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建一个自己server control 代替DropDownList

uniquemember(TjHong)

Public Class myDropDownList
Inherits Control
Implements INamingContainer

Protected Overrides Sub CreateChildControls()

Dim DropDownList1 As New System.Web.UI.WebControls.DropDownList
DropDownList1.DataSource =
DropDownList1.DataMember =
DropDownList1.DataValueField =

DropDownList1.DataBind()

Me.Controls.Add(DropDownList1)

End Sub

End Class

用这个代替DropDownList应该能行. 如果不同DataList's ITEM中的DropDownList用不同数据绑定, 也可以做到

(#1641869@0)
Last Updated: 2004-3-12
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工作学习 / IT技术讨论 / ASP。NET问题，谢谢！ -henhen(哼哼@风起白沙忆江南); 2004-3-3 {190} (#1630097@0)
有没有哪位朋友在DATALIST中用过DROPDOWNLIST？把DROPDOWNLIST拖进DATALIST以后，虽然有ID，但是在behind code中找不到这个DROPDOWNLIST的定义，硬要用当然是找不到。假如要用的话，数据如何才能绑定？

自己到开头处根据id,定义一个不就行了？然后，再设datasource = your datalist. -luoboyang(萝卜秧); 2004-3-3 (#1630112@0)

不是的，那个DATALIST是个container，我想把dropdownlist做成它的子控件。 -henhen(哼哼@风起白沙忆江南); 2004-3-3 (#1630189@0)

不知道你想怎么用？ -templeliu(小河); 2004-3-12 {521} (#1641289@0)
我这样使用是好使的：

(1)string [] m_aryStr = new string [] {"abc", "def", "ghi", "jki"} ;
(2)Draw a datalist1 on a Web form and set datalist1.datasource = m_aryStr ;
(3)Drag dropdownlist1 into datalist1(when designing the template) and right click dropdownlist1 to get the property dialog. set the databinding property of dropdownlist1 , make "datasource" the bindable property and bind container.dataitem to datasource.

(4)end the design of template

(5) call databind() in page_load().

(6) ok now

谢谢。 -henhen(哼哼--怎么办？); 2004-3-12 {162} (#1642584@0)
偶的dropdownlist的数据源跟datalist不一起，只是根据datalist绑定数据中的某一个值来设定dropdownlist 中default选的值，就想试试直接这样是不是可行，不行的话用其它方法。

建一个自己server control 代替DropDownList -uniquemember(TjHong); 2004-3-12 {607} (#1641869@0)
Public Class myDropDownList
Inherits Control
Implements INamingContainer

Protected Overrides Sub CreateChildControls()

Dim DropDownList1 As New System.Web.UI.WebControls.DropDownList
DropDownList1.DataSource =
DropDownList1.DataMember =
DropDownList1.DataValueField =

DropDownList1.DataBind()

Me.Controls.Add(DropDownList1)

End Sub

End Class

用这个代替DropDownList应该能行. 如果不同DataList's ITEM中的DropDownList用不同数据绑定, 也可以做到

谢谢，就是这样解决的。 -henhen(哼哼--怎么办？); 2004-3-12 (#1642586@0)

Use FindControl() method of container control, [DataList].FindControl(DrowDownListID) -ijy4y4(Tommy); 2004-3-17 (#1649615@0)

Datalist isn't just a container control. It is a templated control. Can't use findcontrol() method to find control contained in template -uniquemember(TjHong); 2004-3-18 (#1649816@0)

It works to use e.Item.FindControl at DataList.ItemDataBound event's handler. -uniquemember(TjHong); 2004-3-18 (#1650599@0)

Yes, you are right. Should be e.Item.FindControl(), since the dropdownlist controls are repeating in Items. Can be any events passing e relate to item, like selectedIndexChanged. -ijy4y4(Tommy); 2004-3-21 (#1653281@0)

@Florida

建一个自己server control 代替DropDownList

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