如何在dataList中的LinkBut​​ton事件中传递c＃.net中的值。

Question

I have been designing a code for a project, where I want to get the "ProductId" on OnClick="LinkButton1_Click" event.

Here is the code:

    <asp:DataList ID="DataList1" runat="server" RepeatColumns="4">
                                <ItemTemplate>
                                    <table>
                                        <tr><td><%#Eval("ProductId")%>

           <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">
   <img src='<%#Eval("Image")%>' style="width: 220px; height: 146px" alt="" />
                                            </asp:LinkButton></td>
                                        </tr>
                                        <tr>
                                            <td style="text-align: center">
                                                <%#Eval("ArtName")%>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td style="text-align: center">
                                                <%#Eval("Price")%>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:DataList>

Any suggestion please.

Answer 1

You have to use the itemcommand pattern.

An example at : http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.datalist.itemcommand%28v=vs.110%29.aspx

Basically, you can :

• dismiss the OnClick on your LinkButton
• set a CommandName (for example "LBClick") and CommandArgument (your value) on your button
• subscribe to the DataLIst ItemCommand event
• handle your button click in the ItemCommand handler (if e.CommandName == "LBClick", run code with e.CommandArgument as value)

Hope this will help

Answer 2

You can use OnItemCommand event on your DataList

And try with CommandArgument and CommandName

void Item_Command(Object sender, DataListCommandEventArgs e) 
      {
           if(e.CommandName ="Select")
           {
              var e = e.CommandArgument;
              .... 
           }

      }

View :

<asp:LinkButton ID="LinkButton1" runat="server" CommandName="Select" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ProductId")%>' />

Note : Add OnItemCommand on your datalist