Questions on UI for WinForms Forum

1 answer

244 views

GridViewComboBoxColumn - showing an initial value

The documentation states:

> If you want to set initial values, you should match the GridViewComboBoxColumn to a column which has appropriate values in it. To do this, you should set the FieldName of the GridViewComboBoxColumn to be the same as the name of the existing column.

Can I see a code sample of how this is done?

I have a text column that I am able to successfully bind to show the values, but I'm not able to replace that text column with a ComboBoxColumn and still have it set the initial values like the text column does. Here's a code sample of what I've tried:

uxgrdBindingsGrid.MasterTemplate.Columns.Clear();

uxgrdBindingsGrid.AutoGenerateColumns = false;

uxgrdBindingsGrid.DataSource = bindings.ToList<SymbolBinding>();

// this textbox column displays fine

GridViewTextBoxColumn dataSourceTextColumn = new GridViewTextBoxColumn();

dataSourceTextColumn.Name = "dataSourceTextColumn";

dataSourceTextColumn.HeaderText = "Data Source";

dataSourceTextColumn.FieldName = "DataSourceProperty";

dataSourceTextColumn.TextAlignment = ContentAlignment.MiddleLeft;

dataSourceTextColumn.Width = 150;

dataSourceTextColumn.IsVisible = true;

uxgrdBindingsGrid.MasterTemplate.Columns.Add(dataSourceTextColumn);

// this combobox column displays the drop down list if double-clicked, but does not display any values initially

GridViewComboBoxColumn dataSourceComboColumn = new GridViewComboBoxColumn("DataSourceProperty");

dataSourceComboColumn.Name = "dataSourceComboColumn";

dataSourceComboColumn.HeaderText = "Data Source";

dataSourceComboColumn.DataSource = this.dataSources;

dataSourceComboColumn.DropDownStyle = RadDropDownStyle.DropDownList;

dataSourceComboColumn.ValueMember = "ID";

dataSourceComboColumn.DisplayMember = "Path";

dataSourceComboColumn.FieldName = "DataSourceProperty";

dataSourceComboColumn.TextAlignment = ContentAlignment.MiddleLeft;

dataSourceComboColumn.Width = 150;

uxgrdBindingsGrid.MasterTemplate.Columns.Add(dataSourceComboColumn);

Thanks,
--Jason

GridView

answered on 01 Nov 2012

1 answer

362 views

How to set the CommandBarButton default size

Hi,
I tried to create a commandbar with only CommandBarButton elements, each one displayed as image only.
How can I set by default the size to contains 32x32 images instead of 16x16?

Thank you

CommandBar

answered on 01 Nov 2012

2 answers

187 views

RadAutoCompleteBox - Conditionally format token depending on value

Hi,

I'd like to conditionally format each token in a RadAutoCompleteBox control depending on the value of the each token. For example, I'd like to format all items that can be matched in the AutoComplete collection as green and all unmatched items in red.

There is an introduction on formatting tokens at:

http://www.telerik.com/help/winforms/editors-autocompletetextbox-formatting-blocks.html

however I can't find a property in the token variable that gives me access to the corresponding entry in the Items collection in the RadAutoCompleteBox control so that I can style the token conditionally. How can I get access to corresponding item being formatted?

Kind regards,
Dave.

AutoCompleteBox

answered on 01 Nov 2012

4 answers

129 views

Problem with cellformatting and horizontal scroll

hi ,
I want to hidden the specific commands button in one column depend on cell value ,the first time after loading form everything is OK and buttons are be hidden but after scrolling the grid all other buttons in this column are be hidden too, please advise me with this problem .

Private Sub Grid_Form_CellFormatting(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles Grid_Form.CellFormatting

Try

If TypeOf e.CellElement.ColumnInfo Is GridViewCommandColumn Then

If e.CellElement.RowInfo.Cells("GroupType").Value.ToString <> 3 Then

Dim button As RadButtonElement = CType(e.CellElement.Children(0), RadButtonElement)

button.Visibility = vbHidden

button.BackColor = Color.Peru

End If

Catch ex As Exception

End Try

End sub

GridView

answered on 01 Nov 2012

1 answer

63 views

Looking for Suggestions: 1 Form, 24 Charts

I just wanted to see if anyone had suggestions for the best way to manage 24 charts on a single form that need to have their data refreshed every 30 seconds. I've done this as a web solution for the last couple of years, but recent development on the software we use to populate the database has made it so that they want all of the charting brought into the software itself and shutdown the website.

With the web solution we ran into fairly frequent issues of having things time out or error because of too many calls to the server, or whatever the problem of the month happened to be. So I wanted to post this to get suggestions from anyone else who has done something similar with WinForms.

The charts will have anywhere from 1 to 30 data points, averaging somewhere around 10-12, so I won't be sending a ton of information out there all the time, but I want to make sure that I can maintain the performance of the web version while hopefully avoiding some of the pitfalls that I might not be aware of since this is the first time I will be using the WinForm controls.

Chart (obsolete as of Q1 2013)

answered on 01 Nov 2012

5 answers

1.7K+ views

GridViewCommandColumn click event

I have a GridViewCommandColumn in my RAD Grid View. I want to handle the Command button click event. Please provide sample to how handle it.

GridView

answered on 01 Nov 2012

3 answers

430 views

radWaitingBar vs radWaitingBarElement

What is the difference between these 2 beasts?

I am having a truly miserable time trying to add a radLabelElement (autosized) followed by a radWaitingBarElement in a radStatusStrip.

I note that using the designer, I can add a radWaitingBarElement to the radStatusStrip, but not a radWaitingBar.

These controls are supposedly updated before and after a backgroundworker completes its job. However, they seem to step on each others' toes, so the radlabelElement's text does not get properly updated, even though the code updates it before starting the background worker. I've tried rolling my own by hosting both a radWaitingBar and a radWaitingBarElement in a radLabelElement and a radHostItem added to the radStatusStrips Items.

None of these things actually works.

Ideas?

WaitingBar

answered on 31 Oct 2012

1 answer

108 views

AutoSite Problem

Hi Telerik Team,

I use the Telerik release 2012 Q3 2012 (version 2012.3.1017).

I created a radLabel in the design-mode, set the autosize to false in the property window and resize it.

When I debug my application, I see the attribute autosize is true.

The autosite information is in the ressource-file, but i cannot edit it by the property window.

What I have to do to edit this attribute by the property window?

I look forward to your answer.

Best regards.

Frank

Label

answered on 31 Oct 2012

4 answers

217 views

MultiColumnComboBox Editor in PropertyGrid

Is there a way to use a multicolumn combo box editor in the PropertyGrid?

I've tried creating my own custom editor inheriting from the RadMultiColumnComboBoxElement, but I can't seem to get it working correctly.

Thanks

PropertyGrid