Secure pattern to surface. When you transfer painting patterns you want to make sure you keep the pattern lined up. Using painters tape secure the pattern to the surface. Create a hinge point along one side so you can lift the pattern and lay it back down in the same location. You will want to check your work from time to time.

• Patterns Cannot Contain Anything Painted With A Pattern
• How To Make Paint Patterns
• How To Make A Pattern In Art
• Can I Wear Pattern On Pattern

Patterns Cannot Contain Anything Painted With A Pattern

How to Identify Dishware Patterns. Family heirlooms often include a set of dishware or china passed down through the generations. And as these get older and more people handle them, some items in. Many patterns contain multiple sizes printed on one pattern tissue or PDF and have different dashed lines to indicate the size selection. It’s a good idea to go over the lines you want to use with a pen — I find colored pencils great for this task as they are soft, mark on the paper or tissue easily and don’t run through the paper as marking pens do. The easiest way to pattern a wall with the least commitment is by using peel-and-stick wall decals like these found at Home Depot.This is a great option for children's rooms that might change style frequently, or for quotes and hand script that's perfectly legible, even if yours isn't.

The options pattern uses classes to provide strongly-typed access to groups of related settings. When configuration settings are isolated by scenario into separate classes, the app adheres to two important software engineering principles:

• The Interface Segregation Principle (ISP) or Encapsulation: Scenarios (classes) that depend on configuration settings depend only on the configuration settings that they use.
• Separation of Concerns: Settings for different parts of the app aren't dependent or coupled to one another.

Options also provide a mechanism to validate configuration data. For more information, see the Options validation section.

Bind hierarchical configuration

The preferred way to read related configuration values is using the options pattern. The options pattern is possible through the IOptions<TOptions> interface, where the generic type parameter TOptions is constrained to class. The IOptions<TOptions> can later be provided through dependency injection. For more information, see Dependency injection in .NET.

For example, to read the following configuration values:

Create the following TransientFaultHandlingOptions class:

When using the options pattern, an options class:

• Must be non-abstract with a public parameterless constructor
• Contain public read-write properties to bind (fields are not bound)

The following code:

• Calls ConfigurationBinder.Bind to bind the TransientFaultHandlingOptions class to the 'TransientFaultHandlingOptions' section.
• Displays the configuration data.

In the preceding code, changes to the JSON configuration file after the app has started are read.

ConfigurationBinder.Get<T> binds and returns the specified type. ConfigurationBinder.Get<T> may be more convenient than using ConfigurationBinder.Bind. The following code shows how to use ConfigurationBinder.Get<T> with the TransientFaultHandlingOptions class:

In the preceding code, changes to the JSON configuration file after the app has started are read.

Important

The ConfigurationBinder class exposes several APIs, such as .Bind(object instance) and .Get<T>() that are not constrained to class. When using any of the Options interfaces, you must adhere to aforementioned options class constraints.

How To Make Paint Patterns

An alternative approach when using the options pattern is to bind the 'TransientFaultHandlingOptions' section and add it to the dependency injection service container. In the following code, TransientFaultHandlingOptions is added to the service container with Configure and bound to configuration:

Tip

The key parameter is the name of the configuration section to search for. It does not have to match the name of the type that represents it. For example, you could have a section named 'FaultHandling' and it could be represented by the TransientFaultHandlingOptions class. In this instance, you'd pass 'FaultHandling' to the GetSection function instead. The nameof operator is used as a convenience when the named section matches the type it corresponds to.

Using the preceding code, the following code reads the position options:

In the preceding code, changes to the JSON configuration file after the app has started are not read. To read changes after the app has started, use IOptionsSnapshot.

Options interfaces

IOptions<TOptions>:

• Does not support:
  • Reading of configuration data after the app has started.
• Is registered as a Singleton and can be injected into any service lifetime.

IOptionsSnapshot<TOptions>:

• Is useful in scenarios where options should be recomputed on every injection resolution, in scoped or transient lifetimes. For more information, see Use IOptionsSnapshot to read updated data.
• Is registered as Scoped and therefore cannot be injected into a Singleton service.
• Supports named options

IOptionsMonitor<TOptions>:

• Is used to retrieve options and manage options notifications for TOptions instances.
• Is registered as a Singleton and can be injected into any service lifetime.
• Supports:
  • Change notifications
  • Selective options invalidation (IOptionsMonitorCache<TOptions>)

IOptionsFactory<TOptions> is responsible for creating new options instances. It has a single Create method. The default implementation takes all registered IConfigureOptions<TOptions> and IPostConfigureOptions<TOptions> and runs all the configurations first, followed by the post-configuration. It distinguishes between IConfigureNamedOptions<TOptions> and IConfigureOptions<TOptions> and only calls the appropriate interface.

IOptionsMonitorCache<TOptions> is used by IOptionsMonitor<TOptions> to cache TOptions instances. The IOptionsMonitorCache<TOptions> invalidates options instances in the monitor so that the value is recomputed (TryRemove). Values can be manually introduced with TryAdd. The Clear method is used when all named instances should be recreated on demand.

Options interfaces benefits

Using a generic wrapper type gives you the ability to decouple the lifetime of the option from the DI container. The IOptions<TOptions>.Value interface provides a layer of abstraction, including generic constraints, on your options type. This provides the following benefits:

• The evaluation of the T configuration instance is deferred to the accessing of IOptions<TOptions>.Value, rather than when it is injected. This is important because you can consume the T option from various places and choose the lifetime semantics without changing anything about T.
• When registering options of type T, you do not need to explicitly register the T type. This is a convenience when you're authoring a library with simple defaults, and you don't want to force the caller to register options into the DI container with a specific lifetime.
• From the perspective of the API, it allows for constraints on the type T (in this case, T is constrained to a reference type).

Use IOptionsSnapshot to read updated data

When you use IOptionsSnapshot<TOptions>, options are computed once per request when accessed and are cached for the lifetime of the request. Changes to the configuration are read after the app starts when using configuration providers that support reading updated configuration values.

The difference between IOptionsMonitor and IOptionsSnapshot is that:

• IOptionsMonitor is a singleton service that retrieves current option values at any time, which is especially useful in singleton dependencies.
• IOptionsSnapshot is a scoped service and provides a snapshot of the options at the time the IOptionsSnapshot<T> object is constructed. Options snapshots are designed for use with transient and scoped dependencies.

The following code uses IOptionsSnapshot<TOptions>.

The following code registers a configuration instance which TransientFaultHandlingOptions binds against:

In the preceding code, changes to the JSON configuration file after the app has started are read.

IOptionsMonitor

The following code registers a configuration instance which TransientFaultHandlingOptions binds against.

The following example uses IOptionsMonitor<TOptions>:

In the preceding code, changes to the JSON configuration file after the app has started are read.

Tip

Some file systems, such as Docker containers and network shares, may not reliably send change notifications. When using the IOptionsMonitor<TOptions> interface in these environments, set the DOTNET_USE_POLLING_FILE_WATCHER environment variable to 1 or true to poll the file system for changes. The interval at which changes are polled is every four seconds and is not configurable.

For more information on Docker containers, see Containerize a .NET app.

Named options support using IConfigureNamedOptions

How To Make A Pattern In Art

Named options:

• Are useful when multiple configuration sections bind to the same properties.
• Are case-sensitive.

Consider the following appsettings.json file:

Rather than creating two classes to bind Features:Personalize and Features:WeatherStation,the following class is used for each section:

The following code configures the named options:

The following code displays the named options:

All options are named instances. IConfigureOptions<TOptions> instances are treated as targeting the Options.DefaultName instance, which is string.Empty. IConfigureNamedOptions<TOptions> also implements IConfigureOptions<TOptions>. The default implementation of the IOptionsFactory<TOptions> has logic to use each appropriately. The null named option is used to target all of the named instances instead of a specific named instance. ConfigureAll and PostConfigureAll use this convention.

OptionsBuilder API

OptionsBuilder<TOptions> is used to configure TOptions instances. OptionsBuilder streamlines creating named options as it's only a single parameter to the initial AddOptions<TOptions>(string optionsName) call instead of appearing in all of the subsequent calls. Options validation and the ConfigureOptions overloads that accept service dependencies are only available via OptionsBuilder.

OptionsBuilder is used in the Options validation section.

Use DI services to configure options

Services can be accessed from dependency injection while configuring options in two ways:

• Pass a configuration delegate to Configure on OptionsBuilder<TOptions>. OptionsBuilder<TOptions> provides overloads of Configure that allow use of up to five services to configure options:

• Create a type that implements IConfigureOptions<TOptions> or IConfigureNamedOptions<TOptions> and register the type as a service.

We recommend passing a configuration delegate to Configure, since creating a service is more complex. Creating a type is equivalent to what the framework does when calling Configure. Calling Configure registers a transient generic IConfigureNamedOptions<TOptions>, which has a constructor that accepts the generic service types specified.

Options validation

Options validation enables option values to be validated.

Consider the following appsettings.json file:

The following class binds to the 'Settings' configuration section and applies a couple of DataAnnotations rules:

The following code:

• Calls AddOptions to get an OptionsBuilder<TOptions> that binds to the SettingsOptions class.
• Calls ValidateDataAnnotations to enable validation using DataAnnotations.

The ValidateDataAnnotations extension method is defined in the Microsoft.Extensions.Options.DataAnnotations NuGet package.

The following code displays the configuration values or the validation errors:

The following code applies a more complex validation rule using a delegate:

IValidateOptions for complex validation

The following class implements IValidateOptions<TOptions>:

IValidateOptions enables moving the validation code into a class.

Using the preceding code, validation is enabled in ConfigureServices with the following code:

Options post-configuration

Set post-configuration with IPostConfigureOptions<TOptions>. Post-configuration runs after all IConfigureOptions<TOptions> configuration occurs, and can be useful in scenarios when you need to override configuration:

PostConfigure is available to post-configure named options:

Use PostConfigureAll to post-configure all configuration instances:

See also

How to transfer painting patterns easily. You will learn a simple method to trace a pattern to your painting surface. Some call these traceables.

It is so easy to transfer painting patterns and so helpful. When you are just starting to paint it is comforting to have a traceable pattern to work from. Especially if you can’t draw well, like me. Having a pattern can give you the confidence that your design will be in scale and let you focus on applying paint.

Disclosure: This post may contain affiliate links, meaning I get a commission if you decide to make a purchase through my links, at no cost to you. Please read my disclosure for more info.

Secure pattern to surface

When you transfer painting patterns you want to make sure you keep the pattern lined up. Using painters tape secure the pattern to the surface. Create a hinge point along one side so you can lift the pattern and lay it back down in the same location. You will want to check your work from time to time.

Next, lay your graphite paper on surface beneath the pattern. I have a smaller piece here but you can use what size you have.

Note: There is a method where you color the back of the pattern with a pencil or piece of chalk instead of using the graphite paper. To me that is too time consuming and the chalk leaves a huge mess. This is faster, simpler and cost effective. Graphite paper is inexpensive and easy to acquire.

Transfer painting design

After you have it all laid out, use your pen or stylus to draw over top the main lines you wish to transfer. If you have newer graphite paper you will want to use a light touch. If you graphite paper is well used like the one I am using you will need to press firmer.

Check your lines

Before you go very far be sure to check your work by lifting the pattern and graphite.. See if your lines are transferring to your satisfaction. On a light surface like what I am working on here you want faint lines.

Oranges, yellows and many reds are not opaque and dark transfer lines with show through the paint.

I am pointing to my lines in the photo. You can barely make them out but I can see them well enough in person.

Lighten lines if needed

Can I Wear Pattern On Pattern

If you get some lines darker than intended you can erase them. The one eraser I have found that gets graphite off the best is Magic Rub Eraser. I am not referring to the Mr. Clean Magic Eraser. The actual eraser I am speaking of is linked below in the supply list so you can see one.

You are ready to paint

Now grab your brushes and paint. You are ready to get started on your new art work!