Question

我遇到了GridView和DataSet的问题，其中update命令似乎在尝试向SQL查询添加太多参数。我已经搜索了谷歌和StackOverflow以寻找潜在的修复方法，但似乎空手而归。

一切都很完美，直到我在进行必要的编辑后点击GridView上的Update链接。当我按下更新按钮时，我遇到以下错误：

ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'Update' that has parameters: p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, siteID, serialNumber, installDate, testDate, lastAlarmDate, alarmState, sensorType, sensorLocation, squelched, emsNotified, original_sensorID.

我已经验证了DataSet生成的Update语句，它反映如下：

UPDATE sensors SET siteID = @p1, serialNumber = @p2, installDate = @p3, testDate = @p4, lastAlarmDate = @p5, alarmState = @p6, sensorType = @p7, sensorLocation = @p8, squelched = @p9, emsNotified = @p10 WHERE (sensorID = @p11)

似乎有额外的数据附加到更新字符串的末尾，我无法找到附加这些附加变量的位置。非常感谢任何帮助。

感谢。

GridView标记

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="sensorID" DataSourceID="ObjectDataSource1" ForeColor="#333333" GridLines="None">
            <AlternatingRowStyle BackColor="White" />
            <Columns>
                <asp:BoundField DataField="sensorID" HeaderText="sensorID" InsertVisible="False" ReadOnly="True" SortExpression="sensorID" />
                <asp:BoundField DataField="siteID" HeaderText="siteID" SortExpression="siteID" />
                <asp:BoundField DataField="serialNumber" HeaderText="serialNumber" SortExpression="serialNumber" />
                <asp:BoundField DataField="installDate" HeaderText="installDate" SortExpression="installDate" />
                <asp:BoundField DataField="testDate" HeaderText="testDate" SortExpression="testDate" />
                <asp:BoundField DataField="lastAlarmDate" HeaderText="lastAlarmDate" SortExpression="lastAlarmDate" />
                <asp:BoundField DataField="alarmState" HeaderText="alarmState" SortExpression="alarmState" />
                <asp:BoundField DataField="sensorType" HeaderText="sensorType" SortExpression="sensorType" />
                <asp:BoundField DataField="sensorLocation" HeaderText="sensorLocation" SortExpression="sensorLocation" />
                <asp:BoundField DataField="squelched" HeaderText="squelched" SortExpression="squelched" />
                <asp:BoundField DataField="emsNotified" HeaderText="emsNotified" SortExpression="emsNotified" />
                <asp:CommandField ShowEditButton="True" />
            </Columns>
            <EditRowStyle BackColor="#2461BF" />
            <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
            <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
            <RowStyle BackColor="#EFF3FB" />
            <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
            <SortedAscendingCellStyle BackColor="#F5F7FB" />
            <SortedAscendingHeaderStyle BackColor="#6D95E1" />
            <SortedDescendingCellStyle BackColor="#E9EBEF" />
            <SortedDescendingHeaderStyle BackColor="#4870BE" />
        </asp:GridView>

ObjectDataSource标记

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" DeleteMethod="Delete" InsertMethod="Insert" OldValuesParameterFormatString="original_{0}" SelectMethod="GetData" TypeName="DataSetTableAdapters.sitesTableAdapter" UpdateMethod="Update" OnSelecting="ObjectDataSource1_Selecting">
            <DeleteParameters>
                <asp:Parameter Name="p1" Type="Int32" />
            </DeleteParameters>
            <InsertParameters>
                <asp:Parameter Name="p1" Type="String" />
                <asp:Parameter Name="p2" Type="String" />
            </InsertParameters>
            <UpdateParameters>
                <asp:Parameter Name="p1" Type="String" />
                <asp:Parameter Name="p2" Type="String" />
                <asp:Parameter Name="p3" Type="Int32" />
            </UpdateParameters>
        </asp:ObjectDataSource>

编辑：Verbiage。编辑2：标记。编辑3：附加标记。

Answer 1

根据更新数据源的SQL查询语句，它有11个参数（10个SET参数和1个WHERE子句参数）：

UPDATE sensors SET siteID = @p1, serialNumber = @p2, installDate = @p3, 
                   testDate = @p4, lastAlarmDate = @p5, alarmState = @p6, 
                   sensorType = @p7, sensorLocation = @p8, squelched = @p9, emsNotified = @p10 
               WHERE (sensorID = @p11)

但是在UpdateParameters中你只声明了3个参数，你应该知道ObjectDataSource要求CRUD参数的数量与上面查询语句中声明的参数完全匹配（也使用相同的参数名称），因此您需要调整查询参数的数量，如下所示：

<UpdateParameters>
    <asp:Parameter Name="p1" Type="String" />
    <asp:Parameter Name="p2" Type="String" />
    <asp:Parameter Name="p3" Type="DateTime" />
    <asp:Parameter Name="p4" Type="DateTime" />
    <%-- other required parameters --%>
    <asp:Parameter Name="p11" Type="Int32" />
</UpdateParameters>

其次，我发现异常需要original_sensorID，它反映了属性OldValuesParameterFormatString="original_{0}"的用法。尝试替换下面给出的旧值参数格式字符串，或者只删除该属性：

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
                      OldValuesParameterFormatString="{0}" ...>
</asp:ObjectDataSource>

旁注：

确保此属性TypeName="DataSetTableAdapters.sitesTableAdapter"设置为数据源的正确完全限定类型名称。

其他参考资料：

GridView with ObjectDataSource Example: Insert, Edit, Update

could not find a non-generic method 'Delete' that has parameters

ObjectDataSource could not find a non-generic method that has parameters when using update and delete

ASP.Net MySql非泛型方法＆＃39; UpdateQuery＆＃39;

1 个答案: