Questions on UI for WinForms Forum

8 answers

606 views

Please, can you help me with this question:

I have a grid with combobox column. All of these comboboxes have different DataSorce property (assigned thouth intercepting CellEditorInitialized event):

    
                Private Sub gridSort_CellEditorInitialized(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles gridSort.CellEditorInitialized
 
                    Dim i As Integer
 
                    If gridSort.CurrentColumn.HeaderText = "Order" Then
 
                        Dim editor As Telerik.WinControls.UI.RadComboBoxEditor = gridSort.ActiveEditor
 
                        Dim editorElement As Telerik.WinControls.UI.RadComboBoxEditorElement = editor.EditorElement
 
                        If gridSort.Rows.IndexOf(gridSort.CurrentRow) = 1 Then
 
                            i = editorElement.SelectedIndex
 
                            editorElement.DataSource = New String() {"Minimized", "Maximized"}
 
                            editorElement.SelectedIndex = i
 
                            If i < 0 Then
 
                                Dim ii As Integer = 0
 
                                For Each ss As String In editorElement.DataSource
 
                                    If ss = gridSort.CurrentRow.Cells.Item(1).Value Then
 
                                        editorElement.SelectedIndex = ii
 
                                        Exit For
 
                                    End If
 
                                    ii += 1
 
                                Next
 
                            End If
 
                        Else
 
                            i = editorElement.SelectedIndex
 
                            editorElement.DataSource = New String() {"Ascending", "Descending"}
 
                            editorElement.SelectedIndex = i
 
                        End If
 
                    End If
 
                End Sub

1. Every time editorElement.SelectedIndex have value -1 (and I must set value by searching throuh DataSource list and comparing with cell Value). For values Minimized/Maximized it's done and work fine, but for values Ascending/Descending it's not and when I click on combobox field - it's filled by empty sring.

Comparing with Value of cell is not fine because here can be some duplicated values (sic!) and I can not determine what value was in this cell before. Is here some method of determine SelectedIndex after changing of value?

2. I want to collect data choosen by user. But ComboBox cell in grid have not SelectedIndex (or I can not find it?) and I must to obtain it from Value property. Problem is similiar with previous question - how can I find a real position of value in DataSource list?

GridView

answered on 19 Feb 2010

1 answer

117 views

GridView and pinned rows

Hello,

I have reported a problem with the pinned rows (in the radGrid) for the Q3 2009, this problem do not seem to be resolved in the Q1 2010 Beta.

Initial post : http://www.telerik.com/community/forums/winforms/gridview/gridview-and-pinned-rows.aspx

Regards.

Court Philippe.

GridView

answered on 19 Feb 2010

3 answers

165 views

[Solved] Incorrectly self-resizing RadMenuItem

I'm using 2009 Q3 Winforms. In order to create a multi-select dropdown combobox, I used a few other forum posts' responses as a guide. I created a GridMenuItem class that inherited from RadMenuItemBase and implemented INotifyPropertyChanged. That GridMenuItem contains a RadGridView and adds that GridView as a RadHostItem to its children.

Anyway, what happens is that the dropdown grid will resize itself each time you drop it down. It appears to be decreasing the height while increasing the width, by a small amount (I think around 6 both ways). Eventually you get to an ever-increasing line. I cannot seem to figure out what is wrong.

Below is the code to show what is happening.

Thoughts?

(Create a new Forms project with Form1, add a dropdown button)

    
            Imports Telerik.WinControls  
        
            Imports Telerik.WinControls.UI  
        
            Imports System.Text  
        
            Imports System.Data.Common  
        
            Imports System.ComponentModel  
        
            Public Class Form1  
        
                Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load  
        
                    Dim Item As GridMenuItem = New GridMenuItem  
        
                    Dim Grid As RadGridView = Item.Grid  
        
                    Grid.Columns.Add(New GridViewDataColumn("A"))  
        
                    Grid.Columns.Add(New GridViewDataColumn("b"))  
        
                    Grid.Columns.Add(New GridViewDataColumn("c"))  
        
                    Grid.Rows.Add("Hello", "World", "!")  
        
                    Grid.Rows.Add("Hello", "World", "!")  
        
                    Grid.Rows.Add("Hello", "World", "!")  
        
                    Grid.ReadOnly = False 
        
                    Grid.Columns(0).Width = 5 
        
                    Grid.Columns(1).ReadOnly = True 
        
                    Grid.Columns(2).IsVisible = False 
        
                    RadDropDownButton1.Items.Clear()  
        
                    RadDropDownButton1.Items.Add(Item)  
        
                End Sub  
        
            End Class

Here's the item:

    
            Imports Telerik.WinControls.UI  
        
            Imports Telerik.WinControls  
        
            Imports System.ComponentModel  
        
            Public Class GridMenuItem  
        
                Inherits RadMenuItemBase  
        
                Implements INotifyPropertyChanged  
        
                Dim _Grid As RadGridView  
        
                Dim _HostItem As RadHostItem  
        
                Public ReadOnly Property Grid() As RadGridView  
        
                    Get  
        
                        Return Me._Grid  
        
                    End Get  
        
                End Property  
        
                Protected Overrides Sub CreateChildElements()  
        
                    _Grid = New RadGridView()  
        
                    _Grid.BeginInit()  
        
                    _Grid.BindingContext = New BindingContext()  
        
                    _Grid.MultiSelect = True 
        
                    _Grid.AutoSize = False 
        
                    _Grid.HideColumnChooser()  
        
                    _Grid.ReadOnly = False 
        
                    _Grid.ShowGroupPanel = False 
        
                    _Grid.ShowNoDataText = False 
        
                    Dim Template As GridViewTemplate = _Grid.MasterGridViewTemplate  
        
                    Template.AllowCellContextMenu = False 
        
                    Template.AllowColumnChooser = False 
        
                    Template.AllowColumnHeaderContextMenu = False 
        
                    Template.AllowColumnReorder = False 
        
                    Template.AllowAddNewRow = False 
        
                    Template.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill  
        
                    Template.EnableGrouping = False 
        
                    Template.ShowFilteringRow = False 
        
                    Template.ShowRowHeaderColumn = False 
        
                    Template.ShowColumnHeaders = False 
        
                    _Grid.EndInit()  
        
                    _HostItem = New RadHostItem(_Grid)  
        
                    Me.Children.Add(_HostItem)  
        
                End Sub  
        
                Protected Overrides Function MeasureOverride(ByVal availableSize As System.Drawing.SizeF) As System.Drawing.SizeF  
        
                    Dim size As System.Drawing.SizeF = MyBase.MeasureOverride(availableSize)  
        
                    Return _Grid.Size  
        
                End Function  
        
            End Class

Buttons, RadioButton, CheckBox, etc

answered on 19 Feb 2010

2 answers

219 views

[Solved] ComboBox - autocompletemode and sorting problem

I add ComboBox column to GidView using this code:

    
            GridViewComboBoxColumn stockCode = new GridViewComboBoxColumn();  
        
                  stockCode.DataSource = dbS.view_Trans_Order_StockCodes;  
        
                  stockCode.DisplayMember = "StockCode";  
        
                  stockCode.ValueMember = "StockCode";  
        
                  stockCode.FieldName = "StockCode";  
        
                  stockCode.AutoCompleteMode = AutoCompleteMode.Suggest;  
        
                  radGridView1.MasterGridViewTemplate.Columns.Add(stockCode);

Data is displayed in GridView by I need:
- sort it. It is possible in this ComboBox? I try use like in normla ComboBox but it is not work
- using autocompletemode. I try do it but it is not working as Suggested :( I do now why

Could you help me?

GridView

answered on 19 Feb 2010

3 answers

174 views

Gridview SummaryItem

Hi Team,

I have a question to ask.

I have printed the summary totals at the bottom of the grid and also exporting well in ms-excel. I am also trying to print the grid with the print preview and other features(not using telerik reporting). My complete data is showing in the print preview except of the summary totals.

Is there any way to retrieve the SummaryItem values at runtime(in some user defined function)? If yes, can you please help me with
this?

Please find attached screenshot for your reference.

Thanks in advance

Cheers,
Munish Sharma

GridView

answered on 19 Feb 2010

3 answers

173 views

[Solved] Multi column combo box Item selection

Hi...
I have a multi column combo box bound to a binding adapter that is on a form. I would like the combo to present a list of options , allowing to user to select one.
This trouble I am having is, when the form loads, the combo box by default selects the first item in the list. I have the datasource, Display member and Value member properties set.

Is there a way to have this combo present the list (allowing me to refresh the datatable and binding adapter) with out selecting the first item in the list upon load?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 19 Feb 2010

3 answers

165 views

Listbox Unselect Event

Is there an event for when the user unselects a row within a list box?
I'm displaying the number of items that are selected within the listbox. When I'm selecting a row the SelectedIndexChanged event fires and updated the label correctly with the number of items in the SelectedItems array. But when I deselect/unselect no event fires unless I change rows. I need to find a way to do this right when the user deselects/unselects the row.

Thank You

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 19 Feb 2010

1 answer

133 views

Row Select

Hi,

I have a grid in which some columns are editable , however when i click on columns which are not editable i want to make that full row as selected.

Can you please guide me in how to achieve this.

Thanks
Anuj

GridView

answered on 19 Feb 2010

3 answers

208 views

Change labels on X-axis

I am doing a program (C#) to display the chart according to the user selected values.For example display status of the staff members who are available.Unlike the default value 1,2,3..I wanted to change the labels in the X-axis to Available,off etc.How can I change the values of x-axis?(retrieve value from an array)
Thanks

Chart (obsolete as of Q1 2013)

answered on 19 Feb 2010

1 answer

223 views

Dates as XAxis Labels

I hope someone can help I'm pulling my hairout here. I know there are a few threads already on this, but none of them are helping me.

I have two columns in a datatable. OrderDate and OrderTotal.

I've got this code.

RadChart1.PlotArea.XAxis.Appearance.LabelAppearance.RotationAngle = 45

RadChart1.PlotArea.XAxis.Appearance.ValueFormat = Telerik.Charting.Styles.ChartValueFormat.LongDate

RadChart1.PlotArea.XAxis.DataLabelsColumn = "OrderDate"

RadChart1.DataSource = dtOrders

RadChart1.DataBind()

You've already probably guessed what my question is. This errors becuase I believe the OrderDate is not in the correct format and I need to us toAODate() in order to make this work. Great, how? Do I have to convert the data in the datatable with this function? How do you use it? I've looked at the microsoft page, it didn't shed any light for me.

I understand that;

Dim SomeDateAsADouble as Double
DatetoConvert as Date = Today()

SomeDateAsADouble = DatetoConvert.ToAODate()

How does this help with the above problem?

RadChart1.PlotArea.XAxis.DataLabelsColumn = "OrderDate".ToAODate() ;This won't work

Please can someone help me, and anyone after me with an explained solution. I really would appreciate it.

Chart (obsolete as of Q1 2013)

answered on 19 Feb 2010