(Set default page size DataTables in Asp.net) – Khi sử dụng jQuery DataTables để hiển thị dữ liệu, mặc định danh sách lựa chọn kích thước trang sẽ bao gồm: 10, 25, 50 và mặc định số lượng bản ghi/trang là 10. Vậy jQuery DataTables có cho phép bổ xung và thay đổi kích thước trang không? Bài viết dưới đây sẽ hướng dẫn các bạn thay đổi danh sách và lựa chọn mặc định 1 giá trị trong danh sách này.
- B1: Download CSDL Northwind tại đây và thực hiện công việc Restore Data.
- B3: Mở file Site.Master dạng HTML và bổ xung đoạn mã phía dưới trong thẻ Head
- B1: Download CSDL Northwind tại đây và thực hiện công việc Restore Data.
- B2: Tạo Project trong Microsoft Visual Studio 2010
Trong Visual Studio tạo 1 Class có tên: Utility và nhập đoạn Code phía dưới cho Class này.
C# Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
namespace PageSizeAndScrollerofDataTables
{
public class SqlDataProvider
{
#region "Membres Prives"
private string _connectionString;
#endregion
#region "Constructeurs"
public SqlDataProvider()
{
try
{
_connectionString = ConfigurationManager.ConnectionStrings["SiteSqlServer"].ConnectionString;
}
catch
{
}
}
#endregion
#region "Proprietes"
public string ConnectionString
{
get { return _connectionString; }
}
#endregion
#region "Functions"
public DataTable FillTable(string sql)
{
try
{
DataTable tb = new DataTable();
SqlDataAdapter adap = new SqlDataAdapter(sql, _connectionString);
adap.Fill(tb);
return tb;
}
catch
{
return null;
}
}
#endregion
}
}
VB.NET Code
Imports System.Data.SqlClient
Imports System.Data
Namespace PageSizeAndScrollerofDataTables
Public Class SqlDataProvider
#Region "Membres Prives"
Shared _IsError As Boolean = False
Private _connectionString As String
#End Region
#Region "Constructeurs"
Public Sub New()
Try
_connectionString = ConfigurationManager.ConnectionStrings("SiteSqlServer").ConnectionString
_IsError = False
Catch ex As Exception
_IsError = True
End Try
End Sub
#End Region
#Region "Proprietes"
Public ReadOnly Property ConnectionString() As String
Get
Return _connectionString
End Get
End Property
#End Region
#Region "Functions"
Public Function FillTable(ByVal sql As String) As DataTable
Try
Dim tb As New DataTable
Dim adap As New SqlDataAdapter(sql, _connectionString)
adap.Fill(tb)
Return tb
Catch ex As Exception
Return Nothing
End Try
End Function
#End Region
End Class
End Namespace
- B3: Mở file Site.Master dạng HTML và bổ xung đoạn mã phía dưới trong thẻ Head
<head id="Head1" runat="server">
<title>Page Size and Scroller of DataTables in Asp.net</title>
<link href="Styles/Site.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.9/css/dataTables.bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/responsive/1.0.7/css/responsive.bootstrap.min.css" />
<script type="text/javascript" language="javascript" src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
<script type="text/javascript" language="javascript" src="https://cdn.datatables.net/1.10.9/js/jquery.dataTables.min.js"></script>
<script type="text/javascript" language="javascript" src="https://cdn.datatables.net/1.10.9/js/dataTables.bootstrap.min.js"></script>
<script type="text/javascript" language="javascript" src="https://cdn.datatables.net/responsive/1.0.7/js/dataTables.responsive.min.js"></script>
<asp:ContentPlaceHolder ID="HeadContent" runat="server">
</asp:ContentPlaceHolder>
</head>
- B4: Mở file Default.aspx dưới dạng HTML và nhập mã HTML
<%@ PageTitle="Page Size and Scroller of DataTables in Asp.net" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="PageSizeAndScrollerofDataTables._Default"%>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:ScriptManager ID="ScriptManager1"runat="server">
</asp:ScriptManager>
<div class="panel panel-default">
<div class="panel-heading">
<h3>Page Size and Scroller of DataTables in Asp.net</h3>
</div>
<div class="panel-body">
<asp:Repeater ID="dlObject"runat="server">
<HeaderTemplate>
<tableid="tblData"class="table table-striped table-bordered" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr>
<th align="center">CompanyName</th>
<th align="center">ContactName</th>
<th align="center">ContactTitle</th>
<th align="center">Address</th>
<th align="center">City</th>
</tr>
</thead>
<tbody>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td align="left"><%# Eval("CompanyName")%></td>
<td align="left"><%# Eval("ContactName")%></td>
<td align="left"><%# Eval("ContactTitle")%></td>
<td align="left"><%# Eval("Address")%></td>
<td align="left"><%# Eval("City")%></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</tbody>
</table>
</FooterTemplate>
</asp:Repeater>
</div>
</div>
<script type="text/javascript">
function pageLoad() {
$('#tblData').dataTable({
scrollY: 400,
deferRender: true,
scroller: true,
"lengthMenu": [[25, 50, 75, 100, -1], [25, 50, 75, 100, "All"]],
"iDisplayLength": 50
});
};
</script>
</asp:Content>- B5: Viết Code cho file Default.aspx
C# Code
//Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Web.UI;
using System.Web.Caching;
namespace PageSizeAndScrollerofDataTables
{
public partial class _Default : System.Web.UI.Page
{
#region"Bind Data"
private voidBindData()
{
DataTable objBind = newDataTable();
objBind = GetData();
dlObject.DataSource = objBind;
dlObject.DataBind();
}
private DataTableGetData()
{
SqlDataProvider objSQL = newSqlDataProvider();
DataTable objBind = null;
//Caching
if (Cache["Cache_Customers"] == null)
{
objBind = objSQL.FillTable("SELECT CustomerID,CompanyName,ContactName,ContactTitle,Address,City From Customers");
Cache["Cache_Customers"] = objBind;
}
else
{
objBind = (DataTable)Cache["Cache_Customers"];
}
return objBind;
}
#endregion
#region"Event Handles"
protected voidPage_Load(object sender, System.EventArgs e)
{
try
{
if (!IsPostBack)
{
BindData();
}
}
catch
{
}
}
#endregion
}
}VB.NET Code
'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials
'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials
Namespace PageSizeAndScrollerofDataTables
Public Class _Default
Inherits System.Web.UI.Page
#Region "Bind Data"
Private SubBindData()
Dim objBind As New DataTable
objBind = GetData()
dlObject.DataSource = objBind
dlObject.DataBind()
End Sub
Private FunctionGetData() As DataTable
Dim objSQL As New SqlDataProvider
Dim objBind As DataTable
'Caching
If Cache("Cache_Customers") Is Nothing Then
objBind = objSQL.FillTable("SELECT CustomerID,CompanyName,ContactName,ContactTitle,Address,City From Customers")
Cache("Cache_Customers") = objBind
Else
objBind = CType(Cache("Cache_Customers"), DataTable)
End If
Return objBind
End Function
#End Region
#Region "Event Handles"
Protected SubPage_Load(ByVal sender AsObject, ByVal e As System.EventArgs) Handles Me.Load
Try
If Page.IsPostBack = False Then
BindData()
End If
Catch ex As Exception
End Try
End Sub
#End Region
End Class
Chúc các bạn thành công!
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