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SortedList小用
使用SortedList类建立排序的DropDownList
SortedList 类类似于 Hashtable 和 ArrayList 间的混合。与 Hashtable 一样,SortedList 也基于 IDictionary 接口
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;因此,SortedList 的每一元素都是键和值对。SortedList 提供只返回键列表或只返回值列表的方法。与 ArrayList
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一样,SortedList 是元素序列。它被索引,并且根据特定的比较器被排序。SortedList 在所有 Collections 类中是唯
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一的,在其中每一元素都可通过三种方式访问:使用键、值或索引。
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如果您想要一个保存键/值对的集合并且还需要索引列表的灵活性,请使用 SortedList。
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示例:
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SortedList Sl=new SortedList();
Sl.Add("项一","1");
Sl.Add("项二","2");
Sl.Add("项三","3");
Sl.Add("项四","4");
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//绑定DropDownList
DropDownList1.DataSource = Sl;
DropDownList1.DataValueField = "Value" ;
DropDownList1.DataTextField = "Key" ;
DropDownList1.DataBind() ;
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Private _Detail_Qty_List As SortedList
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Public Property Detail_Qty_List()Property Detail_Qty_List() As SortedList
Get
Return _Detail_Qty_List
End Get
Set(ByVal Value As SortedList)
_Detail_Qty_List = Value
End Set
End Property
If Me._Detail_Qty_List.Count > 0 Then
For Each itmQty As DictionaryEntry In Me._Detail_Qty_List
If Not (itmQty.Value = 0) Then
strSQL = "UPDATE Return_Detail SET Detail_Qty=" & itmQty.Value & " WHERE SN=" &
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itmQty.Key & ""
run.ExecuteNonQuery(conn.CONN_STRING, CommandType.Text, strSQL)
End If
Next
End If
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原文地址:https://www.cnblogs.com/ding0910/p/308476.html
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