C#关于类型之间的转换，Object、int、string、double

基本类型int double bool

扩展类型 Int32 Int64

  switch(value.GetType().ToString()) 
                { 
                    case "System.String": 
                        return Int32.Parse((string)value); 
                    case "System.Int64": 
                        return Int32.Parse(((long)value).ToString()); 
                    case "System.Int32": 
                        return (int)value; 
                    case "System.Double": 
                        return (int)System.Math.Round((double)value, 0); 
                    case "System.Boolean": 
                        return 0; 
                    case "System.DateTime": 
                        return 0;  
                
                    case "System.IO.MemoryStream": 
                        return MyConvert.getInt(MyConvert.getString(value)); 
                    case "System.Byte[]": 
                        return MyConvert.getInt(MyConvert.getString(value));
                  
                    default: 
                        return 0; 
                } 

注意区分如果是System.String或者是System.Int64则要使用Int32.Parse（）；如果是System.Int32则直接用（int）强制类型转换。如果是double则需要调用System.Math.Round((double)value,0);