Questions on UI for WinForms Forum

1 answer

106 views

I have a RadComboBox on my WinForm (using the latest 2009 release), whose DataSource I am setting to an Array of Objects, similar to...

BankInfo[] infos = GetBankInfos();
bankInfoCombo.DataSource = infos;

I also have a BindingSource on the form that takes a List of Objects, similar to...

List<Bank> banks = GetBanks();
bankBindingSource.DataSource = banks;

I am using this BindingSource to bind the controls on the form to the Bank objects properties, of which one of them is ReturnProcessor of Type BankInfo.

this.bankInfoCombo.DataBindings.Add(new System.Windows.Forms.Binding("SelectedValue", this.bankBindingSource, "ReturnProcessor", true, System.Windows.Forms.DataSourceUpdateMode.OnPropertyChanged));

When using a WinForm ComboBox, if I choose not to set the DisplayMember or ValueMember, the ComboBox will call ToString() on the Array and use that as the DisplayMember and the Object as the ValueMember.

The behavior I am getting out of the RadComboBox however, is that if I do not set the ValueMember, nor the DisplayMember it will still ToString() the object, but the SelectedValue will always be null. What occurs, because of this behavior, is that my Databound object ReturnProcessor value is always null, even after a Value is selected from the ComboBox.

The Work around that I have found is to Sub Class the object with a new Property of ReturnProcessorObjectID of Type long. And set the ComboBox DisplayMember to BankName and ValueMember to ObjectID. Then I bind the ComboBox to ReturnProcessorObjectID, instead of the Real ReturnProcessor object.

General Discussions

answered on 23 Mar 2009

1 answer

172 views

GridView ColumnGroup Header Font Color

Hi,

I need to change the color of ColumnGroup Header of the GridView Control.

Thanks

Ajay

GridView

answered on 23 Mar 2009

3 answers

236 views

[Solved] Validation event not firing after Edit

Hi,

I was expecting the Validating or Validation event to fire after committing an edit of a node. Currently calling radTreeView BeginEdit() function to initiate editing and commit changes using Enter.

I need to validate the name and text of the edited tree node before accepting the change. Is there something I need to enable for the event to fire? Or should I be using a different event?

Regards,
Brad

Treeview

answered on 23 Mar 2009

3 answers

145 views

painting issue ?

Im loading some dummy nodes into a tree when the form loads
Im using the NodeExpand event with LoadOnDemand = true
When this event code is finished, my tree background is gone and the the other nodes loose their +/- icons.

What should I check ?

Treeview

answered on 23 Mar 2009

8 answers

278 views

[Solved] Adding Checkbox

How hard is it to add a checkbox to a gridview? I'm using the trial version to test to see how I can add a checkbox and how to handel the event. Using .net's grid is very slow and choppy when i'm scrolling around.

Thank You

GridView

answered on 23 Mar 2009

2 answers

110 views

Prevent Child Docking

Is there anyway to keep dock panels from from docking inside of other dock panels. I only want the panels to be able to be docked inside of the dock manager.

Dock

answered on 23 Mar 2009

5 answers

88 views

grouping behaviour and API changed in 2009.1?

My App uses interactive grouping. What used to work with 2008.3 now throws exceptions. I could not find any docs to this new behaviour. In particular I'm adding aggregate functions dynamically when the user changes grouping configuration

GridView

answered on 23 Mar 2009

5 answers

221 views

Is it possible to dock panel to the right?

I have a tabbed document + two dock panels, one docked to the left and one autohidden to the right.

When the autohidden panel opens it is displayed nicely to the right, but when I press the pin it moves to the left. I would like it to stay on the right, but I haven't found a way to do so, so I hope someone can enlighten me

Dock

answered on 23 Mar 2009

9 answers

478 views

DropDownItemClicked

Hi!

I have to evaluate your product. Now there is a problem with radDropDownButtonElement .
I have a radDropDownButtonElement in my toolstrip! I filled the radDropDownButtonElement with three Items (RadMenuItems).
So if one of these Item is clicked I have to make something. So I thought I have to implement the DropDownItemClicked event! But this event doesn't fire! Could you tell me why? And how should I make it?

Thank you for supporting me!

Roland

Toolstrip (obsolete as of Q3 2010)

answered on 21 Mar 2009

2 answers

334 views

Dynamically adding Checkbox within DataGridView

I'm using the code from the help to create a Checkbox within my datagridview

    
                 GridViewCheckBoxColumn checkBoxColumn = new GridViewCheckBoxColumn();  
        
                  checkBoxColumn.DataType = typeof(int);  
        
                  checkBoxColumn.UniqueName = "Selected";  
        
                  checkBoxColumn.FieldName = "Selected";  
        
                  checkBoxColumn.HeaderText = "";  
        
                  radGVTables.MasterGridViewTemplate.Columns.Add(checkBoxColumn);

Then I set the data souce equal to my oracle query. The first time around it's fine but when I make a change to one of the drop downs the data changes so I remove this column and readd it but it keeps adding it to the end of the grid instead of position zero like I need it to be. What is the best way around this?

Also why when I rebind to my datagridview does the checkbox still stay checked? Do I have to remove and readd the column everytime?

Thank You

GridView

answered on 20 Mar 2009

	GridViewCheckBoxColumn checkBoxColumn = new GridViewCheckBoxColumn();
	checkBoxColumn.DataType = typeof(int);
	checkBoxColumn.UniqueName = "Selected";
	checkBoxColumn.FieldName = "Selected";
	checkBoxColumn.HeaderText = "";
	radGVTables.MasterGridViewTemplate.Columns.Add(checkBoxColumn);