将gridview中被点击过的hyperlink隐藏（或禁用）

Question

在gridview中有一个hyperlink，提供取消任务的连接。
因为同一任务只能取消一次，所以点击一次后希将hyperlink隐藏（或禁用）。怎样实现这个功能（.NET/C#）？
知道的朋友请尽快给与指点  

Answer 1

本帖最后由 net_lover 于 2012-03-01 16:17:44 编辑

  

Answer 2

我是想用这种方法：
帮我看看条件语句里面的内容要怎么写
下面代码中的"CancelTask"是hyperLink的id//事件代码
protected void Gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (gvTecherIndex.DataKeys[e.Row.RowIndex][0] == "1")//这句是有错的
{
    e.Row.FindControl("CancelTask").Visible = false;
}
else
{
    e.Row.FindControl("CancelTask").Visible = true;
}
       }
//.......................................................
<asp:GridView ID="gvTecherIndex" runat="server" AutoGenerateColumns="False" Width="658px" 
                    style="margin-left: 0px" AllowPaging="True" 
                    onpageindexchanging="gvTecherIndex_PageIndexChanging" 
                    onrowdatabound="gvTecherIndex_RowDataBound" 
                    onselectedindexchanged="gvTecherIndex_SelectedIndexChanged">
                    <Columns>
                        <asp:BoundField DataField="Q_id" HeaderText="题目编号" Visible="False" />
                        <asp:HyperLinkField DataNavigateUrlFields="Q_id" 
                            DataNavigateUrlFormatString="teacher_details.aspx?Q_id={0}" 
                            HeaderText="题目" DataTextField="Q_title" />
                        <asp:BoundField DataField="Q_createtime" HeaderText="布置时间"></asp:BoundField>
                        <asp:BoundField DataField="Q_finishtime" HeaderText="要求完成时间"></asp:BoundField>
                        <asp:BoundField DataField="stu_id" HeaderText="学号" Visible="False" />
                        <asp:TemplateField HeaderText="传递到本页">
                            <ItemTemplate>
                                <asp:HyperLink ID="CancelTask" runat="server" 
                                    NavigateUrl='<%# Eval("Q_id", "teacher_Index.aspx?Q_id={0}") %>' Text="取消作业"></asp:HyperLink>
                            </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                    <PagerSettings FirstPageText="首页" LastPageText="尾页" NextPageText="下一页" 
                        PreviousPageText="上一页" Mode="NextPreviousFirstLast" />
                </asp:GridView>

Answer 3

改成
if (e.Row.RowType == DataControlRowType.DataRow)

Answer 4

//那就是这样子的：  现在主要是判断hyperlin是否被点击过，如果点击过就隐藏             
if (e.Row.RowType == DataControlRowType.DataRow)
{

    if (gvTecherIndex.DataKeys[e.Row.RowIndex][0] == "0")//在在这里要判断hpylink有没有被点击过
     {
     e.Row.FindControl("CancelTask").Visible = false;
     //e.Row.Cells[0].Text = "被取消";     }
   else
      {
       //e.Row.FindControl("CancelTask").Visible = true;
      }
}