public void SetMember(object obj, EnumMemberValue enumMemberValue)
{
PropertyInfo propertyInfo = null;
object currentObj = obj;
for (int i = 0; i < this._memberNames.Length; i++)
{
if (i == this._memberNames.Length - 1)
{
propertyInfo = currentObj.GetType().GetProperty(this._memberNames[i]);
}
else
{
currentObj = currentObj.GetType().GetProperty(this._memberNames[i]).GetValue(currentObj, null);
if (currentObj == null)
{
return;
}
}
}
if (propertyInfo == null)
{
return;
}
object value;
if (enumMemberValue == EnumMemberValue.NewValue)
{
value = this.NewValue;
}
else
{
value = this.OldValue;
}
try
{
if (propertyInfo.CanWrite)
{
if (propertyInfo.PropertyType.IsEnum)
{
propertyInfo.SetValue(currentObj, Enum.Parse(propertyInfo.PropertyType, value.ToString()), null);
}
else
{
propertyInfo.SetValue(currentObj, value, null);
}
}
}
catch (Exception ex)
{
Debug.Assert(false, ex.Message);
}
}
/// <summary>
/// 为指定的对象设置属性（Property）值
/// </summary>
/// <param name="obj"></param>
/// <param name="enumMemberValue"></param>
public void SetMember(object obj, EnumMemberValue enumMemberValue)
{
PropertyInfo propertyInfo = null;
object currentObj = obj;
for (int i = 0; i < this._memberNames.Length; i++)
{
//如果已经到了属性(Property)路径的底层
if (i == this._memberNames.Length - 1)
{
propertyInfo = currentObj.GetType().GetProperty(this._memberNames[i]);
}
else
{
//如果还没有到路径底层
currentObj = currentObj.GetType().GetProperty(this._memberNames[i]).GetValue(currentObj, null);
//此时currentObj有可能为null，如窗体元素的字体，就可能发生为null的情况
//但是照正常逻辑，应该不会出现这种情况，这里还是做个判断，防止程序意外出错
if (currentObj == null)
{
return;
}
}
}
if (propertyInfo == null)
{
return;
}
object value;
if (enumMemberValue == EnumMemberValue.NewValue)
{
value = this.NewValue;
}
else
{
value = this.OldValue;
}
try
{
if (propertyInfo.CanWrite)
{
if (propertyInfo.PropertyType.IsEnum)
{
propertyInfo.SetValue(currentObj, Enum.Parse(propertyInfo.PropertyType, value.ToString()), null);
}
else
{
propertyInfo.SetValue(currentObj, value, null);
//忘了当时为什么要加Convert.ChangeType
//try
//{
//在调用Convert.ChangeType 时，被转换的对象必须实现 IConvertible
//propertyInfo.SetValue(currentObj, Convert.ChangeType(value, propertyInfo.PropertyType), null);
//}
//catch (InvalidCastException ex)
//{
// Debug.Assert(false, ex.Message);
//}
}
}
}
catch (Exception ex)
{
Debug.Assert(false, ex.Message);
}
}
