ASP.NET Web API中對Headers的操作。

1、獲取請求頭資訊

string value = HttpContext.Current.Request.Headers["name"];

2、新增響應頭資訊

HttpResponseMessage result = new HttpResponseMessage();
result.Headers.Add("name", "value");

示例：ASP.NET Web API專案方法中獲取請求頭資訊，並在返回結果中新增響應頭資訊。

/// <summary>
/// Headers操作示例
/// </summary>
public HttpResponseMessage OperHeaders()
{
    //獲取請求頭資訊
    string info = HttpContext.Current.Request.Headers["My-Headers-Info"];

    //返回響應結果
    HttpResponseMessage result = new HttpResponseMessage();
    result.Content = new StringContent("請求頭資訊為：" + info);

    //新增響應頭資訊
    result.Headers.Add("Access-Control-Expose-Headers", "My-Headers-Info");
    result.Headers.Add("My-Headers-Info", "ABC123");

    return result;
}