Questions on UI for WinForms Forum

1 answer

113 views

Hi,

I have a form that there are lots of toolwindows. Those toolwindows can be tabbedwindows or floatingwindows. So, when I change which one is activated I need to do an action with the control inside the window, but I'm having problems how can I do an action with this control when I activate this toolwindow? I couldn't find the OnActivated event.

Dock

answered on 06 Sep 2013

5 answers

692 views

Populate ComboBox in RadGrid at runtime

I have a scenario where I need to populate a combobox in a cell based on the selection of another cell's combo box. That is, for example, there is a ShippingCarrier (UPS, USPS, FedEx etc) and when user select one of them, it should populate next cell's combo box with their services (for example, if UPS is selected, UPS Priority, UPS Next Day Air etc should be available in second column).

I am using UnBound grid. My code seems to work, HOWEVER, when data is populated in second column, you can not drop down 2nd combo box using mouse (the only way to drop down is to put cursor on second drop down and use ALT+Down Arrow key). Below is the code I am using.

                            col = AppendNewColumn(ColumnType.DropDown, 100, "Carrier", "Carrier")         
                    Dim cCol As GridViewComboBoxColumn = CType(col, GridViewComboBoxColumn)         
                    cCol.DataSource = GetShippingCarriers()         
                    cCol.DisplayMember = "Display"         
                    cCol.ValueMember = "Key"         

AppendNewColumn is the function which creates column and add that to columns collection of Grid. next you can see that it get shipping carriers and bind to that.

Now in CellEndEdit event, I am trying to populate second column as below.

                     Private Sub grdMain_CellEndEdit(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles grdMain.CellEndEdit         
                  If e.ColumnIndex = 12 Then 'Shipping Carrier Selected        
                        Dim row As GridViewRowInfo = Me.grdMain.Rows(e.RowIndex)         
                        Dim newCarrier As String = row.Cells(e.ColumnIndex).Value.ToString         
                        If newCarrier IsNot Nothing AndAlso newCarrier <> "" Then 
                            'Next column is Shipping Method (e.ColumnIndex + 1)        
                            Dim cellElem As GridComboBoxCellElement = CType(row.Cells(e.ColumnIndex + 1).CellElement, GridComboBoxCellElement)         
                            Debug.Write(cellElem.ToString)         
                     
                            Dim col As GridViewDataColumn = CType(cellElem.ColumnInfo, GridViewDataColumn)         
                     
                            Dim element As New RadComboBoxElement         
                            ServiceInfo.UPSServices.ToArray()         
                            element.DataSource = GetShippingServices(CType(CInt(newCarrier), ShippingCarriers))         
                            element.DisplayMember = "DisplayName"         
                     
                            element.StretchHorizontally = True         
                            element.StretchVertically = True         
                            element.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDownList         
                     
                            For Each obj As Object In cellElem.Children         
                                If TypeOf obj Is ComboBoxEditorLayoutPanel Then         
                                    cellElem.Children.Remove(CType(obj, ComboBoxEditorLayoutPanel))         
                                End If         
                            Next         
                            'cellElem.Children.Clear()         
                            cellElem.Children.Add(element)         
                     
                            Debug.Write(col.FieldName)         
                        End If         
                    End If         

Is there anything wrong with the above code that drop down is NOT selected correctly using mouse?

Also, as you can see that I am binding using name/value pair, however, from the cell object, I can get only Value, is there any way to get SelectedItem (Drop down item selected) which may further give me Text and Value? For example, row.Cells(e.ColumnIndex).Value.ToString returns value (numeric), however, display thing is Text (USPS, UPS etc). Is there any way to get either DisplayName or ValueMember value?

Thanks,

Sameers

GridView

answered on 06 Sep 2013

1 answer

293 views

Populate Rad Combo Box inside Rad Grid View

Hi,

I'm using telerik rad controls and I've encountered roadblocks.

I've application that have RadGridView with multiple RadComboBox different datasource.

Questions:

How I'll bind a specific cell in RadGridView with ComboBox? Please see my codes below.

        private void grdList_CellBeginEdit(object sender, GridViewCellCancelEventArgs e)
        {
            DataTable dt = PopulateList();

            GridViewComboBoxColumn comboCol = e.Column as GridViewComboBoxColumn;
            comboCol.DataSource = dt;

            ((GridViewComboBoxColumn)e.Column).DataSource = dt;
        }

This code bind all the Rad Combo and I want only the specific cell..

Like this one on DataGridView

                (grdList.Rows[e.RowIndex].Cells[4] as DataGridViewComboBoxCell).DataSource = _dt;
                (grdList.Rows[e.RowIndex].Cells[4] as DataGridViewComboBoxCell).ValueMember = "CODE";
                (grdList.Rows[e.RowIndex].Cells[4] as DataGridViewComboBoxCell).DisplayMember = "NAME";

Thanks

GridView

answered on 06 Sep 2013

1 answer

146 views

RadMenuItem BackColor only visible on mouse over

I am trying to set the background color of a RadMenuItem based on some logic in order to highlight a particular item in the menu. To set the highlighted item color I am doing this:

menuItem.FillPrimitive.BackColor = Color.Gray;

The problem is this coloring only is visible when the mouse moves over the item. I want the coloring to apply to all states. Is there something else that must be done for this to appear in non-hover states?

Menu

answered on 05 Sep 2013

1 answer

148 views

Renaming Nodes

hi telerik

i save nodes name in sql database ,how can i get new name after renaming a node .?
i test this codes :

Private Sub TreeDevices_TextChanged(sender As Object, e As EventArgs) Handles TreeDevices.ValueChanged

dim Com as sqlcommand=" update Table1 set Field2='" & TreeDevices.SelectedNode.Name & "' where field1 = " & TreeDevices.SelectedNode.Tag

con.Open()
com.ExecuteNonQuery()
con.Close()

End Sub

after renaming a node event "TreeDevices.ValueChanged" occur but "TreeDevices.SelectedNode.Name" still return old name.
what can i do?

thank you
omid

Treeview

answered on 05 Sep 2013

1 answer

103 views

How to set filter for checkboxcolumn in code

Hello,
how do I set filter for a checkboxcolumn to filter only checked/unchecked or all rows?

GridView

answered on 05 Sep 2013

3 answers

1.1K+ views

Enable disable checkbox in RadGridView

Hi,

I have RadGridView populated and it has first column as boolean column shown as checkbox on UI. I need to disable some checkbox on RadGridview based on some data on other column (means user can't click or do any operation.) and need to select and Unselect some checkbox. I tried cellformatting event and cellClick event but no success. I treid to access checkboxelement but it don't have any check property. Please help me how to access checkbox cell element at these events. Or is there any other event???

GridViewBooleanColumn

columnA = new GridViewBooleanColumn();

columnA.HeaderTextAlignment =

ContentAlignment.MiddleLeft;

columnA.HeaderText =

"";

columnA.DataField =

"Check";

columnA.ReadOnly =

false;

columnA.Width = 20;

columnA.AllowResize =

false;

columnA.MinWidth = 20;

radDownLoadListGridView.MasterGridViewTemplate.Columns.Add(columnA);

...........................

private void radDownLoadListGridView_CellClick(object sender, GridViewCellEventArgs e)

{

if (e.ColumnIndex == 0)

{

if (radDownLoadListGridView.CurrentRow.Cells[9].Value.ToString().ToLower() == "y")

{

(radDownLoadListGridView.CurrentCell).Column.ReadOnly =

false;

((Telerik.WinControls.UI.

GridCheckBoxCellElement)(radDownLoadListGridView.CurrentCell)).IsReadOnly = false;

((Telerik.WinControls.UI.

GridCheckBoxCellElement)(radDownLoadListGridView.CurrentCell)).IsSelected = true;

}

else

{

(radDownLoadListGridView.CurrentCell).Column.ReadOnly =

false;

}

Calendar, DateTimePicker, TimePicker and Clock

answered on 05 Sep 2013

5 answers

181 views

Y-Axis Scale Format

I want to display the scale of Y-Axis in Custom Format, i-e instead of displaying 10,000 I want to show 10K. ?

Chart (obsolete as of Q1 2013)

answered on 04 Sep 2013

1 answer

148 views

override appearance/functionality of each tab's remove ([X]) button

I have a tab control and each tab's [x] button (far right of tab strip) behavior is to remove the tab page from the collection.
1) how do I change the [x] to an icon; and,
2) how do I override the event to provide my own functionality (example to delete the underlying object).

PageView

answered on 04 Sep 2013

1 answer

320 views

RadContextMenu on ListView removing multiple items

I have a RadContextMenu on a RadListView with 2 commands. Add and Remove. The Add works fine, but when I use the remove a few times, It removes the selected Index item in addition to the one above it. The Item.text for the listview items are unique and that is how I am removing them.

Help! I've been fighting this for 3 days. Still clicking remove on 1 item results in multiple items being removed.

A good example of the radMenuItem1_Click event would be very useful.

Thanks,
-Henry

ContextMenu

answered on 04 Sep 2013