asp.Netgridviewマルチページ時の一括削除

 
  
using System; 
  
using System.Data; 
  
using System.Configuration; 
  
using System.Collections; 
  
using System.Web; 
  
using System.Web.Security; 
  
using System.Web.UI; 
  
using System.Web.UI.WebControls; 
  
using System.Web.UI.WebControls.WebParts; 
  
using System.Web.UI.HtmlControls; 
  
using System.Data.OleDb; 
  
 
  
public partial class admin_book_admin : System.Web.UI.Page 
  
{ 
  
 
  
     
  
    protected void Page_Load(object sender, EventArgs e) 
  
    { 
  
        //            
  
        admin.checkadmin(); 
  
 
  
        btnDel.Attributes.Add("onclick", "return confirm('     ？')"); 
  
 
  
        if (!Page.IsPostBack) 
  
        { 
  
            datainit(); 
  
        } 
  
    } 
  
 
  
    protected void grwBook_PageIndexChanging(object sender, GridViewPageEventArgs e) 
  
    { 
  
        this.grwBook.PageIndex = e.NewPageIndex; 
  
        Session["curretnPage"] = e.NewPageIndex; 
  
        datainit(); 
  
    } 
  
 
  
    //     
  
    private void datainit() 
  
    { 
  
        DataSet ds = db.dataSet("select ID,UserName,Comments,Postdate,newsid from Feedback order by Postdate desc,newsid desc"); 
  
        if (ViewState["currentPage"] != null) 
  
        { 
  
            this.grwBook.PageIndex = Convert.ToInt32(Session["currentPage"]); 
  
        } 
  
        this.grwBook.DataSource = ds; 
  
        this.grwBook.DataBind(); 
  
 
  
    } 
  
 
  
    //       
  
    protected void btnDel_Click(object sender, EventArgs e) 
  
    { 
  
        string sqlText = "("; 
  
        for (int i = 0; i         { 
  
            //   n 3  
  
            CheckBox cbx = (CheckBox)grwBook.Rows[i].FindControl("cbxId"); 
  
            if (cbx.Checked == true) 
  
            { 
  
               sqlText = sqlText + Convert.ToInt32(grwBook.DataKeys[i].Value) + ","; 
  
            } 
  
        } 
  
 
  
        //        
  
        if (sqlText != "(") 
  
        { 
  
            //       ，        
  
            sqlText = sqlText.Substring(0, sqlText.Length - 1) + ")"; 
  
            sqlText = "delete from Feedback where ID in" + sqlText; 
  
            try 
  
            { 
  
                //       
  
                db.excuteSql(sqlText); 
  
                //       
  
                common.salert("    "); 
  
                datainit(); 
  
                //Response.Redirect("book_admin.aspx"); 
  
            } 
  
            catch (Exception ex) 
  
            { 
  
                //      ，       
  
                common.salert(ex.Message); 
  
            } 
  
            finally 
  
            { 
  
 
  
            } 
  
        } 
  
        else 
  
        { 
  
            common.salert("           "); 
  
        } 
  
    } 
  
 
  
 
  
}