在做作业的时候遇到了一些问题。

Question

sing System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
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)
    {
                Page.Title = "自我介绍";
        Random rnd = new Random();
        int x = rnd.Next(1, 5);
        switch (x)
        {
            case 1:
                Image1.ImageUrl = "~/image0/image0-1.jpg";
                break;
            case 2:
                Image1.ImageUrl = "~/image0/image0-2.jpg";
                break;
            case 3:
                Image1.ImageUrl = "~/image0/image0-3.jpg";
                break;
            case 4:
                Image1.ImageUrl = "~/image0/image0-4.jpg";
                break;            case 5:
                Image1.ImageUrl = "~/image0/image0-5.jpg";
                break;        }
    }
       
    protected viod btnimage_Click(object sender, EventArgs e);
    {    }
}错误 1 类、结构或接口成员声明中的标记“{”无效
错误 2 应输入类型、命名空间定义或文件尾
请你们帮我改一下吧。  谢谢。

Answer 1

protected viod btnimage_Click(object sender, EventArgs e);
  {  }to
protected void btnimage_Click(object sender, EventArgs e)
  {  }

Answer 2

  protected viod btnimage_Click(object sender, EventArgs e);
去掉最后的;号

Answer 3

  protected viod btnimage_Click(object sender, EventArgs e);
  {  }这个 怎么会有 ； 分号呢？  去掉 还有1楼 switch  不是必须有 default的把

Answer 4

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Page.Title = "自我介绍";
        Random rnd = new Random();
        int x = rnd.Next(1, 5);
        switch (x)
        {
            case 1:
                Image1.ImageUrl = "~/image0/image0-1.jpg";
                break;
            case 2:
                Image1.ImageUrl = "~/image0/image0-2.jpg";
                break;
            case 3:
                Image1.ImageUrl = "~/image0/image0-3.jpg";
                break;
            case 4:
                Image1.ImageUrl = "~/image0/image0-4.jpg";
                break;            case 5:
                Image1.ImageUrl = "~/image0/image0-5.jpg";
                break;        }
    }    protected void btnimage_Click(object sender, EventArgs e)
    {    }
}

Answer 5

关键是这句
protected viod btnimage_Click(object sender, EventArgs e);
==
protected void  btnimage_Click(object sender, EventArgs e) //没有;号

Answer 6

还有，你的程序写成这样就可以了public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Page.Title = "自我介绍";
        Random rnd = new Random();
        int x = rnd.Next(1, 5);
        Image1.ImageUrl = string.Format("~/image0/image0-{0}.jpg", x);
    }    protected void btnimage_Click(object sender, EventArgs e)
    {    }
}

Answer 7

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
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)
    {
        Page.Title = "自我介绍";
        Random rnd = new Random();
        int x = rnd.Next(1, 5);
        switch (x)
        {
            case 1:
                //Image1.ImageUrl = "~/image0/image0-1.jpg";
                Response .Write(1);
                break;
            case 2:
               // Image1.ImageUrl = "~/image0/image0-2.jpg";
                Response .Write(1);
                break;
            case 3:
               Response .Write(1);
                break;
            case 4:
               Response .Write(1);
                break;            case 5:
                Response .Write(1);
                break;
            default: break;        }
    }    //protected viod btnimage_Click(object sender, EventArgs e);
    //{    //}
}缺少一个default: break;