Question

我使用的GridView绑定到对象列表而不是直接SQL查询。如果工作的人口，那么更新。我已手动为此gridview生成插入，这也正常。当尝试从gridview运行delete命令时，正在调用正确的方法，但是没有填充任何参数。唯一需要的参数是@ID但是，阅读其他帖子，一般修复一直是添加所有参数，但仍无济于事。

$Username = Domain\username";
   $Password = ConvertTo-SecureString "password" -AsPlainText -Force
    $cred = New-Object System.Management.Automation.PSCredential($Username, $Password)
   $session = new-pssession -computername 'serverName' -credential $cred 
 Invoke-Command -Session $session -ScriptBlock {copy-Item -Path $($args[0])  -destination $($args[1])} -argumentlist $_sourcepath,$_destinationPath ;

数据源如下，其他工作方法。只是删除方法不会填充任何参数。

        <asp:GridView ID="GridViewBands" runat="server" AutoGenerateColumns="False" DataSourceID="BandsDataSource" CellPadding="4" ForeColor="#333333" GridLines="None" ShowFooter="True" Width="1375px">
            <AlternatingRowStyle BackColor="White" />
            <Columns>
                <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
                <asp:TemplateField HeaderText="AgencyID" SortExpression="AgencyID">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server" Width="80px" Text='<%# Bind("AgencyID") %>' ReadOnly ="true"></asp:TextBox>
                        <asp:RequiredFieldValidator ControlToValidate="TextBox1" runat="server" ErrorMessage="there is an error?" Text="*`"></asp:RequiredFieldValidator>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:Button ID="Button1" runat="server" CommandName="Insert" Text="Add New Line" />
                        <asp:TextBox ID="newAgencyID" runat="server" Width="80px"></asp:TextBox>
                        <br />
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("AgencyID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="TypeID" SortExpression="TypeID">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox2" runat="server" Width="80px" Text='<%# Bind("TypeID") %>' ReadOnly ="true"></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newTypeID" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label2" runat="server" Width="80px" Text='<%# Bind("TypeID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="CompanyID" SortExpression="CompanyID">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox3" runat="server" Width="80px" Text='<%# Bind("CompanyID") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newCompanyID" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label3" runat="server" Text='<%# Bind("CompanyID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Office" SortExpression="Office">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox4" runat="server" Width="80px" Text='<%# Bind("Office") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newOffice" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label4" runat="server" Text='<%# Bind("Office") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="SequenceID" SortExpression="SequenceID" >
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox5" runat="server" Width="80px" Text='<%# Bind("SequenceID") %>' ReadOnly ="true"></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newSequenceID" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label5" runat="server" Text='<%# Bind("SequenceID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Minimmum" SortExpression="Minimmum">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox6" runat="server" Width="80px" Text='<%# Bind("Minimmum") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newMinimum" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label6" runat="server" Text='<%# Bind("Minimmum") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Capped" SortExpression="Capped">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox7" runat="server" Width="80px" Text='<%# Bind("Capped") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newCapped" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label7" runat="server" Text='<%# Bind("Capped") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="fixed" SortExpression="fixed">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox8" runat="server" Width="80px" Text='<%# Bind("fixed") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newFixed" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label8" runat="server" Text='<%# Bind("fixed") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Flat" SortExpression="Flat">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox9" runat="server" Width="80px" Text='<%# Bind("Flat") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newFlat" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label9" runat="server" Text='<%# Bind("Flat") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="SequenceLimit" SortExpression="SequenceLimit">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox10" runat="server" Width="80px" Text='<%# Bind("SequenceLimit") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newSequenceLimit" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label10" runat="server" Text='<%# Bind("SequenceLimit") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Rate" SortExpression="Rate">
                    <EditItemTemplate>
                        <asp:TextBox ID="TextBox11" runat="server" Width="80px" Text='<%# Bind("Rate") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newRate" runat="server" Width="80px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="Label11" runat="server" Text='<%# Bind("Rate") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="ActiveFrom" SortExpression="ActiveFrom">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtActiveFrom" runat="server" Width="200px" Text='<%# Bind("ActiveFrom") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newActiveFrom" runat="server" Width="200px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lblActiveFrom" runat="server" Text='<%# Bind("ActiveFrom") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="ActiveTo" SortExpression="ActiveTo">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtActiveTo" runat="server" Width="200px" Text='<%# Bind("ActiveTo") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <FooterTemplate>
                        <asp:TextBox ID="newActiveTo" runat="server" Width="200px"></asp:TextBox>
                    </FooterTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lblActiveTo" runat="server" Text='<%# Bind("ActiveTo") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                 <asp:TemplateField HeaderText="ID" SortExpression="ID">
                    <EditItemTemplate>
                        <asp:TextBox ID="txtID" runat="server" Width="80px" Text='<%# Bind("ID") %>'></asp:TextBox>
                    </EditItemTemplate>
                    <ItemTemplate>
                        <asp:Label ID="lblID" runat="server" Text='<%# Bind("ID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>

            <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
            <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" />
            <RowStyle BackColor="#FFFBD6" ForeColor="#333333" />
            <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" />
            <SortedAscendingCellStyle BackColor="#FDF5AC" />
            <SortedAscendingHeaderStyle BackColor="#4D0000" />
            <SortedDescendingCellStyle BackColor="#FCF6C0" />
            <SortedDescendingHeaderStyle BackColor="#820000" />

        </asp:GridView>

我尝试手动填充正在使用的参数类似于下面的内容，但是我无法找到基于＆＃39;选择＆＃39;来填充参数的方法。删除行。

        <asp:ObjectDataSource ID="BandsDataSource" runat="server" SelectMethod="SelectBands" TypeName="App_Code.Billing+BillingBand" UpdateMethod="UpdateBands" DeleteMethod="RemoveBand" InsertMethod="AddNewBand">
            <SelectParameters>
                <asp:Parameter Name ="AgencyID" Type ="Int64" />
            </SelectParameters>
            <DeleteParameters>
                <asp:Parameter Name="AgencyID" Type="Object" />
                <asp:Parameter Name="TypeID" Type="Object" />
                <asp:Parameter Name="CompanyID" Type="Object" />
                <asp:Parameter Name="Office" Type="Object" />
                <asp:Parameter Name="SequenceID" Type="Object" />
                <asp:Parameter Name="Minimmum" Type="Object" />
                <asp:Parameter Name="Capped" Type="Object" />
                <asp:Parameter Name="fixed" Type="Object" />
                <asp:Parameter Name="Flat" Type="Object" />
                <asp:Parameter Name="SequenceLimit" Type="Object" />
                <asp:Parameter Name="Rate" Type="Object" />
                <asp:Parameter Name="ActiveFrom" Type="Object" />
                <asp:Parameter Name="ActiveTo" Type="Object" />
                <asp:Parameter Name="ID" Type="Object" />
            </DeleteParameters>
            <InsertParameters>
                <asp:Parameter Name="AgencyID" Type="Object" />
                <asp:Parameter Name="TypeID" Type="Object" />
                <asp:Parameter Name="CompanyID" Type="Object" />
                <asp:Parameter Name="Office" Type="Object" />
                <asp:Parameter Name="SequenceID" Type="Object" />
                <asp:Parameter Name="Minimmum" Type="Object" />
                <asp:Parameter Name="Capped" Type="Object" />
                <asp:Parameter Name="fixed" Type="Object" />
                <asp:Parameter Name="Flat" Type="Object" />
                <asp:Parameter Name="SequenceLimit" Type="Object" />
                <asp:Parameter Name="Rate" Type="Object" />
                <asp:Parameter Name="ActiveFrom" Type="Object" />
                <asp:Parameter Name="ActiveTo" Type="Object" />
                <asp:Parameter Name="ID" Type="Object" />
            </InsertParameters>
            <UpdateParameters>
                <asp:Parameter Name="AgencyID" Type="Object"/>
                <asp:Parameter Name="TypeID" Type="Object" />
                <asp:Parameter Name="CompanyID" Type="Object" />
                <asp:Parameter Name="Office" Type="Object" />
                <asp:Parameter Name="SequenceID" Type="Object" />
                <asp:Parameter Name="Minimmum" Type="Object" />
                <asp:Parameter Name="Capped" Type="Object" />
                <asp:Parameter Name="fixed" Type="Object" />
                <asp:Parameter Name="Flat" Type="Object" />
                <asp:Parameter Name="SequenceLimit" Type="Object" />
                <asp:Parameter Name="Rate" Type="Object" />
                <asp:Parameter Name="ActiveFrom" Type="Object" />
                <asp:Parameter Name="ActiveTo" Type="Object" />
                <asp:Parameter Name="ID" Type="Object" />
            </UpdateParameters>
        </asp:ObjectDataSource>

但是这会返回一个NULL引用异常。

这是删除方法，例如，update和add方法格式相同，并且工作正常。

Protected Sub BandsDataSource_Deleting(sender As Object, e As ObjectDataSourceMethodEventArgs) Handles BandsDataSource.Deleting
    e.InputParameters("ID") = GridViewBands.SelectedRow.ID.ToString()
End Sub

Answer 1

必须在GridView中添加onRowDeleting参数，该参数必须设置用于删除的变量的默认值。

    <asp:GridView ID="GridViewBands" runat="server" AutoGenerateColumns="False" DataSourceID="BandsDataSource" OnRowDeleting="test" CellPadding="4" ForeColor="#333333" GridLines="None" ShowFooter="True" Width="1375px">
            <AlternatingRowStyle BackColor="White" />
            <Columns>

Protected Sub test(sender As Object, e As GridViewDeleteEventArgs)
    Dim thisID As Integer = e.Values(13)
    BandsDataSource.DeleteParameters("ID").DefaultValue = thisID
    BandsDataSource.Delete()
    BandsDataSource.DataBind()
    BandsDataSource.Dispose()
End Sub

从GridView中删除绑定到调用方法的对象

1 个答案: