[SharePointPermission(SecurityAction.Demand, ObjectModel=true)]
protected override void CreateChildControls()
{
this.Controls.Clear();
if (this.ControlTemplate == null)
{
throw new ArgumentException("Could not find ListFieldIterator control template.");
}
for (int i = 0; i < base.Fields.Count; i++)
{
SPField field = base.Fields[i];
if (!this.IsFieldExcluded(field))
{
TemplateContainer child = new TemplateContainer();
this.Controls.Add(child);
child.ControlMode = base.ControlMode;
child.FieldName = field.InternalName;
this.ControlTemplate.InstantiateIn(child);
}
}
} 

public class EditControlListFieldIterator : Microsoft.SharePoint.WebControls.ListFieldIterator
{
protected override void CreateChildControls()
{
//只处理编辑模式
            if (this.ControlMode != SPControlMode.Edit)
{
base.CreateChildControls();
return;
}
SPUser currentUser = SPContext.Current.Web.CurrentUser ;
//站点管理员可以编辑所有字段
            if (currentUser.IsSiteAdmin)
{
base.CreateChildControls();
return;
}
//获取权限配置信息
            ListFieldEditSetting listSetting = ListFieldEditSetting.GetListSetting( this.ListId ) ;
if( listSetting == null || listSetting.Count == 0 )
{
base.CreateChildControls();
return ;
}
//base.CreateChildControls();
            this.Controls.Clear();
if (this.ControlTemplate == null)
{
throw new ArgumentException("Could not find ListFieldIterator control template.");
}
SPFieldUserValue authorFieldValue = new SPFieldUserValue ( SPContext.Current.Web , ""+ this.ListItem["Author"] ) ;
SPUser author = authorFieldValue.User;
Type t = typeof(TemplateContainer);
//反射获取TemplateContainer的ControlMode属性
            PropertyInfo ControlModeProp = t.GetProperty("ControlMode", BindingFlags.Instance | BindingFlags.NonPublic);
PropertyInfo FieldNameProp = t.GetProperty("FieldName", BindingFlags.Instance | BindingFlags.NonPublic);
for (int i = 0; i < base.Fields.Count; i++)
{
SPField field = base.Fields[i];
if (!this.IsFieldExcluded(field))
{
TemplateContainer child = new TemplateContainer();
this.Controls.Add(child);
FieldEditSetting set = listSetting.GetByFieldName(field.InternalName);
if (set != null && !set.CanEdit(currentUser, author))
{
//child.ControlMode = base.ControlMode;
//child.FieldName = field.InternalName;
//ControlModeProp.SetValue(child, this.ControlMode,null);
                        ControlModeProp.SetValue(child, SPControlMode.Display, null);
}
FieldNameProp.SetValue(child, field.InternalName, null);
this.ControlTemplate.InstantiateIn(child);
}
}
}
}