C# : WPF: The name does not exist in the namespace

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Error CS0234: The type or namespace name Forms does not exist in the namespace System.Windows

C# - How to fix - The name 'GetCultureInfo' does not exist in the current context

How to fix error - The name 'Title' does not exist in the current context

C# : WPF designer issues : XDG0008 The name "NumericTextBoxConvertor" does not exist in the namespac

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C# - How to fix error - The name 'NumberStyles' does not exist in the current context

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C# : The name "XYZ" does not exist in the namespace "clr-namespace:ABC"

MVC - Fix Error - The type or namespace name 'DataVisualization' does not exist in the namespace

C# : 'Migrations' does not exist in the namespace 'Microsoft.EntityFrameworkCore'

C# : 'Forms' does not exist in the namespace system.windows

C# : C# WPF Attached Properties - Error: "The property does not exist in XML namespace"

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