How Can I Create Custom Compiler Warnings in Visual Studio?

Custom compiler warning

This article will introduce how to create custom properties in Visual Studio to generate compiler warnings, providing .Net ObsoleteAttribute alternatives.

Create custom attributes

First, we create a custom property named System.Attribute using the [MyAttribute] class. This attribute allows us to mark methods or properties that require attention.

Generate compiler warning

To generate compiler warnings we need to use attributes from the System namespace. In this example we will use ObsoleteAttribute. By applying [Obsolete("自定义警告消息")] to our [MyAttribute] class, we instruct the compiler to generate a warning when using this attribute.

Example usage

To demonstrate our custom properties, let us consider the following code:

<code class="language-csharp">[MyAttribute("这段代码很糟糕，应该检查一下")]
public void DoEverything()
{
}</code>

When you compile this code in Visual Studio, you will receive a compiler warning similar to:

<code>警告 CS0618: 'DoEverything' 已过时：这段代码很糟糕，应该检查一下</code>

Other notes

It is important to note that the error message you receive may vary depending on the version of Visual Studio you are using. You can customize the warning message by specifying the "error ID" in the property constructor.

Conclusion

Using custom properties to generate compiler warnings allows us to easily identify code that needs attention during refactoring. This provides an efficient way to guide developers to improve code and maintain code quality.

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