<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="JQSuiteASPNETExample.examples.loading_data.million_sql._default" %>
<%@ Register Assembly="Trirand.Web" TagPrefix="trirand" Namespace="Trirand.Web.UI.WebControls" %>
<!DOCTYPE html>
<html lang="en-us">
<head id="Head1" runat="server">
<meta charset="utf-8">
<title>jqGrid for ASP.NET WebForms - million rows of data from SQL</title>
<!-- The jQuery UI theme that will be used by the grid -->
<link rel="stylesheet" type="text/css" media="screen" href="http://code.jquery.com/ui/1.12.1/themes/redmond/jquery-ui.css" />
<!-- The jQuery UI theme extension jqGrid needs -->
<link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />
<!-- jQuery runtime minified -->
<script src="/js/jquery-3.2.1.min.js" type="text/javascript"></script>
<!-- The localization file we need, English in this case -->
<script src="/js/trirand/i18n/grid.locale-en.js" type="text/javascript"></script>
<!-- The jqGrid client-side javascript -->
<script src="/js/trirand/jquery.jqGrid.min.js" type="text/javascript"></script>
<style type="text/css">
body, html { font-size: 80%; }
</style>
</head>
<body>
<form id="form1" runat="server">
<trirand:JQGrid runat="server" ID="JQGrid2" Width="680px" OnDataRequesting="JQGrid2_DataRequesting" OnSearching="JQGrid2_Searching">
<Columns>
<trirand:JQGridColumn DataField="OrderID" Width="50" Searchable="false" />
<trirand:JQGridColumn DataField="OrderDate" DataFormatString="{0:d}" Width="100" Searchable="false" />
<trirand:JQGridColumn DataField="CustomerID" Width="100" Searchable="true" SearchControlID="CustomerIDDdl" SearchType="DropDown"
SearchToolBarOperation="IsEqualTo" DataType="String" />
<trirand:JQGridColumn DataField="Freight" Width="75" Searchable="true"
SearchToolBarOperation="IsGreaterOrEqualTo" SearchValues="[All]:[All];10:> 10;20:> 20;50:> 50;100:> 100"
SearchType="DropDown" DataType="Decimal"/>
<trirand:JQGridColumn DataField="ShipName" Searchable="true" SearchToolBarOperation="Contains" DataType="String" />
</Columns>
<PagerSettings PageSize="10" PageSizeOptions="[10,20,50]" />
<ToolBarSettings ShowSearchToolBar="true" ShowSearchButton="true" ShowRefreshButton="true" />
</trirand:JQGrid>
<asp:SqlDataSource runat="server" ID="SqlDataSource2"
ConnectionString="<%$ ConnectionStrings:SQL2008_661086_trirandEntities %>"
SelectCommand="SELECT DISTINCT [CustomerID] FROM [OrdersLarge]">
</asp:SqlDataSource>
<asp:DropDownList runat="server" ID="CustomerIDDdl" DataSourceID="SqlDataSource2"
DataTextField="CustomerID"
DataValueField="CustomerID"
AppendDataBoundItems="true">
<asp:ListItem Text="[All]" Value="[All]"></asp:ListItem>
</asp:DropDownList>
<br /><br />
<asp:RadioButtonList runat="server" ID="ExportType"
style="font-size: 125%; font-family: Tahoma;" >
<asp:ListItem Text="Export All Data" Value="1"></asp:ListItem>
<asp:ListItem Text="Export Only Filtered Data" Value="2"></asp:ListItem>
<asp:ListItem Text="Export Only Filtered & Paged Data" Value="3"></asp:ListItem>
</asp:RadioButtonList>
<br /><br />
<asp:Button runat="server" ID="ExportToExcelButton" Text="Export to Excel" OnClick="ExportToExcelButton_Click" />
<br /><br />
<trirand:codetabs runat="server" id="tabs"></trirand:codetabs>
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
using Trirand.Web.UI.WebControls;
namespace JQSuiteASPNETExample.examples.loading_data.million_sql
{
public partial class _default : System.Web.UI.Page
{
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
}
public void JQGrid2_Searching(object sender, Trirand.Web.UI.WebControls.JQGridSearchEventArgs e)
{
if (e.SearchString == "[All]")
e.Cancel = true;
}
public void JQGrid2_DataRequesting(object sender, Trirand.Web.UI.WebControls.JQGridDataRequestEventArgs e)
{
string orderByColumn;
if (!String.IsNullOrEmpty(e.SortExpression))
orderByColumn = e.SortExpression + " " + e.SortDirection.ToString();
else
orderByColumn = "OrderID ASC";
e.TotalRows = GetRowCount(orderByColumn, e.SearchExpression);
DataTable dt = GetData(JQGrid2.PagerSettings.PageSize,
(e.NewPageIndex - 1) * JQGrid2.PagerSettings.PageSize,
orderByColumn,
e.SearchExpression);
JQGrid2.DataSource = dt;
JQGrid2.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
if (JQGrid2.AjaxCallBackMode != AjaxCallBackMode.None)
{
// save the last grid state in session - to be used for exporting
Session["gridFilterPageState"] = JQGrid2.GetState();
}
}
protected DataTable GetData(int pageSize, int startIndex, string orderByColumn, string searchExpression)
{
// Create a new Sql Connection and set connection string accordingly
SqlConnection sqlConnection = new SqlConnection();
sqlConnection.ConnectionString = ConfigurationManager.ConnectionStrings["SQL2008_661086_trirandEntities"].ConnectionString;
sqlConnection.Open();
string sql = @"
SELECT * FROM
(
SELECT row_number() OVER
({0})
AS
rownum, OrderID, CustomerID, OrderDate, Freight, ShipName
FROM
OrdersLarge
{1}
)
AS A
WHERE A.rownum BETWEEN {2} AND {3}";
string orderClause = String.IsNullOrEmpty(orderByColumn) ? String.Empty : "ORDER BY " + orderByColumn;
string whereClause = String.IsNullOrEmpty(searchExpression) ? String.Empty : "WHERE " + searchExpression;
sql = String.Format(sql, orderClause, whereClause, startIndex + 1, startIndex + pageSize);
SqlCommand cmd = new SqlCommand(sql, sqlConnection);
// Create a SqlDataAdapter to get the results as DataTable
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(cmd);
// Create a new DataTable
DataTable dtResult = new DataTable();
// Fill the DataTable with the result of the SQL statement
sqlDataAdapter.Fill(dtResult);
sqlConnection.Close();
return dtResult;
}
protected int GetRowCount(string orderByColumn, string searchExpression)
{
// Create a new Sql Connection and set connection string accordingly
SqlConnection sqlConnection = new SqlConnection();
sqlConnection.ConnectionString = ConfigurationManager.ConnectionStrings["SQL2008_661086_trirandEntities"].ConnectionString;
sqlConnection.Open();
string sql = @"
SELECT COUNT(*) FROM
(
SELECT row_number() OVER
({0})
AS
rownum, OrderID, CustomerID, OrderDate, Freight, ShipName
FROM
OrdersLarge
{1}
) AS A";
string orderClause = String.IsNullOrEmpty(orderByColumn) ? String.Empty : " ORDER BY " + orderByColumn;
string whereClause = String.IsNullOrEmpty(searchExpression) ? String.Empty : " WHERE " + searchExpression;
sql = String.Format(sql, orderClause, whereClause);
SqlCommand cmd = new SqlCommand(sql, sqlConnection);
int count = (int) cmd.ExecuteScalar();
sqlConnection.Close();
return count;
}
protected void ExportToExcelButton_Click(object sender, EventArgs e)
{
JQGridState gridState = Session["gridFilterPageState"] as JQGridState;
switch (ExportType.SelectedValue)
{
case "1":
JQGrid2.ExportSettings.ExportDataRange = ExportDataRange.All;
JQGrid2.ExportToExcel("export.xls");
break;
case "2":
JQGrid2.ExportSettings.ExportDataRange = ExportDataRange.Filtered;
JQGrid2.ExportToExcel("export.xls", gridState);
break;
case "3":
JQGrid2.ExportSettings.ExportDataRange = ExportDataRange.FilteredAndPaged;
JQGrid2.ExportToExcel("export.xls", gridState);
break;
}
}
}
}
Switch theme:
Theming is based on the very popular jQuery
ThemeRoller standard. This is the same theming mechanism used by jQuery UI and is now a de-facto standard for jQuery based components.
The benefits of using ThemeRoller are huge. We can offer a big set of ready to use themes created by professional designers, including Windows-like themes (Redmond), Apple-like theme (Cupertino), etc.
In addition to that any jQuery UI controls on the same page will pick the same theme.
Last, but not least, you can always roll your own ThemeRoller theme, using the superb
Theme Editor
To use a theme, simply reference 2 Css files in your Html <head> section - the ThemeRoller theme you wish to use, and the jqGrid own ThemeRoller Css file. For example (Redmond theme):
<link rel="stylesheet" type="text/css" media="screen" href="/themes/redmond/jquery-ui-1.8.2.custom.css" />
<link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />