I set combobox.datasource to a dataview item (so that it binds to a table), When I get return value from combobox.selectedvalue. Error was returned bcos it is of type"system.data.datarowview" I don't know why commonly its return value as text
The code :
If ldstList.Tables(0).Rows.Count <> 0 Then
With CbStatus
[code].....
I have a problem in my code I can't seem to find a solution for.. One combobox is being filled up with a datatable like this:
CbUsers.Datasource = usersDAO.getUsers()
The getUsers() returns a datatable from my acces database. Users have a name and id, I want to use both of them but it should be something like this:
CbUsers.DisplayMember = "username"
CbUsers.valueMember = "userid"
In other words, I want to see the user name, but work with the user ID. So far the code worked, but it only displays stuff.
Now, in a method I want to use the id of the selected user in the combobox but that has been given me some trouble.
If I use this line I get a DataRowView: CbUsers.selectedValue
When I try to retrieve information from it, it throws an exception. I've tried lots of different code and it never worked..
If I put the DataRowView in a local variable and do this:
id = drv.items(0)
I only get exceptions..
way to work with a combobox that displays usernames but works with their id's?
I have a problem when i add new data then when i choose course in combobox example i will choose items in combobox "Bachelor of Science Information Technology" then when i save. then the result in course is "System.Data.DataRowView". What should be the correct Codes?
View 6 RepliesI used this code:
myCommand = New SqlComman("SELECT RackName FROM tblRack", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
myAdapter.Fill(myDataSet, "tblRack")
cboRack.DataSource = myDataSet.Tables(0)
then in the combobox i got the display "System.Data.DataRowView".
I got the System.Data.DataRowView when I tried to select the data from sql database. These are my code:
......
myCommand = New SqlCommand("SELECT FirstName +' '+ LastName FROM tblVisitor", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
[Code].....
How to fill another combobox depending on the value selected from first combobox?
View 2 RepliesIn my VB.net solution I have a form in which I have to choose a beginstation and an endstation. I have to select both from comboboxes. Now what I want is that when I choose a beginstation, the chosen station will be gone in the combobox of the endstation so that I can't pick the same endstation as the beginstation.Is there a way to do this? I've tried a lot with SQL and LINQ queries but it didn't work out :(
View 1 RepliesI have a detailview, inside the detailview there are four radio button and I want to return a value when the radio button is selected. Do my code have any problem?
For Each dtv As DetailsViewRow In questionDetails.Rows
If (CType(dtv.FindControl("Option1"), RadioButton)).Checked = True Then
Label1.Text = "1"
[Code].....
I need to make a list box with 2 reports in it. Then i need to make a function that wil return the name of selected report, or if no report is selected then return "no report selected".After i made the list box i tried to make the function in the code builder: insert procedure -> function. I tried using an IF statement to make it that when a report is selected the report shows as in a msg... but it keeps saying something is wrong with my code.
View 4 RepliesSo basically, I am running through my selected path recursively and returning the results to an array.. I think.
vb.net
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim path As New FolderBrowserDialog
If path.ShowDialog = Windows.Forms.DialogResult.OK Then
Me.TextBox1.Text = path.SelectedPath
[Code] .....
I was told that to return the search to an array, I add the return toarray() at the end.
Now obviously Im not getting errors, but I am also not polling the results that are in fileslist.toarray(). I've looked at arrays quite a bit, I see their functionality if they are defined like myarray(4) with 5 declared array values... its an array with 5 value places. And to read from any one of the 5, you'd say something like msgbox(myarray(3)) to call the 3rd place in the array.
Well, as you can tell from the code, I am putting a variable amount of information into the array, How can I call that information? If I scanned a folder with 300 files, how can I call the results of that array and put them in a text file, or console, or messagebox through them? And assume I am doing it through a button click event. So, button click to read all input in the array to console or something like that.
In my code I have to create a listbox and a form as its container. After adding a few items through code I am not able to make code return a Selected Item when I select the item manually; it always returns the las item added. However ther is no such problem with returning the Selected Index.
View 8 RepliesI have a datagrid called InvoiceDataGridView, I am looking to set a variable to the value found on the 3rd textcolum of the currently selected row
View 4 RepliesI'm learning .NET and I've got a question about user controls. I'm using VS 2010.. I've created an user control, which contains a textbox (code), a button and a label. When you fill in the textbox, the system searches of the codes exists, if so, the description is showed in the label, else it's cleared. When you click the button, a form opens with a datagrid where you can select a code. When you select a code in the datagrid, the code textbox should be filled in with the selected code. How do you return the selected value to the custom control? I've created a public property in the custom control, but i can't access it.
View 1 RepliesIf cmOptions.Visible Then
Return
End If
I have a refreshing process that updates a listview every ten seconds. If the context menu is open for a selected item it should return and not refresh?
As the title describes I tried to get the selected items and it returned an emtpy collection. The property only works once after that something goes wrong and it returns an emtpy collection. Does anyone know why? Or knows what I'm doing wrong?
View 6 Repliesi have form1 with combobox1 and rtb1 i would like to search the rtb1 for combobox1 selected value and return the first 9 characters from the line with the result.
COMBOBOX1
ADRIATIC
AMERICA
APAC-ANZ
[code]....
so if combobox1 selected.value = "BALTIC" then i would like "1209-4756" to become a named string (eg, cda = 1209-4756)
I am unable to load the dat into the data Grid. Here is where I keep getting stuck.
dgvOleDb1 = table.Select
dgvOleDb1.DataSource = DataGridViewEditMode.EditProgrammatically
dgvOleDb1.DataSource = ds.Tables(0)
I am confused; I am using VB2010, IBM.iSeries.DB2 on an as400 V5R4. I am trying to establish an OLEDB connection, and return the values from the selected table to a DataGridView. I had one of the admin's make me file named GARBAGE, in the Rprtaccess catalog. In the past, I have been able to connect via access and an ODBC connection. My project is too big for access, and the SQL middleware we have is clunky and not user friendly. This is a program that will generate the SQL statements, specifically the WHERE: clause and populate the datagrid with the selected criteria. In essence I am making a user friendly striped down program, that has variables that are manipulated by the end user, and the rest, referenced tables and libraries are coded.
Imports System.Data.OleDb
Imports System.Exception
Public Class Form11
[code]....
I have written a function before to delete and update records, but never anything to return values back to my call of the function. Here is my code, and I will try to explain what I'm trying to acheive.
If Not Att1 = "" Then
Attribute1.Text = Att1
Attribute1.Visible = True
ComboBox1.Visible = True
[code]....
That codes goes on up to att20. It works just fine, but it is forever long, and I would like to clean it up.I want to do something like:
Or, should I pass the combobox number also, so that the code can fill the appropriate combobox? Like.comboboxfill(Att1,Combobox1) how to write the function and how to pass back the information or just how to make it work in general?
My question is, the SelectedItem property of the Combobox is supposed to return a integer value, is it not? Because I am getting back integers, sometimes, then the next time through I get back a String. Has anyone else had a problem like this with the Combobox?
View 4 Replies[code]...
'here problem is if same name available i cant get its id,it always get first compared name's id.
I have a problem with combobox,[code]...
View 1 RepliesI Wanna To Get Selected Value Of This Combobox.
HTML
<select size="1" name="ddltavalod" id="ddltavalod" disabled="disabled" tabindex="8" style="width:50px;">
<option value="20">20</option>
<option value="21">21</option>
[Code]....
I have a problem keeping a selected value in a combox. I select a row in a datagrid and load another form, based on this selection the form and combobox is prefilled with data. When I close this form it sets the selected value on the combobox back to 0 and gives me an error 'There is no row at position 0', how can I maintain the initial selected value to work around this error
View 5 RepliesI typed and change few times. Now I am staring with mind blank...I am totally stuck... I am trying to figure out how to add up the grades that has been selected from the combobox. I am not givin up.
Private Sub btnCalcu_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCalcu.Click
Dim intHourOne As Integer
Dim intHourTwo As Integer
Dim intHourThree As Integer
[code].....
I have two comboBoxes: cB1 and cB2. Depending on the values I have selected in both comboBoxes, another value puts in a third comboBox called cB3. But if the combination of selected values between cb1 and cb2 don`t give any value in the third combo, first of all It has to appear a MsgBox advicing to the user of this situation, and secondly, I want that the execution thread of the application could be pause /stopped for the user could choose any value selected manually of cB3.
This last action is the problem because I am not able to stop/pause the execution until the user can select the value, and the code after this point is executed and gives me a Nullreference error.
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 am working on WPF application. I have a window which has "Combobox" and "Textboxes". Well,I want to display the selected combobox values in textbox. (Combo Box displays the concatenated string firstname+lastname+initials).But I have two text box for firstname & second name. I want to display only "firstname" in first text box and "last name" in second text box.I wrote the below code. IT displays the values but concatenated. IS there any way I can just display first name in first text box and last name in second text box.
FNSysEngnrTextBox.Text = SysEngnrCB.SelectedItem.ToString
LNSysEngnrTextBox.Text = SysEngnrCB.SelectedItem.ToString
I have a combobox with whose contents get populated via code. Works ok. But When I select something in the list and hit 'OK' it always returns as: nothing, "", or -1 (tried with .selectedValue, .SelectedText, and .SelectedIndex respectively)
Question is, How do you access the text in a ComboBox's selected Value??
I have a combobox named Requirements and The values of it come from sql
View 5 RepliesI 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"}
[code]....
