c#抽签系统的实现示例

一个基于c#的简单抽签系统，可以重新导入数据，清空数据。
代码简单，比较适合初学者。

导入数据时会创建一个txt文本，可以在里面看到输入

private void button1_click(object sender, eventargs e)   //确定按钮
        {
            string path = system.io.directory.getcurrentdirectory() + "//name.txt";     
             random rand = new random(system.guid.newguid().gethashcode());               
             string[] name = file.readalllines(path);                          
            if (name.length == 0)
            {
                messagebox.show("导入数据不能为空！");
            }
            else
            {
                textbox1.text = name[rand.next(0, name.length)];              //抽签          
                textbox1.forecolor = color.black;
            }
        }
         private void button3_click(object sender, eventargs e)     //导入数据
        {
            string qkong = "";                                                               //清空name.txt
            string curdir11 = system.appdomain.currentdomain.basedirectory + @"name.txt.txt";    
            string filepath11 = curdir11;
            system.io.streamwriter file11 = new system.io.streamwriter(filepath11, false);     /
            file11.write(qkong);                                                                 
            file11.close();                                                                   
            file11.dispose();                                                                
            string result = textbox2.text.trim();                                          
            string d = system.appdomain.currentdomain.basedirectory + @"name.txt";    
            string filepath = d;
            system.io.streamwriter file1 = new system.io.streamwriter(filepath, false);     
            file1.write(result);                                                              
            file1.close();                                                                 
            file1.dispose();                                                                
            messagebox.show("导入成功");
        }
        private void button4_click(object sender, eventargs e)      //清空数据
        {
            string qkong = "";                                                              
            string s = system.appdomain.currentdomain.basedirectory + @"name.txt.txt";   
            string filepath11 = s;
            system.io.streamwriter file11 = new system.io.streamwriter(filepath11, false);     
            file11.write(qkong);                                                              
            file11.close();                                                                  
            file11.dispose();                                                                
            textbox2.text = "";
        }
        private void textbox2_textchanged(object sender, eventargs e)
        {
            this.textbox2.multiline = true;
        }

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