Questions on UI for WPF Forum

1 answer

339 views

Warning, Resource not found FluentResourceKey. Other program conflicts

Hello.

I've written a similar post before.

At that time, there was not much warning output, so I didn't care.
But if I get a lot of Resource not found output, I've seen the design load slowly.

Also, the warning didn't come up when I made a general sample project.
When I use it as a module in another program, it happens.

I used [Row Number] of GridView for Telerik Demo.
I used an implicit style and found this in CellStyle.

The GirdViewCell implicit style is as follows, and all warnings are printed for the ResourceKey of telerik1.

    <Style x:Key="GridViewCellStyle" TargetType="grid:GridViewCell">
        <Setter Property="Template" Value="{StaticResource GridViewCellTemplate}"/>
        <Setter Property="FontSize" Value="{telerik1:FluentResource ResourceKey=FontSize}"/>
        <Setter Property="FontFamily" Value="{telerik1:FluentResource ResourceKey=FontFamily}"/>
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="BorderBrush" Value="{telerik1:FluentResource ResourceKey=BasicSolidBrush}"/>
        <Setter Property="SelectedBackground" Value="{telerik1:FluentResource ResourceKey=PressedBrush}"/>
        <Setter Property="CurrentBorderBrush" Value="{telerik1:FluentResource ResourceKey=IconBrush}"/>
        <Setter Property="MouseOverBackground" Value="{telerik1:FluentResource ResourceKey=MouseOverBrush}"/>
        <Setter Property="Padding" Value="5 0"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisualStyle}"/>
    </Style>

If this is used, the above warning of the image is output.

<behaviour:GridViewRowNumber.CellStyle>
    <Style TargetType="telerik:GridViewCell" BasedOn="{StaticResource GridViewCellStyle}">
	<Setter Property="Background" Value="LightGray"/>
	<Setter Property="TextBlock.TextAlignment" Value="Center"/>
    </Style>
</behaviour:GridViewRowNumber.CellStyle>

However, if you find a property in an implicit style for this warning output and wrap it in style, it does not appear.

<behaviour:GridViewRowNumber.CellStyle>
    <Style TargetType="telerik:GridViewCell" BasedOn="{StaticResource GridViewCellStyle}">
	<Setter Property="Background" Value="LightGray"/>
	<Setter Property="TextBlock.TextAlignment" Value="Center"/>
	<Setter Property="FontSize" Value="12"/>
	<Setter Property="FontFamily" Value="Segoe UI"/>
	<Setter Property="BorderBrush" Value="Transparent"/>
	<Setter Property="SelectedBackground" Value="Transparent"/>
	<Setter Property="CurrentBorderBrush" Value="Transparent"/>
	<Setter Property="MouseOverBackground" Value="Transparent"/>
    </Style>
</behaviour:GridViewRowNumber.CellStyle>

The explanation was a bit long.

Here I want to know two things.

first. When the program crashes and opens a window, is there a way to find and apply the implicit style again?
When loading the program, all styles are read, but when the window is opened, it is assumed that the warning will not occur if read again.

second. If there is no solution, please tell me where to set ValidationBrush, PrimaryBackgroundBrush, and FocusThickness.

Thanks.

GridView

Styling

updated answer on 25 Jun 2021

3 answers

168 views

Floating RadDocumentPane has no title after deserialization

We have documents that use RadDocumentPane and we serialize them on shutdown so we can restore them when the application restarts. The problem is that floating windows don't get their titles set.

While the application is running, forms can be dragged outside and left floating, then redocked and the titles work fine. The issue occurs after startup and the forms are restored from deserialization, floating windows end up with no title. Redocking them works but the tab has no text.

From what I can see of the XAML there are no errors reported for binding to Header or Title, yet the same code works for docked windows but not for floating windows.

Docking

answered on 24 Jun 2021

1 answer

819 views

Merging cells horizontally in radgridview

WPF I am using Radgridview inside having so many group headers, how to merge a particular cell in a row by index of the column. If have any example project pls post here.

Thanks & Regards

Murugansilvers

GridView

answered on 24 Jun 2021

1 answer

683 views

RadRichTextBox - Unicode hex character code "" incorrect rendering

Hello,

I use RadRichTextBox and HtmlFormatProvider to render HTML string and faced issue, when Unicode hex character code "" is rendered like "Ȁb;"
Is it possible to fix it?

Input HTML string fragment:

<span>&#x200b;</span>

Expected: Zero Width Space.
Actual rendering:

RichTextBox

answered on 24 Jun 2021

1 answer

420 views

Exporting from docx to pdf using PdfFormatProvider utlizes a lot of memory and time as the number of pages in word document increase.

Hi

I am using Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider() to convert a word document(.docx) to pdf.

This takes a lot of time and gives system out of memory exception when the number of pages in the word document is more than 500.

Below is the code snippet:

using (Stream input = new FileStream("temp.docx"), FileMode.Open))

{
var providerDocx = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
var document = providerDocx.Import(input);

var providerPdf = new Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider();

Stream outStream = new MemoryStream();
providerPdf.Export(document, outStream);

var fileStream = File.Create("temp.pdf");
outStream.Seek(Constants.Int0, SeekOrigin.Begin);
outStream.CopyTo(fileStream);
fileStream.Close();
}

Please suggest a solution to this or any other alternative which takes less time and memory.

PDFViewer

answered on 24 Jun 2021

1 answer

264 views

WPF UI Demo installation from web not working

Downloading and running the WPF UI demo gives an error. Installer log shows:

The following properties have been set:
Property: [AdminUser] = true {boolean}
Property: [InstallMode] = HomeSite {string}
Property: [ProcessorArchitecture] = AMD64 {string}
Property: [VersionNT] = 6.2.0 {version}
Running checks for package 'Windows Installer 4.5', phase BuildList
Looking up path for special folder 'WindowsFolder'
Running check with folder 'C:\Windows\System32' and file 'msi.dll'
Attempting to find file 'C:\Windows\System32\msi.dll'
File version is '5.0.19041.928'
Setting value '5.0.19041.928 {version}' for property 'VersionMsiDll'
The following properties have been set for package 'Windows Installer 4.5':
Property: [VersionMsiDll] = 5.0.19041.928 {version}
Running checks for command 'WindowsInstaller4_5\WindowsXP-KB942288-v3-x86.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsi' and value '4.5': true
Result of checks for command 'WindowsInstaller4_5\WindowsXP-KB942288-v3-x86.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\WindowsXP-KB958655-v2-x86-ENU.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsiDll' and value '4.5.6001.22299': true
Result of checks for command 'WindowsInstaller4_5\WindowsXP-KB958655-v2-x86-ENU.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x86.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsi' and value '4.5': true
Result of checks for command 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x86.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\WindowsServer2003-KB958655-v2-x86-ENU.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsiDll' and value '4.5.6001.22299': true
Result of checks for command 'WindowsInstaller4_5\WindowsServer2003-KB958655-v2-x86-ENU.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x64.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsi' and value '4.5': true
Result of checks for command 'WindowsInstaller4_5\WindowsServer2003-KB942288-v4-x64.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\WindowsServer2003.WindowsXP-KB958655-v2-x64-ENU.exe'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsiDll' and value '4.5.6001.22299': true
Result of checks for command 'WindowsInstaller4_5\WindowsServer2003.WindowsXP-KB958655-v2-x64-ENU.exe' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\Windows6.0-KB958655-v2-x86.MSU'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsiDll' and value '4.5.6001.22308': true
Result of checks for command 'WindowsInstaller4_5\Windows6.0-KB958655-v2-x86.MSU' is 'Bypass'
Running checks for command 'WindowsInstaller4_5\Windows6.0-KB958655-v2-x64.MSU'
Result of running operator 'VersionGreaterThanOrEqualTo' on property 'VersionMsiDll' and value '4.5.6001.22308': true
Result of checks for command 'WindowsInstaller4_5\Windows6.0-KB958655-v2-x64.MSU' is 'Bypass'
'Windows Installer 4.5' RunCheck result: No Install Needed
Launching Application.
URLDownloadToCacheFile failed with HRESULT '-2146697208'
Error: An error occurred trying to download 'https://demos.telerik.com/wpf/WPF%20Demos.application'.

General Discussions

Installer and Visual Studio Extensions

answered on 24 Jun 2021

2 answers

223 views

[Solved] How to set independent IsEnable for navigation items

Hello.

It will be easier to understand if you refer to the image.
The user wants to independently enable the navigation item according to the user's selection.

My example created a structure like that, but it doesn't work.

Is there any good way?

Thanks.

p.s - In combination with the above functions, can I control A and B Views with Enable at the same time by adding a C Button(True/False)?

NavigationView (Hamburger Menu)

Styling

answered on 24 Jun 2021

1 answer

314 views

What is the DataContext of RadComboBox.MultipleSelectionBoxTemplate?

I have a data-driven application architecture and my expectation is that MultipleSelectionBoxTemplate shares the same DataContext as the parent RadComboBox because it does not apply to any particular item. This is very confusing.

ComboBox

answered on 23 Jun 2021

1 answer

183 views

Remove RadDiagramShape connector at runtime

Is it possible to remove RadDiagramShape-Connectos at runtime (I've created my own shape-class: BaseNodeShape : RadDiagramShape)?

If I'm calling Connectors.Clear(), the connectors are not removed from the shape, do I need to start/end editing or something like that?

I'm creating connectors like that, since the code is called multiple times, I also need to remove old connectors. But old connectors just stay in ths shape.

/// <summary>
        /// Creates connectors and calls LoadConnectorText method
        /// </summary>
        public virtual void CreateConnectors()
        {
            if (ViewModel?.DataPins == null || ViewModel?.FlowPins == null)
                return;

            int longestTextLength = 0;
            
            FlowConnectors?.Clear();
            DataConnectors?.Clear();
            Connectors?.Clear();
            
            // Fill connector list
            foreach (var pin in ViewModel.DataPins)
            {
                var dataConnector = new DataConnector(pin.Name, pin.DisplayName,
                    pin.PinDirection == PinDirectionDefinition.In ? ConnectorDirection.In : ConnectorDirection.Out,
                    pin.DataConnectorType, pin.IsGeneric, pin.AllowedTypes)
                {
                    DataContext = pin
                };
                
                DataConnectors.Add(dataConnector);

                if (dataConnector.Name.Length > longestTextLength)
                    longestTextLength = dataConnector.Name.Length;
            }

            foreach (var pin in ViewModel.FlowPins)
            {
                var flowConnector = new FlowConnector(pin.Name, pin.DisplayName,
                    pin.PinDirection == PinDirectionDefinition.In ? ConnectorDirection.In : ConnectorDirection.Out)
                {
                    DataContext = pin
                };

                FlowConnectors.Add(flowConnector);

                if (flowConnector.Name.Length > longestTextLength)
                    longestTextLength = flowConnector.Name.Length;
            }

            var headerWidth = 15 + (ViewModel.DisplayName.Length * 8);
            var totalLineWidth = longestTextLength * 10;

            if (headerWidth < totalLineWidth)
                ViewModel.Width = totalLineWidth;
            else
                ViewModel.Width = headerWidth;

            if (ViewModel.Width < 50)
                ViewModel.Width = 50;

            const double heightPerDataPin = 20;
            const double heightPerFlowPin = 20;
            const double baseHeight = 35;

            var flowInPinCount = FlowConnectors.Count(x => x.ConnectorDirection == ConnectorDirection.In);
            var dataInPinCount = DataConnectors.Count(x => x.ConnectorDirection == ConnectorDirection.In);
            var flowOutPinCount = FlowConnectors.Count(x => x.ConnectorDirection == ConnectorDirection.Out);
            var dataOutPinCount = DataConnectors.Count(x => x.ConnectorDirection == ConnectorDirection.Out);

            if ((flowInPinCount * heightPerFlowPin + dataInPinCount * heightPerDataPin) > (flowOutPinCount * heightPerFlowPin + dataOutPinCount * heightPerDataPin))
            {
                var flowPinsHeight = heightPerFlowPin * flowInPinCount;
                var dataPinsHeight = heightPerDataPin * dataInPinCount;
                ViewModel.Height = baseHeight + flowPinsHeight + dataPinsHeight + 5;
            }
            else
            {
                var flowPinsHeight = heightPerFlowPin * flowOutPinCount;
                var dataPinsHeight = heightPerDataPin * dataOutPinCount;
                ViewModel.Height = baseHeight + flowPinsHeight + dataPinsHeight + 5;
            }

            double heightOffset = (35 / ViewModel.Height);
            double rowMargin = (18 / ViewModel.Height);
            double xLeft = (8 / ViewModel.Width); // 0.04;
            double xRight = 1 - xLeft;
            double yTop = heightOffset;

            foreach (var flowConnector in FlowConnectors
                .Where(connector => connector.ConnectorDirection == ConnectorDirection.In))
            {
                flowConnector.Offset = new Point(xLeft, yTop);
                this.Connectors.Add(flowConnector);
                yTop += rowMargin;                
            }

            foreach (var dataConnector in DataConnectors
                .Where(connector => connector.ConnectorDirection == ConnectorDirection.In))
            {
                dataConnector.Offset = new Point(xLeft - 0.01, yTop);
                this.Connectors.Add(dataConnector);
                yTop += rowMargin;                
            }

            yTop = heightOffset;
            foreach (var flowConnector in FlowConnectors
                .Where(connector => connector.ConnectorDirection == ConnectorDirection.Out))
            {
                flowConnector.Offset = new Point(xRight, yTop);
                this.Connectors.Add(flowConnector);
                yTop += rowMargin;
            }

            foreach (var dataConnector in DataConnectors
                .Where(connector => connector.ConnectorDirection == ConnectorDirection.Out))
            {
                dataConnector.Offset = new Point(xRight, yTop);
                this.Connectors.Add(dataConnector);
                yTop += rowMargin;
            }
        }

Diagram

answered on 22 Jun 2021

1 answer

896 views

[Solved] MVVM example of using the SyntaxEditor

Hope somebody can help out here.

We have recently started using the RadSyntaxEditor in an application that uses the Prism framework. There have been some posts about the SyntaxEditor not showing in the UI unless you put it in a ContentControl. We did this and bound the Content to the SyntaxEditor instance in the VM.

This worked fine and we can add a custom tagger but none of the event subscriptions to the Document.TextContentChanged event seem to work.

If we then template the SyntaxEditor in the XAML and bind to an instance of the TextDocument like this, how do you set up a custom tagger?

<ControlTemplate x:Key="SyntaxEditorControlTemplate" TargetType="{x:Type ContentControl}">
            <telerik:RadSyntaxEditor AutoScrollToCaretOnTextChange="True"
                                      CaretDisplayMode="Block"
                                      Document="{Binding SyntaxTextDocument}">

            </telerik:RadSyntaxEditor>
</ControlTemplate>

Can anybody point us to an example of using the SyntaxEditor with MVVM please.

Thanks

SyntaxEditor

answered on 21 Jun 2021