如何在datalist中找到项目的索引 [英] how to find index of item's in datalist
问题描述
我有一个数据列表我想找出其中book_id == 73
的单元格的索引值，并希望在dt单元格中显示一些标签文本
this是我的datalist
< asp：DataList ID = dl_cartitems runat = server
onitemcommand = dl_cartitems_ItemCommand >
< ItemTemplate >
< <温泉n class =code-leadattribute> tr bgcolor = ＃FFFFFF class = product-detail >
< td width = < span class =code-keyword> 14％ valign = top > < img src =' <％＃ book_image / + Eval（ 图像）％>' width = 128px 样式 = margin-top：10px; margin-right：10px; margin-left：10px; margin-bottom：10px / > < / td >
< td width = 43％ valign = top style = padding-removed10px > Khalid Hosseini的风筝跑者< br / > < asp：Label ID = discount_message runat = 服务器 > < / asp：标签 > < / td >
< td width = 6％ align = < span class =code-keyword> center valign = top style = padding-removed10px > < a href = ＃ > 编辑< / a > < / td >
< td width = 10％ align = center valign < span class =code-keyword> = top 样式 = padding-removed10px > $ < asp：Label ID = lbl_parprice runat = server 正文 =' <％ #Eval（ 价格）％>' > < / asp：Label > < / td >
< td width = 10％ align = center valign = top style = padding-removed10px >
< asp：DropDownList ID = ddl_quantity runat = server 宽度 = 60px OnSelectedIndexChanged = ddl_quantity_selectedindexchanged AutoPostBack = < span class =code-keyword> true >
< span class =code-keyword>< asp：ListItem > 1 < span class =code-keyword>< / asp：ListItem >
< asp：ListItem > 2 < / asp：ListItem >
< / asp：DropDownList > < / td >
< td width = 12％ align = center valign = top style = padding-removed10px > $ < asp：Label < span class =code-attribute> ID = lbl_subtoprice runat = server 文字 =' <％ #Eval（ 价格）％>' > < / asp：Label > < / td >
< td width = 5％ align = center valign = top < span class =code-attribute> style = padding-removed10px > < asp：ImageButton ID = imgbtn_del ImageUrl = < span class =code-keyword>〜/ images / del.jpg runat = server CommandName = 删除 CommandArgument =' <％ #Eval（ id） ％>' > < / asp：ImageButton > < / td >
< / tr >
< / ItemTemplate >
< span class =code-keyword>< / asp：DataList >
这是我的datalist现在我想找到book_id为73的单元格，并希望在该单元格的标签中显示一些文本
以下代码< pre lang =HTML> < asp：标签 ID = discount_message runat = server > < / asp：Label >
感谢
< asp：标签 ID = lbl_parprice runat = 服务器 文字 =' <％ #Eval（ 价格）％>' > < / asp：标签 > < / td >
< td 宽度 = 10％ align = center < span class =code-attribute> valign = top style = padding-removed10px >
< asp：DropDownList ID = ddl_quantity runat = server < span class =code-attribute> 宽度 = 60px OnSelectedIndexChanged = ddl_quantity_selectedind交换 AutoPostBack = true >
< asp：ListItem > 1 < / asp：ListItem >
< asp：ListItem > 2 < / asp：ListItem > ;
< / asp：DropDownList > < / td >
< td 宽度 = 12％ align = center valign = top style = padding-removed10px >
< blockquote> < asp：Label ID = lbl_subtoprice runat = server 文字 < span class =code-keyword> =' <％ #Eval（ 价格）％>' < span class =code-keyword>> < / asp：Label < span class =code-keyword>> < / td >
< td width = 5％ align < span class =code-keyword> = center valign = top 样式 = padding-removed10px > < asp：ImageButton ID = imgbtn_del ImageUrl = 〜/ images / del.jpg runat = 服务器 CommandName = 删除 CommandArgument =' <％ #Eval（ id）％> ' > < / asp：ImageButton > < / td >
< / tr >
< / ItemTemplate >
< span class =code-keyword>< / asp：DataList >
这是我的datalist现在我想找到book_id为73的单元格，并希望在该单元格的标签中显示一些文本
以下代码< pre lang =HTML> < asp：标签 ID = discount_message runat = server > < / asp：Label >
谢谢
尝试使用数据行绑定事件。绑定每一行后触发，然后您可以使用变量来存储索引号。
i have a datalist i want to find out index value of the cell in which book_id==73
and want to show some labels text in dt cell
this is my datalist
<asp:DataList ID="dl_cartitems" runat="server"
onitemcommand="dl_cartitems_ItemCommand">
<ItemTemplate>
<tr bgcolor="#FFFFFF" class=" product-detail" >
<td width="14%" valign="top"> <img src='<%#"book_image/"+ Eval("Image") %>' width="128px" style="margin-top:10px;margin-right:10px;margin-left:10px;margin-bottom:10px" /></td>
<td width="43%" valign="top" style="padding-removed10px">The Kite Runner by Khalid Hosseini <br /> <asp:Label ID="discount_message" runat="server"></asp:Label> </td>
<td width="6%" align="center" valign="top" style="padding-removed10px"><a href="#">Edit</a></td>
<td width="10%" align="center" valign="top" style="padding-removed10px"> $<asp:Label ID="lbl_parprice" runat="server" Text='<%#Eval("Price") %>'></asp:Label></td>
<td width="10%" align="center" valign="top" style="padding-removed10px">
<asp:DropDownList ID="ddl_quantity" runat="server" Width="60px" OnSelectedIndexChanged="ddl_quantity_selectedindexchanged" AutoPostBack="true" >
<asp:ListItem> 1 </asp:ListItem>
<asp:ListItem> 2 </asp:ListItem>
</asp:DropDownList> </td>
<td width="12%" align="center" valign="top" style="padding-removed10px">$<asp:Label ID="lbl_subtoprice" runat="server" Text='<%#Eval("Price") %>' ></asp:Label> </td>
<td width="5%" align="center" valign="top" style="padding-removed10px" ><asp:ImageButton ID="imgbtn_del" ImageUrl="~/images/del.jpg" runat="server" CommandName="Delete" CommandArgument='<%#Eval("id") %>' ></asp:ImageButton></td>
</tr>
</ItemTemplate>
</asp:DataList>
this is my datalist now i want to find cell in which book_id is 73 and want to show some text in that cell's label
below code
<asp:Label ID="discount_message" runat="server"></asp:Label>
thanks
<asp:Label ID="lbl_parprice" runat="server" Text='<%#Eval("Price") %>'></asp:Label></td> <td width="10%" align="center" valign="top" style="padding-removed10px"> <asp:DropDownList ID="ddl_quantity" runat="server" Width="60px" OnSelectedIndexChanged="ddl_quantity_selectedindexchanged" AutoPostBack="true" > <asp:ListItem> 1 </asp:ListItem> <asp:ListItem> 2 </asp:ListItem> </asp:DropDownList> </td> <td width="12%" align="center" valign="top" style="padding-removed10px">
<asp:Label ID="lbl_subtoprice" runat="server" Text='<%#Eval("Price") %>' ></asp:Label> </td> <td width="5%" align="center" valign="top" style="padding-removed10px" ><asp:ImageButton ID="imgbtn_del" ImageUrl="~/images/del.jpg" runat="server" CommandName="Delete" CommandArgument='<%#Eval("id") %>' ></asp:ImageButton></td> </tr> </ItemTemplate> </asp:DataList>
this is my datalist now i want to find cell in which book_id is 73 and want to show some text in that cell's label
below code<asp:Label ID="discount_message" runat="server"></asp:Label>
thanks
try using data row bound event. It is fired after each row is bound and then you can use a variable to store index number.
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