Questions on UI for WinForms Forum

8 answers

130 views

[Solved] Custom Cell Editor nested controls events

I'm writing a custom editor which have to contains 2 drowdown controls: the second dropdown must be filled on values loaded from DB based on value selected in first dropdown. I need to let user add new values for both dropdowns.

I tried two ways but with no success.

First way: I created a custom editor containing 2 DrowDownListEditorElements and I tried to override EndEdit() method of each object to create new items if needed, but it seems that each EndEdit was never invoked and I cannot intercept when user pass from one dropdown to other, or when exit from the editor.

Second way: I created a custom editor containing a user control containing two RadDropDownList controls and I used the Leave event of each dropDown to obtain excepted behaviour, but all I obtained is that EndEdit() of editor was first called before other event of child/nested controls.(for example if user press TAB when focused on second dropdown, editor EndEdit is fired before the drowdown Leave event handler, so new values aren't created yet and Editor value has not been set.

What's the correct way to manage events in complex grid cell custom editors?

Thnaks.

GridView

answered on 30 Jan 2017

3 answers

303 views

Custom aggregate function for winforms PivotGrid and PivotFieldList

Dear Telerik,

I am using winworms PivotGrid and PivotFeildList.

In the PivotFieldlist I want to have more aggregate functions like upper quartile and lower quartile.

Plese let me know if it is possible to make a custom function.

Thanks,

Nishan.

PivotGrid and PivotFieldList

answered on 26 Jan 2017

1 answer

199 views

Memory not getting released after creating a large mail merge

I am running into a memory issue when trying to perform a mail merge. I need to do two things:
1. Generate individual PDF files to be stored on a file share
2. generate a single PDF so it could be sent to a printer as a single job.

I am noticing, that after my large PDF file is generated, the memory usage remains very large. When I re-run the process, it starts climbing up, but then falls back down to an acceptable level during the generation of single document, only to climb back up during the final single PDF. I am pasting my code below. For some odd reason my random data isn't actually making it into the files, but since that's not my problem at this moment, I am not concerned about it.

using System;

using System.Collections.Generic;

using System.Data;

using System.IO;

using System.Linq;

using System.Threading.Tasks;

using Telerik.WinForms.Documents.FormatProviders.OpenXml.Docx;

using Telerik.WinForms.Documents.FormatProviders.Pdf;

using Telerik.WinForms.Documents.Model;

namespace MailMergeMemoryBenchmark

{

public partial class RadForm1 : Telerik.WinControls.UI.RadForm

{

List<DummyItem> dataSource;

public RadForm1()

{

//get the rest of the string at http://pastebin.com/i6PZiJ1c

byte[] template = Convert.FromBase64String(@"UEsDBBQ...[TRUNCATED]");

dataSource = new List<DummyItem>();

for (int i = 0; i < 1000; i++)

{

dataSource.Add(DummyItem.GetRandom());

}

InitializeComponent();

var provider = new DocxFormatProvider();

radRichTextEditor1.Document = provider.Import(template);

radRichTextEditor1.ScaleFactor = new Telerik.WinForms.Documents.Model.SizeF(.4f, .4f);

radRichTextEditor1.ChangeAllFieldsDisplayMode(FieldDisplayMode.Code);

radRichTextEditor1.Document.ShowMergeFieldsHighlight = true;

radRichTextEditor1.Document.MailMergeDataSource.ItemsSource = dataSource;

}

private async void btnPerformMailMerge_Click(object sender, EventArgs e)

{

btnPerformMailMerge.Enabled = false;

var progress = new Progress<string>(value => UpdateProgress(value));

await Go(progress);

btnPerformMailMerge.Enabled = true;

}

private void UpdateProgress(string value)

{

radLabel1.Text = value + Environment.NewLine;

}

private Task<bool> Go(IProgress<string> progress)

{

return Task.Run(() =>

{

var pdfProvider = new PdfFormatProvider();

PdfExportSettings pdfExportSettings = new PdfExportSettings()

{

ContentsCompressionMode = PdfContentsCompressionMode.Automatic,

ContentsDeflaterCompressionLevel = 9,

FloatingUIContainersExportMode = PdfInlineUIContainersExportMode.Image,

ImagesCompressionMode = PdfImagesCompressionMode.Automatic,

ImagesDeflaterCompressionLevel = 9,

InlineUIContainersExportMode = PdfInlineUIContainersExportMode.Image,

};

pdfProvider.ExportSettings = pdfExportSettings;

byte[] letterBytes;

radRichTextEditor1.Document.MailMergeDataSource.MoveToFirst();

int i = 0;

do

{

using (var document = radRichTextEditor1.Document.MailMergeCurrentRecord())

{

letterBytes = pdfProvider.Export(document);

File.WriteAllBytes($"{i}-{DateTime.Now.Ticks}.pdf", letterBytes);

}

letterBytes = null;

progress.Report($"Merged {i + 1} out of {dataSource.Count()}");

i++;

} while (radRichTextEditor1.Document.MailMergeDataSource.MoveToNext());

progress.Report($"Starting large PDF creation");

using (var document = radRichTextEditor1.MailMerge(true))

{

letterBytes = pdfProvider.Export(document);

File.WriteAllBytes($"ALL RECORDS-{DateTime.Now.Ticks}.pdf", letterBytes);

}

progress.Report($"Done with large PDF creation");

letterBytes = null;

pdfProvider = null;

pdfExportSettings = null;

GC.Collect();

return true;

});

}

internal class DummyItem

{

public string ContactName;

public string CompanyName;

public string Address;

public static DummyItem GetRandom()

{

return new DummyItem()

{

ContactName = RandomStringGenerator.RandomString(20, 40),

CompanyName = RandomStringGenerator.RandomString(20, 40),

Address = RandomStringGenerator.RandomString(100, 200)

};

}

internal static class RandomStringGenerator

{

private const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 ";

private static Random random = new Random();

public static string RandomString(int minLength, int maxLength)

{

var length = random.Next(minLength, maxLength);

return new string(Enumerable.Repeat(chars, length)

.Select(s => s[random.Next(s.Length)]).ToArray());

}

RichTextEditor

answered on 26 Jan 2017

3 answers

118 views

SectionBreakType.Continuous

I'm working with radrichtexteditor and I'm trying to insert section breaks, the problems is that I need the next section to star on the same page, I don't have this option, as I only have NextPage,EvenPage and OddPage. Please let me know if there's a way to accomplish this.

My versions
UI for WinForms is 2015.2.728
radrichtexteditor is v4.0.30319

Thank you.

RichTextEditor

answered on 26 Jan 2017

8 answers

287 views

Issue with DragDropService and TreeView

I am using a RadTreeView and the DragDropService to Drag/Drop of nodes into the same tree at different levels. The data on the Tree is bound to an object. Everything is working except, I can't get the tree on my form to show when the dragdrop has completed so I can update the underline table when changes are made. None of the events are firing, DragDrop, DragEnded, etc. What am I missing.

If this has already been discussed, can someone just point me to the thread. I search, but didn't see this anywhere.

TIA.

Treeview

answered on 25 Jan 2017

0 answers

146 views

Back color for RadDock

Hi,

I am creating RadDock at runtime and adding tool windows to it. But, I am not able to set backcolor for remaining space.

Please refer attached image & suggest a workaround.

Thanks,

Harshal.

Dock

asked on 25 Jan 2017

4 answers

202 views

Data binding with more than one source.

Hello!

I have a database with two separate tables for different kinds of appointments; one for calls and tasks, and another for actual meetings.

I want these all to be shown in the same RadScheduler, but as far as I can tell, it only takes one data source with one set of AppointmentMappingInfo (the two tables have some column names that differ). How can I bind data from both tables into the same RadScheduler?

Thank you!

Scheduler and Reminder

answered on 24 Jan 2017

2 answers

269 views

[Solved] Disable Arrow Keys for RadPageView?

I don't know if I missed a property or if I'll need to use the KeyDown/KeyPress events, but is there an easy or preferred way that I can turn off the feature that allows the right and left arrow keys to navigate through the pages of a RadPageView?

I have an application where I have the tab strip hidden and am programmatically controlling the page navigation.

Thanks.

PageView

answered on 24 Jan 2017

1 answer

184 views

track GridView column reorder sequence

Column reorder is enable in RadGridView. want to track the column order.

say I have three column Id, and . order is 1 2 and3. so my DB will have values like 1,2,3.
If I swap and name, require as 1,3,2.

Please Suggest.

GridView