datalist动态添加行 刚刚结贴，继续发问

如何在datalist里面动态点击添加就添加一行？用来做添加的，
datalist左边显示数据，右边放几个按钮，添，删，改  
当点击添加的时候就在下面添加一行，然后写入数据，；来做添加  ，修改亦如此

解决方案 »

  1.   

    前台代码：Default.aspx
    ----------------------------------------<%@ Page language="c#" Codebehind="Default.aspx.cs" AutoEventWireup="false" Inherits="Example.DataListTest" %>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
    <HTML>
     <HEAD>
      <title>DataListTest</title>
      <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
      <meta content="C#" name="CODE_LANGUAGE">
      <meta content="JavaScript" name="vs_defaultClientScript">
      <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
      <style type="text/css">TD { FONT-SIZE: 12px; COLOR: #000000; FONT-FAMILY: "宋体" }
      </style>
     </HEAD>
     <body MS_POSITIONING="GridLayout">
      <form id="Form1" method="post" runat="server">
       <table cellSpacing="0" cellPadding="0" width="100%" border="0">
        <tr>
        <td><a href="DlNested.aspx">DataList嵌套实例</a></td>
        </tr>
        <tr>
         <td>
          <table cellSpacing="0" borderColorDark="white" cellPadding="0" width="100%" align="center"
           border="1">
           <tr>
            <td><asp:datalist id="DataList1" runat="server" Width="90%" Height="280px" RepeatColumns="2" RepeatDirection="Horizontal"
              RepeatLayout="Flow">
              <headertemplate>
               <table id="Table6" cellspacing="0" bordercolordark="white" cellpadding="0" width="100%"
                border="1">
                <tr>
                 <td width="80%"><font face="宋体">TypeName</font></td>
                 <td width="50"><font face="宋体">选择</font></td>
                 <td width="50"><font face="宋体">确定</font></td>
                 <td width="50"><font face="宋体">删除</font></td>
                </tr>
               </table>
              </headertemplate>
              <selecteditemtemplate>
               <font face="宋体">
                <table id="Table3" cellspacing="0" cellpadding="0" width="100%" border="1" bordercolordark="white">
                 <tr>
                  <td><font face="宋体">TypeID</font></td>
                  <td><font face="宋体" color="#ff3366"><font face="宋体">TypeName</font></font></td>
                 </tr>
                 <tr>
                  <td style="HEIGHT: 21px"><font face="宋体">
                    <asp:Label id=lblTypeID runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "I_TypeID") %>'>
                    </asp:Label></font></td>
                  <td style="HEIGHT: 21px"><font face="宋体" color="#ff3366">
                    <asp:Label id=lblTypeName runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "C_TypeName") %>'>
                    </asp:Label></font></td>
                 </tr>
                 <tr>
                  <td colspan="2">
                   <asp:Button id="btnBack" runat="server" CommandName="cancel" Text="返回"></asp:Button></td>
                 </tr>
                </table>
               </font>
              </selecteditemtemplate>
              <footertemplate>
               <table id="Table8" cellspacing="0" bordercolordark="white" cellpadding="0" width="100%"
                border="1">
                <tr>
                 <td><font face="宋体">TypeID</font></td>
                 <td>
                  <asp:TextBox id="txtTypeIDInsert" runat="server"></asp:TextBox></td>
                 <td><font face="宋体">TypeName</font></td>
                 <td>
                  <asp:TextBox id="txtTypeNameInsert" runat="server"></asp:TextBox></td>
                 <td align="center">
                  <asp:Button id="btnInsert" runat="server" Text="新增" CommandName="Insert"></asp:Button></td>
                </tr>
               </table>
              </footertemplate>
              <itemtemplate>
               <table cellspacing="0" cellpadding="0" width="100%" border="1" bordercolordark="white">
                <tr>
                 <td width="80%"><font face="宋体" color="red">
                   <%# DataBinder.Eval(Container.DataItem,"C_TypeName")%>
                  </font>
                 </td>
                 <td width="50">
                  <asp:Button id="btnSelect" runat="server" CommandName="select" Text="选择"></asp:Button></td>
                 <td width="50">
                  <asp:Button id="btnModify" runat="server" CommandName="edit" Text="编辑" EnableViewState="true"></asp:Button></td>
                 <td width="50"><font face="宋体">
                   <asp:Button id=btnDelete runat="server" CommandName="delete" Text="删除" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "I_TypeID") %>'>
                   </asp:Button></font></td>
                </tr>
               </table>
              </itemtemplate>
              <edititemtemplate>
               <table id="Table2" cellspacing="0" cellpadding="0" width="100%" border="1">
                <tr>
                 <td style="WIDTH: 75px; HEIGHT: 23px"><font face="宋体"><font face="宋体">TypeName</font></font></td>
                 <td style="HEIGHT: 23px"><font face="宋体" color="#ff3366">
                   <asp:TextBox id=txtTypeName runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "C_TypeName") %>'>
                   </asp:TextBox></font></td>
                </tr>
                <tr>
                 <td style="WIDTH: 75px"><font face="宋体">
                   <asp:Button id=btnUpdate runat="server" CommandName="update" Text="更新" CommandArgument='<%# DataBinder.Eval(Container.DataItem, "I_TypeID") %>'>
                   </asp:Button></font></td>
                 <td><font face="宋体" color="#ff3366">
                   <asp:Button id="btnCancle" runat="server" CommandName="cancel" Text="取消"></asp:Button></font></td>
                </tr>
               </table>
              </edititemtemplate>
             </asp:datalist></td>
           </tr>
          </table>
         </td>
        </tr>
        <tr>
         <td>
          <TABLE cellSpacing="0" borderColorDark="white" cellPadding="0" width="100%" border="1">
           <TR align="center">
            <TD noWrap width="10%">共
             <asp:label id="lblRecNum" runat="server"></asp:label>条记录</TD>
            <TD noWrap width="30%">第
             <asp:label id="lblCurPageNO" runat="server"></asp:label>页/共
             <asp:label id="lblPageNum" runat="server"></asp:label>页</TD>
            <TD noWrap width="5%"><asp:button id="btnFirst" runat="server" Text="首页"></asp:button></TD>
            <TD noWrap width="5%"><asp:button id="btnPreview" runat="server" Text="上页"></asp:button></TD>
            <TD noWrap width="5%"><asp:button id="btnNext" runat="server" Text="下页"></asp:button></TD>
            <TD noWrap width="5%"><asp:button id="btnLast" runat="server" Text="末页"></asp:button></TD>
            <TD noWrap width="20%">每页<asp:dropdownlist id="ddlPageRowNum" runat="server" AutoPostBack="True"></asp:dropdownlist>行</TD>
            <TD noWrap width="20%">转到
             <asp:dropdownlist id="ddlJumpToPageNum" runat="server" AutoPostBack="True"></asp:dropdownlist>页</TD>
           </TR>
          </TABLE>
         </td>
        </tr>
       </table>
      </form>
     </body>
    </HTML>
      

  2.   

    设置模板列
      DataTable dt = (DataTable)ViewState["Table"];
      DataRow dr = dt.NewRow();
      dr[0] = "";
      dt.Rows.Add(dr);
      dt.AcceptChanges();  DataTable dt = (DataTable)ViewState["Table"];
      datalist1.DataSource = dt;
      datalist1.DataBind();