SetValue

Question

//stcTmp 是个结构体 public struct stc1
    {        public string sTable;        public string sColumn;
        
        public stcColumn(int n)
        {
            sTable = "";
            sColumn = "";
            
        }
    }
stc1 stcTmp =new stc1(0);
foreach (FieldInfo fiTmp in stcTmp.GetType().GetFields())
        {
            if (fiTmp != null)
            {
                fiTmp.SetValue(stcTmp, "aaa");
            }
        }这句  fiTmp.SetValue(stcTmp, "aaa")无效，请问各位高手哪里错了？

Answer 1

 int i = 1;      
foreach(FieldInfo var in a.GetType().GetFields(BindingFlags.NonPublic))      {         
 if (var.DeclaringType == typeof(int))          
{             
 var.SetValue(a, i);         
 }      
} private   object  Set(object   o) 
                { 
                        FieldInfo[]   fields =o.GetType().GetFields(); 
                        Type   t=o.GetType(); 
                        if(fields[0].FieldType.ToString()=="System.Int32 ") 
                        { 
                                fields[0].SetValue(o,i); 
                        } 
                        return   o; 
                } 

Answer 2

本帖最后由 ojlovecd 于 2009-12-15 21:30:47 编辑

  

Answer 3

stc1 stcTmp = new stc1();
                object obj = stcTmp;
                foreach (FieldInfo fiTmp in stcTmp.GetType().GetFields())
                {
                    if (fiTmp != null)
                    {
                        fiTmp.SetValue(obj, "aaa");
                    }
                }
                stcTmp = (stc1)obj;

Answer 4

此方法将 value 分配给此实例在 obj 对象上反映的字段。如果该字段是静态的，则将忽略 obj。对于非静态字段，obj 应是继承或声明该字段的类的实例