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1 answer
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Hello,

I am trying to streamline a process using radGridView that allows users to tab through only the necessary controls on a form. When they hit the radGridView control, they're currently tabbing through all existing cells. This is desired - but when they leave the last cell of an existing cell, we want to disable the ability to add a new row. We don't want to them to have to add a new row unless they click on "Click here to add new row". 

I've attached a screenshot of the behavior that I do not want. The yellow cells is from my conditional formatting. I'm not entirely sure what this row is because it doesn't have the default values that I've set when you click on "Click here to add new row".

How can I disable this behavior?

Thank you!

 

Dimitar
Telerik team
 answered on 25 Jan 2019
5 answers
92 views

Hello All,

I have customized InsertHyperlinkDialog to insert hyperlink onto my RadRichTextEditor. My custom dialog insert the hyperlink and also create list of all links saved into a database table.

Now I wonder, can I detect and event when a link is deleted from my document to make me clear out this link from my list ? As long as I get the event, I have put a tag to make sure I can identify which link must be deleted from my list correctly.

Thanks 

 

 

 

Tanya
Telerik team
 answered on 25 Jan 2019
4 answers
538 views

I can't seem to make filtering and sorting work with my RadVirtualGrid. The control itself does the job mostly fine - lightning fast loading of 2000+ rows of data.

I've reduced it to a simple example: a single form with a single RadVirtualGrid, which uses all the code form the online example, 

Only different between my simple example and the documented one is that I don't get the objects from a DB - just make them.

The grid populates fine - it's just the filter/sort which does nothing.

I can get the more advanced filter/sort option events to fire OK, but I only need the simple stuff - single column sorts and single column filtering

There's obviously something really simple I've missed -any suggestions ?

 

Code is:

Imports Telerik.WinControls.UI

Public Class RadForm1
    Private columnNames As String() = New String() {"CompanyName", "ContactName", "ContactTitle", "Address", "PostalCode"}
    ' Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +
    "..\..\DataSources\Nwind.mdb;Persist Security Info=True"   - NOT USED
    Private data As New List(Of Customer)()
    Private Sub VirtualGridPopulatingWithData_Load(sender As Object, e As EventArgs) Handles Me.Load
        AddHandler Me.RadVirtualGrid1.CellValueNeeded, AddressOf radVirtualGrid1_CellValueNeeded
        Me.RadVirtualGrid1.ColumnCount = columnNames.Length
        SelectData()
    End Sub
    Private Sub radVirtualGrid1_CellValueNeeded(sender As Object, e As VirtualGridCellValueNeededEventArgs)
        If e.ColumnIndex < 0 Then
            Return
        End If
        If e.RowIndex = RadVirtualGrid.HeaderRowIndex Then
            e.Value = columnNames(e.ColumnIndex)
        End If
        If e.RowIndex < 0 Then
            e.FieldName = columnNames(e.ColumnIndex)
        End If
        If e.RowIndex >= 0 AndAlso e.RowIndex < data.Count Then
            e.Value = data(e.RowIndex)(e.ColumnIndex)
        End If
    End Sub
    Private Sub SelectData()

        data = Customer.makeData

        Me.RadVirtualGrid1.RowCount = data.Count
    End Sub
End Class
Public Class Customer

    Public Shared Function makeData() As List(Of Customer)
        Dim someCustomers As New List(Of Customer)
        someCustomers.Add(New Customer("1", "Company1", "Fred", "Mr", "addr1", "np7"))
        someCustomers.Add(New Customer("2", "Company2", "Bill", "Mr", "addr2", "np8"))
        someCustomers.Add(New Customer("3", "Company3", "Andi", "Mrs", "addr0", "np3"))

        Return someCustomers
    End Function

    Public Sub New(customerId As String, companyName As String, contactName As String,
    contactTitle As String, address As String, postalCode As String)
        Me.CustomerId = customerId
        Me.CompanyName = companyName
        Me.ContactName = contactName
        Me.ContactTitle = contactTitle
        Me.Address = address
        Me.PostalCode = postalCode
    End Sub

    Public Property CustomerId() As String
        Get
            Return m_CustomerId
        End Get
        Set(value As String)
            m_CustomerId = value
        End Set
    End Property
    Private m_CustomerId As String
    Public Property CompanyName() As String
        Get
            Return m_CompanyName
        End Get
        Set(value As String)
            m_CompanyName = value
        End Set
    End Property
    Private m_CompanyName As String
    Public Property ContactName() As String
        Get
            Return m_ContactName
        End Get
        Set(value As String)
            m_ContactName = value
        End Set
    End Property
    Private m_ContactName As String
    Public Property ContactTitle() As String
        Get
            Return m_ContactTitle
        End Get
        Set(value As String)
            m_ContactTitle = value
        End Set
    End Property
    Private m_ContactTitle As String
    Public Property Address() As String
        Get
            Return m_Address
        End Get
        Set(value As String)
            m_Address = value
        End Set
    End Property
    Private m_Address As String
    Public Property PostalCode() As String
        Get
            Return m_PostalCode
        End Get
        Set(value As String)
            m_PostalCode = value
        End Set
    End Property
    Private m_PostalCode As String

    Default Public ReadOnly Property Item(i As Integer) As String
        Get
            Select Case i
                Case 0
                    Return CompanyName
                Case 1
                    Return ContactName
                Case 2
                    Return ContactTitle
                Case 3
                    Return Address
                Case 4
                    Return PostalCode
                Case Else
                    Return [String].Empty
            End Select
        End Get
    End Property
End Class

Ian
Top achievements
Rank 2
Bronze
Bronze
Iron
 answered on 25 Jan 2019
1 answer
162 views

i would like to expand or collapse the group by clicking on the group name.
my code crashes at e.Item.Group because Group is null.
why is group null when i click on the group name?

        private void Operation_lv_ItemMouseClick(object sender, ListViewItemEventArgs e) {
            if (e.Item.Group != null) {
                e.Item.Group.Expanded = !e.Item.Group.Expanded;
            }
        }

many thanks

Dimitar
Telerik team
 answered on 24 Jan 2019
75 answers
1.2K+ views
hi, which event is best to call this function?  I have tried Load and shown but I still get this error when I click on the grid :

"There is no property descriptor corresponding to property name:"

and the property name is blank. However, I can continue to work with the grid and click on different rows, it is just when I open the form and immediately click on the grid, is when I get this message. Thanks for any help.

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 24 Jan 2019
4 answers
248 views

You have an excellent example of how to do CellFormatting on a Details ListView for a Bound list.  My issue is trying to mimmic the same effect with an unbound list.

Dim productRowView As DataRowView = TryCast(cell.Row.DataBoundItem, DataRowView)
If productRowView IsNot Nothing AndAlso CBool(productRowView.Row("Discontinued")) = True Then
    e.CellElement.BackColor = Color.Yellow
    e.CellElement.ForeColor = Color.Red
    e.CellElement.GradientStyle = Telerik.WinControls.GradientStyles.Solid
    e.CellElement.Font = newFont
Else
    e.CellElement.ResetValue(LightVisualElement.BackColorProperty, Telerik.WinControls.ValueResetFlags.Local)
    e.CellElement.ResetValue(LightVisualElement.ForeColorProperty, Telerik.WinControls.ValueResetFlags.Local)
    e.CellElement.ResetValue(LightVisualElement.GradientStyleProperty, Telerik.WinControls.ValueResetFlags.Local)
    e.CellElement.ResetValue(LightVisualElement.FontProperty, Telerik.WinControls.ValueResetFlags.Local)
End If

 

I don't know how to find if a row is "Discontinued" when the data isn't bound to the list.

Right now my ListView is heavily lagged and I'm not sure if it's due to the fact that I'm not resetting the values or if it's due to the functions involved with formatting the cells.

Dimitar
Telerik team
 answered on 24 Jan 2019
2 answers
150 views

how do i select an item programmatically in my listview so that the group is expanded, the item is selected and current, like radgridview isVisible = true, isCurrent = true ?

 

thanks

Andre
Top achievements
Rank 1
 answered on 23 Jan 2019
5 answers
871 views

Hi,

Is it possible that each time we select a new item in the autocompletebox, the selected item disappears from the list of auto complete items.

This is to avoid to enter twice the same items.

If this is possible, how to do it?

I put an attachment to show what is my current behaviour. What i would like is that once if have selected tag, it does not appears anymore in the list of choice

FYI, I am using auto completion with unbound mode.

Thanks a lot

 

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 23 Jan 2019
5 answers
109 views

     Hi 

 

Dimitar
Telerik team
 answered on 23 Jan 2019
1 answer
184 views

Hi, 

Sometime the last chat message does not appear when the scrollbar is visible, to reproduced:

1- Type Test <ENTER> multiple time until you see the scrollbar

2- Scroll up to the middle so you can't see the last message

3- Type any word and scroll down

Now you can't see the last typed message, instead you may see small dot, You may need to repeat step 3 more than one time.

I'm not sure if it is related to Fluent Theme, because I wasn't able to reproduce it with Crystal Theme.

Thanks

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 23 Jan 2019
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