步步为营VS 2008 + .NET 3.5(10) - DLINQ(LINQ to SQL)之调用存储过程的添加、查询、更新和删除

using System; 
using System.Data; 
using System.Configuration; 
using System.Collections; 
using System.Linq; 
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.Xml.Linq; 
 
using DAL; 
 
public partial  class LINQ_DLINQ_SP : System.Web.UI.Page 
{ 
         // 实例化一个NorthwindDataContext（DataContext） 
         // 在对象关系设计器（Object Relational Designer）中拖进来存储过程，同时NorthwindDataContext类中就会自动生成调用相应存储过程的相应方法 
        NorthwindDataContext _ctx =  new NorthwindDataContext(); 
 
         protected  void Page_Load( object sender, EventArgs e) 
        { 
                 if (!Page.IsPostBack) 
                { 
                        BindCategory(); 
                } 
        } 
 
         private  void BindCategory() 
        { 
                var categories = _ctx.GetCategory( null); 
 
                gvCategory.DataSource = categories; 
                gvCategory.DataBind(); 
        } 
 
         protected  void btnAdd_Click( object sender, EventArgs e) 
        { 
                 // categoryId - 用于获取存储过程的输出值（output） 
                 int? categoryId =  null; 
                 // rtn - 用于获取存储过程的返回值（return） 
                 int rtn = _ctx.AddCategory(txtCategoryName.Text, txtDescription.Text,  ref categoryId); 
 
                Page.ClientScript.RegisterStartupScript( 
                         this.GetType(), 
                         "js", 
                         string.Format( "alert('output:{0},return:{1}')", categoryId.ToString(), rtn.ToString()), 
                         true); 
 
                gvCategory.EditIndex = -1; 
                BindCategory(); 
        } 
 
         protected  void gvCategory_SelectedIndexChanged( object sender, EventArgs e) 
        { 
                var products = _ctx.GetProduct(( int)gvCategory.SelectedValue); 
 
                dvProduct.DataSource = products; 
                dvProduct.DataBind(); 
        } 
 
         protected  void gvCategory_RowDeleting( object sender, GridViewDeleteEventArgs e) 
        { 
                 // rtn - 用于获取存储过程的返回值（return） 
                 int rtn = _ctx.DeleteCategory(( int)gvCategory.DataKeys[e.RowIndex].Value); 
 
                Page.ClientScript.RegisterStartupScript( 
                         this.GetType(), 
                         "js", 
                         string.Format( "alert('return:{0}')", rtn.ToString()), 
                         true); 
 
                gvCategory.EditIndex = -1; 
                BindCategory(); 
        } 
 
         protected  void gvCategory_RowUpdating( object sender, GridViewUpdateEventArgs e) 
        { 
                 // rtn - 用于获取存储过程的返回值（return） 
                 int rtn = _ctx.UpdateCategory( 
                        ( int)gvCategory.DataKeys[e.RowIndex].Value, 
                        ((TextBox)gvCategory.Rows[e.RowIndex].Cells[2].Controls[0]).Text, 
                        ((TextBox)gvCategory.Rows[e.RowIndex].Cells[3].Controls[0]).Text); 
 
                Page.ClientScript.RegisterStartupScript( 
                         this.GetType(), 
                         "js", 
                         string.Format( "alert('return:{0}')", rtn.ToString()), 
                         true); 
 
                gvCategory.EditIndex = -1; 
                BindCategory(); 
        } 
 
         protected  void gvCategory_RowEditing( object sender, GridViewEditEventArgs e) 
        { 
                gvCategory.EditIndex = e.NewEditIndex; 
                BindCategory(); 
        } 
 
         protected  void gvCategory_RowCancelingEdit( object sender, GridViewCancelEditEventArgs e) 
        { 
                gvCategory.EditIndex = -1; 
                BindCategory(); 
        } 
}