ASP.NET(vb.net) & DataGrid - AllowSorting and AllowPaging/Pagination

Author: admin | Posted: 06-06-2010 | Category: ASP.NET(vb.net) & DataGrid Control

ASP.NET(vb.net) & DataGrid - AllowSorting and AllowPaging/Pagination Example scripts how to Explains DataGrid control in asp.net , Binding the datasource to DataGrid control and example enabled AllowSorting and AllowPaging.

ShotDev Focus:
- ASP.NET(vb.net) & DataGrid - AllowSorting and AllowPaging

Example

DataGridAllowSortingAllowPaging.aspx


<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>
<%@ Page Language="VB" %>
<script runat="server">
Dim strFields As String = "CustomerID"
Sub Page_Load(sender As Object, e As EventArgs)
IF Not Page.IsPostBack() Then
BindData()
End IF
End Sub

Sub BindData()

Dim objConn As New OleDbConnection
Dim objCmd As New OleDbCommand
Dim dtAdapter As New OleDbDataAdapter
Dim ds As New DataSet
Dim strConnString,strSQL As String

strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="&Server.MapPath("database/mydatabase.mdb")&";"
strSQL = "SELECT * FROM customer ORDER BY " & strFields & " ASC"

objConn.ConnectionString = strConnString
With objCmd
.Connection = objConn
.CommandText = strSQL
.CommandType = CommandType.Text
End With
dtAdapter.SelectCommand = objCmd

dtAdapter.Fill(ds)

'*** BindData to DataGrid ***'
myDataGrid.DataSource = ds
myDataGrid.DataBind()

dtAdapter = Nothing
objConn.Close()
objConn = Nothing

End Sub

Sub ShowPageCommand(sender As Object, e As DataGridPageChangedEventArgs)
myDataGrid.CurrentPageIndex = e.NewPageIndex
BindData()
End Sub

Sub SortCommand(s As Object, e As DataGridSortCommandEventArgs)
strFields = e.SortExpression
BindData()
End Sub

Private Sub myDataGrid_ItemDataBound(sender As Object, e As DataGridItemEventArgs)
'*** CustomerID ***'
Dim lblCustomerID As Label = CType(e.Item.FindControl("lblCustomerID"),Label)
IF Not IsNothing(lblCustomerID) Then
lblCustomerID.Text = e.Item.DataItem("CustomerID")
End IF

'*** Name ***'
Dim lblName As Label = CType(e.Item.FindControl("lblName"),Label)
IF Not IsNothing(lblName) Then
lblName.Text = e.Item.DataItem("Name")
End IF

'*** Email ***'
Dim lblEmail As Label = CType(e.Item.FindControl("lblEmail"),Label)
IF Not IsNothing(lblEmail) Then
lblEmail.Text = e.Item.DataItem("Email")
End IF

'*** CountryCode ***'
Dim lblCountryCode As Label = CType(e.Item.FindControl("lblCountryCode"),Label)
IF Not IsNothing(lblCountryCode) Then
lblCountryCode.Text = e.Item.DataItem("CountryCode")
End IF

'*** Budget ***'
Dim lblBudget As Label = CType(e.Item.FindControl("lblBudget"),Label)
IF Not IsNothing(lblBudget) Then
lblBudget.Text = FormatNumber(e.Item.DataItem("Budget"),2)
End IF

'*** Used ***'
Dim lblUsed As Label = CType(e.Item.FindControl("lblUsed"),Label)
IF Not IsNothing(lblUsed) Then
lblUsed.Text = FormatNumber(e.Item.DataItem("Used"),2)
End IF
End Sub

</script>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<form id="form1" runat="server">
<asp:DataGrid id="myDataGrid" runat="server"  PageSize="2" onSortCommand="SortCommand"
OnPageIndexChanged="ShowPageCommand" AllowPaging="True"  AllowSorting="True"
AutoGenerateColumns="False" onItemDataBound="myDataGrid_ItemDataBound">

<Columns>

<asp:TemplateColumn SortExpression="CustomerID"  HeaderText="CustomerID">
<ItemTemplate>
<asp:Label id="lblCustomerID" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

<asp:TemplateColumn SortExpression="Name" HeaderText="Name">
<ItemTemplate>
<asp:Label id="lblName" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

<asp:TemplateColumn SortExpression="Email" HeaderText="Email">
<ItemTemplate>
<asp:Label id="lblEmail" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

<asp:TemplateColumn SortExpression="CountryCode" HeaderText="CountryCode">
<ItemTemplate>
<asp:Label id="lblCountryCode" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

<asp:TemplateColumn SortExpression="Budget" HeaderText="Budget">
<ItemTemplate>
<asp:Label id="lblBudget" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

<asp:TemplateColumn SortExpression="Used" HeaderText="Used">
<ItemTemplate>
<asp:Label id="lblUsed" runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>

</Columns>
</asp:DataGrid>
</form>
</body>
</html>

Create a asp.net file and save to path root-path/dotnet/

Run
http://localhost/dotnet/DataGridAllowSortingAllowPaging.aspx

Screenshot

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