我有 ：
public void InitializeStatusList(DropDownList list)
{
var dictionaryEntries = GetEntriesFromDatabase();
list.DataSource = dictionaryEntries.Where(entry => entry is EntryStatus1 || entry is EntryStatus2);
list.DataBind();
}
我有很多这样的功能.我想用translateEntries作为谓词传递的查询条件编写公共函数.
例如：
public void InitializeStatusList(DropDownList list)
{
CommonInitializeStatusList(DropDownList list,entry => entry is EntryStatus1 || entry is EntryStatus2);
}
public void CommonInitializeStatusList(DropDownList list,??????????????? predicate)
{
var dictionaryEntries = GetEntriesFromDatabase();
list.DataSource = dictionaryEntries.Where(predicate);
list.DataBind();
}
什么代表???????????????
提前致谢
解决方法
Func< Entry,bool>谓词应该有效,其中Entry是入口变量的类型.
