asp.net项目开发中用到的小技巧

1 显示枚举的值：<%# (cn80s.ddpm.model.enum.enumbidcardstatus)(int)eval("perpaidcard_status")%>
2 为下拉框绑定枚举：

getenumlist(ddlbids);
void getenumlist(dropdownlist ddl)
{
foreach (enumbidcardtype s in system.enum.getvalues(typeof(enumbidcardtype)))
{
ddl.items.add(new listitem(s.tostring(), ((int)s).tostring()));
}
}
this.ddlbids.datasource = getenumlist(typeof(enumbidcardtype), true);
this.ddlbids.datatextfield = "text";
this.ddlbids.datavaluefield = "value";
this.ddlbids.databind();
public static list<listitem> getenumlist(type enumtype, bool allalloption)
{
if (enumtype.isenum == false)
{
return null;
}
list<listitem> list = new list<listitem>();
if (allalloption == true)
{
list.add(new listitem("--全部--", ""));
}
type typedescription = typeof(descriptionattribute);
system.reflection.fieldinfo[] fields = enumtype.getfields();
string strtext = string.empty;
string strvalue = string.empty;
foreach (fieldinfo field in fields)
{
if (field.isspecialname) continue;
strvalue = field.getrawconstantvalue().tostring();
object[] arr = field.getcustomattributes(typedescription, true);
if (arr.length > 0)
{
strtext = (arr[0] as descriptionattribute).description;
}
else
{
strtext = field.name;
}
list.add(new listitem(strtext, strvalue));
}
return list;
}