Question

我正在尝试使用Gridview中使用的下拉列表来保存数量。我有<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="Edit" Text="Change"></asp:LinkButton>将gridview列更改为dropdownlist，然后将保存链接按钮<asp:LinkButton ID="lnkUpdate" runat="server" CommandName="Update" Text="Save" ></asp:LinkButton>更改为gridview列。
当我点击chnage时它会显示下拉列表，我可以选择所需的数字但是当我点击保存时它会恢复到默认状态; 1。我尝试使用OnSelectIndexChange但是断点不会去那里。我也尝试使用AutoPostBack="False"和EnableViewState="false"但没有用。我是我的标记：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="slno" ForeColor="#333333" GridLines="None" HorizontalAlign="Center" Width="100%" OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowUpdating="GridView1_RowUpdating">
     <RowStyle HorizontalAlign="Center" VerticalAlign="Middle" BackColor="#F7F6F3" ForeColor="#333333" />
      <Columns>
      <asp:BoundField DataField="slno" HeaderText="Sl No" ReadOnly="true">
         <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
           <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
      </asp:BoundField>
      <asp:BoundField DataField="itemname" HeaderText="Item Name" ReadOnly="true">
         <HeaderStyle HorizontalAlign="Left" VerticalAlign="Middle" />
           <ItemStyle HorizontalAlign="Left" VerticalAlign="Middle" />
      </asp:BoundField>
     <asp:BoundField DataField="Rate" HeaderText="Price" ReadOnly="true">
         <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
           <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
     </asp:BoundField>
  <asp:TemplateField HeaderStyle-CssClass="headerStyle" HeaderText="Quantity">
     <EditItemTemplate>
         <asp:DropDownList ID="ddlqty" runat="server" DataTextField='<%# Bind("qty") %>' AutoPostBack="false" EnableViewState="true">

             <asp:ListItem>1</asp:ListItem>

             <asp:ListItem>2</asp:ListItem>

             <asp:ListItem>3</asp:ListItem>

             <asp:ListItem>4</asp:ListItem>

             <asp:ListItem>5</asp:ListItem>
                                                                                                                 </asp:DropDownList>
   </EditItemTemplate>

   <ItemTemplate>
     <asp:Label ID="lblqty" runat="server" Text='<%# Bind("qty") %>'></asp:Label>
   </ItemTemplate>

   <HeaderStyle CssClass="headerStyle" HorizontalAlign="Center" VerticalAlign="Middle" />
     <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
</asp:TemplateField>
   <asp:TemplateField HeaderStyle-CssClass="headerStyle">
                                                <EditItemTemplate>
                                                    <asp:LinkButton ID="lnkUpdate" runat="server" CommandName="Update" Text="Save" ></asp:LinkButton>
                                                <%--<asp:LinkButton ID="lnkCancel" runat="server" CommandName="Cancel" Text="Cancel"></asp:LinkButton>--%>
                                            </EditItemTemplate>
                                            <ItemTemplate>
                                                <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="false" CommandName="Edit" Text="Change"></asp:LinkButton>
                                            </ItemTemplate>
                                            <HeaderStyle CssClass="headerStyle" />
                                            <ItemStyle HorizontalAlign="Center" Width="30px" Font-Size="Small" />
                                        </asp:TemplateField>
                                        <asp:BoundField DataField="total" HeaderText="Total" ReadOnly="true">
                                            <HeaderStyle HorizontalAlign="Right" VerticalAlign="Middle" />
                                            <ItemStyle HorizontalAlign="Right" VerticalAlign="Middle" />
                                        </asp:BoundField>
                                    </Columns>
                                    <EditRowStyle HorizontalAlign="Center" VerticalAlign="Middle" BackColor="#999999" />
                                    <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                                    <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                                    <SelectedRowStyle BackColor="#E2DED6" ForeColor="#333333" Font-Bold="True" />
                                    <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" HorizontalAlign="Center" VerticalAlign="Middle" ForeColor="White" />
                                    <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                                    <SortedAscendingCellStyle BackColor="#E9E7E2" />
                                    <SortedAscendingHeaderStyle BackColor="#506C8C" />
                                    <SortedDescendingCellStyle BackColor="#FFFDF8" />
                                    <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
                                </asp:GridView>

我正在使用朋友使用的代码，它在他的项目中工作正常。所以请帮助我在这里失踪。

Answer 1

尝试使用EnableViewState="true"可行吗

链接按钮单击后，下拉列表不保持值

1 个答案: