我是 jQuery 新手，有一些问题。我创建了一个服务器 Web 控件（它实现了一个webControl），并且想知道在事件触发时如何刷新控件。换句话说：
- 我有一个具有下拉列表的服务器控件。
- 当用户进行选择时，我想引起部分回发并重新加载控件（设置一些可以由使用控件的页面读取的公共属性值）。
这可以通过使用 jQuery 来完成，还是我仍然需要更新面板？
这是我的服务器控件：
<Assembly: WebResource("com.myControls.WebControls.miniActiveDirectorySearchStyle.css", "text/css", PerformSubstitution:=True)>
Namespace com.myControls.WebControls
< _
System.Drawing.ToolboxBitmap(GetType(Button), "myControls.WebControls.ActiveDirectorySearch.bmp"), ToolboxData("<{0}:miniActiveDirectorySearch ID='miniActiveDirectorySearch{0}' runat=""server""> </{0}:miniActiveDirectorySearch>"), _ ClientCssResource("com.myControls.WebControls.miniActiveDirectorySearchStyle.css")> _
Public Class miniActiveDirectorySearch
Inherits WebControl
Public ddlValue As New TextBox
Public ddlText As New TextBox
Private tblMainLayout As HtmlTable
Private divControlContainer As New HtmlGenericControl()
Private modalExtender As New ModalPopupExtender()
Private tbSearchUser As New TextBox
''' <summary>
'''X Offset for modal dialog
''' </summary>
''' <value></value>
''' <returns></returns>
''' <remarks></remarks>
<Description("Mouser Over Highlight Color")> Public Property mouseOverColor As String = "#9db3d9"
''' <summary>
'''X Offset for modal dialog
''' </summary>
''' <value></value>
''' <returns></returns>
''' <remarks></remarks>
<Description("Drop Down List Width")> Public Property ddlWidth As String = "100"
Private Sub attachWebResources()
Dim styleLink As String = "<link rel='stylesheet' text='text/css' href='{0}' />"
Dim location As String = Page.ClientScript.GetWebResourceUrl(Me.[GetType](), "myControls.WebControls.miniActiveDirectorySearchStyle.css")
Dim styleInclude As New LiteralControl([String].Format(styleLink, location))
DirectCast(Page.Header, HtmlControls.HtmlHead).Controls.Add(styleInclude)
ScriptManager.RegisterClientScriptResource(Me, Me.GetType, "com.myControls.ActiveDirectory.WebControls.jquery-1.4.1.min.js")
ScriptManager.RegisterClientScriptResource(Me, Me.GetType, "com.myControls.ActiveDirectory.WebControls.miniActiveDirectorySearch.js")
End Sub
Protected Overrides Sub CreateChildControls()
createDynamicControls()
MyBase.CreateChildControls()
End Sub
Protected Overrides Sub OnInit(ByVal e As System.EventArgs)
attachWebResources()
MyBase.OnInit(e)
End Sub
Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
MyBase.OnLoad(e)
End Sub
Private Sub createDynamicControls()
Controls.Clear()
Try
tblMainLayout = buildMaintable()
Controls.Add(tblMainLayout)
Catch ex As Exception
Throw New ApplicationException("Exception Occurred Creating Control.", ex.InnerException)
End Try
End Sub
Private Function buildMaintable() As HtmlTable
tblMainLayout = New HtmlTable
Dim divImage As New HtmlGenericControl("div")
ddlText = New TextBox
ddlValue = New TextBox
With ddlText
.ID = "ddlText"
End With
With ddlValue
.ID = "ddlValue"
End With
With divControlContainer
.ID = Me.UniqueID & "_divSearchResults"
.Attributes.Add("onClick", "hideMe(this)")
End With
With divImage
.ID = Me.UniqueID & "_ImageDiv"
End With
With tblMainLayout
.CellPadding = 0
.CellSpacing = 0
.Style.Add("border-collapse", "collapse")
Dim tr As New HtmlTableRow
With tr
Dim td As New HtmlTableCell
With td
With tbSearchUser
.ID = Me.UniqueID & "_tbSearchName"
.Attributes.Add("onKeyPress", "searchKeyPress(event, this.id, '" & divControlContainer.UniqueID & "', '" & mouseOverColor & "','" & ddlText.ID & "','" & ddlValue.ID & "')")
.Attributes.Add("onmouseover", "document.getElementById('" & divImage.ID & "').className='DivSearchMouseOverMini', tbMouseOver(this)")
.Attributes.Add("OnmouseOut", "document.getElementById('" & divImage.ID & "').className='divSearchDefaultMini',tbMouseOut(this)")
.Width = ddlWidth
.Attributes.Add("onClick", "showSearchResults('" & divControlContainer.UniqueID & "')")
.CssClass = "tbSearchDefault"
End With
.Controls.Add(tbSearchUser)
.Controls.Add(ddlText)
.Controls.Add(ddlValue)
End With
.Controls.Add(td)
td = New HtmlTableCell
With td
With divImage
.Attributes.Add("class", "divSearchDefaultMini")
.Attributes.Add("onmouseover", "this.className='DivSearchMouseOverMini',document.getElementById('" & tbSearchUser.ID & "').className='tbSearchMouseOver'")
.Attributes.Add("onmouseout", "this.className='divSearchDefaultMini', document.getElementById('" & tbSearchUser.ID & "').className='tbSearchDefault'")
.Attributes.Add("onClick", "showSearchResults('" & divControlContainer.UniqueID & "')")
End With
.Controls.Add(divImage)
End With
.Controls.Add(td)
End With
.Controls.Add(tr)
tr = New HtmlTableRow
With tr
Dim td As New HtmlTableCell
With td
.ColSpan = 2
.Controls.Add(divControlContainer)
End With
.Controls.Add(td)
End With
.Controls.Add(tr)
End With
Return tblMainLayout
End Function
End Class
此代码创建一个带有文本框和样式的服务器控件以模仿下拉列表。这样，我可以在下拉列表中添加一些功能。当用户对“下拉列表”或文本框进行更改时，我想引起部分回帖。我所有的 jQuery 都在另一个作为 Web 资源添加的文件中完成。