Questions on UI for WinForms Forum

1 answer

137 views

Hi,
I have a gridview populated from a List<> and i want to be able to modify, delete or to add a new row (by clicking on "Add new row " at the bottom of the grid) directly on grid . After the user fills out all columns, he will click on a save button outside the grid. Now, i want to know how to iterate between gridview rows to know wich rows were added an wich were modified, deleted....
And depeding on the row state, i'll do an insert, update or delete on the Database.

Thank u very much!

GridView

answered on 24 Jun 2011

4 answers

133 views

Unable to get hierarchy (+/-) indicators to disappear with empty rows.

Hello I have created this simple bit of code that displays a hierarchial orders grid (see screen1.jpg)

Now I want to hide the +/- buttons if there are no rows (ie Order Ref 2 & 4) - Having searched the threads and copied the functions from those threads (RadGridView1_ViewCellFormatting,IsExpandable & RadGridView1_ChildViewExpanding)

It just hides them all because rowInfo.ChildRows.Count =0! (as per screen2.jpg)

Can anybody spot where I'm going wrong?

Many thanks

Terry



Public

Class Form1

Private Sub Form1_Load(sender As Object, e As System.EventArgs) Handles Me.Load

Dim myOrders = New BindingList(Of Order)()

Dim myOrderLines = New BindingList(Of OrderLines)()

myOrders.Add(New Order(1, "01/01/2011", "Order for Warehouse"))

myOrders.Add(New Order(2, "03/05/2011", "Order for home"))

myOrders.Add(New Order(3, "12/05/2011", "Order ref xyz"))

myOrders.Add(New Order(4, "16/05/2011", "Order ref abc"))

myOrderLines.Add(New OrderLines(1, "Power Supply"))

myOrderLines.Add(New OrderLines(1, "Hard Disk"))

myOrderLines.Add(New OrderLines(3, "Keyboard"))

myOrderLines.Add(New OrderLines(3, "Mouse"))

RadGridView1.AutoGenerateHierarchy = False

RadGridView1.AutoGenerateColumns = True

Dim OrderLinesTemplate As New GridViewTemplate

OrderLinesTemplate.AllowAddNewRow = False

OrderLinesTemplate.DataSource = myOrderLines

'RadGridView1.MasterTemplate.Templates.Add(RolesAndPositionTemplate)

Me.RadGridView1.MasterTemplate.Templates.Add(OrderLinesTemplate)

'create the relation

Dim relation As New GridViewRelation(RadGridView1.MasterTemplate)

relation.RelationName = "Order Lines"

relation.ParentColumnNames.Add("OrderId")

relation.ChildColumnNames.Add("OrderLineId")

relation.ChildTemplate = OrderLinesTemplate

Me.RadGridView1.Relations.Add(relation)

Me.RadGridView1.DataSource = myOrders

End Sub

Private Sub RadGridView1_ViewCellFormatting(sender As Object, e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles RadGridView1.ViewCellFormatting

Dim cellX As GridGroupExpanderCellElement = TryCast(e.CellElement, GridGroupExpanderCellElement)

If cellX IsNot Nothing AndAlso TypeOf e.CellElement.RowElement Is GridDataRowElement Then

If Not IsExpandable(cellX.RowInfo) Then

cellX.Expander.Visibility = ElementVisibility.Hidden

Else

cellX.Expander.Visibility = ElementVisibility.Visible

End If

End Sub

Private Function IsExpandable(rowInfo As GridViewRowInfo) As Boolean

If rowInfo.ChildRows IsNot Nothing AndAlso rowInfo.ChildRows.Count > 0 Then

Return True

Else

Return False

End If

End Function

Private Sub RadGridView1_ChildViewExpanding(sender As Object, e As Telerik.WinControls.UI.ChildViewExpandingEventArgs) Handles RadGridView1.ChildViewExpanding

e.Cancel = Not IsExpandable(e.ParentRow)

End Sub

GridView

answered on 24 Jun 2011

1 answer

93 views

Auto suggest functionality in the GridView.

Hi Guys,
We are working in the Q2 SP1 version. I got one Problem in the Auto suggest functionality in the GridViewComboBox Column in the GridView.

My Requirement is: If i enter the letters as "dab", the Resulting options with in the Combobox is starting with the "dab" options with in the ComboBox Column. But now m getting "dab" options is the Last options in the List, I mean before this option, starting options will starts with c Options. If u want more Clarity see the attachment for Normal dropdown, i need the exact requirement in the GridView Combobox Columns. If it is not possible in the Normal GridView Combobox Column, Pls provide the alternative solution to achieve this functionality.

Thanks,
Karthikeya.

GridView

answered on 24 Jun 2011

1 answer

111 views

Change Row Background Color Once a Row is Created

How can I change the background color of a new row that has just been added. I am currently using RowFormatting for other conditions. Basically, I want to show the user when a value in a cell in a row has changed, or when they add a row. Any suggestions?

GridView

answered on 23 Jun 2011

2 answers

93 views

ExportToExcelML and ChildGrid

Hi

Does ExportToExcelML can export grid even if it has ChildGrid?
if Yes any sample code ?

Regards

GridView

answered on 23 Jun 2011

3 answers

83 views

End-User Ungrouping

Under the newest Telerik controls for Winforms (2011.1.11.419) -- Ungrouping seems to have changed. Instead of being able to drag from the group panel to ungroup - you must hit the "X". My users have a problem with this and would prefer the Drag and Drop Ungrouping feature.

Was this removed? And if so, is there a workaround I might employ?

Thanks

GridView

answered on 23 Jun 2011

3 answers

116 views

DockWindow contents disappear on confirm closing

I want to add a confirm dialog when a user tries do close a dockwindow, I'm using the raddock as a mdicontainer, I use the DockWindowClosing event:

private void radDock1_DockWindowClosing(object sender, DockWindowCancelEventArgs e)

{

if (RadMessageBox.Show("Are you sure", "Confirm"

, MessageBoxButtons.YesNo, RadMessageIcon.Question, MessageBoxDefaultButton.Button1) == System.Windows.Forms.DialogResult.No) {

e.Cancel = true;

}

The problem is that when I call RadMessageBox.Show, all the contents of the radwindow disappear.

How can I fix this so that I can ask for confirmation when closing a raddock window?

Thanks in advance.

Dock

answered on 23 Jun 2011

2 answers

159 views

Using WinForms control in an Access application through interop

We are trying to migrate an Access application to .Net. To do this we use Microsoft's interop toolkit which allows us to create ActiveX controls in .Net. So what it basically comes down to is this: we create a new interop user control, place some WinForms controls on it, build and register the assembly and use it in Access.

After some extensive tests we noticed that Telerik's WinForm controls do not behave well in an Access environment. In a .Net application the controls work just fine.

Here's some examples of things we've seen:

RadGridView: crashes when leaving cells with a RadSpinEditor as their editing control. The application shuts down without showing an error. The event log mentions exception 0xc0000fd, which appears to be a stack overflow.
RadGridView: columns using RadSpinEditor cannot be edited.
RadContextMenu: navigating through the menu using the arrow keys scrolls 3 items up or down instead of one.

I know the controls are not exactly intended to be used like this, but is there anyone else who had similar experiences with the WinForms controls? And has a solution to make the controls more stable?

Greetings,

Kris

General Discussions

answered on 23 Jun 2011

1 answer

126 views

checkbox current value

hi I have a checkbox where I need to check something if it is selected. In the cellbeginedit event I check the value of the checkbox but it is false when I clearly set it to true. Is there a different way to approach this? All I need to do is call a function if the checkbox is set to ticked. The column is also added at run time if that helps. Thanks.

GridView