Datalist控件使用存储过程来分页实现代码

  --------------前台:-------------------

  

复制代码 代码如下:

  <body>

  <form id="form1" runat="server">

  <div>

  <asp:DataList ID="DataList1" runat="server"

  onitemcommand="DataList1_ItemCommand"

  oncancelcommand="DataList1_CancelCommand"

  ondeletecommand="DataList1_DeleteCommand" oneditcommand="DataList1_EditCommand"

  onupdatecommand="DataList1_UpdateCommand"

  onitemdatabound="DataList1_ItemDataBound">

  <EditItemTemplate>

  <table style="width: 100%; height: 180px;">

  <tr>

  <td class="style4">

  商品名:</td>

  <td class="style2">

  <asp:TextBox ID="txtProductName" runat="server"

  Text='<%# Eval("ProductName") %>'></asp:TextBox>

  </td>

  </tr>

  <tr>

  <td class="style4">

  规格:</td>

  <td class="style2">

  <asp:TextBox ID="txtProductStandard" runat="server"

  Text='<%# Eval("ProductStandard") %>'></asp:TextBox>

  </td>

  </tr>

  <tr>

  <td class="style4">

  包装率:</td>

  <td class="style2">

  <asp:TextBox ID="txtPackagingRatio" runat="server"

  Text='<%# Eval("PackagingRatio") %>'></asp:TextBox>

  </td>

  </tr>

  <tr>

  <td class="style4">

  商品条码:</td>

  <td class="style2">

  <asp:TextBox ID="txtArticleNum" runat="server" Text='<%# Eval("ArticleNum") %>'></asp:TextBox>

  </td>

  </tr>

  <tr>

  <td class="style4">

  价格:</td>

  <td class="style2">

  <asp:TextBox ID="txtPrice" runat="server" Text='<%# Eval("Price") %>'></asp:TextBox>

  </td>

  </tr>

  <tr>

  <td class="style4">

  <asp:Button ID="btnUpdate" runat="server" CommandArgument='<%# Eval("PId") %>'

  CommandName="update" Height="21px" Text="更新" />

  </td>

  <td class="style2">

  <asp:Button ID="btnCancel" runat="server" CommandName="cancel" Text="取消" />

  </td>

  </tr>

  </table>

  </EditItemTemplate>

  <ItemTemplate>

  产品名:<asp:Label ID="Label1" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label>

  <br />

  规格:<asp:Label ID="Label2" runat="server" Text='<%# Eval("ProductStandard") %>'></asp:Label>

  <br />

  包装率:<asp:Label ID="Label3" runat="server" Text='<%# Eval("PackagingRatio") %>'></asp:Label>

  <br />

  商品条码:<asp:Label ID="Label4" runat="server" Text='<%# Eval("ArticleNum") %>'></asp:Label>

  <br />

  超市价格:<asp:Label ID="Label5" runat="server" Text='<%# Eval("Price") %>'></asp:Label>

  <br />

  <asp:Button ID="btnEdit" runat="server" Text="编辑" CommandName="Edit" />

  <asp:Button ID="btnDelete" runat="server" Text="删除"

  CommandArgument='<%# Eval("PId") %>' CommandName="delete" />

  <br />

  <br />

  <asp:Button ID="Button1" runat="server" CommandArgument='<%# Eval("PId") %>'

  CommandName="Buy" Text="放入购物车" />

  <br />

  </ItemTemplate>

  </asp:DataList>

  <br />

  <br />

  <asp:Button ID="btnFirst" runat="server" onclick="btnFirst_Click"

  Text="|<" />

  <asp:Button ID="btnPrev" runat="server" onclick="btnPrev_Click" Text="<"

  style="height: 21px" />

  <asp:Button ID="btnNext" runat="server" onclick="btnNext_Click" Text=">" />

  <asp:Button ID="btnLast" runat="server" onclick="btnLast_Click" Text=">|" />

  <asp:Label ID="Label1" runat="server"></asp:Label>

  <asp:TextBox ID="txtPageNumber" runat="server" Height="26px" Width="43px"></asp:TextBox>

  <asp:CompareValidator ID="CompareValidator1" runat="server"

  ControlToValidate="txtPageNumber" Display="Dynamic" ErrorMessage="必须为整数!"

  ForeColor="#FF3300" Operator="DataTypeCheck" Type="Integer"></asp:CompareValidator>

  <asp:RangeValidator ID="RangeValidator1" runat="server"

  ControlToValidate="txtPageNumber" Display="Dynamic" ErrorMessage="输入数据不合法!"

  ForeColor="Red" MaximumValue="9" MinimumValue="1"></asp:RangeValidator>

  <asp:Button ID="btnGo" runat="server" onclick="btnGo_Click" Text="Go" />

  <br />

  <asp:HiddenField ID="HiddenField1" runat="server" />

  <asp:HiddenField ID="HiddenField2" runat="server" />

  </div>

  </form>

  </body>

  ---------------------后台:---------------------------

  

复制代码 代码如下:

  protected void Page_Load(object sender, EventArgs e)

  {

  if (!IsPostBack)

  {

  bindProduct(1);

  }

  }

  private void bindProduct(int pageIndex)

  {

  string constr = ConfigurationManager.ConnectionStrings["studentConnectionString"].ConnectionString;

  using (SqlConnection con = new SqlConnection(constr))

  {

  con.Open();

  using (SqlCommand cmd = con.CreateCommand())

  {

  cmd.CommandType = CommandType.StoredProcedure;

  cmd.CommandText = "sp_Product_Select_by_Page_rowNumber";

  cmd.Parameters.AddWithValue("@pageSize", 3);

  cmd.Parameters.Add("@pageCount", System.Data.DbType.Int32).Direction = ParameterDirection.Output;

  cmd.Parameters.AddWithValue("@pageIndex", pageIndex);

  SqlDataAdapter adapter = new SqlDataAdapter(cmd);

  DataTable dt = new DataTable();

  adapter.Fill(dt);

  this.DataList1.DataSource = dt;

  this.DataList1.DataBind();

  int pageCount = Convert.ToInt32(cmd.Parameters["@pageCount"].Value);

  this.HiddenField1.Value = pageCount.ToString();

  this.HiddenField2.Value = pageIndex.ToString();

  }

  }

  }

  protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)

  {

  if (e.CommandName == "Buy")

  {

  Response.Write(e.CommandArgument.ToString());

  }

  }

  protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)

  {

  this.DataList1.EditItemIndex = e.Item.ItemIndex;

  this.bindProduct(1);

  }

  protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e)

  {

  string ProName = (e.Item.FindControl("txtProductName") as TextBox).Text;

  string ProStandarde = (e.Item.FindControl("txtProductStandard") as TextBox).Text;

  string ProPackaging = (e.Item.FindControl("txtPackagingRatio") as TextBox).Text;

  string ProArtialeNum = (e.Item.FindControl("txtArticleNum") as TextBox).Text;

  string ProPrice = (e.Item.FindControl("txtPrice") as TextBox).Text;

  string sql = "update Product set ProductName=@ProductName,ProductStandard=@ProductStandard,PackagingRatio=@PackagingRatio,ArticleNum=@ArticleNum,Price=@Price where PId=@pid";

  SqlParameter[] pms = new SqlParameter[]{

  new SqlParameter("@ProductName",ProName),

  new SqlParameter("@ProductStandard",ProStandarde),

  new SqlParameter("@PackagingRatio",ProPackaging),

  new SqlParameter("@ArticleNum",ProArtialeNum),

  new SqlParameter("@Price",ProPrice),

  new SqlParameter("@pid",e.CommandArgument)

  };

  SQLHelper.ExecuteNonQuery(sql, pms);

  }

  protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)

  {

  this.DataList1.EditItemIndex = -1;

  this.bindProduct(1);

  }

  protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e)

  {

  string sql = "delete from Product where PId=@pid";

  SqlParameter pms = new SqlParameter("@pid", e.CommandArgument);

  SQLHelper.ExecuteNonQuery(sql, pms);

  this.bindProduct(1);

  }

  protected void btnFirst_Click(object sender, EventArgs e)

  {

  this.bindProduct(1);

  }

  protected void btnPrev_Click(object sender, EventArgs e)

  {

  int index = Convert.ToInt32(this.HiddenField2.Value);

  if (index > 1)

  {

  index--;

  this.bindProduct(index);

  }

  }

  protected void btnNext_Click(object sender, EventArgs e)

  {

  int index = Convert.ToInt32(this.HiddenField2.Value);

  int pageCount = Convert.ToInt32(this.HiddenField1.Value);

  if (index<pageCount)

  {

  index++;

  this.bindProduct(index);

  }

  }

  protected void btnLast_Click(object sender, EventArgs e)

  {

  this.bindProduct(Convert.ToInt32(this.HiddenField1.Value));

  }

  protected void btnGo_Click(object sender, EventArgs e)

  {

  if (Convert.ToInt32(txtPageNumber.Text) <= Convert.ToInt32(HiddenField1.Value))

  {

  this.bindProduct(Convert.ToInt32(txtPageNumber.Text));

  }

  else

  {

  Response.Write("您输入的页数超出了总页数,如有需要请重新输入!");

  }

  }

  protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)

  {

  Label1.Text = "第" + (HiddenField2.Value).ToString() + "页,共" + HiddenField1.Value.ToString() + "页";

  }

  ---------------------存储过程-----------------------

  

复制代码 代码如下:

  CREATE PROCEDURE [dbo].[sp_Product_Select_by_Page_rowNumber]

  @pageSize int, --每页记录数量

  @pageCount int output, --总页数

  @pageIndex int --当前页索引号

  AS

  BEGIN

  declare @totalRecords int

  select @totalRecords = count(PId) from Product

  if(@totalRecords % @pageSize = 0)

  set @pageCount = @totalRecords / @pageSize;

  else

  set @pageCount = @totalRecords / @pageSize +1;

  with temp as (select row_number() over (order by PId) as id,* from Product)

  select * from temp where id between (@pageIndex -1)*@pageSize +1 and @pageIndex * @pageSize

  return @totalRecords

  end

  GO

  ----------------Web.config:-------------------

  

复制代码 代码如下:

  <connectionStrings>

  <add name="studentConnectionString" connectionString="Data Source=PC_THINK-THINK;Initial Catalog=student;Persist Security Info=True;User ID=sa;Password=111111"

  providerName="System.Data.SqlClient" />

  </connectionStrings>

  ----------------------SQLHelper类:-------------------------------------

  

复制代码 代码如下:

  public static String connStr = ConfigurationManager.ConnectionStrings["studentConnectionString"].ConnectionString;

  public static int ExecuteNonQuery(string sql, params SqlParameter[] pms)

  {

  using (SqlConnection con = new SqlConnection(connStr))

  {

  using (SqlCommand cmd = new SqlCommand(sql, con))

  {

  if (pms != null)

  {

  cmd.Parameters.AddRange(pms);

  }

  con.Open();

  return cmd.ExecuteNonQuery();

  }

  }

  }

  public static DataTable ExecuteDataTable(string sql, params SqlParameter[] pms)

  {

  DataTable dt = new DataTable();

  SqlDataAdapter adapter = new SqlDataAdapter(sql,connStr);

  if (pms != null)

  {

  adapter.SelectCommand.Parameters.AddRange(pms);

  }

  adapter.Fill(dt);

  return dt;

  }