Hi ,

I used following link.

https://www.telerik.com/support/kb/winforms/gridview/details/creating-a-radradiobuttoncellelement

I want to do readonly for this column . I put readonly = true but still can click radiobutton. May I know how to do this column readonly true.

Thanks

Moe

hi 

i have a problem i want save my data from gridview to dabase including update, deleting a row and adding a row

i populate radgridview from a datatable.

my delete button is click event on a image 

and my addnew row is the button from da radgridview

the add new row works almost fine (the click event are not firing on the images.) but add the row to the database.

the delete "button" remove the row from datagrid but is not working removing from the database only radgrid,

is there way i can add delete and update radgridview and then i press a button and update the database?

Hello,
There are 3 hierarchical levels in my grid. I use "Load-on-Demand" method to load hierarchical data. Mastertemplate data is binding to a local collection.

My gridview is built basically like this :
   Private Sub FrmMain_Load(sender As Object, e As EventArgs)

        myGridView.MultiSelect = True
        myGridView.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill
        myGridView.ReadOnly = True
        myGridView.AllowRowResize = False
        myGridView.MasterTemplate.SelectionMode = GridViewSelectionMode.FullRowSelect
        myGridView.UseScrollbarsInHierarchy = True
        myGridView.MasterTemplate.ShowChildViewCaptions = True
        myGridView.MasterTemplate.ShowRowHeaderColumn = False

        Call Load_Hierarchy()

        AddHandler myGridView.RowSourceNeeded, AddressOf myGridView_RowSourceNeeded

        myBase.Charge()

        myGridView.DataSource =myBase

   End Sub

   Private Sub Load_Hierarchy()

       Dim template_FirstLevel As New GridViewTemplate()
        template_FirstLevel .Caption = "FirstLevel"
        template_FirstLevel .AllowAddNewRow = False
        template_FirstLevel .AllowDeleteRow = False
        template_FirstLevel .AllowEditRow = False
        template_FirstLevel .AllowRowResize = False
        template_FirstLevel .AutoGenerateColumns = False
        template_FirstLevel .AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill
        template_FirstLevel .ShowChildViewCaptions = True
        template_FirstLevel .ShowRowHeaderColumn = False
        Dim gCol_1 As GridViewTextBoxColumn = New GridViewTextBoxColumn("Col1")

        Dim gCol_2 As GridViewTextBoxColumn = New GridViewTextBoxColumn("Col2")        

        template_FirstLevel.Columns.AddRange(New GridViewDataColumn() {gCol_1, gCol_2})
        myGridView.MasterTemplate.Templates.Add(template_FirstLevel )
        template_FirstLevel.HierarchyDataProvider = New GridViewEventDataProvider(template_FirstLevel)

        '-------------------definition of Second Level template
        Dim template_2ndLevel As New GridViewTemplate()
        template_2ndLevel.Caption = "Second Level"
        template_2ndLevel.AllowAddNewRow = False
        template_2ndLevel.AllowDeleteRow = False
        template_2ndLevel.AllowEditRow = False
        template_2ndLevel.AutoGenerateColumns = False
        template_2ndLevel.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill
        template_2ndLevel.ShowChildViewCaptions = True
        template_2ndLevel.ShowRowHeaderColumn = False
        Dim gCol_2nd1 As GridViewTextBoxColumn = New GridViewTextBoxColumn("Index")
        Dim gCol_2nd2 As GridViewTextBoxColumn = New GridViewTextBoxColumn("Name")
        template_2ndLevel.Columns.AddRange(New GridViewDataColumn() {gCol_2nd1 , gCol_2nd2})
        template_FirstLevel.Templates.Add(template_2ndLevel)
        template_2ndLevel.HierarchyDataProvider = New GridViewEventDataProvider(template_2ndLevel)

   End Sub

   Private Sub myGridView_RowSourceNeeded(sender As Object, e As GridViewRowSourceNeededEventArgs)
        If e.ParentRow.HierarchyLevel = 0 Then '----First Level data load
            Dim Masteritem As C_dbProduit = TryCast(e.ParentRow.DataBoundItem, C_Master)

                    ------Do something to load data in FirstLevelItemsList by using Masteritem-------
                    For 1stItem fonction In FirstLevelItemsList
                        Dim row_1stL As GridViewRowInfo = e.Template.Rows.NewRow()
                        row_1stL.Cells("Col1").Value = 1stItem.data1
                        row_1stL.Cells("Col2").Value = 1stItem.data2                        
                        e.SourceCollection.Add(row_1stL)
                    Next

        End If

        If e.ParentRow.HierarchyLevel = 1 Then '----2nd Level data load
                Dim 1stItem As C_1stItem = TryCast(e.ParentRow.DataBoundItem, C_1stItem)

                Dim masterparentRow As GridViewRowInfo = TryCast(e.ParentRow.Parent, GridViewRowInfo)
                Dim masteritem As C_Master = TryCast(parentRow.DataBoundItem, C_Master)

                If 1stItem Is Nothing Then '-----------------e.ParentRow.DataBoundItem is always nothing
                       Exit Sub
                End If

                If masteritem Is Nothing Then'-----------------e.ParentRow.Parent.DataBoundItem is always Correct!
                       Exit Sub

                End If

                '------------Do something to load data in the collection of 2ndItem by using 1stItem-------

        End If

    End Sub

It works perfect to show mastertemplate and 1st hierarchical level. But when I expand 2nd level, its ParentRow.DataBoundItem (it should be selected 1st level data) is always nothing. But I can get DataBoundItem of e.ParentRow.Parent correctly.

In order to avoid memory overloading, I prefer load-on-demand method in hierarchy grid.

Please help me.

Thank you

Hello, administrator

As you know,I used the following code to export the data in the table, but how can I export the data to any location on the computer and name it instead of having to change it when the code is written

    Dim spreadExporter As GridViewSpreadExport = New GridViewSpreadExport(radGridView1)

    Dim exportRenderer As New SpreadExportRenderer()

    spreadExporter.RunExport("D:\exportedFile.xlsx", exportRenderer)

Looking forward to your reply

I've spent 2 hours trying to get the colors right on a GridView......

I set the selected row color using your examples, and the RowFormatting event, but there are two colors i just can't seem to set:

- the color used when the mouse moves over a row. I've tried using the CellMouseMove (as your examples) but I them have to rest all the non-current cells back to normal, and this seems very complicated for just changing a simplecolor. Can I set this at design time? If not, how at runtime?

- same for the backcolor of the whole grid: there is a design0time BackColor on the RadRootElement, and this sometimes shows up in the designer, but not reliably. And I can't seem to set it at runtime either.

Thanks for the great support!

Ian

hi

i want square and multiplied shape for ScatterLineSeries point.

Hi,

I've got a RadTextBox which has multiline set to true. However, when I assign a value to the Text property which contain "\n" characters all text appears on a single line. Is the Text property supposed to handle multi line texts, or do I need to set some additional properties?

Hi,

When I click the button element of the RadSplitButtonElement, the dropdown do open and fire click.

Like in MS-Office, I expect the button to fire click, but not open the dropdown. The dropdown should only be opened when clicking the arrow part.

Note : I'm using version 2016.3.1024.40

How can I change this behavior ?

Thanks