每次调用我的更新功能时,我都会遇到问题, 我相信问题的根源是因为这个函数得到了对象参数, 并且从一个不同的源头得到一个参数,我现在不是这样做的。
这是错误: http://prntscr.com/2z0cd6
GridView代码:
<asp:GridView ID="gvAnimals" runat="server" AutoGenerateColumns="False" CellPadding="4" DataSourceID="ObjectDataSourceAnimals" ForeColor="#333333" GridLines="None" DataKeyNames="animalId">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
<asp:BoundField DataField="animalId" HeaderText="animalId" SortExpression="animalId" />
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:CheckBoxField DataField="vertebrates" HeaderText="vertebrates" SortExpression="vertebrates" />
<asp:CheckBoxField DataField="vegetarian" HeaderText="vegetarian" SortExpression="vegetarian" />
<asp:CheckBoxField DataField="terrestrial" HeaderText="terrestrial" SortExpression="terrestrial" />
<asp:BoundField DataField="kind" HeaderText="kind" SortExpression="kind" />
<asp:BoundField DataField="avgWeight" HeaderText="avgWeight" SortExpression="avgWeight" />
<asp:BoundField DataField="avgHeight" HeaderText="avgHeight" SortExpression="avgHeight" />
<asp:BoundField DataField="infoAdress" HeaderText="infoAdress" SortExpression="infoAdress" />
<asp:BoundField DataField="imageAdress" HeaderText="imageAdress" SortExpression="imageAdress" />
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
<asp:ObjectDataSource ID="ObjectDataSourceAnimals" runat="server" DeleteMethod="DeleteAnimal" OldValuesParameterFormatString="original_{0}" SelectMethod="GetAllAnimals" TypeName="BLProject.Animal" UpdateMethod="UpdateAnimal" DataObjectTypeName="BLProject.Animal">
<DeleteParameters>
<asp:Parameter Name="a" Type="Object" />
<asp:SessionParameter Name="newsAdress" SessionField="Adress" Type="String" />
</DeleteParameters>
<SelectParameters>
<asp:ControlParameter ControlID="textSearch" Name="Search" PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="dropdownlistAnimalToSearch" Name="type" PropertyName="SelectedValue" Type="String" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="a" Type="Object" />
<asp:SessionParameter DefaultValue="D:\\project\\Ilan Project 29-11\\Web\\NewsInfo" Name="newsAdress" SessionField="Adress" Type="String" />
</UpdateParameters>
</asp:ObjectDataSource>
*我相信错误的来源是粗线
更新功能:
[DataObjectMethod(DataObjectMethodType.Update)]
public static int UpdateAnimal(Animal a, string newsAdress)
Animal a是网格视图使用select函数获取的对象参数, 但是地址是会话源的另一个参数,功能也是如此。 但是,由于我添加了这个参数,因此我遇到了这个新错误。
感谢。
答案 0 :(得分:1)
你可以这样做:
使用此方法更改您的方法
public void UpdateAnimal(int animalId, string name, bool vertebrates, bool vegetarian, string newsAdress)
{
}
和你的ObjectDataSource
<asp:ObjectDataSource ID="ObjectDataSourceAnimals" runat="server" DeleteMethod="DeleteAnimal" SelectMethod="GetAllAnimals" TypeName="BLProject.Animal" UpdateMethod="UpdateAnimal">
<DeleteParameters>
<asp:Parameter Name="a" Type="Object" />
<asp:SessionParameter Name="newsAdress" SessionField="Adress" Type="String" />
</DeleteParameters>
<SelectParameters>
<asp:ControlParameter ControlID="textSearch" Name="Search" PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="dropdownlistAnimalToSearch" Name="type" PropertyName="SelectedValue" Type="String" />
</SelectParameters>
<UpdateParameters>
<asp:Parameter Name="animalId" Type="Int32"/>
.......the other fields from Animal that you want to update
<asp:Parameter Name="name" Type="String"/>
<asp:Parameter Name="vegetarian" Type="Boolean"/>
<asp:Parameter Name="vertebrates" Type="Boolean"/>
<asp:SessionParameter DefaultValue="D:\\project\\Ilan Project 29-11\\Web\\NewsInfo" Name="newsAdress" SessionField="Adress" Type="String" />
</UpdateParameters>
</asp:ObjectDataSource>
似乎在使用DataObjectTypeName
时无法添加参数。解决方案是发送作为参数编辑的Animal
行的部分或全部属性以及其他参数。
如果您想使用OldValuesParameterFormatString="original_{0}"
,请将此int original_animalid
添加到方法输入参数中。