DataGrid实现自定义分页，鼠标移至变色，删除确认、可编辑，可删除

数据库：SqlServer 2000, 数据源：系统自带的Northwind

操作系统：Window XP 中文版

开发平台：.Net Framework 1.1, C#语言

效果预览：  

 

好了，让我们开始奇异的Datagrid之旅吧：

先在数据库中定义存储过程，轻易实现百万级数据分页：

//@PageSize：分页大小，PageIndex：页号，@PageCount：总页数，@recordCount：记录数

CREATE PROCEDURE GetCustomDataPage @pageSize int, @pageIndex int, @pageCount int output, @recordCount int output AS

declare @SQL varchar(1000)

select @recordCount=count(*) from products

set @pageCount=ceiling(@recordCount*1.0/@pageSize)

if @pageIndex = 0 or @pageCount<=1

 set @SQL='select top '+str(@pageSize)+' productID,productName, unitPrice from products order by productID asc'

else if @pageIndex = @pageCount -1

 set @SQL='select * from ( select top '+str(@recordCount - @pageSize * @pageIndex)+' productID,productName, unitPrice from products order by productID desc) TempTable order by productID asc'

else  set @SQL='select top '+str(@pageSize) +' * from ( select top '+str(@recordCount - @pageSize * @pageIndex)+' productID,productName, unitPrice from products order by productID desc) TempTable order by productID asc'

 

exec(@SQL)

GO

好了，存储过程建好了，那么如何在.Net中使用呢？请看以下代码：

        private uint pageCount;  //总页数

 

        private uint recordCount;  //总记录数

 

        private DataSet GetPageData(uint pageSize, uint pageIndex)

 

        {

 

            string strConn = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];           

 

            SqlConnection conn = new SqlConnection(strConn);

 

 

            conn.Open();

 

 

            SqlCommand command = new SqlCommand("GetCustomDataPage",conn);  //第一个参数为存储过程名

 

            command.CommandType = CommandType.StoredProcedure;   //声明命令类型为存储过程

 

 

            command.Parameters.Add("@pageSize",SqlDbType.Int);

 

            command.Parameters["@pageSize"].Value = pageSize;

 

 

            command.Parameters.Add("@pageIndex",SqlDbType.Int);

 

            command.Parameters["@pageIndex"].Value = pageIndex;

 

 

            command.Parameters.Add("@pageCount",SqlDbType.Int);

 

            command.Parameters["@pageCount"].Value = pageCount;

 

            command.Parameters["@pageCount"].Direction = ParameterDirection.Output;  //存储过程中的输出参数

 

 

            command.Parameters.Add("@recordCount",SqlDbType.Int);

 

            command.Parameters["@recordCount"].Value = recordCount;

 

            command.Parameters["@recordCount"].Direction = ParameterDirection.Output; //存储过程中的输出参数

 

 

            SqlDataAdapter adapter = new SqlDataAdapter(command);

 

            DataSet ds = new DataSet();

 

            adapter.Fill(ds);           

 

 

            //获得输出参数值

 

            pageCount = Convert.ToUInt32(command.Parameters["@pageCount"].Value);

 

            recordCount = Convert.ToUInt32(command.Parameters["@recordCount"].Value);

 

           

 

            conn.Close();

 

            return ds;

 

        }

 

 

        //绑定数据到DataGrid中

 

        private void BindDataGrid()

 

        {

 

            DataSet ds = GetPageData((uint)dgProduct.PageSize,(uint)dgProduct.CurrentPageIndex);

 

            dgProduct.VirtualItemCount = (int)recordCount;

 

            dgProduct.DataSource = ds;

 

            dgProduct.DataBind();

 

        }

 

 

        //页面加载时就绑定DataGrid

 

        private void Page_Load(object sender, System.EventArgs e)

 

        {

 

            if(!Page.IsPostBack)

 

            {

 

               BindDataGrid();

 

            }

 

        }

 

        //用户翻页时事件处理

 

        private void dgProduct_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)

 

        {

 

            dgProduct.CurrentPageIndex = e.NewPageIndex;

 

            BindDataGrid();

 

        }

 

 

        //用户单击编辑按纽时事件处理

 

        private void dgProduct_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

 

        {

 

            dgProduct.EditItemIndex = e.Item.ItemIndex;

 

            BindDataGrid();

 

        }

 

 

        //用户单击取消按纽时事件处理

 

        private void dgProduct_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

 

        {

 

            dgProduct.EditItemIndex = -1;

 

            BindDataGrid();

 

        }

 

 

        //用户单击更新按纽时事件处理

 

        private void dgProduct_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

 

        {

 

            string strConn = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];           

 

            SqlConnection conn = new SqlConnection(strConn);

 

 

            conn.Open();

 

            //string strSQL = "update from products set productName=@productName, set unitPrice=@unitPrice where productID=@productID";

 

            string strSQL = "update products set productName=@productName where productID=@productID";

 

            SqlCommand command = new SqlCommand(strSQL,conn);

 

 

            command.Parameters.Add("@productName",SqlDbType.NVarChar,40);

 

            command.Parameters["@productName"].Value = ((TextBox)(e.Item.Cells[1].Controls[0])).Text.Trim();

 

 

            //command.Parameters.Add("@unitPrice",SqlDbType.Int);

 

            //command.Parameters["@unitPrice"].Value = Convert.ToInt32(((TextBox)(e.Item.Cells[2].Controls[0])).Text.Trim());

 

 

            command.Parameters.Add("@productID",SqlDbType.Int);

 

            command.Parameters["@productID"].Value = dgProduct.DataKeys[e.Item.ItemIndex];

 

 

            command.ExecuteNonQuery();

 

            conn.Close();

 

 

            dgProduct.EditItemIndex = -1;

 

            BindDataGrid();

 

        }

 

 

       //用户单击删除按纽时事件处理

 

        private void dgProduct_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

 

        {

 

            string strConn = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];

 

            SqlConnection conn = new SqlConnection(strConn);

 

 

            conn.Open();

 

            SqlCommand command = new SqlCommand("DeleteProduct",conn);

 

            command.CommandType = CommandType.StoredProcedure;