Questions on UI for WinForms Forum

8 answers

1.2K+ views

Conditional formatting when cell value is DBNull

Hi,

Is it possible to add conditional formatting to a column which detects when a cell value is null (DBNull)? I want to highlight cells in my grid that are mandatory but haven't yet been populated. I have tried adding a ConditionalFormattingObject with ConditionTypes.Equal and tried "", null and DBNull.Value.ToString() but none triggered the formatting.

I have managed to get this working by using the CellFormatting event (thanks to help from this forum). Here I am able to check the cell value for DBNull and apply the following formatting;

e.CellElement.BackColor = Color.Red;

e.CellElement.DrawFill = true;

However this paints the cell backcolour red with a fade out - i.e. not blanket red which is what I want. Is this a setting somewhere, or part of the theme? If I use conditional formatting (tested with a non-null value) the cell is painted in plain red - i.e. no fading.

Therefore I would like to get the conditional formatting working with the null values - since this gives the formatting I require.

Thanks in advance,

Ben

GridView

answered on 23 Feb 2009

1 answer

92 views

RibbonBar and RadForm

Hi,

When using RibbonBar I would expect the title bar of the form to disappear since it is redundant.

This can only be done with regular form (setting the FormBorder to NONE). When using RadForm, the title bar is always there, which again, to me, seems to be redundant.

Is there a way to do it when using a RadForm? Can it be set through a property of the ribbon bar?

Thanks,

Roy

RibbonBar

answered on 23 Feb 2009

8 answers

688 views

Highlight Select tree node.

I am extending both RAD Tree view and RAD Tree node in to custom controls for business purposses.
And populating/adding nodes to custom tree view at runtime.

I am not able to high light (Back color) the selected node in the tree. Im setting the Theme to ControlDefault on my CustomTree view, but this doenst seem to take effect .

Any thoughts how i can high light selected nodes on RAD tree view ? Im extending the controls only for business reason, i didnt modify a thing in their actuall behavior. Or Is there anything specific that i need to do, to get the themes going on a extended RAD Treeview control ?

thanks in advance

Arun

Treeview

answered on 23 Feb 2009

1 answer

127 views

ListBox DragDrop in Panel

Hi,

I have added few items in my listbox, and there is one panel which allow drop property is true.

I have handled MouseDown event of listbox and checked if any item is selected if yes then I am calling DoDragDrop() method and passed approprite data. And my panel accepts those data.

Now I think as I have handled mousedown event of listbox, I cannot select another Item (the item that is already selected cannot be changed) !

I think I should not handle MouseDown event, is there any alternative !
Or there must have ItemDrag event, just like we have in System.Windows.Forms.ListView !

Regards,
Divyesh Chapaneri

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 23 Feb 2009

3 answers

92 views

RadTreeView and RadDropDownMenu not appering as wanted

I use RadTreeView, and a RadDropDownMenu assosiated with it.

I would like the drop down menu NOT to be shown for nodes at level 0, but I haven't figured out how to do this. Any ideas?

Also, the drop down menu appears if I right click to the right of the nodes in the tree view. Is there a way to check whether the user has clicked on the actual node?

Thank you!

Treeview

answered on 23 Feb 2009

1 answer

127 views

Column Property Binding

Hi,

How do i bind the IsVisible property of GridView columns to the items in a CheckedListBox.

I need to do the reverse of....

    
            CheckBox1.DataBindings.Add(New System.Windows.Forms.Binding("Checked", Me.RadGridView1.Columns(0), "IsVisible", True))

.....so Checking/Unchecking listbox items will Show/Hide columns in a gridview.

GridView

answered on 23 Feb 2009

1 answer

96 views

display 1 radprogress on all tabs

i have multiple tabs and only 1 radprogressbar. the question i have is how to display it in one tab and when the user click on the second tab, the radprogressbar is also available on that second tab two. please help thank you.

Tabstrip (obsolete as of Q2 2010)

answered on 23 Feb 2009

1 answer

70 views

Child Grid View - How to avoid displaying a blank line at the end of the child grid

Dear All,

I have a master grid view that displays a hierarchical child. However, the child window always displays below it a blank line, supposedly I believe the place whre the horizontal scroll bar would appear, and I am trying to find a way how to get rid of it. Setting different options like horizontalscrollebar always hidden does not do the trick. Any ideas anyone?

Thank you in advance,

George

GridView

answered on 23 Feb 2009

3 answers

73 views

RadPanelGroupBarElement Gets Hidden on Click

I have used RadPanelbar in my win form. I have added 4 groupbar elements. When I click on first most element entire bottom area gets hidden automatically. i.e. the 4 elements and area below it inside radpanel. Am I missing any property to set for this? I am using OutlookNav Pane for this. Thank you.

Panelbar (obsolete as of Q2 2010)

answered on 23 Feb 2009

6 answers

1.5K+ views

text changed event firing before the selectedvalue changed

i have a normal radcombobox (not multicolumn), and i populate it using the textchanged event , through a stored proc that searches on text entered, the stored proc and datalayer returns an custom object collection and it fills the radcomboo correctly. i cannot use the autocomplete mode as the amount of data that will eventually be in the combobox will be very cumbersome, as well as the search is not a simple text search as it searches on more than one column in the Database.
however now when i select an item in the combobox either by pressing down or by selecting an item with the mouse it then selects that item and puts the text into the radcombo.text field, however it is my understanding that the event that fires this off is the selectedvalue changed? however the text changes and txtchanged is run before selectedvaluechanged and this is causing problems for me? is this the correct order of events firing and if so how can i get around this ?

here is sample of similar code

    
               private void rcboInfo_TextChanged(object sender, EventArgs e) 
        
                    { 
        
                        List<InfoComboDetails> allInfos = controller.GetInfoBySearchString(searchstr); 
        
                        foreach (info i in allInfos) 
        
                        { 
        
                            RadComboBoxItem rcbi = new RadComboBoxItem(i.Column1 + " - " + i.colum2 , i.ID); 
        
                            rcboInfo.Items.Add(rcbi); 
        
                        } 
        
                    } 
        
             private void rcboInfo_SelectedValueChanged(object sender, EventArgs e) 
        
             { 
        
            rcboinfo2.SelectedValue = controller.GetInfo2ByInfoID((int)rcboInfo.SelectedValue).ID; 
        
            }

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 23 Feb 2009