Questions on UI for WinForms Forum

2 answers

86 views

Problem Setting SelectedDates collection

Hello,

I'm using a RadCalendar within my WinForms application, I'm having an issue setting the SelectedDates collections programmatically. The code below works only if I uncomment the statement dtDate = new DateTime(dtDate.Year, dtDate.Month, dtDate.Day); It sets the dates and highlights them correctly when I have multiple dates. If I do not create an instance of a DateTime object as you see below the calendar seems to only accept the first date in my dataset. This is odd since the DateTime.TryParse statement returns a valid datetime into dtDate variable and I feel its unnecessary to have to set it again. Using VS2008 Framework 3.5 build 2011.3.11.1116.

DateTime dtDate;
foreach (DataRow rw in oDS.Tables[0].Rows)
{
DateTime.TryParse(rw["eDate"].ToString(), out dtDate);
//dtDate = new DateTime(dtDate.Year, dtDate.Month, dtDate.Day);
radCalendar1.SelectedDates.Add(dtDate);
}

Thanks Kerry

Calendar, DateTimePicker, TimePicker and Clock

answered on 20 Feb 2012

5 answers

157 views

DragEnding event

Hi.

I have a treeview and I need to impose more restrictions on the drag and drop action. For example, if the node and the target node are at different levels I cancel the drag and drop action using the DragEnding event.

But I need more. I have to know where the node is going to be dropped onto the target node( above, below, within). The node cann't become a child node for the target node.

Can I find out this within the DragEnding event?

Thanks.

Treeview

answered on 20 Feb 2012

5 answers

1.5K+ views

Hiding a tree node

Hello,

1. I'm having difficulties hiding a folder tree node.
Setting the visibility to collapsed of the NodeElement will make the rows of the tree overlapping each other. How can I resolve this?

private void SignalTreeView_NodeFormatting(object sender, TreeNodeFormattingEventArgs e)

{

DataRowView rowView = (DataRowView)e.Node.DataBoundItem;

e.NodeElement.ImageElement.Image = (Image)rowView[TreeNodes.COL_ICON];

TreeNode tn = rowView[TreeNodes.COL_ITEM] as TreeNode;

if (tn is FolderNode && e.Node.Nodes.Count == 0)

{

e.NodeElement.Visibility = ElementVisibility.Collapsed;

}

See the attached image!

2. Another problem is that I'm not able to hide the folder nodes when all children are filtered out (using custom filter). Is there any way I can do this? Folders can be multilevel.

Best Regards,
Zoltán Nagy

Treeview

answered on 20 Feb 2012

1 answer

121 views

GridView GridViewDateTimeColumn

I have a RadGridView with a GridViewDateTimeColumn added as follows

With radGridView

Dim dtFromCol As New GridViewDateTimeColumn("FromDate")

With dtFromCol

.Format = DateTimePickerFormat.Custom

.CustomFormat = "M/d/yy" 'I'm looking for the shortest date format, i.e. 1/1/12 or 12/31/12

.Width = 70

End With
.Columns.Add(dtFromCol)
.
.Other columns follow
.
End With

When I click the cell I get the datetime picker & the date selected shows up in the desired format (M/d/yy) in the cell, but when I click or Tab away from the cell the cell value changes to a long date format like 2/14/2012 12:00:00 AM . I'm trying not to display the full year (2012) and I don't want the time.
I have tryed customizing the cell's editor in the CellEditorInitialized event or forcing the desired date into the cell in the CellValidated event to no avail. Thanks for any help.

GridView

answered on 20 Feb 2012

5 answers

176 views

radgridview hierarchy refreshing hierarchy grid closes

Hi,
I have a radgridview setup wth a hierarchy. I would like this grid to refresh every ten seconds as new information could be added to the database from another source, so it needs to be kept up-to-date. I did have a timer which would fire every ten seconds which reloaded the data.

The only problem is, if I have a row expanded or select a row and the grid reloads the selected row is lost and the sub grids close. Is there any way I can keep this open while the data refreshes? ie the new row would be added at the bottom?

I have followed the http://www.telerik.com/community/forums/winforms/gridview/radgridview-hierarchy-refreshing-hierarchy-grid-closes.aspx example given when i debug the code i can see it is storing the expanded rows but while Restoring

if

(expanded.Contains(item.DataBoundItem))

{

item.IsExpanded =

true;

}

the condition is not satisfyting. Can U suggest Me How to do the above Task

Thanks

GridView

answered on 17 Feb 2012

5 answers

289 views

RadTreeNode.Nodes.Clear() scrolls RadTreeView to first node

Hi,

When using a node's Nodes.Clear() method the tree view scrolls up to the top and shows the tree view's first node.

If I load the Form2 and scroll down a bit so the first node is no longer visible, and check the check box, then double click on a node it will expand, and make the top node visible.

My work around is to remove each node individually, i.e.
If I load the Form2 and scroll down a bit so the first node is no longer visible, then double click on a node it will expand.

Public Class Form2

Inherits System.Windows.Forms.Form

'Form overrides dispose to clean up the component list.

<System.Diagnostics.DebuggerNonUserCode()> _

Protected Overrides Sub Dispose(ByVal disposing As Boolean)

Try

If disposing AndAlso components IsNot Nothing Then

components.Dispose()

End If

Finally

MyBase.Dispose(disposing)

End Try

End Sub

'Required by the Windows Form Designer

Private components As System.ComponentModel.IContainer

'NOTE: The following procedure is required by the Windows Form Designer

'It can be modified using the Windows Form Designer.

'Do not modify it using the code editor.

<System.Diagnostics.DebuggerStepThrough()> _

Private Sub InitializeComponent()

Me.RadTreeView1 = New Telerik.WinControls.UI.RadTreeView()

Me.CheckBox1 = New System.Windows.Forms.CheckBox()

CType(Me.RadTreeView1, System.ComponentModel.ISupportInitialize).BeginInit()

Me.SuspendLayout()

'

'RadTreeView1

'

Me.RadTreeView1.BackColor = System.Drawing.SystemColors.Control

Me.RadTreeView1.Cursor = System.Windows.Forms.Cursors.Default

Me.RadTreeView1.Font = New System.Drawing.Font("Segoe UI", 8.25!)

Me.RadTreeView1.ForeColor = System.Drawing.Color.Black

Me.RadTreeView1.Location = New System.Drawing.Point(12, 11)

Me.RadTreeView1.Name = "RadTreeView1"

Me.RadTreeView1.RightToLeft = System.Windows.Forms.RightToLeft.No

'

Me.RadTreeView1.RootElement.ForeColor = System.Drawing.Color.Black

Me.RadTreeView1.Size = New System.Drawing.Size(150, 250)

Me.RadTreeView1.SpacingBetweenNodes = -1

Me.RadTreeView1.TabIndex = 3

Me.RadTreeView1.Text = "RadTreeView1"

'

'CheckBox1

'

Me.CheckBox1.AutoSize = True

Me.CheckBox1.Location = New System.Drawing.Point(168, 23)

Me.CheckBox1.Name = "CheckBox1"

Me.CheckBox1.Size = New System.Drawing.Size(81, 17)

Me.CheckBox1.TabIndex = 4

Me.CheckBox1.Text = "CheckBox1"

Me.CheckBox1.UseVisualStyleBackColor = True

'

'Form2

'

Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)

Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

Me.ClientSize = New System.Drawing.Size(292, 273)

Me.Controls.Add(Me.CheckBox1)

Me.Controls.Add(Me.RadTreeView1)

Me.Name = "Form2"

Me.Text = "Form2"

CType(Me.RadTreeView1, System.ComponentModel.ISupportInitialize).EndInit()

Me.ResumeLayout(False)

Me.PerformLayout()

End Sub

Friend WithEvents RadTreeView1 As Telerik.WinControls.UI.RadTreeView

Private Sub Form2_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

For i = 0 To 20

Dim node = RadTreeView1.Nodes.Add("node " + i.ToString)

For j = 0 To 20

Dim n2 = node.Nodes.Add("node " + i.ToString + " " + j.ToString)

Next

RadTreeView1.LazyMode = True

End Sub

Private Sub RadTreeView1_NodeExpandedChanged(sender As System.Object, e As Telerik.WinControls.UI.RadTreeViewEventArgs) Handles RadTreeView1.NodeExpandedChanged

Dim n = RadTreeView1.SelectedNode

If n Is Nothing Then Return

If CheckBox1.Checked Then

n.Nodes.Clear()

Else

While n.Nodes.Count > 0

n.Nodes.RemoveAt(0)

End While

End If

For i = 0 To 10

Dim node = n.Nodes.Add("Expando " + i.ToString)

Next

End Sub

End Class

My experience with .Net is 7 years. My experience with Rad is about 2 weeks.

OS version and applied service packs

Microsoft Windows Server 2003, Standard Edition, Service Pack 2

Regional and language settings, if different from En-US

English (Australia)

.NET version (.NET2, .NET3, .NET3.5)

.NET 4.0.30319 SP1Rel, Visual Studio 2010 Version 10.0.40219.1 SP1Rel

Exact version of the Telerik product

Runtime Version v2.0.50727, Version 2011.2.11.831

Treeview

answered on 17 Feb 2012

1 answer

100 views

Can we merge the forms designed in Telerik 2011 Q2 and Q3 ?

Hi,

We are a group of developers developing in various place and finally will merge all the forms in one place.

Let me know if a person developed an application using Telerik 2011 Q3
and another one developed using Telerik 2011 Q2
(For Example: we have totally 10 forms. 7 forms were designed in Telerik2011 Q3 and 3 were designed in Telerik2011 Q2
we like to open forms developed in Telerik2011 Q3 in a system having telerik 2011 Q2 )
if we do so. Its getting error. (please refer attached image file to see the error page)
I mean its getting error while merging Telerik 2011 Q3 with Telerik 2011 Q2

I request Telerik Support team to give a solution as quick as possible.

Note: I have attached the Err.Page screen shot.

Please reply as soon as possible.
Regards,
Thiru.

General Discussions

answered on 17 Feb 2012

3 answers

254 views

GridHeaderCellElement in C++

I am using C++/CLI with the Telerik GridView. I have a checkbox column which I wanted to add the CheckBoxHeaderCell class to. (Reference: http://www.telerik.com/support/kb/winforms/gridview/add-check-uncheck-all-check-box-in-the-header-cell.aspx). I wrote the example and compiled it in C++/CLI from the given C# code. However, I do not know how to tell my grid view to USE this class as a columns header cell. Any help would be appreciated!

- John

GridView

answered on 17 Feb 2012

6 answers

543 views

How to make second column as hierarchical tree view column.

Hi,
I am displaying data in the grid as hierarchical form using a self reference, here treeview column is displayed in the first column as shown in attached screen shot1 but i need to display the treeview node in second column instead of first column as shown in attached screen shot 2. How can i achieve the output shown in screen shot 2?

Thanks..

GridView

answered on 17 Feb 2012

1 answer

116 views

How to localize? (no RadListViewLocalizationProvider)

How can I localize the RadListView?
For the RadGridView i use the "RadGridLocalizationProvider", but there is no corresponding class for the RadListView (or I can't find it).

ListView

answered on 17 Feb 2012