(Sử dụng AJAX HoverMenu trong Gridview) – HoverMenu là một extender trong bộ ASP.NET AJAX có thể được gắn vào bất kỳ WebControl ASP.NET nào. Khi người dùng di chuyển con trỏ chuột qua mỗi hàng của Gridview, một Menu xuất hiện hiển thị các chức năng cần sử dụng. Và người sử dụng chỉ cần kích vào các nút lệnh cần sử dụng khi Menu xuất hiện. Bài viết dưới đây sẽ hướng dẫn các bạn cách nhúng HoverMenu vào Gridview, HoverMenu sẽ gồm các chức năng: Edit, Delete, Update, Cancel.

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- B1: Tạo CSDL Customers trong SQL Server

- B2: Tạo Bảng Accounts có cấu trúc phía dưới

STT	Tên trường	Kiểu trường	Ghi chú
1	AccountID	Int	Trường tự tăng
2	AccountCode	nvarchar(25)
3	AccName	nvarchar(250)
4	AccAddress	nvarchar(250)
5	AccPhone	nvarchar(50)
6	AccFAX	nvarchar(50)
7	AccEmail	nvarchar(50)
8	AccWebsite	nvarchar(150)
9	AccDesc	nvarchar(1500)
10	CreatedDate	datetime
11	ModifiedDate	datetime

- B3: Nhập dữ liệu cho bảng Accounts

- B4: Tạo các stored procedure trong SQL Server

USE[Customers]

CREATE PROCEDURE [dbo].[Pro_Accounts_List]

@Keyword nvarchar(250),

@SortField nvarchar(50),

@SortType nvarchar(10)

declare@strSQL nvarchar(1000)

declare @strWhere nvarchar(500)

declare @strOrder nvarchar (50)

set @strSQL= 'Select * from Accounts'

set @strWhere =' Where 1=1 '

if @Keyword<>''

set @strWhere= @strWhere +' And (AccountCode like N''%' +@Keyword+'%''

Or AccName like N''%' +@Keyword+'%'' Or AccAddress like N''%' +@Keyword+'%''

Or AccPhone like N''%' +@Keyword+'%'' Or AccFAX like N''%' +@Keyword+'%''

Or AccEmail like N''%' +@Keyword+'%'' Or AccWebsite like N''%' +@Keyword+'%'')'

if @SortField='CreatedDate'

Begin

set @strOrder =' Order by CreatedDate'

End

Else

Begin

set @strOrder =' Order by AccName'

End

set @strSQL=@strSQL+@strWhere+@strOrder

print @strSQL

exec sp_executesql @strSQL

CREATE PROCEDURE [dbo].[Pro_Accounts_Delete]

@ItemID int

DELETE FROM Accounts

WHERE AccountID = @ItemID

CREATE PROCEDURE [dbo].[Pro_Accounts_Update]

@AccountID int,

@AccountCode nvarchar(25),

@AccName nvarchar(250),

@AccAddress nvarchar(250),

@AccPhone nvarchar(80),

@AccFAX nvarchar(50),

@AccEmail nvarchar(500),

@AccWebsite nvarchar(150),

@AccDesc nvarchar(2000)

UPDATE Accounts SET

[AccountCode] =@AccountCode

,[AccName] = @AccName

,[AccAddress] = @AccAddress

,[AccPhone] = @AccPhone

,[AccFAX] = @AccFAX

,[AccEmail] = @AccEmail

,[AccWebsite] = @AccWebsite

,[AccDesc] = @AccDesc

,[ModifiedDate] = getdate()

WHERE

[AccountID] =@AccountID

Bạn có thể tải về bảng cơ sở dữ liệu SQL bằng cách nhấn vào liên kết tải về dưới đây

- B5: 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 AJAXHoverMenu

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)

EndIf

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

End Namespace

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

- B6: Download thư viện AjaxControlToolkit tại địa chỉ: Download

- B7: Giải nén AjaxControlToolkit.Binary.NET4, và References Ajaxcontroltoolkit.dll trong thư mục vừa giải nén vào Project.

- B8: Mở file Site.css nhập thêm đoạn Code phía dưới

.NormalRed

{

font-family: Tahoma, Arial, Helvetica;

font-size: 12px;

font-weight: bold;

color: #ff0000;

}

.popupMenu

{

margin : 0px!important;

background-color : White;

color : windowtext;

border : buttonshadow;

border-width : 1px;

border-style : solid;

cursor : 'default';

overflow : auto;

font-family:Calibri;

font-size:13px;

text-align : left;

list-style-type : none;

margin-left:0px;

padding-left:5px;

max-height:150px;

width:auto;

}

- B9: Mở file Default.aspxdưới dạng HTML và bổ xung Control

<%@ PageTitle="AJAX HoverMenu Example in ASP.Net" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false" EnableEventValidation= "false" CodeBehind="Default.aspx.vb"Inherits="AJAXHoverMenu._Default"%>

<%@ RegisterAssembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"TagPrefix="cc1"%>

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

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

</asp:ScriptManager>

<h1>

AJAX HoverMenu Example in ASP.Net

</h1>

<br />

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

<tr>

<td>

</td>

<tdalign="right">

<asp:Label ID="plKeyword" runat="server" Text="Keyword"></asp:Label>

<asp:TextBox ID="txtSearch" CssClass="form-control" ToolTip="Enter Keyword" runat="server" width="200px"></asp:TextBox>

<asp:ImageButton ID="cmdQuickSearch" runat="server" causesvalidation="false" imageurl="~/images/icon_search.gif"></asp:ImageButton>

</td>

</tr>

<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="8"

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

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

<AlternatingRowStyleCssClass="GridStyle_AltRowStyle"/>

<asp:TemplateField>

<asp:Panel CssClass="popupMenu"ID="PopupMenu"runat="server">

<div><asp:LinkButton ID="cmdDelete"runat="server"CommandName="Delete"CommandArgument='<%# Eval("AccountID")%>' Text="Delete"/></div>

</div>

</asp:Panel>

<asp:Panel ID="Panel9" runat="server">

<tr>

<tdalign="left"width="10%">

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

</td>

<tdalign="left"width="20%">

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

</td>

<tdalign="left"width="15%">

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

</td>

<tdwidth="15%">

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

</td>

<tdwidth="15%">

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

</td>

<tdalign="left"width="15%">

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

</td>

</tr>

</table>

</asp:Panel>

<cc1:HoverMenuExtender ID="hme2" runat="Server"

HoverCssClass="popupHover"

PopupControlID="PopupMenu"

PopupPosition="Left"

TargetControlID="Panel9"

PopDelay="25"/>

</ItemTemplate>

<asp:Panel ID="Panel9" runat="server"Width="96%">

<tr>

<tdwidth="15%">Code:<br />

<asp:Label ID="lblAccountID"Visible="false"runat="server"Text='<%# Eval("AccountID") %>' />

<asp:TextBox ID="txtAccountCode"runat="server"Text='<%# Bind("AccountCode") %>' Width="100" />

<asp:RequiredFieldValidatorID="valAccountCode"CssClass="NormalRed"runat="server"ControlToValidate="txtAccountCode"Display="dynamic"ErrorMessage="Enter Code"></asp:RequiredFieldValidator>

</td>

<tdwidth="25%">Name:<br />

<asp:TextBox ID="txtAccName"runat="server"Text='<%# Bind("AccName") %>' Width="180" />

</td>

<td width="15%">Phone:<br />

<asp:TextBox ID="txtAccPhone"runat="server"Text='<%# Bind("AccPhone") %>' Width="80" />

</td>

<tdwidth="15%">Fax:<br />

<asp:TextBox ID="txtFax" runat="server"Text='<%# Bind("AccFAX") %>' Width="100" />

</td>

<tdwidth="15%">Website:<br />

<asp:TextBox ID="txtWebsite"runat="server"Text='<%# Bind("AccWebsite") %>' Width="150" />

</td>

<tdwidth="12%">Email:<br />

<asp:TextBox ID="txtEmail"runat="server"Text='<%# Bind("AccEmail") %>' Width="150" />

</td>

</tr>

</table>

</asp:Panel>

<cc1:HoverMenuExtender ID="hme1" runat="Server"

TargetControlID="Panel9"

PopupControlID="PopupMenu"

HoverCssClass="popupHover"

PopupPosition="Right"/>

<asp:Panel ID="PopupMenu"runat="server"CssClass="popupMenu"Width="80">

<asp:LinkButton ID="cmdUpdate"runat="server"CausesValidation="True"CommandName="Update"Text="Update"/>

<br/>

<asp:LinkButton ID="cmdCancel"runat="server"CausesValidation="False"CommandName="Cancel"Text="Cancel"/>

</div>

</asp:Panel>

</EditItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Content>

- B10: Viết Code cho file Default.aspx

Imports AjaxControlToolkit

Namespace AJAXHoverMenu

Public Class _Default

Inherits System.Web.UI.Page

#Region "Private Methods"

Private SubDeleteAccount(ByVal ItemID As Integer)

Dim objSQL As New SqlDataProvider

objSQL.RunSQL("Pro_Accounts_Delete", New ObjectPara("@ItemID", ItemID))

BindAccount()

End Sub

Private SubUpdateAccount(ByVal ItemID As Integer, ByVal AccountCode As String, ByVal AccName As String, ByVal AccPhone As String, ByVal AccFAX As String, _

ByVal AccWebsite As String, ByValAccEmail As String)

Dim objSQL As New SqlDataProvider

objSQL.RunSQL("Pro_Accounts_Update", New ObjectPara("@AccountID", ItemID), _

New ObjectPara("@AccountCode", AccountCode), _

New ObjectPara("@AccName", AccName), _

New ObjectPara("@AccAddress", ""), _

New ObjectPara("@AccPhone", AccPhone), _

New ObjectPara("@AccFAX", AccFAX), _

New ObjectPara("@AccEmail", AccEmail), _

New ObjectPara("@AccWebsite", AccWebsite), _

New ObjectPara("@AccDesc", ""))

BindAccount()

End Sub

#End Region

#Region "Bind Data"

Private SubBindAccount()

Dim objBind As New DataTable

objBind = BindData(txtSearch.Text)

If Not objBind Is Nothing Then

If objBind.Rows.Count > 0 Then

grvObject.DataSource = objBind

grvObject.DataBind()

trMessage.Visible = False

grvObject.Visible = True

Else

trMessage.Visible = True

grvObject.Visible = False

End If

updatePanel.Update()

End If

End Sub

Public Shared Function BindData(ByValKeyword As String) As DataTable

Dim objSQL As New SqlDataProvider

Dim objBind As DataTable = objSQL.FillTable("Pro_Accounts_List", New ObjectPara("@Keyword", Keyword.Trim), _

New ObjectPara("@SortField", "CreatedDate"), _

New ObjectPara("@SortType", "DESC"))

Return objBind

End Function

#End Region

#Region "GridView Methods"

Private SubgrvObject_RowUpdating(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewUpdateEventArgs) Handles grvObject.RowUpdating

With grvObject

Dim ItemID AsInteger = -1

Dim lblAccountID As Label = DirectCast(.Rows(e.RowIndex).FindControl("lblAccountID"), Label)

Dim txtAccountCode As TextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtAccountCode"), TextBox)

Dim txtAccName AsTextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtAccName"), TextBox)

Dim txtAccPhone AsTextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtAccPhone"), TextBox)

Dim txtFax AsTextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtFax"), TextBox)

Dim txtWebsite AsTextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtWebsite"), TextBox)

Dim txtEmail AsTextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtEmail"), TextBox)

If NotlblAccountID Is NothingAnd lblAccountID.Text <> "" Then

ItemID = lblAccountID.Text

End If

If NottxtAccountCode Is NothingAnd NottxtAccName Is NothingAnd NottxtAccPhone Is Nothing_

And NottxtFax Is NothingAnd NottxtWebsite Is NothingAnd NottxtEmail Is NothingThen

UpdateAccount(ItemID, txtAccountCode.Text, txtAccName.Text, txtAccPhone.Text, txtFax.Text, txtWebsite.Text, txtEmail.Text)

grvObject.EditIndex = -1

BindAccount()

End If

End With

End Sub

Private SubgrvObject_RowDataBound(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewRowEventArgs) Handles grvObject.RowDataBound

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

Dim cmdDelete AsLinkButton = CType(e.Row.FindControl("cmdDelete"), LinkButton)

If cmdDelete IsNotNothing Then

cmdDelete.Attributes.Add("onClick", "javascript:return confirm('"& "Are you sure you want to delete?"& "');")

cmdDelete.ToolTip = "Delete Account"

End If

End Sub

Private SubgrvObject_RowDeleting(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewDeleteEventArgs) Handles grvObject.RowDeleting

Dim ItemID As Integer = CType(grvObject.DataKeys(e.RowIndex).Value, Integer)

If ItemID <> -1 Then

DeleteAccount(ItemID)

End If

End Sub

Private SubgrvObject_RowCancelingEdit(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewCancelEditEventArgs) Handles grvObject.RowCancelingEdit

grvObject.EditIndex = -1

BindAccount()

End Sub

Private SubgrvObject_RowEditing(ByVal sender As Object, ByVal e AsSystem.Web.UI.WebControls.GridViewEditEventArgs) Handles grvObject.RowEditing

grvObject.EditIndex = e.NewEditIndex

BindAccount()

End Sub

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

grvObject.PageIndex = e.NewPageIndex

BindAccount()

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

'Default Submit Button

Page.Form.DefaultButton = cmdQuickSearch.UniqueID

BindAccount()

End If

Catch ex As Exception

End Try

End Sub

Private SubcmdQuickSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdQuickSearch.Click

BindAccount()

End Sub

#End Region

End Class

End Namespace

Bây giờ chạy Project bạn sẽ có kết quả như ảnh phía dưới.

Chúc các bạn thành công!

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Nhúng Control AJAX HoverMenu vào GridView trong Asp.net

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