c#问题

Question

  private void button1_Click(object sender, EventArgs e)
        {
            switch(textBox1.Text)
          {
           string into;            case"李白";
            into="唐代诗人";
            break;
            case "岳飞";
            into="宋抗金英雄";
            break;
            default:
            into="查无此人";
            break;
           
        }
        
            label1.Text=into;
        }
报错提示：case表达式无效，等等
望高人指点一二。

Answer 1

        string into=string.Empty; 
switch(textBox1.Text) 
          { 
               case "李白": 
            into="唐代诗人"; 
            break; 
            case "岳飞": 
            into="宋抗金英雄"; 
            break; 
            default: 
            into="查无此人"; 
            break; 
          
        } 

Answer 2

string into; 最好放在switch外面，  case"李白"; 不是分号是冒号 后面类推

Answer 3

不能用分号要用冒号
string into;
                  switch ("李白")
                  {
                      case "李白":
                          into = "唐代诗人";
                          break;
                      case "岳飞":
                          into = "宋抗金英雄";
                          break;
                      default:
                          into = "查无此人";
                          break;                  }

Answer 4

up...
定义的变量您可以放在switch外边（前面）。