C# 通过ObjectDataSource将ListItemCollection传递给自定义适配器时出错

我有一个

ObjectDataSource

声明如下：

<asp:ObjectDataSource ID="PaymentsDataSource"
                      runat="server"
                      DataObjectTypeName="Payment"
                      TypeName="PaymentAdapter"
                      SelectMethod="GetPayments">
    <SelectParameters>
        <asp:ControlParameter ControlID="StartDate"
                              PropertyName="Text"
                              Name="startDate"
                              Type="DateTime" />
        <asp:ControlParameter ControlID="EndDate"
                              PropertyName="Text"
                              Name="endDate"
                              Type="DateTime" />
        <asp:ControlParameter ControlID="LocationCodes"
                              PropertyName="Items"
                              Name="selectedLocationCodes"
                              Type="Object" />
    </SelectParameters>
</asp:ObjectDataSource>

<select id="LocationCodes"
        disabled="disabled"
        runat="server"
        class="chzn-container"
        multiple=""
        data-placeholder="Choose a Location Code(s)"
        style="width: 100%;"
        data-class="span10">
</select>

[DataObjectMethod(DataObjectMethodType.Select, true)]
public List<Payment> GetPayments(
    DateTime startDate,
    DateTime endDate,
    object selectedLocationCodes)
{
}

适配器上的服务器端

Select

方法定义如下：

<asp:ObjectDataSource ID="PaymentsDataSource"
                      runat="server"
                      DataObjectTypeName="Payment"
                      TypeName="PaymentAdapter"
                      SelectMethod="GetPayments">
    <SelectParameters>
        <asp:ControlParameter ControlID="StartDate"
                              PropertyName="Text"
                              Name="startDate"
                              Type="DateTime" />
        <asp:ControlParameter ControlID="EndDate"
                              PropertyName="Text"
                              Name="endDate"
                              Type="DateTime" />
        <asp:ControlParameter ControlID="LocationCodes"
                              PropertyName="Items"
                              Name="selectedLocationCodes"
                              Type="Object" />
    </SelectParameters>
</asp:ObjectDataSource>

<select id="LocationCodes"
        disabled="disabled"
        runat="server"
        class="chzn-container"
        multiple=""
        data-placeholder="Choose a Location Code(s)"
        style="width: 100%;"
        data-class="span10">
</select>

[DataObjectMethod(DataObjectMethodType.Select, true)]
public List<Payment> GetPayments(
    DateTime startDate,
    DateTime endDate,
    object selectedLocationCodes)
{
}

---

好的，我解决这个问题的方法是通过在

ObjectDataSource

元素上关闭

ViewState

来添加这个

ViewStateMode=“Disabled”

问题是无法序列化对象。如果你要改变 “object selectedLocationCodes”指向某种预定义类，则应该没有问题。 为了序列化对象，基本上需要将其分解为XML，这意味着它需要知道每个字段的数据类型。对象的描述不够具体，因为它可以是任何对象