ListView ASP.net编辑模式 [英] ListView ASP.net Edit Mode

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问题描述





当ItemUpdating事件触发时，每个人都知道如何在EditMode的Listview中获取我的文本框的新编辑值。



这是我的代码：

- 这只返回控件中的旧值bind。



< pre lang =cs> protected void lstCategory_ItemUpdating（ object sender，ListViewUpdateEventArgs e）
{



// foreach（DictionaryEntry de in e.NewValues）
// {

// Response.Write（de.Value.ToString（）） ;
// }

// Response.Write（进入更新）;


ListViewItem itm = lstCategory.Items [e.ItemIndex] ;
TextBox tbx =（TextBox）itm.FindControl（ txtCatName）;
Response.Write（tbx.Text）;


}





HTML代码：



 asp：ListView ID =lstCategoryrunat =serverItemPlaceholderID =rowData
 onitemupdating =lstCategory_ItemUpdating
 onitemdeleting =lstCategory_ItemDeleting
 onitemcanceling =lstCategory_ItemCanceling
 onitemediting =lstCategory_ItemEditing1DataKeyNames =id
 onitemcommand =lstCategory_ItemCommand> 
 <   LayoutTemplate  >  
 <   table     id   =  tblCategory    cellpadding   =  0    cellspacing   =  0 >  
 < ;   tr  >  
  <   th  > 类别名称<   / th  >  
 <   th  > 行动<   / th  >  
 <   / tr  >  
 
 <   tr     runat   =   server    id  < span class =code-keyword> =  rowData < span class =code-keyword>>  
 <   / tr  >  
 
 <   / table  >  
 <   / LayoutTemplate  >  
 <   ItemTemplate  >  
 <   tr     runat   =  server    class   =  itm >  
 <  < span class =code-leadattribute> td  >  <％ #Eval（   catName）％>  
 <   / td  >  
 <   td  >  
 <   asp：LinkBut​​ton     ID   =  lnkEdit    runat   =  server   文字  = 编辑    CommandName   = 编辑    CommandArgument   ='  <％ #Eval（  id）％> '   < span class =code-keyword> /  >  
 <   asp：LinkBut​​ton     ID   =  lnkDelete    runat   =  server   文本  = 删除    CommandName   = 删除    CommandArgument   ='  <％ #Eval（  id）％> '    OnClientClick   ='  return window.confirm（您确定要删除）'  /  >  
 <   / td  >  
 <   / tr  >  
 <   / ItemTemplate  >  
 <   AlternatingItemTemplate  >  
 <   tr     runat   =  ser ver    class   =  altitm >  
 <   td  >  <％ #Eval（  catName）％>  
 <   / td  > ;  
 <   td   >  
 <   asp：LinkBut​​ton     ID   =  lnkAltEdit    runat   =  server   文字  = 编辑 < span class =code-attribute>   CommandName   = 编辑    CommandArgument   = '  <％ #Eval（  id）％> '  /  >  
 <   asp：LinkBut​​ton     ID   =  lnkAltDelete    runat   =  server   文字  = 删除    CommandName   = 删除    CommandArgument   ='   <％ #Eval（ < span class =code-string> id）％> '    OnClientClick   ='  return window.confirm（您确定要删除）'  /   >  
 <   / td  >  
 <   / tr  >  
 <   / AlternatingItemTemplate  >  
 <   EditItemTemplate  >  
 <   tr     runat   =  server < span class =code-attribute>   style   = 背景：＃778899 >  
 <  < span class =code-leadattribute> td  >  
 <   asp：TextBox     ID   =  txtCatName    runat   =  server    BorderColor   = 黑色    BorderStyle   = 实体    BorderWidth   =  1px   文字  ='  <％ #Eval（  catName）％> '    EnableViewState     =  true    /  >  
 <   / td  >  
 <   td  >  
 <   asp：LinkBut​​ton    文字  = 保存    ID   =  lnkSave    runat   =  server    CommandName   = 更新  /  >  
 <   asp：LinkBut​​ton    文本 < span class =code-keyword> = 取消    ID   =  lnkCancel    runat   =  server    CommandName   = 取消  /  >  
 < span class =code-keyword><   / td  >  
 <   / tr  >  
 <   / EditItemTemplate  >  
 <   EmptyDataTemplate  >  
 <   table  >  
 <   tr  >  
 <    > 类别名称<   / th  >  
 <   th  > 操作<   / th  >  
 <   / tr  >  
 <   tr  >  
 <   td  < span class =code-attribute>   colspan   =  2 >  
无类别但
 <   / td  >  
 <   / tr  >  
 <   /表格 >  
 <   / EmptyDataTemplate  >  
 
 <   / asp：ListView  >

解决方案

从e.NewValues字典中获取新值



http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listviewupdateeventargs.aspx [ ^ ]


利用2路数据绑定（即要在回发中获取值，请使用Bind方法而不是Eval方法。


我已经尝试过但它不起作用。没有获得新的值。



这里是我的html标签：



 <   div     id   =  content >  
 <   asp：ListView     ID   =  lstCategory    runat   = 服务器    ItemPlaceholderID   =  rowData  
   
                           onitemupdating   =  lstCategory_ItemUpdating  
   
                           onitemdeleting   =  lstCategory_ItemDeleting  
   
                           onitemcanceling   =  lstCategory_ItemCanceling  
   
                           onitemediting   =  lstCategory_ItemEditing1    DataKeyNames   =  id  
   
                           onitemcommand   =  lstCategory_ItemCommand >  
 <   LayoutTemplate  >  
 <   table     id   =  tblCategory    cellpadding   =  0    cellspacing   =  0     class   = < span class =code-keyword> tblClass >  
 <   tr  >  
 <   th     class   =  tblClassTh > 类别名称<   / th  >  
 <   th  < span class =code-attribute>   class   =  tblClassTh > 行动<   / th  >  
 <   / tr  >  
 
 <   tr     runat   =  server    id   =  rowData >  
 <   / tr  >  
 
 <   / table  >  
 <   / LayoutTemplate  >  
  <   ItemTemplate  >  
 <   tr     runat   = 服务器    class   =  itm >  
 <   td     class   =  tblClassTd >  <％ #Eval（  catName）％>  
 <   / td  >  
 <   td     cla ss   =  tblClassTd >  
 <   asp：LinkBut​​ton     ID   =  lnkEdit    runat   =  server   文本  = 编辑    CommandName   = 编辑    CommandArgument   ='  <％ #Eval（  id）％> '    /  >  
 <   asp：LinkBut​​ton     ID   =  lnkDelete    runat =\"server\" Text=\"Delete\" CommandName=\"Delete\" CommandArgument='<%# Eval(\"id\") %>' OnClientClick='return window.confirm(\"Are you sure to delete\")'/> 
                 </td> 
               </tr> 
            </ItemTemplate> 
            <AlternatingItemTemplate> 
               <tr runat=\"server\" class=\"altitm\"> 
                <td class=\"tblClassTd\"> <%#Eval(\"catName\")%> 
                </td> 
                <td class=\"tblClassTd\"> 
                  <asp:LinkButton ID=\"lnkAltEdit\" runat=\"server \" Text=\"Edit\" CommandName=\"Edit\" CommandArgument='<%# Eval(\"id\") %>'/> 
                  <asp:LinkButton ID=\"lnkAltDelete\" runat=\"server\" Text=\"Delete\" CommandName=\"Delete\" CommandArgument='<%# Eval(\"id\") %>' OnClientClick='return window.confirm(\"Are you sure to delete\")'/> 
                </td> 
               </tr> 
            </AlternatingItemTemplate> 
            <EditItemTemplate> 
              <tr runat=\"server\" style=\"background:#778899\"> 
              <td class=\"tblClassTd\"> 
               <asp:TextBox ID=\"txtCatName\" runat=\"server\" BorderColor=\"Black\" BorderStyle=\"Solid\" BorderWidth=\"1px\" Text='<%#Eval(\"catName\") %>' EnableViewState =\"true\" /> 
               </td> 
               <td class=\"tblClassTd\"> 
                  <asp:LinkButton Text=\"Save\" ID=\"lnkSave\" runat=\"server\" CommandName=\"Update\"/> 
                  <asp:LinkButton Text=\"Cancel\" ID=\"lnkCancel\" runat=\"server\" CommandName=\"Cancel\"/> 
               </td> 
               </tr> 
            </EditItemTemplate> 
            <EmptyDataTemplate> 
               <table> 
               <tr> 
                    <th class=\"tblClassTh\">Category Name</th> 
                    <th class=\"tblClassTh\">Action</th> 
                  </tr> 
               <tr> 
                <td colspan=\"2\" class=\"tblClassTd\"> 
                  No Category Yet 
                </td> 
                </tr> 
               </table> 
            </EmptyDat aTemplate> 
  
         </asp:ListView> 
     </div>


Hi,

Everyone knows how to get the new edited values of my textbox in Listview on EditMode when ItemUpdating Event fires.

Here is my code :
- This only return the old values bind in the control.

protected void lstCategory_ItemUpdating(object sender, ListViewUpdateEventArgs e)
       {



           //foreach (DictionaryEntry de in e.NewValues)
           //{

           //    Response.Write(de.Value.ToString());
           //}

           //Response.Write("Getting into Update");


            ListViewItem itm = lstCategory.Items[e.ItemIndex];
            TextBox tbx = (TextBox)itm.FindControl("txtCatName");
            Response.Write(tbx.Text);


       }



HTML Code :

asp:ListView ID="lstCategory" runat="server" ItemPlaceholderID="rowData"
            onitemupdating="lstCategory_ItemUpdating"
            onitemdeleting="lstCategory_ItemDeleting"
            onitemcanceling="lstCategory_ItemCanceling"
            onitemediting="lstCategory_ItemEditing1" DataKeyNames="id"
            onitemcommand="lstCategory_ItemCommand">
           <LayoutTemplate>
              <table id="tblCategory" cellpadding="0" cellspacing="0">
                 <tr>
                   <th>Category Name</th>
                   <th>Action</th>
                 </tr>

                 <tr runat="server" id="rowData">
                 </tr>

              </table>
           </LayoutTemplate>
           <ItemTemplate>
              <tr runat="server" class="itm">
                <td><%#Eval("catName")%>
                 </td>
                <td>
                <asp:LinkButton ID="lnkEdit" runat="server" Text="Edit" CommandName="Edit" CommandArgument='<%# Eval("id") %>' />
                <asp:LinkButton ID="lnkDelete" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%# Eval("id") %>' OnClientClick='return window.confirm("Are you sure to delete")'/>
                </td>
              </tr>
           </ItemTemplate>
           <AlternatingItemTemplate>
              <tr runat="server" class="altitm">
               <td> <%#Eval("catName")%>
               </td>
               <td>
                 <asp:LinkButton ID="lnkAltEdit" runat="server" Text="Edit" CommandName="Edit" CommandArgument='<%# Eval("id") %>'/>
                 <asp:LinkButton ID="lnkAltDelete" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%# Eval("id") %>' OnClientClick='return window.confirm("Are you sure to delete")'/>
               </td>
              </tr>
           </AlternatingItemTemplate>
           <EditItemTemplate>
             <tr runat="server" style="background:#778899">
             <td>
              <asp:TextBox ID="txtCatName" runat="server" BorderColor="Black" BorderStyle="Solid" BorderWidth="1px" Text='<%#Eval("catName") %>' EnableViewState ="true" />
              </td>
              <td>
                 <asp:LinkButton Text="Save" ID="lnkSave" runat="server" CommandName="Update"/>
                 <asp:LinkButton Text="Cancel" ID="lnkCancel" runat="server" CommandName="Cancel"/>
              </td>
              </tr>
           </EditItemTemplate>
           <EmptyDataTemplate>
              <table>
              <tr>
                   <th>Category Name</th>
                   <th>Action</th>
                 </tr>
              <tr>
               <td colspan="2">
                 No Category Yet
               </td>
               </tr>
              </table>
           </EmptyDataTemplate>

        </asp:ListView>

解决方案

Get new values from e.NewValues dictionary

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listviewupdateeventargs.aspx[^]


To take advantage of "2 way" databinding (i.e. to get values in the postback), use the Bind method instead of the Eval method.


I try this already but it doesn't work..No new values obtained.

here is my html tags:

<div id="content">
        <asp:ListView ID="lstCategory" runat="server" ItemPlaceholderID="rowData"

            onitemupdating="lstCategory_ItemUpdating"

            onitemdeleting="lstCategory_ItemDeleting"

            onitemcanceling="lstCategory_ItemCanceling"

            onitemediting="lstCategory_ItemEditing1" DataKeyNames="id"

            onitemcommand="lstCategory_ItemCommand">
           <LayoutTemplate>
              <table id="tblCategory" cellpadding="0" cellspacing="0" class="tblClass">
                 <tr>
                   <th class="tblClassTh">Category Name</th>
                   <th class="tblClassTh">Action</th>
                 </tr>

                 <tr runat="server" id="rowData">
                 </tr>

              </table>
           </LayoutTemplate>
           <ItemTemplate>
              <tr runat="server" class="itm">
                <td class="tblClassTd"><%#Eval("catName")%>
                 </td>
                <td class="tblClassTd">
                <asp:LinkButton ID="lnkEdit" runat="server" Text="Edit" CommandName="Edit" CommandArgument='<%# Eval("id") %>' />
                <asp:LinkButton ID="lnkDelete" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%# Eval("id") %>' OnClientClick='return window.confirm("Are you sure to delete")'/>
                </td>
              </tr>
           </ItemTemplate>
           <AlternatingItemTemplate>
              <tr runat="server" class="altitm">
               <td class="tblClassTd"> <%#Eval("catName")%>
               </td>
               <td class="tblClassTd">
                 <asp:LinkButton ID="lnkAltEdit" runat="server" Text="Edit" CommandName="Edit" CommandArgument='<%# Eval("id") %>'/>
                 <asp:LinkButton ID="lnkAltDelete" runat="server" Text="Delete" CommandName="Delete" CommandArgument='<%# Eval("id") %>' OnClientClick='return window.confirm("Are you sure to delete")'/>
               </td>
              </tr>
           </AlternatingItemTemplate>
           <EditItemTemplate>
             <tr runat="server" style="background:#778899">
             <td class="tblClassTd">
              <asp:TextBox ID="txtCatName" runat="server" BorderColor="Black" BorderStyle="Solid" BorderWidth="1px" Text='<%#Eval("catName") %>' EnableViewState ="true" />
              </td>
              <td class="tblClassTd">
                 <asp:LinkButton Text="Save" ID="lnkSave" runat="server" CommandName="Update"/>
                 <asp:LinkButton Text="Cancel" ID="lnkCancel" runat="server" CommandName="Cancel"/>
              </td>
              </tr>
           </EditItemTemplate>
           <EmptyDataTemplate>
              <table>
              <tr>
                   <th class="tblClassTh">Category Name</th>
                   <th class="tblClassTh">Action</th>
                 </tr>
              <tr>
               <td colspan="2" class="tblClassTd">
                 No Category Yet
               </td>
               </tr>
              </table>
           </EmptyDataTemplate>

        </asp:ListView>
    </div>


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