我如何在没有数据库查询的情况下删除 gridview 中的行

Question

这是我的gridview

<asp:GridView ID="Grid" runat="server" AutoGenerateColumns="false" AutoGenerateEditButton="true"
    ForeColor="#333333" Width="600px" OnRowEditing="Grid_RowEditing" OnRowDeleting="Grid_RowDeleting"
    OnRowUpdating="Grid_RowUpdating" OnRowDeleted="Grid_RowDeleted" OnRowCancelingEdit="Grid_RowCancelingEdit"
    ShowFooter="True" DataKeyNames="id">
    <Columns>
        <asp:CommandField ShowDeleteButton="true" />
        <asp:CommandField ShowInsertButton="true" ShowHeader="true" />
        <asp:BoundField ReadOnly="true" DataField="ProductID" HeaderText="ProductID" NullDisplayText="sad" />
        <asp:BoundField ReadOnly="true" DataField="ProductName" HeaderText="ProductName" />
        <asp:BoundField DataField="Quantity" HeaderText="Quantity" />
        <asp:BoundField DataField="UnitPrice" HeaderText="TotalPrice" />
    </Columns>
</asp:GridView>

我想用这个方法删除行

protected void Grid_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    int index = Convert.ToInt32(e.RowIndex);
    Grid.DeleteRow(index);
}

但几秒钟后我得到

This webpage is not available

我该怎么办？

这是我的数据源。我想删除行而不删除 db

中的记录

var query = 
    from order in mydb.Order_Details
    join orderdetail in mydb.Order_Details on order.OrderID equals orderdetail.OrderID
    join product in mydb.Products on order.ProductID equals product.ProductID
    where order.OrderID==editOrderID
    select new
    {
        ProductID = order.Product.ProductID,
        ProductName = order.Product.ProductName,
        Quantity = order.Quantity,
        UnitPrice = order.UnitPrice
    }
    into f
    group f by f.ProductID;

var outputData = query.Select(g => new
    {
        id= g.Key,
        ProductID = g.FirstOrDefault().ProductID,
        ProductName = g.FirstOrDefault().ProductName,
        Quantity = g.FirstOrDefault().Quantity,
        UnitPrice = g.FirstOrDefault().UnitPrice
    });

Grid.DataSource = outputData;
Grid.DataBind();

Answer 1

您可以在 RowDeleting 事件中创建该行 invisible，而不是从 UI 中删除 -

GridView1.rows[i].visible=false;

我如何在没有数据库查询的情况下删除 gridview 中的行

how I can delete row in gridview without queries in DB

c#

asp.net

gridview