发布于 2016-06-05 00:45:07 | 91 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的精品教程,程序狗速度看过来!

ASP.NET

ASP.NET 是.NET FrameWork的一部分,是一项微软公司的技术,是一种使嵌入网页中的脚本可由因特网服务器执行的服务器端脚本技术,它可以在通过HTTP请求文档时再在Web服务器上动态创建它们。 指 Active Server Pages(动态服务器页面) ,运行于 IIS(Internet Information Server 服务,是Windows开发的Web服务器)之中的程序 。


.net使用过程中,数据多的时候需要分页,本文将介绍如何使用存储过程来分页,需要的朋友可以了解下
--------------前台:-------------------
 
<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:---------------------------
 
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-----------------------
 
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:-------------------
 
<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:-------------------------------------
 
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; 
} 


最新网友评论  共有(0)条评论 发布评论 返回顶部

Copyright © 2007-2017 PHPERZ.COM All Rights Reserved   冀ICP备14009818号  版权声明  广告服务