“DropDownList1”有一个无效 SelectedValue
提示错误：“DropDownList1”有一个无效 SelectedValue
代码：
<asp:TemplateField HeaderText= "unit " SortExpression= "unit ">
<EditItemTemplate>
<asp:DropDownList ID= "DropDownList1 " runat= "server " SelectedValue= ' <%# Bind( "unit ") %> '
Width= "75px " ">
<asp:ListItem Value= "PCS " Selected=True > PCS </asp:ListItem>
<asp:ListItem Value= "DZ " > DZ </asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID= "Label1 " runat= "server " Text= ' <%# Bind( "unit ") %> '> </asp:Label>
</ItemTemplate>
</asp:TemplateField>
[解决办法]
<asp:DropDownList ID= "DropDownList1 " runat= "server " SelectedValue= ' <%# Bind( "unit ") %> '
Width= "75px " ">
<asp:ListItem Value= "PCS " Selected=True > PCS </asp:ListItem
？？？？？！！！！！！！！！！！！！！
