找不到类似的内容。 该页面具有一个Repeater,数据源是一个数据表。页面中的行被添加到数据表中,然后Repeater被更新并显示在页面上。例如,用户添加了不正确的信息,并且需要通过在复选框中放置一个复选标记来从Repeater中删除某些内容。如果选中了复选框,则应从数据源中删除所选数据(数据表中的一行),并应更新Repeater。如何实施以及是否有可能?我的代码:
<asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">
<ContentTemplate>
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<asp:TableCell Width="80px" BackColor="#e3a99a" HorizontalAlign="Right">
<asp:CheckBox ID="cb_GetOut" runat="server" AutoPostBack="true" Checked="false" Text="DeleteRow" style="padding-right:5px" />
</asp:TableCell>
</ItemTemplate>
</asp:Repeater>
</ContentTemplate>
</asp:UpdatePanel>
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Page.IsPostBack = False Then
dtTest_add.Columns.AddRange(New DataColumn(3) {New DataColumn("text1"), New DataColumn("text2"), New DataColumn("text3"), New DataColumn("text4")})
ViewState("dtTest_add") = dtTest_add
Else
dtTest_add = ViewState("dtTest_add")
Repeater1.DataSource = TryCast(ViewState("dtTest_add"), DataTable)
Repeater1.DataBind()
End If
End Sub
Protected Sub btn_addTest_Click(sender As Object, e As System.EventArgs) Handles btn_addTest.Click
dtTest_add.Rows.Add(txt1.Text, txt2.Text, txt3.Text, txt4.Text)
dtTest_add = ViewState("dtTest_add")
ViewState("dtTest_add") = dtTest_add
Repeater1.DataSource = TryCast(ViewState("dtTest_add"), DataTable)
Repeater1.DataBind()
UpdatePanel1.Update()
End Sub
Protected Sub Repeater1_ItemCreated(sender As Object, e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemCreated
Dim cb_GO As CheckBox = CType(e.Item.FindControl("cb_GetOut"), CheckBox)
ScriptManager.GetCurrent(Page).RegisterAsyncPostBackControl(cb_GO)
End Sub
Protected Sub Repeater1_ItemDataBound(sender As Object, e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemDataBound
Dim cb_GO As CheckBox = DirectCast(e.Item.FindControl("cb_GetOut"), CheckBox)
cb_GO.Attributes("onclick") = "this.checked = (" + dtTest_add + ").deleteRow(" + CStr(e.Item.ItemIndex) + ");"
End Sub
“ btn_addTest”按钮位于不在Repeater中的表单上。使用它,我可以将数据添加到数据源。然后更新中继器。
我在此代码行中处理“ onclick”复选框事件
cb_GO.Attributes(“ onclick”)=“ this.checked =(” + dtTest_add + “).deleteRow(” + CStr(e.Item.ItemIndex)+“);”
有必要从数据表中删除数据,然后Repeater会被简单地更新。但是,你是怎么做的?在ItemDataBound中,Repeater无法访问数据表。