Razor 组件 - 级联参数值

Question

在 c# 中创建 razor 组件时，如何将父 RenderingFragment 的引用传递给子组件/内容（不使用 .razor） ComponentBase 重载受保护的覆盖 void BuildRenderTree(RenderTreeBuilder builder) 似乎无法按预期工作。

Answer 1

I had the same question when i wanted to cascade a component to its child components. Solved it as shown below:

builder.OpenComponent<CascadingValue<TValue>>(0);
builder.AddAttribute(1, "Value", this);
builder.AddAttribute(2, "ChildContent", (builder2) =>
{
    builder2.AddContent(3, ChildContent);
});
builder.CloseComponent();

Good luck!