C# EntityDataSource筛选

这有点痛苦，我觉得这应该很容易

我有一个EntityDataSource：

<asp:EntityDataSource ID="TaskDataSource" runat="server" ConnectionString="name=ScheduleEntities" DefaultContainerName="ScheduleEntities" EnableFlattening="False" EntitySetName="TaskItems" EnableInsert="True" EnableUpdate="True" OrderBy="it.Duration" Where="it.deleted = False">

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我不能让它只显示未删除的结果。OrderBy工作正常，一切正常……我只是无法将其过滤。

您需要在EntityDataSource中将AutoGenerateWhereClause属性设置为true

<asp:EntityDataSource ID="TaskDataSource" runat="server" ConnectionString="name=ScheduleEntities" DefaultContainerName="ScheduleEntities" EnableFlattening="False" EntitySetName="TaskItems" EnableInsert="True" EnableUpdate="True" OrderBy="it.Duration" Where="it.deleted = False" AutoGenerateWhereClause="true">

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我通过在UI中创建一个带有过滤器的linqDataSource并采用过滤器格式来实现它，下面是代码：

<asp:EntityDataSource ID="TaskDataSource" runat="server" ConnectionString="name=ScheduleEntities" DefaultContainerName="ScheduleEntities" EnableFlattening="False" EntitySetName="TaskItems" EnableInsert="True" EnableUpdate="True" OrderBy="" Where="deleted == @deleted">
    <WhereParameters>
        <asp:Parameter DefaultValue="False" Name="deleted" Type="Boolean" />
    </WhereParameters>
</asp:EntityDataSource>

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这是逐字记录吗？it.deleted可能需要是it.DeletedVerbatim。数据库中的列已被删除，我已尝试了这两种方法。将False更改为False，然后查看结果。没有骰子，这也不起作用，使用deleted或delete，您可以根据需要对实体数据源的QueryCreated事件进行筛选

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    var editItem = e.Item as GridEditFormItem;
    if (e.Item is GridDataItem && !e.Item.IsInEditMode)
    {
        GridDataItem item = (GridDataItem)e.Item;
        bool success,deleted;
        bool.TryParse(item["deleted"].Text, out success);
        if (success)
        {
            deleted = bool.Parse(item["deleted"].Text);
            if (deleted)
            {
                item.Display = false;
            }
        }
    }
}