(Tạo Master Detail cho Gridview) – Chức năng Master Detail sẽ cho phép người sử dụng quan sát, đánh giá dữ liệu một cách dễ dàng và trực quan nhất. Thông thường để xem các sản phẩm trong 1 đơn hàng, người sử dụng sẽ phải kích vào thông tin 1 đơn hàng, một màn hình mới sẽ xuất hiện hiển thị danh sách các sản phẩm của đơn hàng đó. Và nếu muốn xem thông tin đơn hàng khác, người sử dụng sẽ phải kích nút quay lại màn hình chính. Nhưng với Master Detail không phải mất nhiều thao tác để xem các đơn hàng mong muốn. Bài viết dưới đây sẽ hướng dẫn các bạn cách xây dựng chức năng Master Detail sử dụng ModalPopupExtender trong Gridview.

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- B1: Download CSDL Northwind

- 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.

Imports System.Data.SqlClient

Imports System.Data

Namespace MasterDetailInGridView

Public Class SqlDataProvider

#Region "Membres Prives"

Shared _IsError As Boolean = False

Private _connectionString AsString

#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() AsString

Get

Return _connectionString

End Get

End Property

#End Region

#Region "Functions"

Public FunctionFillTable(ByVal sql AsString) As DataTable

Try

Dim tb AsNew DataTable

Dim adap AsNew SqlDataAdapter(sql, _connectionString)

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

Public FunctionFillTable(ByVal ProcName As String, ByVal ParamArrayPara() As ObjectPara) As DataTable

Try

Dim tb AsNew DataTable

Dim adap AsNew SqlDataAdapter(ProcName, _connectionString)

adap.SelectCommand.CommandType = CommandType.StoredProcedure

If NotPara Is NothingThen

For Eachp As ObjectParaIn Para

adap.SelectCommand.Parameters.Add(New SqlParameter(p.Name, p.Value))

End If

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

Public FunctionRunSQL(ByVal ProcName AsString, ByVal ParamArray Para() As ObjectPara) As Object

Try

Dim _cnn AsNew SqlConnection(_connectionString)

_cnn.Open()

Dim cmd AsNew SqlCommand(ProcName, _cnn)

cmd.CommandType = CommandType.StoredProcedure

For Eachp As ObjectParaIn Para

cmd.Parameters.Add(New SqlParameter(p.Name, p.Value))

Return cmd.ExecuteScalar

Catch ex As Exception

Return Nothing

End Try

End Function

Public FunctionGetRow(ByVal ProcName AsString, ByVal ParamArray Para() As ObjectPara) As DataRow

Try

Dim tb AsNew DataTable

Dim adap AsNew SqlDataAdapter(ProcName, _connectionString)

adap.SelectCommand.CommandType = CommandType.StoredProcedure

For Eachp As ObjectParaIn Para

adap.SelectCommand.Parameters.Add(New SqlParameter(p.Name, p.Value))

adap.Fill(tb)

If tb.Rows.Count Then

Return tb.Rows(0)

End If

Catch ex As Exception

Return Nothing

End Try

Return Nothing

End Function

#End Region

End Class

Public Class ObjectPara

Dim _name As String

Dim _Value As Object

Sub New(ByVal Pname As String, ByVal PValue As Object)

_name = Pname

_Value = PValue

End Sub

Public PropertyName() As String

Get

Return _name

End Get

Set(ByVal value As String)

_name = value

End Set

End Property

Public PropertyValue() As Object

Get

Return _Value

End Get

Set(ByVal value As Object)

_Value = value

End Set

End Property

End Class

Public Class MyEventArgs

Inherits EventArgs

Private Name As String

Private MyId As String

Public PropertySelectedName() As String

Get

ReturnName

End Get

Set(ByVal value As String)

Name = value

End Set

End Property

Public Property Id() As String

Get

Return MyId

End Get

Set(ByVal value As String)

MyId = value

End Set

End Property

End Class

End Namespace

Chú ý: Thuộc tính SiteSqlServer chính là chuỗi Connect với SQL Server trong file Web.Config

- B3: Download thư viện AjaxControlToolkit tại địa chỉ: Download

- B4: Giải nén AjaxControlToolkit.Binary.NET4, và References Ajaxcontroltoolkit.dll trong thư mục vừa giải nén vào Project.

- B5: Download thư viện Bootstrap, giải nén và copy file bootstrap.css vào thư mục Styles trong Project

- B6: Tạo file Button.css trong thư mục Styles và nhập các thông tin phía dưới

.icon-close {

background-image: url(Images/lt.gif);

background-position: center center;

height: 16px;

width: 16px;

}

- B7: Download các file ảnh tại đây, Copy ảnh vào thư mục

- lt.gif vào thư mục Styles\Images

- B8: Tạo thư mục UserControls và thêm file Popup_OrderDetails.ascx, mở file dưới dạng HTML và nhập thông tin phía dưới.

<%@ ControlLanguage="vb"AutoEventWireup="false"CodeBehind="Popup_OrderDetails.ascx.vb"Inherits="MasterDetailInGridView.UserControls.Popup_OrderDetails"%>

<%@ RegisterTagPrefix="cc1"Assembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"%>

<asp:Panel ID="pnlpopup" runat="server" style="display:none">

<asp:UpdatePanel ID="updatePanelPopup"runat="server"UpdateMode="Conditional">

<asp:Button id="cmdShowPopup"runat="server"style="display:none" />

<cc1:ModalPopupExtenderID="ModalPopupExtender_Popup"runat="server"TargetControlID="cmdShowPopup"X="620"Y="150"

PopupControlID="pnlpopup"CancelControlID="cmdCancel"BackgroundCssClass="ModalPopupBG"Drag="True"/>

<divclass="modal"style="width:700px;">

<divclass="modal-dialog">

<asp:label id="lblHeader"runat="server"Text="Orders Detail"></asp:label>

</h4>

</div>

<tr>

<td>

<asp:Label ID="lblItemID"Visible="false"runat="server"/>

</td>

</tr>

<tr>

<td>

<asp:GridView ID="grvObject"runat="server"AllowPaging="true"PageSize="8"

CssClass="GridStyle"BorderColor="#cbcbcb"BorderStyle="solid"

BorderWidth="1"AutoGenerateColumns="false"width="100%">

<AlternatingRowStyleCssClass="GridStyle_AltRowStyle"/>

<HeaderStyleCssClass="GridStyle_HeaderStyle"/>

<RowStyleCssClass="GridStyle_RowStyle"/>

<pagerstylecssclass="GridStyle_pagination"/>

<asp:TemplateField HeaderText="ProductName">

<asp:Label ID="lblProductName"Text='<%# Eval("ProductName") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="UnitPrice">

<ItemStyleHorizontalAlign="Right"width="10%"/>

<asp:Label ID="lblUnitPrice" Text='<%# Eval("UnitPrice") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Quantity">

<ItemStyleHorizontalAlign="Right"width="8%"/>

<asp:Label ID="lblQuantity"Text='<%# Eval("Quantity") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Discount">

<ItemStyleHorizontalAlign="Right"width="8%"/>

<asp:Label ID="lblDiscount"Text='<%# Eval("Discount") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="ExtendedPrice">

<ItemStyleHorizontalAlign="Right"width="10%"/>

<asp:Label ID="lblExtendedPrice"Text='<%# Eval("ExtendedPrice") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</div>

<asp:LinkButton id="cmdCancel"runat="server"CssClass="btn btn-small" Causesvalidation="false">

</asp:LinkButton>

</div>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Panel>

- B9: Nhập Code phía dưới cho file Popup_OrderDetails.ascx

Namespace MasterDetailInGridView.UserControls

Partial Class Popup_OrderDetails

Inherits System.Web.UI.UserControl

#Region "Private Members"

Private _ItemID As Integer

#End Region

#Region "Pulbic Methods"

Public Sub ShowPopup(ByVal ItemID As Integer)

lblItemID.Text = ItemID

grvObject.PageIndex = 0

BindOrderDetail()

updatePanelPopup.Update()

ModalPopupExtender_Popup.Show()

End Sub

#End Region

#Region "Bind Data"

Private SubBindOrderDetail()

Dim objBind As New DataTable

objBind = BindData()

If Not objBind Is Nothing Then

If objBind.Rows.Count > 0 Then

grvObject.DataSource = objBind

grvObject.DataBind()

grvObject.Visible = True

updatePanelPopup.Update()

Else

grvObject.Visible = False

End If

End Sub

Public FunctionBindData() As DataTable

DimobjSQL As New SqlDataProvider

If lblItemID.Text <> ""Then

ItemID = lblItemID.Text

End If

Dim objBind As DataTable = objSQL.FillTable("CustOrdersDetail", New ObjectPara("@OrderID", ItemID))

Return objBind

End Function

#End Region

#Region "GridView Methods"

Private SubgrvObject_PageIndexChanging(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewPageEventArgs) Handles grvObject.PageIndexChanging

grvObject.PageIndex = e.NewPageIndex

ModalPopupExtender_Popup.Show()

BindOrderDetail()

End Sub

#End Region

#Region "Properties"

Public PropertyItemID() As Integer

Get

Return _ItemID

End Get

Set(ByVal Value As Integer)

_ItemID = Value

End Set

End Property

#End Region

#Region "Event Handles"

Private SubcmdNo_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdCancel.Click

ModalPopupExtender_Popup.Hide()

End Sub

Private SubcmdClose_ServerClick(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdClose.ServerClick

ModalPopupExtender_Popup.Hide()

End Sub

#End Region

End Class

End Namespace

- B10: Mở file Site.Master dưới dạng HTML và gắn thêm các css cho Project ngay phía dưới thẻ <link href="~/Styles/Site.css" rel="stylesheet" type="text/css" />
<link href="~/Styles/GridStyle.css" rel="stylesheet" type="text/css" />

<%@ PageTitle="Build Master Detail GridView using ModalPopupExtender in ASP.Net" Language="vb"MasterPageFile="~/Site.Master"AutoEventWireup="false"CodeBehind="Default.aspx.vb"Inherits="MasterDetailInGridView._Default"%>

<%@ RegisterTagPrefix="ModalPopup"TagName="ListRecord"Src="~/UserControls/Popup_OrderDetails.ascx"%>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

<asp:ScriptManager ID="ScriptManager1"runat="server">

</asp:ScriptManager>

<h3>

Build Master Detail GridView using ModalPopupExtender in ASP.Net

</h3>

<br />

<ModalPopup:ListRecord ID="ucOrderDetails"runat="server"/>

<asp:UpdatePanel ID="updatePanel"runat="server"UpdateMode="Conditional">

<trid="trMessage"runat="server"visible="false">

<tdcolspan="2">

<asp:Label ID="lblMessage" runat="server" Text="No Data"></asp:Label>

</td>

</tr>

<tr>

<tdcolspan="2">

<asp:GridView ID="grvObject" runat="server" AllowPaging="true" PageSize="12"

CssClass="GridStyle"BorderColor="#cbcbcb"BorderStyle="solid"

BorderWidth="1"AutoGenerateColumns="false"DataKeyNames="OrderID"width="100%">

<AlternatingRowStyleCssClass="GridStyle_AltRowStyle"/>

<asp:TemplateField HeaderText="Customer">

<asp:LinkButton id="cmdCustomer"runat="server"CausesValidation="False"CommandName="View"CommandArgument='<%# Eval("OrderID") %>' text='<%# Eval("CustomerID") %>'></asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="OrderDate">

<asp:Label ID="lblOrderDate"Text='<%# Eval("OrderDate").ToShortDateString %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="RequiredDate">

<asp:Label ID="lblRequiredDate"Text='<%# Eval("RequiredDate").ToShortDateString %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="ShippedDate">

<asp:Label ID="lblShippedDate"Text='<%# Eval("ShippedDate").ToShortDateString %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="ShipName">

<asp:Label ID="lblShipName"Text='<%# Eval("ShipName") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="ShipAddress">

<asp:Label ID="lblShipAddress"Text='<%# Eval("ShipAddress") %>' runat="server"></asp:Label>

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Content>

- B12: Viết Code cho file Default.aspx

Imports System.IO

Namespace MasterDetailInGridView

Public Class _Default

Inherits System.Web.UI.Page

#Region "Bind Data"

Private SubBindOrder()

Dim objBind As New DataTable

objBind = BindData()

If Not objBind Is Nothing Then

If objBind.Rows.Count > 0 Then

grvObject.DataSource = objBind

grvObject.DataBind()

trMessage.Visible = False

grvObject.Visible = True

updatePanel.Update()

Else

trMessage.Visible = True

grvObject.Visible = False

End If

End Sub

Private FunctionBindData() As DataTable

Dim objSQL As New SqlDataProvider

Dim objBind As DataTable = objSQL.FillTable("Select Orders.* From Orders")

Return objBind

End Function

#End Region

#Region "GridView Methods"

Private SubgrvObject_RowCommand(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewCommandEventArgs) Handles grvObject.RowCommand

Dim ItemID As Integer = Integer.Parse(e.CommandArgument)

Select Casee.CommandName.ToLower

Case "view"

With CType(ucOrderDetails, MasterDetailInGridView.UserControls.Popup_OrderDetails)

.ItemID = ItemID

.ShowPopup(ItemID)

End With

End Select

End Sub

Private SubgrvObject_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) HandlesgrvObject.RowDataBound

If (e.Row.RowType = DataControlRowType.DataRow) Then

Dim cmdCustomer AsLinkButton = DirectCast(e.Row.FindControl("cmdCustomer"), LinkButton)

If NotcmdCustomer Is NothingThen

cmdCustomer.ToolTip = "View Order Details"

End If

End Sub

Private SubgrvObject_PageIndexChanging(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewPageEventArgs) Handles grvObject.PageIndexChanging

grvObject.PageIndex = e.NewPageIndex

BindOrder()

End Sub

#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

BindOrder()

End If

Catch ex As Exception

End Try

End Sub

#End Region

End Class

End Namespace

Bây giờ chạy Project, và mỗi khi kích vào các giá trị ở cột Customer một Popup sẽ xuất hiện như ảnh phía dưới.

Chúc các bạn thành công!

Quang Bình

Tạo Master Detail cho GridView sử dụng ModalPopupExtender trong Asp.net

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