Can you explain why you forbid the empty char ?
As far as i can see you can set it in the exposed child element (maskEditBoxElement) and it is handled correctly if set as empty.
I need it as empty, so i'm wondering if i'll run into problems that i currently can not see.

Hi

I have got the following code in my form load function;

        da_products = New OleDb.OleDbDataAdapter(SQL_String, con)

        dt_Products = New DataTable

        'Create Datatable
        da_products.Fill(dt_Products)

        'Assign datatable to datagrid
        RadGridView1.DataSource = dt_Products
        RadGridView1.Columns(0).Width = 100
        RadGridView1.Columns(1).Width = 300

    End Sub

This displays the database as expected (two text fields and around twenty tick boxes).

I then have a button to allow me to save the RADGRIDVIEW back to my database, but this does not work and comes up with error

System.InvalidOperationException: 'Update requires a valid UpdateCommand when passed DataRow collection with modified rows.'

Code in update button;

    Private Sub CmdDatabaseSave_Click(sender As Object, e As EventArgs) Handles cmdDatabaseSave.Click
                da_products.Update(dt_Products)

  End Sub

da_products and dt_Products are defined as global

  Public da_products As OleDb.OleDbDataAdapter
    Public dt_Products As DataTable

Thanks

Neil

I want to add a column to the GridView that will allow me to assign and display multiple values for an item.

For example, imagine you want to track the types (home, office, cell) of telephone numbers for users. Note, this is not my actual requirement.  A user can have multiple telephone number types. I don't want to display two separate rows in the GridView for the same user, though. I want to display one row per user, and have the telephone types column allow the display and assignment of multiple telephone number types (e.g., home, office, cell).

A co-worker came up with the idea of creating a User Control that would contain a combobox control to allow the user to select the telephone number types in the combobox and display the selected values in a listbox below it. I specifically chose types for this example, because there's a limited, known set of them-- that's where the idea of the combobox control came in, that is, I need to choose from a limited set of choices.

I looked at the Forums blog titled, "Possible to Add a User Control a A Grid Column," at the following url:
 http://www.telerik.com/community/forums/winforms/gridview/possible-to-add-a-user-control-to-a-grid-column.aspx 
 . . . and tried to implement the solution therein, but when I tried defining a variable of type GridViewDataColumn I got the following design-time error message:
 'New' cannot be used on a class that is declared 'MustInherit'.

I also tried defining a variable of GridViewColumn, but got the same error message.

Is there a way to add a User Control to a GridView?

As a separate, but related issue, can I add a LinkLabel control to the GridView, and can the GridViewComboBoxColumn display multiple selections?

Hi,

We need to remove the local row option in scheduler from the day view. Screenshot mentioned below for your reference.

screenshot

Hi,

I think this question has been done before, but I wasn't able to find it.

Is it possible to use a Property in a "editors always active" mode?

Thanks

How do you remove the arrows on the right had side and the New folder button from the Explorer control.  I want to open the form to a specific folder and then only allow upload, download, to that folder.  I have been able to remove everything else but cannot find these settings.

This is 2019 R2

Hello Admins,

I want to develop a Responsive DataGrid Record insertion.

Like When I have to add Data from List<Objects>.

• I want to Show RowByRow insertion.
• How can i show waiter control while loading the data From the List.

What will be Best Solution can be applied in both scenarios.

Hello,

am I missing something or there's no way to set the autocomplete mode to a PropertyGridDropDownListeditor?

Thanks.