C# connect to the database exception capture try

Key code meanings
• try code that may be wrong
• catch the code to be executed when an error occurs. Once the program goes wrong, the catch will have an error object, the type is Exception
• finally code that must be executed if there is no error

Code display

   try{
    
    
        //不出错时执行的代码
    }catch(Exception e){
    
    
       	Console.WriteLine(e);//输出错误原因e
    }finally{
    
    
		Console.WriteLine("程序结束");//出不出错都要执行的代码
	}