網格視圖行更新和刪除

Question

我有一個網格視圖與下面的標記及以下datasourse（存儲查詢LINQ的過程），我增加了刪除和更新命令字段，但我不知道我有什麼樣的代碼添加到刪除和更新這個網格視圖的作品。

<asp:GridView ID="GridViewDocuments_Search" runat="server" AutoGenerateColumns=False Visible="False" onrowcommand="GridViewDocuments_Search_RowCommand" 
    DataKeyNames="DocID" PageSize="100" > 
    <Columns> 
    <asp:TemplateField HeaderText = "Details"> 
      <ItemTemplate> 
     <asp:Button ID ="btn_Show" Text="Details" runat= "server" CommandName= "Details" CommandArgument='<%# 
     Container.DataItemIndex%>' /> 
     </ItemTemplate> 
      </asp:TemplateField> 

     <asp:HyperLinkField DataNavigateUrlFields="Docid,Transid" 
      DataNavigateUrlFormatString="~/DocResult.aspx?Docid={0}&TransID={1}" 
      DataTextField="DocumentNo" HeaderText="Doc" /> 
     <asp:BoundField DataField="title" HeaderText="Title" SortExpression="title" /> 
     <asp:BoundField DataField="transmittal" HeaderText="transmittal" SortExpression="transmittal" /> 
     <asp:BoundField DataField="Docid" HeaderText="Docid" Visible="false" /> 
     <asp:CommandField ShowEditButton="True" /> 
     <asp:CommandField ShowDeleteButton="True" /> 
    </Columns> 
</asp:GridView> 


protected void btnSearch_Click(object sender, EventArgs e) 
{ 
    _DataContext = new EDMSDataContext(); 
    var query = _DataContext.spQuickSearch(txtSearchKeywords.Text); 
    GridViewDocuments.Visible = false; 
    GridViewDocuments_Search.Visible = true; 
    GridViewDocuments_Search.DataSource = query; 
    GridViewDocuments_Search.DataBind(); 
} 

存儲過程spQuickSearch是象下面這樣：

ALTER proc [dbo].[spQuickSearch] 
@Searchtext varchar(50)=null 

AS 

select DocId,TransId,DocumentNo,Title,TRANSMITTAL 
from DocumentSum2 
where DocumentNo like '%'+@SearchText + '%' 
or Title like '%'+@SearchText + '%' 
or TRANSMITTAL like '%'+@SearchText + '%' 

Answer 1

您可以處理這樣的命令：

protected void GridViewDocuments_Search_RowCommand(object sender, GridViewCommandEventArgs e) 
    { 
     string cmdArg = e.CommandArgument.ToString(); 
     switch (e.CommandName) 
     { 
      case "Details": 
       //TODO: handle your Details command... 
       break; 
      case "Delete": 
       //TODO: handle your Delete command... 
       break; 
     } 
    } 

，你想，你可以添加許多命令（CommandName屬性控制）。例如，您可以添加另一個按鈕，設置刪除的CommandName這樣的：

<asp:Button ID ="btn_Delete" Text="Delete" runat= "server" CommandName= "Delete" CommandArgument='<%# 
    Container.DataItemIndex%>' /> 

命令完成後，你可以調用DataBind刷新網格：

GridViewDocuments_Search.DataBind(); 

Answer 2

檢查這個例子

http://www.vkinfotek.com/gridview/gridview-commandfield.html

詳細

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.commandfield.showeditbutton.aspx