选择参数中的默认值为DateTime.Now

Question

I'm trying set default value of select parameter in MVC:

<asp:Parameter Name="PickDate" Type="DateTime"  DefaultValue="<%: DateTime.Now.ToString("yyyy-MM-dd")%>" />

But it doesn't work... I got error":

String was not recognized as a valid DateTime.

Can I set DateTime.Now to default value?

Edit1: Still doesn't work...

  <asp:SqlDataSource ID="SqlDataSourceDailyPickingList" runat="server" 
    ConnectionString="<%$ ConnectionStrings:ConnectionString %>" 
    ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>" 
    SelectCommand="SELECT * FROM DailyPickingList where PickDate = @PickDate">
     <SelectParameters>
      <asp:Parameter Name="PickDate" Type="DateTime"  DefaultValue="<%: DateTime.Now%>" />
    </SelectParameters>

</asp:SqlDataSource>

Is it at all possible ?

Answer 1

You are casting to string the default value when explicitly setting the type as DateTime. Try this:

<asp:Parameter Name="PickDate" Type="DateTime"  DefaultValue="<%: DateTime.Now%>" />

Or this

<asp:Parameter Name="PickDate" Type="string"  DefaultValue='<%: DateTime.Now.ToString("yyyy-MM-dd")%>' />