c# - GridView 'OrdersGridView' 触发了未处理的事件 RowDeleting

Question

我一遍又一遍地遇到这个错误。

将数据加载到 GridView 中是可行的，但是当我想删除一行时，我遇到了那个错误。

<asp:GridView ID="OrdersGridView" runat="server" AutoGenerateColumns="False" onrowdeleted="OrdersGridView_RowDeleted">
    <Columns>
        <asp:TemplateField HeaderText="Product Name">
            <ItemTemplate>
                <asp:HiddenField runat="server" ID="HiddenField1" Value='<%#Eval("oid")%>'></asp:HiddenField>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="titel" HeaderText="Name" />
        <asp:BoundField DataField="oid" HeaderText="Itemno" />
        <asp:BoundField DataField="prijs" HeaderText="Price" />
        <asp:CommandField ButtonType="Link" CausesValidation="false" HeaderText="Update" ShowDeleteButton="True" />
        <asp:BoundField DataField="prijs" HeaderText="Subtotal" />
    </Columns>
</asp:GridView>

C# 代码隐藏 - 我并没有真正从数据库中删除该行，但它是一个测试:

protected void OrdersGridView_RowDeleted(object sender, System.Web.UI.WebControls.GridViewDeletedEventArgs e)
{
    if (e.Exception != null)
    {
        lblStatus.Text = e.Exception.ToString();
    }
    else 
    {
        string sValue = ((HiddenField)OrdersGridView.SelectedRow.Cells[1].FindControl("HiddenField1")).Value;
        lblStatus.Text = sValue;
    }
}

但是在点击之后，我得到了一个带有下一个错误的大黄页:

The GridView 'OrdersGridView' fired event RowDeleting which wasn't handled.

Answer 1

在 GridView 中有一个 Delete 按钮，甚至是 CommandName 为 delete 的常规按钮，将自动尝试触发 OnRowDeleting。您可以只添加它来让事情变得愉快，但不要让它做任何事情，这样它就不会影响您的删除行为。

您可以将 OnRowDeleting 添加到您的 GridView:

<asp:GridView ID="OrdersGridView" runat="server" AutoGenerateColumns="False" onrowdeleted="OrdersGridView_RowDeleted" OnRowDeleting="OrdersGridView_RowDeleting">

然后在您的代码隐藏中添加:

void OrdersGridView_RowDeleting (object sender, GridViewDeleteEventArgs e)
{
}