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Datalist控件使用存储过程来分页实现代码

转载 作者：qq735679552 更新时间：2022-09-29 22:32:09 30 4
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--------------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;  }  。

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