Question

我正在尝试从Gridview中删除一条记录，并且收到一条InvalidCastException，消息为“从字符串“ RefYear”转换为'Integer'类型无效。我也在使用数据键。

相关列的Gridview代码部分

                            <asp:TemplateField HeaderText="Ref. Year" SortExpression="ReferenceYear" ItemStyle-HorizontalAlign="Center">
                                <ItemTemplate>
                                    <asp:Label ID="Label1" runat="server" Text='<%# Bind("RefYear") %>' />
                                </ItemTemplate>
                                <EditItemTemplate>
                                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("RefYear") %>'></asp:Label>
                                </EditItemTemplate>
                                <FooterTemplate>
                                    <asp:Button ID="btnInsertRecord" runat="server" CommandName="Insert" Text="Insert Record"
                                        ValidationGroup="Insert" CssClass="buttonBlue" />
                                </FooterTemplate>
                            </asp:TemplateField>

隐藏代码

Protected Friend Sub dgvBusinessCompetitions_RowDeleting(ByVal sender As Object, ByVal e As GridViewDeleteEventArgs) Handles dgvBusinessCompetitions.RowDeleting

    ' Read the keys from data keys
    Dim _rewardDescription As String = dgvBusinessCompetitions.DataKeys(e.RowIndex)("RewardDescription")
    Dim _referenceYear As Integer = dgvBusinessCompetitions.DataKeyNames(1)

    Eurolife.Applications.ProductionEngine.BusinessAccess.BusinessCompetitionBusinessAccess.DeleteBusinessCompetitionReward(_rewardDescription,
                                                                                                                            _referenceYear,
                                                                                                                            _groupType)

    InformationBox.ShowSuccessMessage("Record deleted successfully.")
    loadBusinessCompetitionsConditions()
End Sub

存储过程

ALTER PROCEDURE [dbo].[my_procedure] 

    @rewardDescription VARCHAR(100),
    @groupType VARCHAR (50),
    @refYear INT 
AS
BEGIN
    DELETE FROM myTable
    WHERE RewardDescription = @rewardDescription
    AND GroupType = @groupType
    AND RefYear = @refYear
END

我需要做的是，单击删除后，我需要在存储过程显示时删除带有X奖励说明，X组类型和X RefYear的特定记录。

我尝试过转换RefYear，但是没有用。

有什么想法吗？

Answer 1

已更改

Dim _referenceYear As Integer = dgvBusinessCompetitions.DataKeyNames(1)

收件人

Dim _referenceYear As Integer = dgvBusinessCompetitions.DataKeys(e.RowIndex)("RefYear")

从Gridview记录不删除

1 个答案: