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.
I have a problem with a combobox. I have a form (with information about clients) with textboxes binded to a dataview. One of the columns in the dataview contains a number that tells me what kind of client it is. I don't my users want that my users have to fill in a number in a textbox, but I want them to choose a item from a combobox. De selected value should be the value that is actually saved in the database.
This is my Dim cmd As New SqlCommand Dim dr As SqlDataReader VerbindingMaken() cmd.Connection = cnnVraagbaak cmd.CommandType = CommandType.StoredProcedure [Code] .....
De Datasource is the information in my combobox. With Databindings I'm trying to bind it to my dataset (or view, that doesn't work either) with clients. Every time I get a NullReferenceExeption. The moment I remove the line cbo.DataSource = dsRelatie.Tables("Relatiesoort"), I don't get an error, but it doesn't work either.
That dataset is filled (I've checked) and also the derived view. The column Relatiesoort exists. What do I have to do to make it possible for my users to choose an item from a combobox and save the selected value to the underlying dataset?
I have a combo box with "yes" and "no" with i select Yes i want the label2 to change the text to "yes" likewise with "no"
I've tried to code it in a logical way as possible but it just doesn't works except for the "wtf" so i think that overall my code is correct but the way i want to retrieve the selected item from combo box is wrong.
Public Class Form1 Dim aa As String Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
i have a combobox containing countries name and their codes like INDIA:CNT001 then i have a textbox that store the code of country i.e CNT001(fetching from database) Now i want to match that code with the combobox code so that the combobox is set to that item when i click a button. i m using vb.net and sql server as database.
I 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.
Ok, 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?
For Each Proc as process in process.getprocesses Combobox1.Items.Add(Proc.MainWindowTitle)
to populate a combo box with the list of current process windows, however for every process that doesnt have a main window title there is a blank space, is there a way that I could tell it to not insert the item if it's mainwindowtitle field is blank?
I am having a problem with using a value from a selected item in combo box. While debugging using breakpoints I can see that the combo box is working fine. The problem is I need use the selected value of the text box in HeatTransmissionCoefficientforAsinglePipeCalculation function and while debugging I saw that ThermalResistanceofTheInsulation, ThermalResistanceOfTheCarrierPipe, ThermalResistanceofTheJacketPipe all have a value of 0 when this is not the case...
This is what happens when use clicks ok: Public Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click ' 1. Check if Metric or Imperial Units are selected. ' 2. Convert Entered Variables to opposite unit. ' 3. Determine what type of pipe is selected. ' 4. Determine what type of casing is selected. [Code] .....
I have a combo box that's populated with 4 or 5 items, when you select the item, it shows in the combobox and is highlighted. How do I get it to show without being highlighted?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load CBgrocerys.Text = "Select an item...." Dim item() As String = {"apples", "oranges>", _ "pears", "plums"}
I use a webbrowser in my application named Webbrowser1.In one part of my project i need to know what is the value of a selected item of the combobox in the wbbrowser.For example i have a HTML Like this
ok well i have to make a unit converter that when say kilometers is chosen it converts it to miles. However when i chose kilometers it seems my if statment isnt made properly so the program does not do what i want it to do.to make the if statment say that when i chose kilometer from the combobox make txtTo.text = "A". here is my code: i hope i make sense....
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ Partial Class Lab3 Inherits System.Windows.Forms.Form
I am writing a program that is connection to an oracle database using the tableadapter method. I am populating a drop down list with a distinct set of values. I am then wanting to display the item that user selects in a text box. However, instead of the desired result being displayed the text box is returning system.data.datarowview.
In Silverlight 4, I have a combobox which is binded with a list of State objects( which has StateId, StateCode,StateName properties) and i am showing StateName as the options of combobox. Now i want to select the option "Michigan" which is stored in a string variable called "strSelectedState". How do i do this ? I tried setting SelectedValuePath property as strSelectedState. But doesn't work.
I have a combox box on my login form which contains 1 and 2, I use it as so called accesslevel. Now, my problem is that only the selected item will get read. If I type 1 or 2, it won't get read. How do I make it possible for both selected and written ones to be read?
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".
how i can set selected item in datagridcomboboxcolumn2 become to "a" when selected item in datagridcomboboxcolumn1 is "1"or otherwise set selected item in datagridcomboboxcolumn1 become to "1" when selected item in datagridcomboboxcolumn2 is "a"??
I have a form with a ComboBox, two labels named "Price" and 'Dealer Cost" respectively a NumericUpDown control and two buttons named "calculate Commission" and "Enter Another product" respectively.I want to be able to retrieve the corresponding Price and Dealer Cost from the local database and display them next to the labels when a product is selected from the ComboBox.[code]...
I am very new to programming, I have developed my first application - an xps viewer. What I want to achieve is to be able to allow the user to select which document to open from a range of options that I have predefined in a combo box. I've searched all over the net and can't find an article that shows me how to do this. MSDN is bit too cryptic for me at this moment, so I get confused. PS> I think I'm using the FixedDocumentViewer (hope I wrote it right).
I am trying to get a value for a textbox from a database according to the selected item in combobox. but i had this ex.message " there is no row at position (0) "i have filled the combobox droplist from the same database table as below!
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim connstrg As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=C:Documents and SettingshedrisMy DocumentsREGISTER.mdb;" Dim conn As New OleDbConnection(connstrg)
I 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?
I have a combo box on form1 which is linked to a table from my data base. I am trying to get the item selected from the combo box to be a label in form 2.
I want to populate the combobox based on the selected item in the first combobox. The following code is written in vb.net 2008
Public Class Form1 Sub fillcombo() strsql = "select * from device" Dim cmd As New OleDb.OleDbCommand cmd.CommandText = strsql cmd.Connection = con [Code] .....
For this code I am able to populate the first combobox and when I select the specific item in combobox then the second combobox shows only the first element of that item.
In MS access 2007 I have created 2 tables: 1) Contains the device ex:computer 2) Contains the device and its parts ex: cpu, monitor so here the device has duplicate values Table names are device and parts.
I wantt o change the selected item in a combo box if a user enters a name which is already in my dataset. The Combo Box is linked to my database set and all the other text boxes are linked using my databindingsource.How can I do this, I have this code but it does not change it.
vb.net Try Dim name As String = "" Dim inputname As Object = TextBox1.Text
In the form below you see how the initial selected item is the first record of the table.. these controls are bound.. I want to initially show "Select one" in the combo box or nothing at all and the other controls not to be bound until an actual item is selected in the combobox..
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
