因為主管需要做專案組合Portfolio的管理，因此在MSDN找到這一篇TFS延伸功能的文章：
實作後，發現 … 對於實務上的Portfolio管理幫助不大，
只是單純在原本的需求(Product Backlog)→工作(或稱Sprint Backlog) 的階層再往上加了一層 (恩，想了一下，就暫且在本文稱之為Portfolio Backlog XD)
先看一下預期的結果， 在「待處理項目」中，在功能及需求的階層之上，多了一個我們客製化的最上層： Initiatives。
在右邊可看出整個的工作階層 : Initiatives→特殊功能→需求→工作
PS. 小組報表也可顯示相關資訊～
▌環境
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在MVC中，因時常會使用到將預設選項以IEnumerable<SelectListItem>
的型態Binding至DropDownList
Helper，搜尋找到一版滿完整的IEnumerableExtensions，因此紀錄一下使用方式。
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<div class="col-md-10">
@Html.DropDownListFor(model
=> model.Sex, (IEnumerable<SelectListItem>)ViewData["SexSelectList"],
new { htmlAttributes
= new { @class = "form-control" } })
@Html.ValidationMessageFor(model
=> model.Sex, "", new { @class = "text-danger" })
</div>
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/// <summary>
/// IEnumerable Extensions
/// </summary>
public static class IEnumerableExtensions
{
/// <summary>
///
/// </summary>
/// <param
name="values"></param>
/// <returns></returns>
public static string JoinString(this IEnumerable<string> values)
{
return JoinString(values, ",");
}
/// <summary>
///
/// </summary>
/// <param
name="values"></param>
/// <param
name="split"></param>
/// <returns></returns>
public static string JoinString(this IEnumerable<string> values, string split)
{
var result = values.Aggregate(string.Empty, (current,
value) => current + (split + value));
result =
result.TrimStart(split.ToCharArray());
return result;
}
/// <summary>
/// Do somthing for each item in the
IEnumerable
/// </summary>
/// <typeparam
name="T">Type</typeparam>
/// <param
name="source">Source IEnumerable</param>
/// <param
name="action">Action for doing something</param>
/// <returns>IEnumerable</returns>
public static IEnumerable<T> Each<T>(this IEnumerable<T> source, Action<T> action)
{
if (source != null)
{
foreach (var item in source)
{
action(item);
}
}
return source;
}
/// <summary>
/// Convert IEnumerable to IList<SelectListItem>
/// </summary>
/// <typeparam
name="T">Type</typeparam>
/// <param
name="source">IEnumerable</param>
/// <param name="text">Func for display
text of IEnumerable</param>
/// <param
name="value">Func for value of IEnumerable</param>
/// <returns>IList of
SelectListItem</returns>
public static IList<SelectListItem>
ToSelectList<T>(
this IEnumerable<T> source, Func<T, object> text, Func<T, object> value, bool isOrder = false)
{
return source.ToSelectList(text, value, null, null);
}
/// <summary>
/// Convert IEnumerable to IList<SelectListItem>
/// </summary>
/// <typeparam
name="T">Type</typeparam>
/// <param
name="source">IEnumerable</param>
/// <param name="text">Func for display
text of IEnumerable</param>
/// <param
name="value">Func for value of IEnumerabl</param>
/// <param
name="optionalText">Extra option</param>
/// <returns>IList of SelectListItem</returns>
public static IList<SelectListItem>
ToSelectList<T>(
this IEnumerable<T> source, Func<T, object> text, Func<T, object> value,
string optionalText, bool isOrder = false)
{
return source.ToSelectList(text, value, null, optionalText,
isOrder);
}
/// <summary>
/// Convert IEnumerable to IList<SelectListItem>
/// </summary>
/// <typeparam
name="T">Type</typeparam>
/// <param name="source">IEnumerable</param>
/// <param name="text">Func for display
text of IEnumerable</param>
/// <param
name="value">Func for value of IEnumerabl</param>
/// <param
name="selected">Func for Seleced item</param>
/// <returns>IList of
SelectListItem</returns>
public static IList<SelectListItem>
ToSelectList<T>(
this IEnumerable<T> source, Func<T, object> text, Func<T, object> value,
Func<T, bool> selected, bool isOrder = false)
{
return source.ToSelectList(text, value,
selected, null);
}
/// <summary>
/// Convert IEnumerable to IList<SelectListItem>
/// </summary>
/// <typeparam
name="T">Type</typeparam>
/// <param name="source">IEnumerable</param>
/// <param name="text">Func for display
text of IEnumerable</param>
/// <param
name="value">Func for value of IEnumerabl</param>
/// <param
name="selected">Func for Seleced item</param>
/// <param
name="optionalText">Extra option</param>
/// <returns>IList of
SelectListItem</returns>
public static IList<SelectListItem>
ToSelectList<T>(
this IEnumerable<T> source, Func<T, object> text, Func<T, object> value,
Func<T, bool> selected, string optionalText, bool isOrder = false)
{
return source.ToSelectList(text, value,
selected, optionalText, string.Empty, isOrder);
}
/// <summary>
/// Core function for EnumerableExtension.cs
/// </summary>
/// <typeparam
name="T"></typeparam>
/// <param
name="source"></param>
/// <param
name="text"></param>
/// <param
name="value"></param>
/// <param
name="selected"></param>
/// <param
name="optionalText"></param>
/// <param
name="optionalValue"></param>
/// <returns></returns>
private static IList<SelectListItem>
ToSelectList<T>(
this IEnumerable<T> source, Func<T, object> text, Func<T, object> value,
Func<T, bool> selected, string optionalText, string optionalValue, bool isOrder = false)
{
var items = new List<SelectListItem>();
//預設會先加入optionalText
if (!string.IsNullOrEmpty(optionalText))
{
items.Insert(0, new SelectListItem() { Text =
optionalText, Value = optionalValue });
}
if (source == null)
{
return items;
}
foreach (var entity in source)
{
var item = new SelectListItem();
item.Text =
text(entity).ToString();
item.Value =
value(entity).ToString();
if (selected != null)
{
item.Selected =
selected(entity);
}
if (item.Value != optionalValue)
{
items.Add(item);
}
}
if (isOrder)
{
items = items.OrderBy(d =>
d.Text).ToList();
}
return items;
}
}
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Key
|
Value
|
1
|
Male
|
2
|
Female
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public ActionResult Create()
{
//Given "Text" and
"Value" to the IList<SelectListItem>
ViewData["SexSelectList"] =
sexList.AsEnumerable().ToSelectList(x
=> x.Value, x => x.Key);
//Set isOrder = true
ViewData["SexSelectList"] =
sexList.AsEnumerable().ToSelectList(x => x.Value, x => x.Key,
isOrder: true);
//Set the default selected value in
IList<SelectListItem>
ViewData["SexSelectList"] =
sexList.AsEnumerable().ToSelectList(x => x.Value, x => x.Key, x
=> x.Value.Equals("Female"));
//Add a new item : "Please
select ..." to IList<SelectListItem>
ViewData["SexSelectList"] =
sexList.AsEnumerable().ToSelectList(x => x.Value, x => x.Key, "Please
select ...");
//Set the default selected value
and add a new item in IList<SelectListItem>
ViewData["SexSelectList"] =
sexList.AsEnumerable().ToSelectList(x => x.Value, x => x.Key, x
=> x.Value.Equals("Male"), "Please select ...");
//Do an action for every item in
IList<SelectListItem>
ViewData["SexSelectList"] = sexList.AsEnumerable()
.Each(x => x.Value =
(x.Value.Equals("Male") ? (x.Value + "(男)") : (x.Value + "(女)")))
.ToSelectList(x =>
x.Value, x => x.Key);
return View();
}
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