我有下一个gridview:
<asp:UpdatePanel ID="upCustomer" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnCustomerSearch" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="gvPersons" EventName="PageIndexChanging" />
</Triggers>
<ContentTemplate>
<asp:TextBox ID="txtCode" runat="server" />
<asp:Button ID="btnCustomerSearch" runat="server" Text="Search" OnClick="btnCustomerSearch_Click" />
<asp:GridView ID="gvPersons" runat="server" AutoGenerateColumns="False" AllowPaging="True"
PageSize="10" GridLines="Vertical" EmptyDataText="No results"
ShowHeaderWhenEmpty="True" OnRowDataBound="gvPersons_RowDataBound"
OnPageIndexChanging="gvPersons_PageIndexChanging"
onselectedindexchanging="gvPersons_SelectedIndexChanging">
<Columns>
<asp:BoundField DataField="Personid" />
<asp:BoundField DataField="Name" HeaderText="Nombre" />
<asp:BoundField DataField="Phone" HeaderText="Telefono" />
<asp:BoundField DataField="Email" HeaderText="Email" />
</Columns>
<PagerSettings Mode="NumericFirstLast" Position="TopAndBottom" />
</asp:GridView>
</ContentTemplate>
我需要下一个功能:
是否可以在gridview中的某些事件中获取异步后备并在其他事件中进行回发?
答案 0 :(得分:2)
在更新面板中插入一个按钮,并为其定义 PostBackTrigger
<asp:UpdatePanel ID="upCustomer" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false">
<Triggers>
...
<asp:PostBackTrigger ControlID="PostBackButton" />
</Triggers>
<ContentTemplate>
...
<asp:Button ID="PostBackButton" runat="server" Text="Button" OnClick="PostBackButton_Click" />
</ContentTemplate>
</asp:UpdatePanel>
在您的网格上插入 TemplateField ,如下所示
<Columns>
<asp:TemplateField>
<ItemTemplate>
<input type="button" onclick="javascript:__doPostBack('<%= PostBackButton.ClientID %>',<%# ((GridViewRow)Container).RowIndex %>)" value="Select" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
当用户点击网格中的任何按钮时,我们必须手动触发 PostBackButton 的 Click 事件,并传递 RowIndex 作为论点。
在服务器端
protected void PostBackButton_Click(object sender, EventArgs e)
{
string argument = Request.Form["__EVENTARGUMENT"];
gvPersons.SelectedIndex = Convert.ToInt32(argument);
}
现在我们只需要隐藏 PostBackButton ...
protected void Page_Load(object sender, EventArgs e)
{
// ...
PostBackButton.Style.Add("display", "none");
}
...并禁用页面的事件验证,否则当用户选择行时我们将获得 ArgumentException
<%@ Page Language="C#" ... EnableEventValidation="false" %>
是。这是可能的。
答案 1 :(得分:0)
如上所述here,您可以尝试这个
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnCustomerSearch" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="gvPersons" EventName="PageIndexChanging" />
<asp:PostBackTrigger ControlID="gvPersons" EventName="SelectedIndexChanging" />
</Triggers>