我如何獲得Gridview中特定行的值

Question

我有一個Gridview，它也包含一個按鈕字段。當點擊某一行上的這個按鈕時，我想讓它更新我的數據庫。例如，如果一行包含(SN = 1)我希望它更新按鈕以使用包含"SN = 1"的行更新數據庫。當點擊同一行上的按鈕時，如何獲得該行的SN？

這是我的GridView的定義：

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" Height="326px" OnPageIndexChanging="GridView1_PageIndexChanging" PageSize="5" style="text-align: left; margin-left: 169px" Width="1069px" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" OnRowDataBound="GridView1_RowDataBound" AutoGenerateColumns="False" OnRowCommand="GridView1_RowCommand"> 
    <Columns> 
     <asp:BoundField HeaderText="S/N" DataField="SN" /> 
     <asp:BoundField HeaderText="First Name" DataField="FirstName" /> 
     <asp:BoundField HeaderText="Address" DataField="Address" /> 
     <asp:BoundField HeaderText="Phone Number" DataField="PhoneNumber" /> 
     <asp:BoundField HeaderText="Sex" DataField="Sex" /> 
     <asp:BoundField HeaderText="Reason" DataField="Reason" /> 
     <asp:BoundField HeaderText="SignIn" DataField="SignIn_Time" /> 
     <asp:BoundField HeaderText="SignOut" DataField="Signout_Time" /> 
     <asp:TemplateField HeaderText="Action"> 
      <ItemTemplate> 
       <asp:Button ID="out" runat="server" Text="Sign out" CommandName="SignOut"/> 
      </ItemTemplate> 
     </asp:TemplateField> 
    </Columns> 

    <PagerSettings FirstPageText="First" LastPageText="Last" Mode="NumericFirstLast" PageButtonCount="5" /> 
</asp:GridView> 

這裏，當點擊該行按鈕時，我想更新我與signout實時數據庫。我似乎無法得到它的行和更新SN。

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) 
{ 
    if (e.CommandName == "SignOut") 
    { 

    } 
} 

Answer 1

如果你追求的價值是來自同一個數據源，你可以添加值作爲CommandArgument：

<asp:TemplateField HeaderText="Action"> 
    <ItemTemplate> 
     <asp:Button ID="out" 
      runat="server" 
      Text="Sign out" 
      CommandName="SignOut" 
      CommandArgument='<%# Eval("SN") %>'/> 
    </ItemTemplate> 
</asp:TemplateField> 

在後面的代碼：

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) 
{ 
    if (e.CommandName == "SignOut") 
    { 
     string sn = e.CommandArgument.ToString(); 
     if (sn == "1") 
     { 
      /*DO STUFF....*/ 
     } 
    } 
}