Questions on UI for WinForms Forum

3 answers

368 views

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

86 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

241 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

326 views

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

368 views

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

719 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

2 answers

85 views

Cannot find TextOrientation through API

Hello there,

I added a RadButton to my WInForm and although I can find TextPrimitive.TextOrientation property in the Designer, I cannot find it through the Telerik API so I can change it in runtime!

Telerik Designer and API are not consistent with each other?

Any idea on how I can resolve my problem?

Thank you,

Maria

Buttons, RadioButton, CheckBox, etc

answered on 25 Jan 2018

1 answer

154 views

Tool Window not DPI

I reported the issue below back in September 2017. It was scheduled for a fix in R1 2018 (here). However, it appears that the problem persists. Did it get missed or is there a setting/option that I'm missing. I think it is a rather major issue for anyone trying to put a DPI aware app together.

This is the problem:

In a DPI aware app, using the docking tool window auto-hide dramatically increases the size of any controls on the window. This can be demonstrated with a new application. Add a RadDock to the form, add a couple of tool windows and a document window, and add a few controls to either of the tool windows (label, button, treeview, property grid, etc.). Run the app as DPI aware at 150 scale. Hide a tool window. Open the tool window. When the tool window slides open all the font and control sizes have greatly increased.

Dock

answered on 25 Jan 2018

9 answers

457 views

GridView within a GridView

I imagine there is a way to show another grid view within a selected row of the parent grid view. This would be something very similar to the row details template within a WPF application. See attached screenshot from a demo WPF app.

GridView

answered on 25 Jan 2018

1 answer

94 views

Localization PieChart

Hi.

Attach an image. When user move mouse over the chart, a tooltip show to the user Value = 1. i want to change "value" text with my Custom text, like "مقدار".

how can do this ?

ChartView

answered on 24 Jan 2018