Questions on UI for WinForms Forum

2 answers

150 views

I am facing performance issues adding TabItems to the TabStrip when the number of TabItems required is more than 20. Sample code is provided below:-

Are there any property settings I can set/use in order to improve performance ?

DateTime start_time = DateTime.Now;
RadItemCollection tabCol = new RadItemCollection();
for (int intLoop = 0; intLoop < 30; intLoop++)
{
TabItem newTab = new TabItem(intLoop.ToString());
newTab.Tag = intLoop.ToString();
newTab.Visibility = ElementVisibility.Visible;
newTab.BackColor = Color.Blue;
newTab.DisplayStyle = DisplayStyle.Text;
newTab.Name = intLoop.ToString();
tabCol.Add(newTab);
}
radTabStrip1.Items.AddRange(tabCol);
TimeSpan end_time = DateTime.Now.Subtract(start_time);
MessageBox.Show(end_time.ToString());

Tabstrip (obsolete as of Q2 2010)

answered on 28 Dec 2007

1 answer

103 views

Question on deprecated property

I noticed at some point the "TreeView" property on a node was deprecated.

What is the currently correct way to find out what TreeView the node is on?

Thanks.

Treeview

answered on 28 Dec 2007

7 answers

206 views

Dropdown not dropping down beneath combo box

I am handling the Entered event for the combobox and calling its ShowDropDown() method. Now, when I click on the combobox's dropdown button, the dropdown list is offest to the right by a significant amount. If I collapse and expand it again, it is correct. Move to another control and then drop it down again, and the same odd behavior again.

Any ideas of where to look for the cause of this?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 27 Dec 2007

5 answers

482 views

Populate RadGridView with XML

Hi, we are testing this package in VB.NET, how can i populate a RadGridView with a XML file?

I get this XML from a PHP (NuSOAP) webservice, i need to add this XML to an Array or can i populate direct to the Grid control?

thank's

GridView

answered on 27 Dec 2007

1 answer

175 views

Pie Chart question

Hi All :) ,

is it possible know the region area when the user click on a pie chart ?

For example:

I have a pie chart that displays the number of schedules jobs that that runs on a daily basis; let say 40 jobs failed and 50 succeed .. I want to know if it is possible
to know if the users clicks on Failures region it will fires an event to drill down a grid and show the details of these jobs?

Thanks In Advance

Chart (obsolete as of Q1 2013)

answered on 27 Dec 2007

3 answers

414 views

Item background color

Hi,

I'm trying to use your ComboBoxElement control inside a RibbonBar.

My goal is to create a combo box "color picker" where the user would click on the drop down menu and each of the items would have it's own color. Here's what I have tried:

private

void InitBackgroundCombo()
{
    // this returns all the color in the Color struct
    Color[] systemColors = GetAllColors();
    for (int i = 0; i < systemColors.Length; i++)
    {
        RadComboBoxItem item = new RadComboBoxItem();
        item.ForeColor = systemColors[i];
        item.Text = systemColors[i].Name;
        item.BackColor = systemColors[i];
        cbxBackground.Items.Add(item);
    }
}

This doesn't work though. The ForeColor property works but not the BackColor. The BackColor is always White.

Can you help?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 21 Dec 2007

1 answer

136 views

GridView question

I'm workin with RadControls for WinForms. I have two questions about GridView.
First - how to turn off default ContextMenuStrip which appears after I click r-mouse button and hold it?
Second - I don't know if it's an error but after migration from Q2 filter text box (most right) is in front of the scrollbar (previously it wasn't)

GridView

answered on 21 Dec 2007

1 answer

53 views

Silverlight control suggestion

Hi. I attended the Silverlight demo last week and it blew me away. Very impressive stuff. Here's a Silverlight control you may wish to develop:

r.a.d. slideshow: Enable users to put together images, text, and animation using the easy-to-use design time controls that Telerik does so well. For example, users could do product demos and tutorials using this control, stitching together screen captures along with audio and mouse movements, screen transitions, and ability to export to PPTX/PDF formats.

Users could select the images and enter the text for each slide and choose animation for objects.

New Product Suggestions

answered on 21 Dec 2007

1 answer

174 views

radwaitingbar theming issue

Hi,

I am creating a waitingbar control at runtime and when the control is displayed the default theming of the control is not applied. White bar is shown.

radWaitingBar1 = new Telerik.WinControls.UI.RadWaitingBar();
radWaitingBar1.Location = new System.Drawing.Point(110, 38);
radWaitingBar1.Name = "radWaitingBar1";
radWaitingBar1.Size = new System.Drawing.Size(150, 15);
radWaitingBar1.TabIndex = 0;
radWaitingBar1.WaitingSpeed = 10;
radWaitingBar1.ThemeClassName = "Telerik.WinControls.UI.RadWaitingBar";

If I place the control on the form at design time, the theming is shown. (green bar)

I was hoping to avoid having to set the UI primitives. What properties should I be setting to get the control's default theme?

Cheers
Peter

WaitingBar

answered on 21 Dec 2007

1 answer

238 views

Cascading Combo Box Columns

Hi,

I'm a relatively new user of the telerik RadControls in Windows Forms and I'm looking to get a piece of functionality working.

Our product requires us to classify a list of items into a "Type / Category / Sub Category" hierarchy. We would like the items to be displayed in a RadGridView with one column each for "Type", "Category" and "Sub Category".

When a value is selected for the "Type" column the corresponding "Category" cell should populate with the appropriate Category values for that Type value. This behavior should be repeated when the "Category" column value is selected.

I have tried creating custom columns as described in this post: "How to add a ProgressBar column ?" however I couldn't seem to get the cell's value to update properly.

I have seen another thread (Dynamic ComboBox) where something similar to what I wish to achieve is described but I am unsure as to the solution. Wouldn't changing the column's DataSource alter values in all the cells?

Which event is best to handle in order to react after the grid's datasource has been updated?

GridView

answered on 20 Dec 2007