cref 特性（C# 编程指南）

XML 文档标记中的 cref 特性表示“代码引用”。它指定标记的内部文本是代码元素，如类型、方法或属性。 诸如 Sandcastle 这样的文档工具使用 cref 特性，自动生成指向所记录类型或成员的页面的超链接。

示例

以下示例显示用在 <see> 标记中的 cref 属性。

// Save this file as CRefTest.cs
// Compile with: csc CRefTest.cs /doc:Results.xml 

namespace TestNamespace
{
    /// <summary>
    /// TestClass contains several cref examples.
    /// </summary>
    public class TestClass
    {
        /// <summary>
        /// This sample shows how to specify the <see cref="TestClass"/> constructor as a cref attribute.�
        /// </summary>
        public TestClass()
        { }

        /// <summary>
        /// This sample shows how to specify the <see cref="TestClass(int)"/> constructor as a cref attribute.�
        /// </summary>
        public TestClass(int value)
        { }

        /// <summary>
        /// The GetZero method.
        /// </summary>
        /// <example> 
        /// This sample shows how to call the <see cref="GetZero"/> method.
        /// <code>
        /// class TestClass 
        /// {
        ///     static int Main() 
        ///     {
        ///         return GetZero();
        ///     }
        /// }
        /// </code>
        /// </example>
        public static int GetZero()
        {
            return 0;
        }

        /// <summary>
        /// The GetGenericValue method.
        /// </summary>
        /// <remarks> 
        /// This sample shows how to specify the <see cref="GetGenericValue"/> method as a cref attribute.
        /// </remarks>

        public static T GetGenericValue<T>(T para)
        {
            return para;
        }
    }

    /// <summary>
    /// GenericClass.
    /// </summary>
    /// <remarks> 
    /// This example shows how to specify the <see cref="GenericClass{T}"/> type as a cref attribute.
    /// </remarks>
    class GenericClass<T>
    {
        // Fields and members.
    }

    class Program
    {
        static int Main()
        {
            return TestClass.GetZero();
        }
    }
}

程序编译时，产生以下 XML 文件。 例如，请注意，GetZero 的 cref 特性已由编译器转换为 "M:TestNamespace.TestClass.GetZero"。 “M:”前缀表示“方法”，这是 Sandcastle 等文档工具可识别的约定。 有关前缀的完整列表，请参见处理 XML 文件（C# 编程指南）。

<?xml version="1.0"?>
<doc>
    <assembly>
        <name>CRefTest</name>
    </assembly>
    <members>
        <member name="T:TestNamespace.TestClass">
            <summary>
            TestClass contains cref examples.
            </summary>
        </member>
        <member name="M:TestNamespace.TestClass.#ctor">
            <summary>
            This sample shows how to specify the <see cref="T:TestNamespace.TestClass"/> constructor as a cref attribute. 
            </summary>
        </member>
        <member name="M:TestNamespace.TestClass.#ctor(System.Int32)">
            <summary>
            This sample shows how to specify the <see cref="M:TestNamespace.TestClass.#ctor(System.Int32)"/> constructor as a cref attribute. 
            </summary>
        </member>
        <member name="M:TestNamespace.TestClass.GetZero">
            <summary>
            The GetZero method.
            </summary>
            <example> 
            This sample shows how to call the <see cref="M:TestNamespace.TestClass.GetZero"/> method.
            <code>
            class TestClass 
            {
                static int Main() 
                {
                    return GetZero();
                }
            }
            </code>
            </example>
        </member>
        <member name="M:TestNamespace.TestClass.GetGenericValue``1(``0)">
            <summary>
            The GetGenericValue method.
            </summary>
            <remarks> 
            This sample shows how to specify the <see cref="M:TestNamespace.TestClass.GetGenericValue``1(``0)"/> method as a cref attribute.
            </remarks>
        </member>
        <member name="T:TestNamespace.GenericClass`1">
            <summary>
            GenericClass.
            </summary>
            <remarks> 
            This example shows how to specify the <see cref="T:TestNamespace.GenericClass`1"/> type as a cref attribute.
            </remarks>
        </member>
    </members>    <members>
        <member name="T:TestNamespace.TestClass">
            <summary>
            TestClass contains two cref examples.
            </summary>
        </member>
        <member name="M:TestNamespace.TestClass.GetZero">
            <summary>
            The GetZero method.
            </summary>
            <example> This sample shows how to call the <see cref="M:TestNamespace.TestClass.GetZero"/> method.
            <code>
            class TestClass 
            {
                static int Main() 
                {
                    return GetZero();
                }
            }
            </code>
            </example>
        </member>
        <member name="M:TestNamespace.TestClass.GetGenericValue``1(``0)">
            <summary>
            The GetGenericValue method.
            </summary>
            <remarks> 
            This sample shows how to specify the <see cref="M:TestNamespace.TestClass.GetGenericValue``1(``0)"/> method as a cref attribute.
            </remarks>
        </member>
        <member name="T:TestNamespace.GenericClass`1">
            <summary>
            GenericClass.
            </summary>
            <remarks> 
            This example shows how to specify the <see cref="T:TestNamespace.GenericClass`1"/> type as a cref attribute.
            </remarks>
        </member>
    </members>
</doc>

请参见

参考

XML 文档注释（C# 编程指南）

建议的文档注释标记（C# 编程指南）