Develop Reference

How to extract the UI element from data template?

I used the following code to create data template items:
FrameworkElementFactory textCtrl = new FrameworkElementFactory(typeof(TextBox));
Binding binding1 = new Binding();
string path = "Syncfusion";
binding1.Path = new PropertyPath(path);
textCtrl.SetValue(TextBox.TextProperty,binding1);
Binding binding2 = new Binding();
string path2 = "Text1";
binding2.Path = new PropertyPath(path2);
textCtrl.SetValue(TextBox.NameProperty, binding2);
DataTemplate dt = new DataTemplate();
dt.VisualTree = textCtrl;
How to get the text box from the data template..?
I tried the following links
Link 1
Link 2
But I did not get the things correctly...
I used the below code in xaml
<DataTemplate>
<TextBlock Text="{Binding CellBoundValue}" gridcommon:VisualContainer.WantsMouseInput="False"/>
</DataTemplate>
Can anyone help me on this?

As far as I know, Microsoft does not recommend to use the FrameworkElementFactory, it may get deprecated some times (not sure about this).
But if you want to do it anyway, you must apply your DataTemplate to create instances of controls declared in the DataTemplate. You can do this for example with a ContentControl or an ItemsControl.

ToolTip for asp.net page. Have to display 3 tables as tooltip

And is it possible to add a ballon tool tip like the one in windows in asp.net website. I want to display 3 tables as tooltip which when I give it in a text box doesn't align and I would Like to have some ideas and suggestions about how to implement it.
add text to menu.

Menu mainmenu = new Menu();
MenuItem NavigationMenu = new MenuItem();
NavigationMenu.Text = "This is a text";
NavigationMenu.NavigateUrl = "../somepage.aspx";
mainmenu.Items.Add(NavigationMenu);

NavigationMenu.Items.Add(new MenuItem
{
Text= "This is my text",
ToolTip= "This is my tooltip"
});

How can I create a hyperlink in C# code instead of XAML

How can I create a hyper link in C# code that looks like the following in XAML?:
<TextBlock>
<Hyperlink Click="HyperLinkClick">New Hyperlink</Hyperlink>
</TextBlock>

MSDN usually has very good examples. Combining the examples for TextBlock and Hyperlink:
TextBlock textBlock1 = new TextBlock();
Run run3 = new Run("Link Text.");
Hyperlink hyperl = new Hyperlink(run3);
hyperl.NavigateUri = new Uri("http://search.msn.com");
textBlock1.Inlines.Add(hyperl);

How to assign a dynamic resource style in code?

I want to produce in code the equivalent of this in XAML:
<TextBlock
Text="Title:"
Width="{Binding FormLabelColumnWidth}"
Style="{DynamicResource FormLabelStyle}"/>
I can do the text and the width, but how do I assign the dynamic resource to the style:
TextBlock tb = new TextBlock();
tb.Text = "Title:";
tb.Width = FormLabelColumnWidth;
tb.Style = ???

You should use FrameworkElement.SetResourceReference if you want true DynamicResource behaviour - ie updating of the target element when the resource changes.
tb.SetResourceReference(Control.StyleProperty, "FormLabelStyle")

You can try:
tb.Style = (Style)FindResource("FormLabelStyle");
Enjoy!

The original question was how to make it Dynamic, which means if the resource changes the control will update. The best answer above used SetResourceReference. For the Xamarin framework this is not available but SetDynamicResource is and it does exactly what the original poster was asking. Simple example
Label title = new Label();
title.Text = "Title";
title.SetDynamicResource(Label.TextColorProperty, "textColor");
title.SetDynamicResource(Label.BackgroundColorProperty, "backgroundColor");
Now calling:
App.Current.Resources["textColor"] = Color.AliceBlue;
App.Current.Resources["backgroundColor"] = Color.BlueViolet;
Causes the properties to change for all controls using the resource this way. This should work for any property.

This should work:
tb.SetValue(Control.StyleProperty, "FormLabelStyle");

Application.Current.Resources.TryGetValue("ResourceKey", out var value)

Setting WPF text to TextBlock

I know that TextBlock can present a FlowDocument, for example:
<TextBlock Name="txtFont">
<Run Foreground="Maroon" FontFamily="Courier New" FontSize="24">Courier New 24</Run>
</TextBlock>
I would like to know how to set a FlowDocument that is stored in a variable to a TextBlock.
I am looking for something like:
string text = "<Run Foreground="Maroon" FontFamily="Courier New" FontSize="24">Courier New 24</Run>"
txtFont.Text = text;
However, The result of the code above is that the XAML text is presented unparsed.
EDIT: I guess my question was not clear enough. What I'm really trying to achive is:
The user input some text into a RichTextBox.
The application saves the user input as FlowDocument from the RichTextBox, and serializes it to the disk.
The FlowDocument is deserialized from the disk to the variable text.
Now, I would like to be able to present the user text in a TextBlock.
Therefore, as far as I understand, creating a new Run object and setting the parameters manually will not solve my problem.
The problem is that serializing RichTextBox creates Section object, which I cannot add to TextBlock.Inlines. Therefore, it is not possible to set the deserialized object to TextProperty of TextBlock.

create and add the object as below:
Run run = new Run("Courier New 24");
run.Foreground = new SolidColorBrush(Colors.Maroon);
run.FontFamily = new FontFamily("Courier New");
run.FontSize = 24;
txtFont.Inlines.Add(run);

I know that TextBlock can present FlowDocument
What makes you think that ? I don't think it's true... The content of a TextBlock is the Inlines property, which is an InlineCollection. So it can only contain Inlines... But in a FlowDocument, the content is the Blocks property, which contains instances of Block. And a Block is not an Inline

If your FlowDocument has been deserialized, it means that you have an object of type FlowDocument, right? Try setting the Text property of your TextBlock to this value. Of course, you cannot do this with txtFont.Text = ..., since this only works for strings. For other types of objects, you need to set the DependencyProperty directly:
txtFont.SetValue(TextBlock.TextProperty, myFlowDocument)

Here is how we are setting the look of a textblock by assigning a style on-the-fly.
// Set Weight (Property setting is a string like "Bold")
FontWeight thisWeight = (FontWeight)new FontWeightConverter().ConvertFromString(Properties.Settings.Default.DealerMessageFontWeightValue);
// Set Color (Property setting is a string like "Red" or "Black")
SolidColorBrush thisColor = (SolidColorBrush)new BrushConverter().ConvertFromString(Properties.Settings.Default.DealerMessageFontColorValue);
// Set the style for the dealer message
// Font Family Property setting is a string like "Arial"
// Font Size Property setting is an int like 12, a double would also work
Style newStyle = new Style
{
TargetType = typeof(TextBlock),
Setters = {
new Setter
{
Property = Control.FontFamilyProperty,
Value = new FontFamily(Properties.Settings.Default.DealerMessageFontValue)
},
new Setter
{
Property = Control.FontSizeProperty,
Value = Properties.Settings.Default.DealerMessageFontSizeValue
},
new Setter
{
Property = Control.FontWeightProperty,
Value = thisWeight
},
new Setter
{
Property = Control.ForegroundProperty,
Value = thisColor
}
}
};
textBlock_DealerMessage.Style = newStyle;
You can eliminate the style section and set properties directly, but we like keeping things bundled in the style to help us organize the look throughout the project.
textBlock_DealerMessage.FontWeight = thisWeight;
HTH.