morsanu - Developer IT

HTML Agility Pack - ReplaceNode doesn't change the InnerHTML of the Body

- by morsanu

Hi there, I have this The body: <body>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent leo leo, ultrices eu venenatis et, rutrum fringilla dolor.</body> The code: HtmlNode body = doc.DocumentNode.SelectSingleNode("//body"); Dictionary<HtmlNode, HtmlNode> toReplace = new Dictionary<HtmlNode, HtmlNode>(); // I do some logic here adding nodes to the toReplace dictionary. foreach (HtmlNode replaceNode in toReplace.Keys) { replaceNode.ParentNod.ReplaceChild(toReplace[replaceNode], replaceNode); } After i do this, the InnerHtml of the body node remains the same as from beginning, although the OutterHtml or the InnerText are showing the good result. Is there something wrong with my code? The result: // body.InnerHtml Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent leo leo, ultrices eu venenatis et, rutrum fringilla dolor. // body.OutterHtml <body>Lorem ipsum dolor sit amet...</body>

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WPF Canvas Binding

- by morsanu

Hey guys, I'm rather new to WPF, so maybe this is a simple question. I have a class that derives from Canvas, let's call it MyCanvas. And I have a class, MyClass, that has a property of type MyCanvas. In XAML, I built a TabControl, so each TabItem binds to a MyClass object. Now, in the Content of every tab I want to display MyObject.MyCanvas. How should I do that? <TabControl.ContentTemplate> <DataTemplate> <Grid> <myCanvas:MyCanvas Focusable="true" Margin="10" > <Binding Path="Canvas"></Binding> </screenCanvas:ScreenCanvas> </Grid> </DataTemplate> </TabControl.ContentTemplate>

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WPF Separator position

- by morsanu

Hey, I'm using a Separator to draw a vertical line inside a Border. At first this was ok because the line needed to be centered, but now I need to position it at a custom x-position from the left border. Is there a way to do that? <Border x:Name="border" ClipToBounds="True" Background="White" BorderBrush="Black" BorderThickness="2"> <Separator BorderBrush="Black" BorderThickness="2"> <Separator.LayoutTransform> <RotateTransform Angle="90" /> </Separator.LayoutTransform> </Separator> </Border>

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WPF User Control - Round corners programmatically

- by morsanu

Another WPF question... <UserControl x:Class="TKEApp.Components.UserControls.ButtonControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid Background="Black"> <TextBlock Foreground="White" Background="Brown" Name="lblCaption" TextAlignment="Center"></TextBlock> </Grid> </UserControl> Somwhere in the application code I have an instance of this control and I need to make it's corners rounded programmatically. Is this possible?

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WPF RibbonTextBox Width problem

- by morsanu

Hey guys, It seems to me that the Ribbon control has a problem with textboxes. I was expecting a common TextBox control behaviour: a fixed width and a visible caret when the text exceeds the width. But the RibbonTextBox control changes its width and when the text exceeds the right limit, the overflow is not visible. I found a hack on a blog that does something like this: var img = SearchButton.Template.FindName("image", SearchButton); if (img != null && img is Image) (img as Image).Visibility = Visibility.Collapsed; var lbl = FindTemplateControl<Label>(SearchText); var border = SearchText.Template.FindName("Bd", SearchText); if (border != null && border is Border && img != null && lbl != null) { (border as Border).Width = SearchText.ActualWidth - (((Image)img).ActualWidth + lbl.ActualWidth); } but I reallly don't want to do such a workaround. Is there any other simpler way to achieve simple TextBox behaviour?

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WPF Border Thickness increase direction

- by morsanu

Hey. Another WPF question. In my XAML code I have a border: <Border x:Name="myBorder" Background="AliceBlue" Width="200" Height="200" BorderThickness="10" BorderBrush="Black"> </Border> and somewhere in code I increase the BorderThickness double thickness = myBorder.BorderThickness.Bottom + 2; myBorder.BorderThickness = new Thickness(thickness); and the result is that the border's weight increases but not outside the 200x200 width-height, but inner, decreasing the dimension. Is there a way to do the opposite?

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WPF Bind User Control Coordinates

- by morsanu

Another beginner WPF question from me :) Ok, so I have a User Control added to a Canvas. In another area of the application I have two TextBoxes that will get 2 values : X and Y. I need a two-way binding between the user control's top left corner coordinates and those 2 textboxes. I don't mind implementing a Converter or doing some calculations, but I need a push in the right direction from a more experienced WPF developer.

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WPF Validation on two properties

- by morsanu

I have a user control that contains a border somewhere in it. I am able to edit both the User Control Width and the Border Width from binding to two textboxes. I need to include validation when I create the binding in code so that the Border Width can't be higher than the User Control Width.

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WPF DependencyProperty event before content changed

- by morsanu

First I will explain the context of the problem, because you might be able to point me in a better direction. I need to implement a undo-redo like system on an object. The object has a series of dependency properties. Some are double, int, string but some are also of DependencyObject type. I need to save the value of the property before it is changed, and for this I added the CoerceValueCallback. public static readonly DependencyProperty MyBackgroundProperty = DependencyProperty.Register("MyBackground", typeof(MyCustomizableBackground), typeof(MyComponent), new UIPropertyMetadata(default(MyCustomizableBackground), null, new CoerceValueCallback(OnPropertyChanged))); In OnPropertyChanged I save the value before it's changed. MyCustomizableBackground is the DependencyObject that has also some dependency properties. The problem is that in this case, where I have a custom object as a property, the OnPropertyChanged method isn't triggered, but when I have a common type, it is triggered.

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WPF custom DependencyProperty notify changes

- by morsanu

Hey guys I have a class called MyComponent and it has a DependencyProperty caled BackgroundProperty. public class MyComponent { public MyBackground Background { get { return (MyBackground)GetValue(BackgroundProperty); } set { SetValue(BackgroundProperty, value); } } public static readonly DependencyProperty BackgroundProperty = DependencyProperty.Register("Background", typeof(MyBackground), typeof(MyComponent), new FrameworkPropertyMetadata(default(MyBackground), new PropertyChangedCallback(OnPropertyChanged))); } MyBackground is a class that derives from DependencyObject and it has some DependencyProperties. public class MyBackground : DependencyObject { public Color BaseColor { set { SetValue(BaseColorProperty, value); } get { return (Color)GetValue(BaseColorProperty); } } public static readonly DependencyProperty BaseColorProperty = DependencyProperty.Register("BaseColor", typeof(Color), typeof(MyBackground ), new UIPropertyMetadata(Colors.White)); [...] } Now, what I want is when a property from MyBackground is changed, MyComponent to be notified that MyBackground has changed and the PropertyChangedCallback named OnPropertyChanged to be called.

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Gridview item template refresh

- by morsanu

<asp:TemplateField HeaderText="Quantity" ItemStyle-HorizontalAlign="Left" HeaderStyle-HorizontalAlign="Left"> <ItemTemplate> <%#GetQuantityRemaining((int) Eval("Id")) %> </ItemTemplate> <HeaderStyle HorizontalAlign="Left"></HeaderStyle> <ItemStyle HorizontalAlign="Left"></ItemStyle> </asp:TemplateField> Every time the user clicks on some buttons or modifies some fields, I need to update this field, calling the GetQuantityRemaining method again. Is there a way to do that?

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