Questions on UI for WinForms Forum

1 answer

120 views

Adding GridViewSummary totals at runtime

Hello,

I have RadGridView for Winforms 2012 Q1, it has the AutoGenerateColumns property set to True so the number of columns is dictated by the datasource. I'd like to add totals to gridview for the numeric data, I can do this at design time using the SummaryRowsBottom property/collection but since I do not know how many columns will be display I need to do this at runtime. I do know that the columns I want to Sum start at column 2 to TotalNumOfColumns. So I can iterate through the columns collection ...I'm just not sure which event is the best to add the summary nor the syntax.

Thanks

GridView

answered on 23 Nov 2012

24 answers

509 views

Moving, Resizing Appoitments

Hi ,
I created a custom data provider as directed in http://www.telerik.com/help/winforms/using_a_data_provider.html to populate my appoitnment from the database.

Now How do I save the appointment details when the appointment is moved or resized.

thanks
santosh

Scheduler and Reminder

answered on 23 Nov 2012

7 answers

518 views

Selecting first item in RadComboBox

Hi,

I upgraded my application from 2009.Q1 to 2010.Q3.

I have code to create RadComboBox dynamically and bind dataset to ComboBox and set to 'no selection' like this:

radComboBox.Text = null;
radComboBox.SelectedValue = null;
radComboBox.SelectedIndex = -1;

The code which was working in previous version is not working in new version. It is selecting first item in the list items.

I tried setting following ways also:

radComboBox.CloseDropDown();
radComboBox.Text = "Select Option";

&

radComboBox.CloseDropDown();
radComboBox.Text = " ";

In both the cases, it is selecting the first item.

So what changed in new version, that causes not to work.

Thanks for any help.

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 23 Nov 2012

1 answer

116 views

Marked Zone Chart

Hi Telerik,

Is this Marked Zones Chart available in “2011.2 11.831 (Aug 31, 2011)” version of Windows forms

Regards

Vinodh

Chart (obsolete as of Q1 2013)

answered on 23 Nov 2012

4 answers

512 views

Need to open Drop down event after lost focus

Hi,

I want to know how to open drop down for Rad Multi - Column combo box even after lost focus from multi-column combo box i..e multi-column combo box leave event.

Thanks & Regards,
Surya.

MultiColumn ComboBox

answered on 23 Nov 2012

4 answers

120 views

Limiting node zone selection

Hi,

Is there a way to restrict a RadTreeNode selection zone? In other words, I want to select/highlight a node only when the mouse is over the tree node name, and then not being able to select/highlight a node when the mouse is located in a blank space.

Regards.

Treeview

answered on 23 Nov 2012

1 answer

304 views

Table fixed width in RichTextBox

Hey there,

I am having troubles rerendering/reloading/reimporting the fixed/preferred width of a table within the RichTextBox:

Here is how I insert my table:

var table = new Table

{

Borders = new TableBorders(new Border(1, Telerik.WinControls.RichTextBox.Model.BorderStyle.Single, Color.Black)),

LayoutMode = TableLayoutMode.Fixed,

PreferredWidth = new TableWidthUnit(200)

};

for (int i = 0; i < 2; i++)

{

var row = new TableRow();

for (int j = 0; j < 2; j++)

{

var cell = new TableCell

{

Background = Color.White,

Padding = new Padding(3)

};

var paragraph = new Paragraph();

var span = new Span { Text = "c"+ i + j };

paragraph.Inlines.Add(span);

cell.Blocks.Add(paragraph);

row.Cells.Add(cell);

}

table.Rows.Add(row);

}

this

.richTextBox.InsertTable(table);

This works fine. The RichTextBox control inserts the table with the preferred width. The HTML code it creates after exporting is:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>Untitled</title>

<style type="text/css"

>  .p_384D933F { margin: 0px 0px 0px 0px;text-align: left;text-indent: 0pt;padding: 0px 0px 0px 0px; }   .s_6BF1D20F { font-family: 'Calibri';font-style: normal;font-size: 16px;color: #000000; }   .p_CC664AAA { margin: 0px 0px 12px 0px;text-align: left;text-indent: 0pt;padding: 0px 0px 0px 0px; }   .tbl_77AF2C2D { border-collapse: collapse;table-layout: fixed;width: 200px; }   .tc_C0034B80 { border-left: 1px solid #000000;border-top: 1px solid #000000;border-right: 1px solid #000000;border-bottom: 1px solid #000000;padding: 3px 3px 3px 3px;background-color: #FFFFFF;vertical-align: top; }   </

style>

</head>

<body>

<p class="p_384D933F"><span class="s_6BF1D20F"> </span></p>

<table class="tbl_77AF2C2D">

<tr>

<td class="tc_C0034B80" align="left" valign="top">

<p class="p_CC664AAA"><span class="s_6BF1D20F">c00</span></p>

</td>

<td class="tc_C0034B80" align="left" valign="top">

<p class="p_CC664AAA"><span class="s_6BF1D20F">c01</span></p>

</td>

</tr>

<tr>

<td class="tc_C0034B80" align="left" valign="top">

<p class="p_CC664AAA"><span class="s_6BF1D20F">c10</span></p>

</td>

<td class="tc_C0034B80" align="left" valign="top">

<p class="p_CC664AAA"><span class="s_6BF1D20F">c11</span></p>

</td>

</tr>

</table>

<p class="p_384D933F"><span class="s_6BF1D20F"> </span></p>

</body>

</html>

Rendering it in any browser also works fine. The table's width is still 200.

However, if I try to import that HTML into the RichTextBox control again:

IDocumentFormatProvider provider = new HtmlFormatProvider();

Byte[] convertedText = Encoding.ASCII.GetBytes(htmlStream);

RadDocument document = provider.Import(convertedText);

richTextBox.Document = document;

The RichTextBox control renders the table with auto-fit style, means the table's fixed width 200 renders incorrectly.

Am I doing anything wrong in the import call or is this a bug in the control?

Thanks,
Jean

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 23 Nov 2012

3 answers

430 views

DropDownList & Checkboxes

Requirements

RadControls version 2012.2.912.40
.NET version 4.0
Visual Studio version 2010
programming language VB.Net

PROJECT DESCRIPTION
I tried to reproduce the demo sample that generates the Check-box in the drop-down list. In the Demo applications it is called
Dropdown & List/Creating New Items

The VB.Net code seems to be a missing event details as there are no handles int he code to copy for the events below

Private Sub ItemDataBound(ByVal sender As Object, ByVal args As ListItemDataBoundEventArgs)

Private Sub ItemDataBinding(ByVal sender As Object, ByVal args As ListItemDataBindingEventArgs)

Private Sub CreatingVisualListItem(ByVal sender As Object, ByVal args As CreatingVisualListItemEventArgs)

I added some handles, but dont seem to get the Dropdown to generate properly

Private Sub ItemDataBound(ByVal sender As Object, ByVal args As ListItemDataBoundEventArgs) Handles RadDropDownList1.ItemDataBound, RadListControl1.ItemDataBound

Private Sub ItemDataBinding(ByVal sender As Object, ByVal args As ListItemDataBindingEventArgs) Handles RadDropDownList1.ItemDataBinding

Private Sub CreatingVisualListItem(ByVal sender As Object, ByVal args As CreatingVisualListItemEventArgs) Handles RadListControl1.CreatingVisualListItem

I tried to modify the code but could not get the the check-box in the drop-down item ,while it does in the List-box

There seems to be a missing event, and in the demo code?

Thanks

Denis

DropDownList

answered on 23 Nov 2012

3 answers

218 views

System.OutOfMemoryException

Hi,

I recently got the below exception, couldn't reproduce it again.
Any idea on this,

:Error At: radpageview1_SelectedPageChanging
| System.OutOfMemoryException | Exception of type 'System.OutOfMemoryException' was thrown. | mscorlib | at System.Collections.Generic.Dictionary`2.Initialize(Int32 capacity)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at Telerik.WinControls.RadPropertyValueCollection.GetEntry(RadProperty prop, Boolean createNew)
at Telerik.WinControls.RadElement.set_ShouldPaint(Boolean value)
at Telerik.WinControls.Primitives.FillPrimitive.InitializeFields()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.UI.ScrollBarButton.CreateChildElements()
at Telerik.WinControls.RadElement.CallCreateChildElements()
at Telerik.WinControls.RadElement.Construct()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.RadItem..ctor()
at Telerik.WinControls.UI.ScrollBarButton..ctor(ScrollButtonDirection direction)
at Telerik.WinControls.UI.RadScrollBarElement.CreateChildElements()
at Telerik.WinControls.RadElement.CallCreateChildElements()
at Telerik.WinControls.RadElement.Construct()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.RadItem..ctor()
at Telerik.WinControls.UI.RadScrollBarElement..ctor()
at Telerik.WinControls.UI.RadScrollLayoutPanel.CreateChildElements()
at Telerik.WinControls.RadElement.CallCreateChildElements()
at Telerik.WinControls.RadElement.Construct()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.UI.RadScrollLayoutPanel..ctor()
at Telerik.WinControls.UI.RadScrollViewer.CreateScrollLayoutPanel()
at Telerik.WinControls.UI.RadScrollViewer.CreateChildElements()
at Telerik.WinControls.RadElement.CallCreateChildElements()
at Telerik.WinControls.RadElement.Construct()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.RadItem..ctor()
at Telerik.WinControls.UI.RadScrollViewer..ctor()
at Telerik.WinControls.UI.RadDropDownMenuElement.CreateChildElements()
at Telerik.WinControls.RadElement.CallCreateChildElements()
at Telerik.WinControls.RadElement.Construct()
at Telerik.WinControls.RadElement..ctor()
at Telerik.WinControls.UI.RadDropDownMenu.CreatePopupElement()
at Telerik.WinControls.UI.RadDropDownMenu.InitializeChildren()
at Telerik.WinControls.UI.RadDropDownMenu..ctor(RadElement ownerElement, RadDropDownMenu parentPanel)
at Telerik.WinControls.UI.RadDropDownMenu..ctor()
at Telerik.WinControls.UI.RadContextMenuDropDown..ctor()
at Telerik.WinControls.UI.RadContextMenu..ctor(IContainer owner)
at Telerik.WinControls.UI.RadContextMenu..ctor()
at Telerik.WinControls.UI.RadMaskedEditBoxElement..ctor()
at Telerik.WinControls.UI.RadMaskedEditBox.CreateChildItems(RadElement parent)
at Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent)
at Telerik.WinControls.RadControl.ComponentOverrideElementTree.CreateChildItems(RadElement parent)
at Telerik.WinControls.RadControl.Construct()
at Telerik.WinControls.RadControl..ctor()
at Telerik.WinControls.UI.RadMaskedEditBox..ctor()
at Form1.InitializeComponent()

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