My code is:
sqlsub = "SELECT distinct field1, field2"
sqlsub += " FROM tbl I
Dim da As OleDbDataAdapter
Dim lsdataset As New DataSet
[code].....
My prob is how should I bind the combo with field1+"("+ thpr+ ")" thpr is the string i get from function by passing field value 2 from query my combobox should be displayed as field1 + (thpr).
How do I display the concatenated records in my combobox? I have the following codes
Private Sub frmAssignSubjects_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If cnn.State = ConnectionState.Closed Then cnn.Open()
If rdoHS.Checked = True Then
[code].....
What should I put in the DisplayMember and ValueMember? If I will not concatenation, I just use "LastName" and "IDNO" in my DisplayMember and ValueMember respectively then records get to display in my combo.
MY TABLE
sample comment1
sample comment2
[CODE]...
if sample column value is the same, i want all comments value to be concatenated
do while dr.read
listbox1.items.add(dr.getstring(0))
[CODE]...
I need to sort the values of my listbox to have the latest date on top plus some text. here is the code I'm using:
[Code]...
I am trying to add 2 databindings to a combobox. 1 will bind to the text, andthe other one will bind to the selectedvalue. However, I am only able to add one databinding to the combobox.
cmdCustomerID.DataBindings.Add(
"Text", TblCustomerBindingSource, "strCustomerID", True)
cmbCustomerID.DataBindings.Add(
"SelectedValue", TblCustomerBindingSource, "idxCustomer", True)
This is what I have done. Only the selectedValue DataBindings.Add is being captured.
I'm trying to bind data to a combo box but it does not appear to be working. I've setup the DataSet and the DataSetBindingSource and all this appears to be working, within the form design I can expand the little arrow in the ComboBox control and preview the data. This appears to be working but when the application is run, nothing appears in the drop down box.
View 5 RepliesI have 2 tables:
Locations
location_refnbr (pk)
location_name
office_refnbr (fk)
[code]....
I have combox1 and i want to dispaly Foure Columns in combox1 and I make this
Dim dr As SqlDataReader = SqlHelper.ExecuteReader(conn, CommandType.Text, "select FirstName,FatherName,GrandFatherName,FamilyName from dbo.PersonalData")
Dim dr As SqlDataReader = SqlHelper.ExecuteReader(conn, CommandType.StoredProcedure, "GetSpecialFieldOFPersonalData")
Do While dr.Read
Me.ComboBox1.Items.Add(dr(0) & " - " & dr(1) & " - " & dr(2) & " - " & dr(3))
Loop
how one might go about binding to a gridview in ASP.Net 4 in a scenario where the first row of my gridview should be the headers, the second should be a combobox for each column and the third is the beginning of my actual datasource.
If you can imagine what I am trying to achieve is an ability to create a binding between each column in the datagrid and another datasource. This binding is created by the user selecting a value in the comboboxes. However no matter what I try I cant seem to achieve this.
HeaderText1 | HeaderText2 | HeaderText3
ComboBox1 | ComboBox2 | ComboBox3
DataRow1 | DataRow1 | DataRow1
DataRow2 | DataRow2 | DataRow2
DataRow3 | DataRow3 | DataRow3
I have set up at DataGridView "cdgvExp" for data entry. cdgvExp.Datasource = ExpTab. The datagridview can accept new rows according to how many entries there are. I will then use the data in ExpTab. The Fourth colum is called "Lot" and is a combobox in the datagridview. The goal is to have the Combobox in the fourth column have the datasource be LotTab which is populated according to other choices in the form. I am hunting for something that would work like an independant combobox like cbLots.datasource = LotsTab
How do I dynamically set the Datasource and Datamember of a combobox that is already set up in a datagridview?
I have this code
Public Sub FillCategoryCombobox(ByVal categoryList As List(Of tblCategory), ByVal LvName As ComboBox)
LvName.Items.Clear()
Dim itemValue = New Dictionary(Of Integer, String)()
For Each category As tblCategory In categoryList
itemValue.Add(category.CategoryID, category.CategoryName)
Next category
LvName.DataSource = New BindingSource(itemValue, Nothing)
LvName.DisplayMember = "Value"
LvName.ValueMember = "Key"
End Sub
I receive an error on
LvName.DataSource = New BindingSource(itemValue, Nothing)
Value cannot be null
I want to retrive data from table into combobox ..when the user click combobox items it's corresponding data will be show.In details :I have PERSON table , my program allow to the user search by : Person Name When the user enters the name into TextBox the combobox items will be all names existed in database same which user entered. when the user selects item from combobox a new form will show all person' data
[Code]...
VS2008 targeting .Net 3.5x. I have a combobox with a datasource and display member set, and when I run the project, I see the items. I am also binding the selected item to another object which contains the item upon which I want to select. I have verified that both the bound object and its underlying data contain the value I expect. The problem is that I cannot get it to select the correct item - it only ever selects the first item in the list.
View 8 RepliesI can loop through comboboxes likes:
for i=0 to 5
directcast(me.controls ("combobox" & i.tostring), combobox).items.add ("Hello")
next
However, if I do the same thing with binding sources:
for i=0 to 5
directcast(me.controls ("bindingsource" & i.tostring), bindingsource).movenext()
next
It errors me saying that you can't cast binding source as a control or something (they aren't of the same type). How do I loop through binding sources?
I've got a bound Combobox in a database for a lookup but when i set it up and change the data in the combo the program won't let me go and further. There is a data conflict but i don't know where. The problem is here in the combo setup:
Display member : ProductName (nvarChr(20)
Value Member : ProductID (int)
Selected Member: SelectedLookup (int)
This doesn't work. Everything is displayed in the dropdown by name but when i select a item. I can't go any further. If i change the Display member: to 'ProductID' the program works fine. but displays the ProductID where users won't understand. It's like it is trying to store the 'displayed member' Product Name instead in the Value Member 'ProductID'. if i use a list box instead the program works correctly.
In a manufacturing environment I'm using an Access database to store properties of manufactured parts. I've queried a table to fill a datatable, which then populates the attached form.
[Code]...
[code...]
On my first form, I have a combobox that is bound to the Locations table and displays all the different locations. Once a location is selected, a 2nd form is loaded which has textboxes which are also bound to the Locations table and are populated with the corresponding data.
Here's my issue: on the 2nd form, I have combobox that is bound to the Offices table. Currently, when this form loads all the available offices, displaying with the first office in the list. I need it to populate with the correct office based on the selection made on the combobox on the first form. I guess what I'm asking is, how does one bind a combobox to a foreign key b/c it is the foreign key, office_refnbr, from the Locations table that needs to display in the Office combobox.
I've tried a variety of bindings, including:[code...]
enlighten me about how one might go about binding to a gridview in ASP.Net 4 in a scenario where the first row of my gridview should be the headers, the second should be a combobox for each column and the third is the beginning of my actual datasource.If you can imagine what I am trying to achieve is an ability to create a binding between each column in the datagrid and another datasource. This binding is created by the user selecting a value in the comboboxes. However no matter what I try I cant seem to achieve this.
HeaderText1 | HeaderText2 | HeaderText3
ComboBox1 | ComboBox2 | ComboBox3
DataRow1 | DataRow1 | DataRow1
[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 RepliesI tried to bind the following Enum to a ComboBox
Public Enum PossibleActions
ActionRead
ActionWrite
ActionVerify
End Enum
I can't change the Enum itself, but I do not want to display these strings. My intention is just to cut the prefix 'Action' and display 'Read', 'Write' and 'Verify' in the ComboBox.
Therefore I wrote a ValueConverter
Public Class PossibleActionsConverter
Implements IValueConverter
Public Function Convert(ByVal value As Object, ByVal targetType As System.Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.Convert
[Code] .....
I have a datagridview bound to a datatable. I want replace one of the cells with a combo box and bind that combobox to one of the columns in the datatable. I have been able to replace the cell OK but currently have two issues I have not been able to resolve.
1. When I add items to the drop down (items.add ("Yes")...) they don't appear in the drop down box.
2. I can't figure out the syntax to bind a particular column in my datatable to the newColumn(combobox) in the datagridview.
dbConnection = New OleDbConnection
cmdCommand = New OleDbCommand
Try
[Code].....
I want to bind a column of a strongly typed dataset to a combobox. But the problem is i have to get only the distinct values from the column and also when a user inserts a value into that column the new value should be showned in the combobox at the same time.And also i want to make the first row of the combobox to be unselectable..[code]how to make this column distinct values
View 1 RepliesI have a vb.net application. I just want to store a month as number in database. But frontend itself I want to display the month as name jan, feb ........like way in combobox. How to convert database value to month name . I am binding the data from databse to combobox.
View 2 RepliesWhat I would like to do is bind a combobox to my own object which is as follows:
Public Class Categories
Public Sub New(ByVal myConn As SqlConnection)
Dim myConnection As SqlConnection = myConn
myConnection.Open()
[code]....
(I have put breakpoints and I know this object has data.)So on my form how do I bind my combobox to this object? The code I have is below:
Dim bs As New BindingSource
bs.DataSource = New Inventory.Categories(myconn)
cboCategory.DataSource = bs
cboCategory.DisplayMember = "Description"
cboCategory.ValueMember = "CategoryID"
but it returns the following error: Cannot bind to the new display member. Parameter name: newDisplayMember
I'm wondering what a best practice is for handling this.I've got a standard vendor table - with VendorId (which is PK, numeric) and a field the users call SimpleId (which is usually a name - don't let the column name of SimpleId make you think it's numeric!).I've got one datatable that comes from a data adapter that looks like this. And this already changes the table in the SQL database...SqlDataAdapter("Select VendorId, SimpleId From Vendor_T", _connection)I've got this datatable on one panel of my form with a binding navigator - and you can change the SimpleId for a vendor with this.
View 16 RepliesI am binding the data from combobox to textbox.In the Combobox Click event i coded as below for binding:[code]In the above code only the first value is showing in the textbox but when i select next value in the combobox the value is not changing..Is any loop i need put for binding? B`se i need when ever i change or select the value in the Combobox then the corresponding value should be change in the Textbox.
View 2 Repliesi have three textboxes.After entering vales into the textbox the data should be displayed in gridview without going to the database.
View 2 RepliesI have filled a DVG with information and added another column to index(8) pragmatically Now i want to create a combobox with values depending on values in other cells on the same row so each row will have a combo box with different selections. below i have placed the code and hoped someone would have some input on how to approach this. i have tried datagridviewcolumn but that fills every row with the same information regaurdless of a if statement
[Code]...
VB 2008 .NET 3.5. I have a custom "Shipment" object that contains a list of "ShippingRate" objects. This list of "ShippingRates" is accessible through a property "Shipment.PossibleShippingRates." That property simply returns a copy of the list of "ShippingRate" for that particular Shipment.
My UI layer receives a list of "Shipment" objects from the BLL. This list is databound to a datagridview, and shows details relevant to the Shipment such as Shipping Address, etc.
I want to bind the "Shipment.PossibleShippingRates" property to a combobox, such that when the user changes the grid row, the combobox reflects the "PossibleShippingRates" for that "Shipment."
In addition, I need a way to store the "ShippingRate" they selected from the combobox for later use.
I have tried a few ideas, but none of them work properly.
[edit]oops - stupid typo - this is resolved and explained in the next post[/edit] I've got a BINDING SOURCE - that I bind to controls - textboxes mostly. I create a row in the datatable behind this BINDING SOURCE like this.
[Code]...
