Questions on UI for WinForms Forum

2 answers

262 views

Hello guys! I have a small deal with DropDownList...

I need to create a path selector, and this is how I see it:
- when I'm writing "C:\" DropDown starts showing AutoComplete options
- Paths that were in usage (it will be decided after some program runs) it will save it to its DataSource.

Standard Combox can do all of theese requirements, It will be like:
AutoCompleteSource = AutoCompleteSource.FileSystemDirectories
and after save the "good" paths to DataSource.

I find somthing same in the Telerik lib - a DropDownList but it hasn't property AutoCompleteSource where I can set AutoCompleteSource.FileSystemDirectories...

I continued to search for solutions and found RadMaskedEditBox that has AutoCompleteSource like I want, but has no DropDownMenu for saving used pathes.
If there other solutions that I didn't see? I don't want to write algorithm for DropDownList which will AutoComplete directories, I think there is a more beautiful solution.

Thanks!

DropDownList

answered on 30 Jan 2018

3 answers

631 views

Set null/blank for SpinEditor

When binding data to SpinEditor, I want to display value number (double?, decimal?) for SpinEditor, so I want seperate between 0 and blank/null. How can I set it be default?

SpinEditor

answered on 30 Jan 2018

1 answer

264 views

Cannot change Taskbar Icon on RadForm

I tried searching for this but apparently I'm the only one with this issue right now.

So here's the very basics: My app has a radform with a button. You click this button and it creates another RadForm, but this one is a FormBorderStyle FixedToolWindow. When I hit Alt-Tab and see it, it's not the icon I assigned to the Form. (via the Designer with the Form Icon property) It's the default app Icon.

Attaching what it looks like. (it's the selected one) This icon is the same in the Taskbar as well. The Application Icon shows up just fine though (That's the AC one in the attached pic)

How do I change the form Icon?

VS 2015

Windows 8.1 64bit

Telerik 17.1.221.0

Form

answered on 30 Jan 2018

5 answers

147 views

ColumnChooser multi selection

Hello,

is it possible to select more than one column at once?

Kind regards

Marc

GridView

answered on 29 Jan 2018

3 answers

451 views

[Solved] RowSourceNeeded Problem

I have a RowSourceNeeded event, and inside that event I create my child GridView and add rows to it. There are conditions that would keep me from adding the child GridView; however, I still need to add this child when I do have the data required to do so.

In this event I check a property "model.Parameters" which could be null; however, it is not always going to be null (after handling the RowSourceNeeded event) and when not null I need to add the child GridView.

Here's where I add it.

// get the analysis parameter differences for this row (scan)

private async void BatchComparisonGrid_RowSourceNeeded(object sender, GridViewRowSourceNeededEventArgs e)

{

// tell user we're getting the analysis parameters

UpdateWaitingBar(ElementVisibility.Visible, "Getting analysis parameters");

// get item bound to the row

ComparisonScanViewModel model = e.ParentRow.DataBoundItem as ComparisonScanViewModel;

await Task.Factory.StartNew(() =>

{

if (null != model && null != model.Parameters)

{

// I don't do anything here, I just needed to cause 'model.Parameters' to

// be called since it is a timely call.

}

});

// update the UI

if (null != model &&

null != model.Parameters)

{

foreach (ComparisonAnalysisParameterViewModel am in model.Parameters)

{

// build values to go in the row details grid

GridViewRowInfo row = e.Template.Rows.NewRow();

row.Cells["Description"].Value = am.Title;

row.Cells["Value"].Value = am.Value;

e.SourceCollection.Add(row);

}

e.ParentRow.IsExpanded = true;

}

// tell the user we're done

UpdateWaitingBar(ElementVisibility.Collapsed);

}

Later, I'm listening to the CurrentRowChanging event. Here I can get the same data from the model and potentially build the child GridView; however, I don't have the necessary information required that was provided to me in the RowSourceNeeded event. I.e. e.Template and e.SourceCollection.

// row is changing in the grid and time to expand that item to show the details for the row

private void BatchComparisonGrid_CurrentRowChanging(object sender, CurrentRowChangingEventArgs e)

{

if (e.NewRow is GridViewHierarchyRowInfo)

{

foreach (var item in BatchComparisonGrid.Rows)

{

item.IsExpanded = false;

}

// get model

ComparisonScanViewModel model = e.NewRow.DataBoundItem as ComparisonScanViewModel;

if(null != model.Parameters)

{

// code would go here that checks to see if this row already had the child GridView

// added, and if not AND model.Parameters is not null, then we'll add the child GridView now.

// BUT, how to do this from here ????

}

// expand

e.NewRow.IsExpanded = true;

}

Is there some way to access what I need from the CurrentRowChanging event in order to add the child GridView...since the RowSourceNeeded event is never raised again after the first time it is raised?

GridView

answered on 29 Jan 2018

2 answers

117 views

Excel Document VSTO: "Associated Diagram" in the RadDiagramRibbonBar

While trying to build a quick POC using Telerik diagram control I came upon this issue.

When I try to bind "Associated Diagram" in the RadDiagramRibbonBar, I get an error when I click on the Drop down control.

---------------------------
Microsoft Visual Studio
---------------------------
Error using the dropdown: Unable to cast object of type 'System.Windows.Forms.UserControl' to type 'System.Windows.Forms.Form'.
---------------------------
OK
---------------------------

I understand that an Excel Document Action Pane is in effect a UserControl type but I was wondering if there was a work around to this scenario.

Diagram, DiagramRibbonBar, DiagramToolBox

answered on 29 Jan 2018

3 answers

290 views

RadDocument docx -> pdf missing watermark

Greetings,

Using the newest Telerik version updated from Telerik Control Panel.

Goal: Use OpenXML. Make a program that can load a docx document, add a watermark, save to docx and convert to pdf.

I've made a program that reads a docx document into a WordprocessingDocument. It then adds a watermark and saves the docx. This works and afterwards i verified in Word 2013, that the watermark is in fact in the file.

Then i need to convert this docx to a pdf using RadDocument & PdfFormatProvider. So i read the docx into a RadDocument using docxprovider.Import(stream) and save it using providerPdf.Export(document, output).

The outcome is a pdf document without the watermark.

What am i missing? Please advise.

(I tried converting the very same generated docx document to pdf using a free online service, and it's working, adding a watermark to the generated pdf.)

Best Regards,
T

General Discussions

answered on 26 Jan 2018

3 answers

381 views

[Solved] CellClick not always raised

Don't know how else to describe it. There doesn't seem to be any good explanation. For some rows, the first time I click a cell in the row the event is raised. And then on subsequent clicks on those rows the event is never raised.

GridView

answered on 25 Jan 2018

1 answer

417 views

[Solved] Left align text in Column

Hi

How can I left align the text in the virtualGrid (with only one column and AutoSizeColumnsMode set to Fill).

VirtualGrid

answered on 25 Jan 2018

1 answer

778 views

Border and Background Color of Context Menu

Hello again folks.

Can someone please show me how to edit the border and background colors of the DesktopAlert Context Menu that appears when the "Options" button is clicked?

Thank you!

-Curtis

DesktopAlert

answered on 25 Jan 2018