在 asp 转发器中进行寻呼时遇到问题
Having trouble with paging in asp repeater
我有这个 aspx 代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SearchCustomer.aspx.cs" Inherits="WebApplication1.eyeofheaven.SearchCustomer" %>
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta name="viewport" content="width = device-width, initial-scale = 1.0, minimum-scale = 1.0, maximum-scale = 1.0, user-scalable = no" />
<!-- Stylesheets -->
<link rel="stylesheet" type="text/css" href="StyleSheets/SearchCustomerStyle.css">
<link rel="stylesheet" href="Plugins/bootstrap-3.3.4-dist/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- Pagination Script -->
<!--Customer Script-->
<script src="JavaScripts/SearchCustomerJavascript.js"></script>
<title>Search Customer</title>
</head>
<body>
<div class="container">
<div class="row">
<form id="Form1" class="form1" runat="server">
<div class="row">
<div class="twelve columns">
<!-- Header-->
<div class="container">
<nav role="navigation" class="navbar navbar-inverse navbar-fixed-top">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" data-target="#navbarCollapse" data-toggle="collapse" class="navbar-toggle">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<!-- Collection of nav links, forms, and other content for toggling -->
<div id="navbarCollapse" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="EyeOfHeaven.aspx">Home</a></li>
<li class="dropdown">
<a data-toggle="dropdown" class="dropdown-toggle active" href="#">Search<b class="caret"></b></a>
<ul role="menu" class="dropdown-menu">
<li><a href="SearchCustomer.aspx">Search Form(Customer)</a></li>
<li><a href="SearchVehicle.aspx">Search Form(Vehicle)</a></li>
</ul>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
<!-- Search form customer-->
<div id="searchcustomer" class="page-header">
<h3><span class="glyphicon glyphicon-th-large"></span>Search Customer</h3>
</div>
<div class="row">
<div class="col-md-4">
<input type="text" runat="server" id="search" size="20" class="form-control" placeholder="Customer ID">
</div>
<div class="col-md-4">
<select class="form-control" runat="server" id="Country">
<option value="select" selected disabled>Search by Country</option>
<option value="A:C ESTUDIO">A:C ESTUDIO</option>
<option value="Aaron McEwen-194712">Aaron McEwen-194712</option>
<option value="Accra">Accra</option>
<option value="Adoany">Adoany</option>
<option value="Aduanas">Aduanas</option>
<option value="Alex Sanchez-259029">Alex Sanchez-259029</option>
<option value="ALG Consulting-288078">ALG Consulting-288078</option>
<option value="Algeria">Algeria</option>
<option value="Algimantas Ramaskevicius">Algimantas Ramaskevicius</option>
<option value="Allan Demeritte-233953">Allan Demeritte-233953</option>
<option value="Althea Gibson-223990">Althea Gibson-223990</option>
<option value="Alvaro Delgado-279974">Alvaro Delgado-279974</option>
<option value="Amber Williamsen-212332">Amber Williamsen-212332</option>
<option value="Amos Peters-217784">Amos Peters-217784</option>
<option value="andersongordon-234453">andersongordon-234453</option>
<option value="Andrey Bolshakov-189544">Andrey Bolshakov-189544</option>
<option value="Angela green-220269">Angela green-220269</option>
<option value="ANGELMILLER-179184">ANGELMILLER-179184</option>
<option value="Angola">Angola</option>
<option value="Anguilla">Anguilla</option>
<option value="Anthony Knight-235064">Anthony Knight-235064</option>
<option value="Antigua and Barbuda">Antigua and Barbuda</option>
</select>
</div>
<div class="col-md-4">
<select class="form-control" runat="server" id="Currency">
<option value="selected" selected disabled>Search by Currency</option>
<option value="AUD">AUD (Australian Dollar)</option>
<option value="EUR">EUR (Euro)</option>
<option value="GBP">GBP (United Kingdom Pounds)</option>
<option value="JPY">JPY (Japan Yen)</option>
<option value="NZD">NZD (New Zealand Dollar)</option>
<option value="USD">USD (United States Dollar)</option>
</select>
</div>
</div>
<div class="row">
<div class="col-md-4">
<button type="button" runat="server" onserverclick="Button1_Click" id="searchinfo" class="btn btn-primary"><span class="glyphicon glyphicon-search"></span>Search Info</button>
<button type="button" runat="server" onserverclick="Button2_Click" id="Button2" class="btn btn-danger"><span class="glyphicon glyphicon-repeat"></span>Reset</button>
</div>
</div>
<hr style="border-top: dotted 1px;" />
<!-- Information Table-->
<div class="row">
<asp:Repeater runat="server" ID="repeater">
<ItemTemplate>
<div class="col-md-8">
<div id="panelmain" class="panel panel-default">
<div id="panel-heading" class="panel-heading">
<h3 id="name" align="center" class="panel-title"><%# String.Format("{0} {1}", DataBinder.Eval(Container.DataItem, "Firstname").ToString(), DataBinder.Eval(Container.DataItem, "Lastname").ToString()) %></h3>
</div>
<div id="panelbody" class="panel-body">
<ul class="list-unstyled">
<li>
<span class="spanlist">IDCustomer : </span><%# DataBinder.Eval(Container.DataItem, "IDCustomer").ToString() %>
</li>
<li>
<span class="spanlist">IDAccountManager : </span><%# DataBinder.Eval(Container.DataItem, "IDAccountManager").ToString() %>
</li>
<li>
<span class="spanlist">IDBillingAddress : </span><%# DataBinder.Eval(Container.DataItem, "IDBillingAddress").ToString() %>
</li>
<li>
<span class="spanlist">IDCountry : </span><%# DataBinder.Eval(Container.DataItem, "IDCountry").ToString() %>
</li>
<li>
<span class="spanlist">IDCredit : </span><%# DataBinder.Eval(Container.DataItem, "IDCredit").ToString() %>
</li>
<li>
<span class="spanlist">IDFrequency : </span><%# DataBinder.Eval(Container.DataItem, "IDFrequency").ToString() %>
</li>
<li>
<span class="spanlist">IDOwner : </span><%# DataBinder.Eval(Container.DataItem, "IDOwner").ToString() %>
</li>
<li>
<span class="spanlist">IDPort : </span><%# DataBinder.Eval(Container.DataItem, "IDPort").ToString() %>
</li>
<li>
<span class="spanlist">IDSite : </span><%# DataBinder.Eval(Container.DataItem, "IDSite").ToString() %>
</li>
<li>
<span class="spanlist">IDRecipient : </span><%# DataBinder.Eval(Container.DataItem, "IDRecipient").ToString() %>
</li>
<li>
<span class="spanlist">AccessType : </span><%# DataBinder.Eval(Container.DataItem, "AccessType").ToString() %>
</li>
<li>
<span class="spanlist">Active : </span><%# DataBinder.Eval(Container.DataItem, "Active").ToString() %>
</li>
</ul>
</div>
</div>
</div>
</ItemTemplate>
</asp:Repeater>
</div>
<div>
<asp:LinkButton ID="linkPrevious" runat="server" NavigateUrl="~/SearchCustomer.aspx" Font-Bold="true" OnClick="linkPrevious_Click">Prev Page</asp:LinkButton>
<asp:LinkButton ID="linkNext" runat="server" NavigateUrl="~/SearchCustomer.aspx" Font-Bold="true" OnClick="linkNext_Click">Next Page</asp:LinkButton>
</div>
</form>
</body>
</html>
及其后面的aspx代码：
using MSSQLConnector;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Services.Description;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1.eyeofheaven
{
public partial class SearchCustomer : System.Web.UI.Page
{
public static string query = null;
private int cnt;
private DataSet selectedData;
private DataTable dt;
private MSConnector connector = new MSConnector();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//Function for BindRepeater
BindRepeater();
}
protected void Button2_Click(object sender, EventArgs e)
{
this.repeater.Visible = false;
this.search.Value = "";
this.Country.Value = "select";
this.Currency.Value = "selected";
}
//This property will contain the current page number
public int PageNumber
{
get
{
if (ViewState["PageNumber"] != null)
{
return Convert.ToInt32(ViewState["PageNumber"]);
}
else
{
return 0;
}
}
set { ViewState["PageNumber"] = value; }
}
//Asp:ListView
private void BindRepeater()
{
//ConnectionString for accessing into MSSql
connector.ConnectionString = "SERVER=xbetasql,52292;UID=username;Password=secret;DATABASE=ATDBSQL;";
//Get the values from id's
string customer = (this.search.Value);
string country = (this.Country.Value);
string idcurrency = (this.Currency.Value);
//Conditions for query
if (country != "select")
{
if (idcurrency != "selected")
{
query = "select * from customer where country = '" + country + "' and idcurrency = '" + idcurrency + "'";
}
else
{
query = "select * from customer where country = '" + country + "'";
}
}
else if (idcurrency != "selected")
{
query = "select * from customer where idcurrency = '" + idcurrency + "'";
}
else if ((this.search.Value) == customer)
{
query = "select * from customer where idcustomer = '" + customer + "'";
}
else if (customer == "")
{
Response.Write("<script>alert('No Id Inputted, Data Not Found.')</script>");
}
//DataSet and DataTable (get the data and display it into asp:repeater
selectedData = connector.ExecuteQuery(query);
dt = selectedData.Tables[0];
//Set PageData Settings
PagedDataSource pagedData = new PagedDataSource();
pagedData.DataSource = dt.DefaultView;
pagedData.AllowPaging = true;
pagedData.PageSize = 3;
pagedData.CurrentPageIndex = PageNumber;
int vcnt = cnt / pagedData.PageSize;
if (PageNumber < 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber > 0)
{
linkPrevious.Visible = true;
}
if (PageNumber == vcnt)
{
linkNext.Visible = false;
}
else if(PageNumber < vcnt)
{
linkNext.Visible = true;
}
//Binding the repeater
repeater.Visible = true;
repeater.DataSource = pagedData;
repeater.DataBind();
//Binding the repeater
}
protected void linkNext_Click(object sender, EventArgs e)
{
PageNumber += 1;
BindRepeater();
}
protected void linkPrevious_Click(object sender, EventArgs e)
{
PageNumber -= 1;
BindRepeater();
}
}
}
我的asp:LinkButton，在我第一次打开我的网页时无法在我的转发器中进行分页，asp:linkbutton 在那里，但是当搜索并显示我页面中的所有数据时，链接按钮是消失了，尽管它显示了我搜索过的数据。 但问题是分页似乎不起作用。我的代码似乎有什么问题？这是 link 作为我的代码的参考。
我是 c# 编程（webform）的新手，我对 c# 中的分页知之甚少。
因为
int vcnt = cnt / pagedData.PageSize;
'cnt' 你还没有设置，所以它总是零，这就是为什么 'vcnt' 会归零。
这就是为什么您的 link 在搜索内容后总是会显示 false 的原因。
所以解决方案是
int vcnt = dt.DefaultView.Count / pagedData.PageSize;
希望这能解决您的问题
快乐编码:)
我做对了:)
这是分页代码：
using MSSQLConnector;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Services.Description;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1.eyeofheaven
{
public partial class SearchCustomer : System.Web.UI.Page
{
public static string query = null;
private int cnt;
private DataSet selectedData;
private DataTable dt;
private MSConnector connector = new MSConnector();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//Function for BindRepeater
BindRepeater();
}
protected void Button2_Click(object sender, EventArgs e)
{
this.repeater.Visible = false;
this.linkPrevious.Visible = false;
this.linkNext.Visible = false;
this.search.Value = "";
this.Country.Value = "select";
this.Currency.Value = "selected";
}
//This property will contain the current page number
public int PageNumber
{
get
{
if (ViewState["PageNumber"] != null)
{
return Convert.ToInt32(ViewState["PageNumber"]);
}
else
{
return 0;
}
}
set { ViewState["PageNumber"] = value; }
}
//Asp:ListView
private void BindRepeater()
{
//ConnectionString for accessing into MSSql
connector.ConnectionString = "SERVER=xbetasql,52292;UID=username;Password=secret;DATABASE=ATDBSQL;";
//Get the values from id's
string customer = (this.search.Value);
string country = (this.Country.Value);
string idcurrency = (this.Currency.Value);
//Conditions for query
if (customer != "")
{
query = "select * from customer where idcustomer = '" + customer + "'";
}
else if (country != "select")
{
if (idcurrency != "selected")
{
query = "select * from customer where country = '" + country + "' and idcurrency = '" + idcurrency + "'";
}
else
{
query = "select * from customer where country = '" + country + "'";
}
}
else if (idcurrency != "selected")
{
query = "select * from customer where idcurrency = '" + idcurrency + "'";
}
else if (customer == "")
{
Response.Write("<script>alert('No Id Inputted, Data Not Found.')</script>");
}
else
{
Response.Write("<script>alert('Invalid input.')</script>");
}
//DataSet and DataTable (get the data and display it into asp:repeater
selectedData = connector.ExecuteQuery(query);
dt = selectedData.Tables[0];
//Set PageData Settings
PagedDataSource pagedData = new PagedDataSource();
pagedData.DataSource = dt.DefaultView;
pagedData.AllowPaging = true;
//Set to 2 pages to be viewed
pagedData.PageSize = 2;
pagedData.CurrentPageIndex = PageNumber;
//Count to 2 pages to appear when clicking next or previous
int vcnt = dt.DefaultView.Count / pagedData.PageSize;
if (PageNumber == 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber < 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber > 0)
{
linkPrevious.Visible = true;
}
if (PageNumber == vcnt)
{
linkNext.Visible = false;
}
//Hide previous and next if it is firstpage and lastpage
else if(PageNumber < vcnt)
{
linkNext.Visible = !pagedData.IsLastPage;
linkPrevious.Visible = !pagedData.IsFirstPage;
}
//Binding the repeater
if (dt.Rows.Count > 0)
{
repeater.Visible = true;
repeater.DataSource = pagedData;
repeater.DataBind();
}
else
{
Response.Write("<script>alert('No Data Found.')</script>");
}
}
protected void linkNext_Click(object sender, EventArgs e)
{
linkNext.Visible = true;
PageNumber += 1;
BindRepeater();
}
protected void linkPrevious_Click(object sender, EventArgs e)
{
linkPrevious.Visible = true;
PageNumber -= 1;
BindRepeater();
}
}
}
希望这是程序员之间的一个很好的参考。 :)
我有这个 aspx 代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="SearchCustomer.aspx.cs" Inherits="WebApplication1.eyeofheaven.SearchCustomer" %>
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta name="viewport" content="width = device-width, initial-scale = 1.0, minimum-scale = 1.0, maximum-scale = 1.0, user-scalable = no" />
<!-- Stylesheets -->
<link rel="stylesheet" type="text/css" href="StyleSheets/SearchCustomerStyle.css">
<link rel="stylesheet" href="Plugins/bootstrap-3.3.4-dist/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- Pagination Script -->
<!--Customer Script-->
<script src="JavaScripts/SearchCustomerJavascript.js"></script>
<title>Search Customer</title>
</head>
<body>
<div class="container">
<div class="row">
<form id="Form1" class="form1" runat="server">
<div class="row">
<div class="twelve columns">
<!-- Header-->
<div class="container">
<nav role="navigation" class="navbar navbar-inverse navbar-fixed-top">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" data-target="#navbarCollapse" data-toggle="collapse" class="navbar-toggle">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<!-- Collection of nav links, forms, and other content for toggling -->
<div id="navbarCollapse" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="EyeOfHeaven.aspx">Home</a></li>
<li class="dropdown">
<a data-toggle="dropdown" class="dropdown-toggle active" href="#">Search<b class="caret"></b></a>
<ul role="menu" class="dropdown-menu">
<li><a href="SearchCustomer.aspx">Search Form(Customer)</a></li>
<li><a href="SearchVehicle.aspx">Search Form(Vehicle)</a></li>
</ul>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
<!-- Search form customer-->
<div id="searchcustomer" class="page-header">
<h3><span class="glyphicon glyphicon-th-large"></span>Search Customer</h3>
</div>
<div class="row">
<div class="col-md-4">
<input type="text" runat="server" id="search" size="20" class="form-control" placeholder="Customer ID">
</div>
<div class="col-md-4">
<select class="form-control" runat="server" id="Country">
<option value="select" selected disabled>Search by Country</option>
<option value="A:C ESTUDIO">A:C ESTUDIO</option>
<option value="Aaron McEwen-194712">Aaron McEwen-194712</option>
<option value="Accra">Accra</option>
<option value="Adoany">Adoany</option>
<option value="Aduanas">Aduanas</option>
<option value="Alex Sanchez-259029">Alex Sanchez-259029</option>
<option value="ALG Consulting-288078">ALG Consulting-288078</option>
<option value="Algeria">Algeria</option>
<option value="Algimantas Ramaskevicius">Algimantas Ramaskevicius</option>
<option value="Allan Demeritte-233953">Allan Demeritte-233953</option>
<option value="Althea Gibson-223990">Althea Gibson-223990</option>
<option value="Alvaro Delgado-279974">Alvaro Delgado-279974</option>
<option value="Amber Williamsen-212332">Amber Williamsen-212332</option>
<option value="Amos Peters-217784">Amos Peters-217784</option>
<option value="andersongordon-234453">andersongordon-234453</option>
<option value="Andrey Bolshakov-189544">Andrey Bolshakov-189544</option>
<option value="Angela green-220269">Angela green-220269</option>
<option value="ANGELMILLER-179184">ANGELMILLER-179184</option>
<option value="Angola">Angola</option>
<option value="Anguilla">Anguilla</option>
<option value="Anthony Knight-235064">Anthony Knight-235064</option>
<option value="Antigua and Barbuda">Antigua and Barbuda</option>
</select>
</div>
<div class="col-md-4">
<select class="form-control" runat="server" id="Currency">
<option value="selected" selected disabled>Search by Currency</option>
<option value="AUD">AUD (Australian Dollar)</option>
<option value="EUR">EUR (Euro)</option>
<option value="GBP">GBP (United Kingdom Pounds)</option>
<option value="JPY">JPY (Japan Yen)</option>
<option value="NZD">NZD (New Zealand Dollar)</option>
<option value="USD">USD (United States Dollar)</option>
</select>
</div>
</div>
<div class="row">
<div class="col-md-4">
<button type="button" runat="server" onserverclick="Button1_Click" id="searchinfo" class="btn btn-primary"><span class="glyphicon glyphicon-search"></span>Search Info</button>
<button type="button" runat="server" onserverclick="Button2_Click" id="Button2" class="btn btn-danger"><span class="glyphicon glyphicon-repeat"></span>Reset</button>
</div>
</div>
<hr style="border-top: dotted 1px;" />
<!-- Information Table-->
<div class="row">
<asp:Repeater runat="server" ID="repeater">
<ItemTemplate>
<div class="col-md-8">
<div id="panelmain" class="panel panel-default">
<div id="panel-heading" class="panel-heading">
<h3 id="name" align="center" class="panel-title"><%# String.Format("{0} {1}", DataBinder.Eval(Container.DataItem, "Firstname").ToString(), DataBinder.Eval(Container.DataItem, "Lastname").ToString()) %></h3>
</div>
<div id="panelbody" class="panel-body">
<ul class="list-unstyled">
<li>
<span class="spanlist">IDCustomer : </span><%# DataBinder.Eval(Container.DataItem, "IDCustomer").ToString() %>
</li>
<li>
<span class="spanlist">IDAccountManager : </span><%# DataBinder.Eval(Container.DataItem, "IDAccountManager").ToString() %>
</li>
<li>
<span class="spanlist">IDBillingAddress : </span><%# DataBinder.Eval(Container.DataItem, "IDBillingAddress").ToString() %>
</li>
<li>
<span class="spanlist">IDCountry : </span><%# DataBinder.Eval(Container.DataItem, "IDCountry").ToString() %>
</li>
<li>
<span class="spanlist">IDCredit : </span><%# DataBinder.Eval(Container.DataItem, "IDCredit").ToString() %>
</li>
<li>
<span class="spanlist">IDFrequency : </span><%# DataBinder.Eval(Container.DataItem, "IDFrequency").ToString() %>
</li>
<li>
<span class="spanlist">IDOwner : </span><%# DataBinder.Eval(Container.DataItem, "IDOwner").ToString() %>
</li>
<li>
<span class="spanlist">IDPort : </span><%# DataBinder.Eval(Container.DataItem, "IDPort").ToString() %>
</li>
<li>
<span class="spanlist">IDSite : </span><%# DataBinder.Eval(Container.DataItem, "IDSite").ToString() %>
</li>
<li>
<span class="spanlist">IDRecipient : </span><%# DataBinder.Eval(Container.DataItem, "IDRecipient").ToString() %>
</li>
<li>
<span class="spanlist">AccessType : </span><%# DataBinder.Eval(Container.DataItem, "AccessType").ToString() %>
</li>
<li>
<span class="spanlist">Active : </span><%# DataBinder.Eval(Container.DataItem, "Active").ToString() %>
</li>
</ul>
</div>
</div>
</div>
</ItemTemplate>
</asp:Repeater>
</div>
<div>
<asp:LinkButton ID="linkPrevious" runat="server" NavigateUrl="~/SearchCustomer.aspx" Font-Bold="true" OnClick="linkPrevious_Click">Prev Page</asp:LinkButton>
<asp:LinkButton ID="linkNext" runat="server" NavigateUrl="~/SearchCustomer.aspx" Font-Bold="true" OnClick="linkNext_Click">Next Page</asp:LinkButton>
</div>
</form>
</body>
</html>
及其后面的aspx代码：
using MSSQLConnector;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Services.Description;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1.eyeofheaven
{
public partial class SearchCustomer : System.Web.UI.Page
{
public static string query = null;
private int cnt;
private DataSet selectedData;
private DataTable dt;
private MSConnector connector = new MSConnector();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//Function for BindRepeater
BindRepeater();
}
protected void Button2_Click(object sender, EventArgs e)
{
this.repeater.Visible = false;
this.search.Value = "";
this.Country.Value = "select";
this.Currency.Value = "selected";
}
//This property will contain the current page number
public int PageNumber
{
get
{
if (ViewState["PageNumber"] != null)
{
return Convert.ToInt32(ViewState["PageNumber"]);
}
else
{
return 0;
}
}
set { ViewState["PageNumber"] = value; }
}
//Asp:ListView
private void BindRepeater()
{
//ConnectionString for accessing into MSSql
connector.ConnectionString = "SERVER=xbetasql,52292;UID=username;Password=secret;DATABASE=ATDBSQL;";
//Get the values from id's
string customer = (this.search.Value);
string country = (this.Country.Value);
string idcurrency = (this.Currency.Value);
//Conditions for query
if (country != "select")
{
if (idcurrency != "selected")
{
query = "select * from customer where country = '" + country + "' and idcurrency = '" + idcurrency + "'";
}
else
{
query = "select * from customer where country = '" + country + "'";
}
}
else if (idcurrency != "selected")
{
query = "select * from customer where idcurrency = '" + idcurrency + "'";
}
else if ((this.search.Value) == customer)
{
query = "select * from customer where idcustomer = '" + customer + "'";
}
else if (customer == "")
{
Response.Write("<script>alert('No Id Inputted, Data Not Found.')</script>");
}
//DataSet and DataTable (get the data and display it into asp:repeater
selectedData = connector.ExecuteQuery(query);
dt = selectedData.Tables[0];
//Set PageData Settings
PagedDataSource pagedData = new PagedDataSource();
pagedData.DataSource = dt.DefaultView;
pagedData.AllowPaging = true;
pagedData.PageSize = 3;
pagedData.CurrentPageIndex = PageNumber;
int vcnt = cnt / pagedData.PageSize;
if (PageNumber < 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber > 0)
{
linkPrevious.Visible = true;
}
if (PageNumber == vcnt)
{
linkNext.Visible = false;
}
else if(PageNumber < vcnt)
{
linkNext.Visible = true;
}
//Binding the repeater
repeater.Visible = true;
repeater.DataSource = pagedData;
repeater.DataBind();
//Binding the repeater
}
protected void linkNext_Click(object sender, EventArgs e)
{
PageNumber += 1;
BindRepeater();
}
protected void linkPrevious_Click(object sender, EventArgs e)
{
PageNumber -= 1;
BindRepeater();
}
}
}
我的asp:LinkButton，在我第一次打开我的网页时无法在我的转发器中进行分页，asp:linkbutton 在那里，但是当搜索并显示我页面中的所有数据时，链接按钮是消失了，尽管它显示了我搜索过的数据。 但问题是分页似乎不起作用。我的代码似乎有什么问题？这是 link 作为我的代码的参考。
我是 c# 编程（webform）的新手，我对 c# 中的分页知之甚少。
因为
int vcnt = cnt / pagedData.PageSize;
'cnt' 你还没有设置，所以它总是零，这就是为什么 'vcnt' 会归零。 这就是为什么您的 link 在搜索内容后总是会显示 false 的原因。
所以解决方案是
int vcnt = dt.DefaultView.Count / pagedData.PageSize;
希望这能解决您的问题
快乐编码:)
我做对了:) 这是分页代码：
using MSSQLConnector;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Services.Description;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplication1.eyeofheaven
{
public partial class SearchCustomer : System.Web.UI.Page
{
public static string query = null;
private int cnt;
private DataSet selectedData;
private DataTable dt;
private MSConnector connector = new MSConnector();
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
//Function for BindRepeater
BindRepeater();
}
protected void Button2_Click(object sender, EventArgs e)
{
this.repeater.Visible = false;
this.linkPrevious.Visible = false;
this.linkNext.Visible = false;
this.search.Value = "";
this.Country.Value = "select";
this.Currency.Value = "selected";
}
//This property will contain the current page number
public int PageNumber
{
get
{
if (ViewState["PageNumber"] != null)
{
return Convert.ToInt32(ViewState["PageNumber"]);
}
else
{
return 0;
}
}
set { ViewState["PageNumber"] = value; }
}
//Asp:ListView
private void BindRepeater()
{
//ConnectionString for accessing into MSSql
connector.ConnectionString = "SERVER=xbetasql,52292;UID=username;Password=secret;DATABASE=ATDBSQL;";
//Get the values from id's
string customer = (this.search.Value);
string country = (this.Country.Value);
string idcurrency = (this.Currency.Value);
//Conditions for query
if (customer != "")
{
query = "select * from customer where idcustomer = '" + customer + "'";
}
else if (country != "select")
{
if (idcurrency != "selected")
{
query = "select * from customer where country = '" + country + "' and idcurrency = '" + idcurrency + "'";
}
else
{
query = "select * from customer where country = '" + country + "'";
}
}
else if (idcurrency != "selected")
{
query = "select * from customer where idcurrency = '" + idcurrency + "'";
}
else if (customer == "")
{
Response.Write("<script>alert('No Id Inputted, Data Not Found.')</script>");
}
else
{
Response.Write("<script>alert('Invalid input.')</script>");
}
//DataSet and DataTable (get the data and display it into asp:repeater
selectedData = connector.ExecuteQuery(query);
dt = selectedData.Tables[0];
//Set PageData Settings
PagedDataSource pagedData = new PagedDataSource();
pagedData.DataSource = dt.DefaultView;
pagedData.AllowPaging = true;
//Set to 2 pages to be viewed
pagedData.PageSize = 2;
pagedData.CurrentPageIndex = PageNumber;
//Count to 2 pages to appear when clicking next or previous
int vcnt = dt.DefaultView.Count / pagedData.PageSize;
if (PageNumber == 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber < 1)
{
linkPrevious.Visible = false;
}
else if (PageNumber > 0)
{
linkPrevious.Visible = true;
}
if (PageNumber == vcnt)
{
linkNext.Visible = false;
}
//Hide previous and next if it is firstpage and lastpage
else if(PageNumber < vcnt)
{
linkNext.Visible = !pagedData.IsLastPage;
linkPrevious.Visible = !pagedData.IsFirstPage;
}
//Binding the repeater
if (dt.Rows.Count > 0)
{
repeater.Visible = true;
repeater.DataSource = pagedData;
repeater.DataBind();
}
else
{
Response.Write("<script>alert('No Data Found.')</script>");
}
}
protected void linkNext_Click(object sender, EventArgs e)
{
linkNext.Visible = true;
PageNumber += 1;
BindRepeater();
}
protected void linkPrevious_Click(object sender, EventArgs e)
{
linkPrevious.Visible = true;
PageNumber -= 1;
BindRepeater();
}
}
}
希望这是程序员之间的一个很好的参考。 :)