非静态字段，方法或属性'_Default.Label1'需要对象引用？ [英] An object reference is required for the non-static field, method, or property '_Default.Label1'?

问题描述

大家好。

我是c＃中的新手，我来自php ..

我收到此错误：非静态字段需要对象引用，方法或属性'_Default.Label1'
当我尝试运行时：

Hi All.

Im a newbee in c#, i come from php..
 
I get this error: An object reference is required for the non-static field, method, or property '_Default.Label1'
When i try to run this:

using System;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.Services;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;



public partial class _Default : System.Web.UI.Page 

{

    protected void Page_Load(object sender, EventArgs e)

    {

        Label1.Text = DateTime.Now.ToString();

    }

    

   [WebMethod]

   public static void SendForm(int name)

   {

       

       name = name * 100;

       name.ToString();

       Label1.Text = name;

      



        /*

        if (string.IsNullOrEmpty(email))

       {

           throw new Exception("You must supply an email address.");

       }



       if (string.IsNullOrEmpty(message))

       {

           throw new Exception("Please provide a message to send.");

       }

    */

       // If we get this far we know that they entered enough data, so

       // here is where you would send the email or whatever you wanted

       // to do :)

   }



}

推荐答案

这是因为SendForm（）被定义为静态方法。这意味着它无法访问任何每个实例的数据。

如果删除"静态"一词。从它的声明，它将工作。

It's because SendForm() is defined as a static method. That means that it does not have access to any per-instance data.

If you remove the word "static" from its declaration, it'll work.

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