我需要使用RowDeleted事件来尝试重置FooterControl下拉列表中的数据。我将事件添加到Gridview中的标记中并在事件中放置了一个断点，但它没有被触发。
我在另一篇文章中读到RowDeleted需要数据源到网格才能使用DataSourceID和.DataSource。我使用DataTables绑定到网格，所以我相信我必须使用.DataSource属性而不是DataSourceID。
这是我的标记：
<div id="DelegateGridWrapper">
<asp:GridView ID="DelegateInfoGridView" runat="server"
AutoGenerateColumns="false" Caption="Delegate Information"
CaptionAlign="Top" CssClass="grid" RowStyle-Wrap="true"
HorizontalAlign="Left" ShowFooter="true"
AllowPaging="true" PageSize="5" ShowHeaderWhenEmpty="false" onrowediting="DelegateInfoGridView_RowEditing"
onrowcancelingedit="DelegateInfoGridView_RowCancelingEdit" onrowdeleting="DelegateInfoGridView_RowDeleting"
onrowupdating="DelegateInfoGridView_RowUpdating"
ondatabound="DelegateInfoGridView_DataBound"
onrowcommand="DelegateInfoGridView_RowCommand"
onrowdeleted="DelegateInfoGridView_RowDeleted">
<Columns>
<asp:TemplateField HeaderText="Recipient ID">
<ItemTemplate>
<asp:Label ID="deligvLblRecipientID" runat="server" Text='<%# Bind("RecipientID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delegate" ItemStyle-Wrap="false">
<ItemTemplate>
<asp:Label ID="deligvLblRecipientName" runat="server" Text='<%# Bind("RecipientName") %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="deligvDDLRecipientName" runat="server" ClientIDMode="Static"
data-placeholder="Choose delegate…" class="chosen-single">
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Active">
<ItemTemplate>
<asp:Label ID="deligvLblActive" runat="server" Text='<%# (Boolean.Parse(Eval("Active").ToString())) ? "Yes" : "No" %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="deligvDDLActive" runat="server" Text='<%# (Boolean.Parse(Eval("Active").ToString())) ? "Yes" : "No" %>'>
<asp:ListItem>Yes</asp:ListItem>
<asp:ListItem>No</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="deligvDDLActiveInsert" runat="server">
<asp:ListItem Selected="True">Yes</asp:ListItem>
<asp:ListItem>No</asp:ListItem>
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Action" ItemStyle-Wrap="false" ItemStyle-HorizontalAlign="Center">
<ItemTemplate>
<asp:Button ID="deligvEditButton" runat="server" CausesValidation="False" CommandName="Edit"
Text="Edit" CssClass="gridActionbutton">
</asp:Button>
<asp:Button ID="deligvDeleteButton" runat="server" CausesValidation="False" CommandName="Delete" ClientIDMode="Static"
Text="Delete" CssClass="gridActionbutton" OnClientClick="return confirm('Are you sure you want to delete this Delegate Information?')" >
</asp:Button>
</ItemTemplate>
<EditItemTemplate>
<asp:Button ID="deligvUpdateButton" runat="server" CausesValidation="False" CommandName="Update"
Text="Update" CssClass="gridActionbutton"></asp:Button>
<asp:Button ID="deligvCancelButton" runat="server" CausesValidation="False" CommandName="Cancel"
Text="Cancel" CssClass="gridActionbutton"></asp:Button>
</EditItemTemplate>
<FooterTemplate>
<asp:Button ID="deligvAddButton" runat="server" CommandName="Add" Text="Add Delegate" Width="90%" CausesValidation="false"
CssClass="gridActionbutton">
</asp:Button>
</FooterTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
<tr>
<th>Recipient ID</th>
<th>Delegate</th>
<th>Active</th>
<th>Action</th>
</tr>
<tr>
<td colspan="4" style="text-align:center;">
No Delegates were found for you. Delegates can be added by clicking the 'Add Delegate' Button.
</td>
</tr>
<tr>
<td></td>
<td>
<asp:DropDownList ID="deligvDDLRecipientName" runat="server" ClientIDMode="Static"
data-placeholder="Choose delegate…" class="chosen-single">
</asp:DropDownList>
</td>
<td>
<asp:DropDownList ID="deligvDDLActiveInsert" runat="server">
<asp:ListItem Selected="True">Yes</asp:ListItem>
<asp:ListItem>No</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:Button ID="deligvAddButtonEmpty" runat="server" CommandName="Add" Text="Add Delegate" Width="90%" CausesValidation="false"
CssClass="gridActionbutton">
</asp:Button>
</td>
</tr>
</EmptyDataTemplate>
</asp:GridView>
这是我绑定到网格的方式：
private void populateDelegateInfoGrid()
{
try
{
m_strUserID = CommonMethods.ParseUserID(User.Identity.Name);
m_strXmlTableData = m_pagingClient.GetUserDelegates(m_strUserID);
m_dtUserDelegates = CommonMethods.ParseXML(m_strXmlTableData);
DelegateInfoGridView.DataSource = m_dtUserDelegates;
DelegateInfoGridView.DataBind();
}
catch (Exception ex)
{
//TO DO: Response.Redirect("~/Error.aspx");
}
}
这是我的RowDelete事件：
protected void DelegateInfoGridView_RowDeleted(object sender, GridViewDeletedEventArgs e)
{
try
{
m_strUserID = CommonMethods.ParseUserID(User.Identity.Name);
//Get the Footer controls that have the new entry data
Control tFooterControls = getFooterControls(DelegateInfoGridView);
DropDownList tddlRecipientNames = tFooterControls.FindControl("deligvDDLRecipientName") as DropDownList;
m_strXmlTableData = m_pagingClient.GetAllPossibleDelegates(m_strUserID);
DataTable tdtAllDelegates = CommonMethods.ParseXML(m_strXmlTableData);
tddlRecipientNames.DataSource = tdtAllDelegates;
tddlRecipientNames.DataTextField = "RecipientName";
tddlRecipientNames.DataValueField = "RecipientID";
tddlRecipientNames.DataBind();
tddlRecipientNames.Items.Insert(0, new ListItem("Select...", "0"));
}
catch (Exception ex)
{
//TO DO: Response.Redirect("~/Error.aspx");
}
}
如何触发RowDeleted事件？
更新
RowDeleting事件......
protected void DelegateInfoGridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
GridViewRow row = (GridViewRow)DelegateInfoGridView.Rows[e.RowIndex];
int tiRecipientID = Convert.ToInt32((row.FindControl("deligvLblRecipientID") as Label).Text);
m_strUserID = CommonMethods.ParseUserID(User.Identity.Name);
m_pagingClient.DeleteDelegateInformation(m_strUserID, tiRecipientID);
populateDelegateInfoGrid();
}
catch (Exception ex)
{
//TO DO: Response.Redirect("~/Error.aspx");
}
}