asp.net - 你能告诉我为什么我收到 `The GridView ' GridView 1' fired event RowUpdating which wasn' t Handling.` 错误消息

Question

我已经能够解决最初无法一致插入记录的问题，但出现了新的错误消息。

现在，我收到GridView“GridView1”触发了未处理的事件RowUpdating。

当我单击“更新”按钮更新一行记录时，会发生此错误。

首先，我单击“编辑”按钮。这会公开更新/取消按钮。

当我单击“更新”按钮时，出现上述错误。

我的第一个想法是 gridview 需要 onRowUpdating 但添加后(请参阅标记代码)，仍然出现相同的错误。

这有点令人沮丧。

这是代码。

Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs)
    Dim dd As DropDownList = DirectCast(GridView1.Rows(e.RowIndex).FindControl("ddlstatus"), DropDownList)
    e.NewValues("status") = dd.SelectedItem.Text
End Sub

标记:

    <asp:GridView ID="GridView1" runat="server" DataSourceID="SqlDataSource1" 
        AutoGenerateColumns="False" DataKeyNames="reqnum" AllowPaging="True" 
        CellPadding="4" ForeColor="#333333" GridLines="None" Visible="True" 
        OnRowDataBound="gvRowDataBound" OnRowEditing="GridView1_RowEditing"
        onrowupdating="GridView1_RowUpdating"
        EnableViewState="False" AutoGenerateDeleteButton="True" 
        AutoGenerateEditButton="True">
        <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
      <Columns>
        <asp:BoundField DataField="rownum" HeaderText="rownum" InsertVisible="False" ReadOnly="True"
            SortExpression="rownum" />
        <asp:BoundField DataField="reqnum" HeaderText="reqnum" SortExpression="reqnum"  />
        <asp:BoundField DataField="reqrecdate" HeaderText="reqrecdate" SortExpression="reqrecdate" />
        <asp:BoundField DataField="reqrecfrom" HeaderText="reqrecfrom" SortExpression="reqrecfrom" />
        <asp:BoundField DataField="skillsets" HeaderText="skillsets" SortExpression="skillsets" />
       <asp:BoundField DataField="application" HeaderText="application" SortExpression="application" />
        <asp:BoundField DataField="hoursperweek" HeaderText="hoursperweek" SortExpression="hoursperweek" />
        <asp:BoundField DataField="fromdate" HeaderText="fromdate" SortExpression="fromdate" />
        <asp:BoundField DataField="todate" HeaderText="todate" SortExpression="todate" />
       <%-- <asp:BoundField DataField="status" HeaderText="status" SortExpression="status" />--%>
        <asp:TemplateField HeaderText="status">
          <EditItemTemplate>
            <asp:DropDownList id="ddlstatus" CssClass="dropdown" DataSourceID="DSforDDL" runat="server">
                 <asp:ListItem Text="none" Value=""></asp:ListItem>
                 <asp:ListItem>Not Started</asp:ListItem>
                 <asp:ListItem>Pending</asp:ListItem>
                 <asp:ListItem>Completed</asp:ListItem>
            </asp:DropDownList>
          </EditItemTemplate>
          <ItemTemplate>
            <asp:Label ID="lblstatus" runat="server" Text='<% #Bind("status") %>'></asp:Label>
          </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="statusupdate" HeaderText="statusupdate" SortExpression="statusupdate" />
        <asp:BoundField DataField="statusupby" HeaderText="statusupby" SortExpression="statusupby" />
      </Columns>
        <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
        <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
        <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
        <EditRowStyle BackColor="#999999" />
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
    </asp:GridView>
      <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
    SelectCommand="SELECT Distinct [rownum],[reqnum], [reqrecdate], [reqrecfrom], [skillsets], [application], [hoursperweek], [fromdate], [todate], [status], [statusupdate], [statusupby] FROM [Term] ORDER BY [reqnum]" 
UpdateCommand="INSERT INTO Term(reum, reqrecdate, reqrecfrom, skillsets, application, hoursperweek, fromdate, todate, status, statusupby, statusupdate) VALUES (@reum,@reqrecdatelbltxt, @reqrecfromlbltxt, @skillsets, @application, @hoursperweek,@fromdate,@todate, @status, @lognametxt, @logdatetxt)"

    <DeleteParameters>
     <asp:Parameter Name="rownum" Type="Int32" />
    </DeleteParameters>
    <UpdateParameters>
        <asp:Parameter Name="reqnum" Type="String" />
        <asp:Parameter DbType="DateTime" Name="reqrecdate" />
        <asp:Parameter Name="reqrecfrom" Type="String" />
        <asp:Parameter Name="skillsets" Type="String" />
        <asp:Parameter Name="application" Type="String" />
        <asp:Parameter Name="hoursperweek" Type="Int32" />
        <asp:Parameter DbType="DateTime" Name="fromdate" />
        <asp:Parameter DbType="DateTime" Name="todate" />
        <asp:Parameter Name="status" Type="String" />
        <asp:Parameter DbType="DateTime" Name="statusupdate" />
        <asp:Parameter Name="statusupby" Type="String" />
        <asp:Parameter Name="rownum" Type="Int32" />
    </UpdateParameters>
    </asp:SqlDataSource>

预先非常感谢您的帮助。

Answer 1

gridView 跟踪处理程序以确保已添加某些内容来有意处理更新。

除非您在代码中的其他地方手动调用“AddHandler”，否则我在您的事件方法上看不到会拦截正在引发的事件的句柄子句。