protected void Button1_Click(object sender, EventArgs e)
{
//DlstItemList.DataSourceID = "ObjdsDatalist";
DlstItemList.DataBind();
}
<asp:DataList ID="DlstItemList" runat="server" DataSourceID="ObjdsDatalist"
onitemdatabound="DlstItemList_ItemDataBound">
<ItemTemplate>
<asp:Label ID="LblLabID" runat="server" Text='<%# Eval("LabID") %>' Visible="False"
></asp:Label>
<asp:Label ID="LblLabName" runat="server" Text='<%# Eval("LabName") %>' Visible="False"
></asp:Label>
<asp:ObjectDataSource ID="ObjdsItem" runat="server"
SelectMethod="GetItemInOneLab" TypeName="StudentReservation">
<SelectParameters>
<asp:ControlParameter ControlID="CourseDropDownList" Name="strTeachTaskNo"
PropertyName="SelectedValue" Type="String" />
<asp:ControlParameter ControlID="LblLabID" Name="strLabID" PropertyName="Text"
Type="String" />
<asp:SessionParameter Name="strUserName" SessionField="UserID" Type="String" />
</SelectParameters>
</asp:ObjectDataSource>
<asp:Panel ID="PnlItem" runat="server" GroupingText="lab">
<asp:GridView ID="GrwItem" runat="server" AutoGenerateColumns="False"
CellPadding="5" ondatabound="GrwItem_DataBound" DataSourceID="ObjdsItem"
onrowdatabound="GrwItem_RowDataBound" onrowcommand="GrwItem_RowCommand">
<Columns>
<asp:BoundField DataField="ItemID" HeaderText="ItemID" InsertVisible="False"
SortExpression="ItemID">
<FooterStyle CssClass="hidden" />
<HeaderStyle CssClass="hidden" />
<ItemStyle CssClass="hidden" />
</asp:BoundField>
<asp:BoundField DataField="courseName" HeaderText="课程" >
<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
<ItemStyle Wrap="False" />
</asp:BoundField>
<asp:BoundField DataField="ItemName" HeaderText="实验项目" SortExpression="ItemName">
<HeaderStyle HorizontalAlign="Center" Wrap="False" />
<ItemStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" />
</asp:BoundField>
<asp:TemplateField HeaderText="是否预约">
<ItemTemplate>
<asp:Label ID="IsReserved" runat="server"></asp:Label>
<asp:Button ID="IWantReserve" runat="server" CommandName="IWantReserve"
Text = "我要预约" onclick="IWantReserve_Click" />
<asp:Button ID="btnCancel" runat="server" CommandName="CancelCmd" Text="取消预约" />
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" Wrap="False" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Wrap="False" />
</asp:TemplateField>
<asp:TemplateField HeaderText="时间地点">
<ItemTemplate>
<asp:Label ID="lblTimePlace" runat="server" Text="lblTimePlace"></asp:Label>
<asp:DataList ID="dlArr" runat="server" RepeatColumns="1"
RepeatDirection="Horizontal">
<ItemTemplate>
<%-- <asp:Label ID="LabelLab" runat="server" Text='<%# Eval("Lab") %>'></asp:Label>--%>
<asp:Label ID="lblPlace" runat="server" Text='<%# Eval("Place") %>'></asp:Label>
<asp:Label ID="lblTime" runat="server" Text='<%# Eval("Time") %>'></asp:Label>
</ItemTemplate>
<ItemStyle HorizontalAlign="Left" VerticalAlign="Middle" Wrap="False" />
</asp:DataList>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" Wrap="False" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Wrap="False" />
</asp:TemplateField>
<asp:TemplateField HeaderText="是否完成">
<ItemTemplate>
<asp:Label ID="lblIsCompleted" runat="server"></asp:Label>
</ItemTemplate>
<HeaderStyle HorizontalAlign="Center" Wrap="False" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Wrap="False" />
</asp:TemplateField>
<asp:TemplateField HeaderText="提前几天可以取消预约">
<ItemTemplate>
<asp:Label ID="Label1" runat="server"></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</EditItemTemplate>
<HeaderStyle HorizontalAlign="Center" Wrap="False" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
</asp:TemplateField>
<asp:BoundField DataField="TeachTaskNO" HeaderText="TeachTaskNO"
SortExpression="TeachTaskNO">
<FooterStyle CssClass="hidden" />
<HeaderStyle CssClass="hidden" />
<ItemStyle CssClass="hidden" />
</asp:BoundField>
</Columns>
<HeaderStyle BackColor="#006699" Height="20px" BorderColor="#999966"
BorderWidth="1px" ForeColor="White" />
</asp:GridView>
</asp:Panel>
</ItemTemplate>
</asp:DataList>
<asp:ObjectDataSource ID="ObjdsDatalist" runat="server"
SelectMethod="GetLabofCourse" TypeName="StudentReservation">
<SelectParameters>
<asp:ControlParameter ControlID="CourseDropDownList" Name="strTeachTaskNo"
PropertyName="SelectedValue" Type="String" />
<asp:SessionParameter Name="strUserName" SessionField="UserID" Type="String" />
</SelectParameters>
</asp:ObjectDataSource>
ObjectDataSource 控件“ObjdsItem”没有命名容器。确保在调用 DataBind 前将控件添加到该页中。
