Questions on UI for WinForms Forum

1 answer

190 views

Hi,

I would like to know if you have an easy way to implement Undo-Redo on all node action (Moving, deleting, adding, rename, drag and drop from one control to another, etc...)?

The only way I found is to save all the control structure in xml temp file after each change but this way is absolutely not efficient... I would like to know if there is a better and faster way.

Thanks in advance for your help.

Best regards,

Fred

Treeview

answered on 28 Aug 2009

2 answers

932 views

foreach statement to search listbox items

Hi,

I am encountering a problem with searching radlistbox items. MyCode:

                    private void searchListBox(object sender, EventArgs e)         
                    {         
                        int count = 0;         
                        foreach (RadListBoxItem item in this.lbLiveClients)         
                        {         
                            if(item.DescriptionText == this.txtFindLiveClient.Text)         
                            {         
                                this.lbLiveClients.SelectedIndex = count;         
                                break;         
                            }         
                            count++;         
                        }         
                    }         

gives an error:

foreach statement cannot operate on variables of type 'Telerik.WinControls.UI.RadListBox' because 'Telerik.WinControls.UI.RadListBox' does not contain a public definition for 'GetEnumerator'.

Any Solution to this:

I have items that have both text and description text. I wanted to search description text for some reason. then i decided on simple for loop.

                                for (int i = 0; i < this.lbLiveClients.Items.Count; i++)         
                        {          
                            this.lbLiveClients.Items[i].         
                        }         

but no description text property there for items there, only the text property.

Any Solution to any of this.??
Thanks in advance

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 28 Aug 2009

3 answers

500 views

RadGridView for WinForms - Hide Row Indicator

Is there a property I am missing to hide the Row Indicator? This occupies a lot of space that I would rather not have.

Thanks

GridView

answered on 27 Aug 2009

4 answers

301 views

Rad Grid view Hierarchy

How to Handle Inner (Child)Grid events in Rad Grid view Hierarchy (Win Forms)

How to set Inner (Child)Grid Heigh in Rad Grid View Hierarchy (Win Forms).

GridView

answered on 27 Aug 2009

5 answers

619 views

[Solved] RadToggleButton User vs. Programatic StateChanged Event

I have a RadGridView that is being used to edit data. Some of the cells contain bold text.

I am attempting to add a RadToggleButton that will be used to bold or unbold text. When the user selects a row with bold text, I toggle the RadToggleButton to ON. When the user selects a row not formatted with bold text, I toggle the RadToggleButton to OFF.

I need to handle the ToggleStateChanged event differently when the button is clicked than when I toggle the state programatically.

Any suggestions on how to do this?

Buttons, RadioButton, CheckBox, etc

answered on 27 Aug 2009

2 answers

214 views

Error while updating GridViewCell Value

Hi,

I am displaying customer data [Id, Name and Address] in grid view. I also need to display some calculated value “Customer Points” in the grid. For the “Customer Points” I have added a GridViewTextBoxColumn “txtCustomerPoints” to the grid.

For displaying data in “txtCustomerPoints” i am using the CellFormatting Event as below:

private void RadGridView1_CellFormatting(object sender, CellFormattingEventArgs e)

{

try

{

string columnUniqueName = ((GridViewDataColumn)e.CellElement.ColumnInfo).UniqueName;

if (columnUniqueName == "txtCustomerPoints " )

{

if (IsColumnExistsInGrid(RadGridView1.MasterGridViewTemplate, columnUniqueName))

{

RadGridView1.GridElement.BeginUpdate();

e.CellElement.RowInfo.Cells[columnUniqueName].Value = "Some Calculated Value";

RadGridView1.GridElement.EndUpdate();

}

catch (Exception ex)

{

throw ex;

}

But this generate an error on this line:

e.CellElement.RowInfo.Cells[columnUniqueName].Value = "Some Calculated Value";

The error is:

ex = {"Object reference not set to an instance of an object."}

StackTrace " at MSMainPrj.FormsEmbedded.Booking. RadGridView1_ValueChanging(Object sender, ValueChangingEventArgs e) in D:\\Users\\Yaqub.Ahmad\\CS2\\trunk\\code\\MSMainPrj\\FormsEmbedded\\Booking.cs:line 1755\r\n at Telerik.WinControls.UI.RadGridView.OnValueChanging(Object sender, ValueChangingEventArgs e)\r\n at Telerik.WinControls.UI.RadGridView.CallValueChanging(Object sender, ValueChangingEventArgs e)\r\n at Telerik.WinControls.UI.GridViewCellInfo.set_Value(Object value)\r\n at MSMainPrj.Libraries.TelerikGridHelper.SetGridColumnValue(RadGridView grid, CellFormattingEventArgs e, String columnName, Object value) in D:\\Users\\Yaqub.Ahmad\\CS2\\trunk\\code\\MSMainPrj\\Libraries\\TelerikGridHelper.cs:line 292" string

TargetSite {Void RadGridView1_ValueChanging(System.Object, Telerik.WinControls.UI.ValueChangingEventArgs)} System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo}

Kindly help me to update a custom column's value.

Thanks.

GridView

answered on 27 Aug 2009

6 answers

194 views

Controls are Moving Between Rows

Hello,

I'm having trouble with some controls I've added to gridview cells. I've followed the procedure in your documentation to add the controls via the CellFormatting Event. I have added a RadCheckBox to one column and a RadButton to another. Everything works fine at first, but if there's enough rows for scrolling to occur, the controls will actually migrate from one row to another when scrolling is performed. In fact, if you scroll down via the scroll bar, the controls stay in their correct row, but if you scroll up, the controls seem to stay put while the rows rotate around them.

Please help!

Thanks!

Jeremy

GridView

answered on 27 Aug 2009

3 answers

332 views

How to the [RadCheckBoxEditor] ?

private void managerGrid_ValueChanged(object sender, EventArgs e)
        {
            if (sender is GridCheckBoxCellElement)
            {
                GridCheckBoxCellElement cell = (GridCheckBoxCellElement)sender;
                RadCheckBoxEditor checkbox = cell.Children[0] as RadCheckBoxEditor; <- Error

How???

GridView

answered on 27 Aug 2009

4 answers

322 views

Catching Child Form Closing.Cancel = true

Hi,

I'm using RadDock and I am trying to find a way within the RadDock.DockWindowClosing event handler to know if the form on the ActiveWindow has set Cancel = true in the Form.Closing handler. I manually close the form in the DockWindowClosing handler like this:

  103             HostWindow window = dockMain.ActiveWindow as HostWindow;

  104             Form form = window.Content.FindForm();

  105             form.Close();

The form object is the correct form.  There may be a reason why the form should not be closed and will set 
the Cancel property to true;  I can not find a way to detect this state.  I really need to be able to cancel 
a DockWindowClosing event based on the underlying form closing event.
How can I do this?

Thanks,
Mike

Dock

answered on 27 Aug 2009

1 answer

142 views

Doc update on CloseAction and AutoDispose Properties

I the Beta Version there was an AutoDispose Property on RadDock, that was removed with 9.2 - now I assume the right way to have AutoDispose Functionality is to set the CloseAction Property on the Document or Tool Windows as needed(?).

The docs are unclear, even the introduction text mentions the AutodDispose Property, And it can be found searching the online Reference / Docs.

Regards
Erwin

Dock

answered on 27 Aug 2009