do I go about setting the column index for it as I am doing something like this.
Dim ComboCol As New DataGridViewComboBoxColumn
ComboCol.DataSource = SDS.Tables(0)
ComboCol.ValueMember = "Specie"[code].....
how do i get the selectedindex/item of a datagridview combobox column?what i want to do is change the back color of datagridcombobox when something is selected from the combobox?So, selecting 'false' will change the color to RED and selecting 'true' changes the color to GREEN.
View 39 RepliesLet 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.
I've tried a couple things to add items to a combobox (I've also Googled a lot but haven't found anything for VB2010) and on top of that, how to make it so that if the user selects 10ms, it changes the Timer1.Variable to 10.
Here is my progress from what I found on Google
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
ComboBox1.Items.Add("10ms")
[Code]....
In vb.net using Data Reader while selecting an value in combobox should display an selected value record from the database into textbox.
View 4 Repliesim wanting to add a new feature but am unable to even get started. I'm in a windows form in visual basic .net and basically, I have a combobox with 3 items in the drop down menu. I would like to make it to where the moment one of the items in the combo box are selected, the program recognizes the change of index and automatically calls to the function of my choice.
View 1 Repliesi need some help with this problem. i have seen some solutions but written in C and im not that good to convert from C to vb.net.Well i want to 'do something' when i mouse move at an item of the combobox dropdown list.like when i move the mouse over "jkl" make the button1.text = "jkl"when i move the mouse over "def" item make the button1.text = "def"
View 4 Replies