Tạo Dropdown Menu trong Asp.Net Gridview
(Cách tạo Action Menu trong Gridview) – Đối với các Gridview người lập trình thường để các nút lệnh trên từng dòng để tiện thực hiện thao tác cho người sử dụng. Nhờ các nút lệnh này mà người dùng sẽ không phải mất thêm nhiều thao tác để thực hiện công việc mình mong muốn. Tuy nhiên khi có nhiều nút lệnh thì Gridview sẽ mất nhiều diện tích cho việc hiển thị dữ liệu. Bài viết dưới đây sẽ hướng dẫn các bạn cách tạo Dropdow Menu trong Gridview, mới Menu này sẽ tiết kiệm rất nhiều không gian, chỉ khi kích vào một vùng nào đó thì lúc này Menu mới xuất hiện.
- 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 stored procedure trong SQL Server
USE
[Customers]
GO
CREATE PROCEDURE [dbo].[Pro_Accounts_List]
@Keyword nvarchar(250),
@SortField nvarchar(50),
@SortType nvarchar(10)
AS
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
Go
- 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 DropdownMenuGridView
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 ProcName As String, ByVal ParamArray
Para() As ObjectPara)
As DataTable
Try
Dim tb As
New DataTable
Dim adap As
New SqlDataAdapter(ProcName,
_connectionString)
adap.SelectCommand.CommandType = CommandType.StoredProcedure
If Not
Para Is Nothing
Then
For Each
p As ObjectPara
In Para
adap.SelectCommand.Parameters.Add(New SqlParameter(p.Name, p.Value))
Next
End If
adap.Fill(tb)
Return tb
Catch ex As Exception
Return Nothing
End Try
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 Property
Name() As String
Get
Return _name
End Get
Set(ByVal value As String)
_name = value
End Set
End Property
Public Property
Value() 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: Tạo thư mục Js trong Project
- B7: Download các file css và js tại đây, copy file jquery.dropdown.css vào thư mục Styles
- B8: Copy file js jquery.dropdown.js vào thư mục js
- B9: Copy file action.gif vào thư mục Images Project
- B10: Mở file Default.aspxdưới dạng HTML và nhập mã HTML
<%@ Page
Title="Dropdown
Menu in Asp.Net GridView" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false" EnableEventValidation= "false" CodeBehind="Default.aspx.vb"
Inherits="DropdownMenuGridView._Default"
%>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="updatePanel"
runat="server"
UpdateMode="Conditional">
<ContentTemplate>
<h3>
Dropdown Menu in Asp.Net GridView
</h3>
<table cellpadding="2"
cellspacing="3"
width="100%">
<tr>
<td>
</td>
<td
align="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>
<tr
id="trMessage"
runat="server"
visible="false">
<td
colspan="2">
<asp:Label ID="lblMessage" runat="server" Text="No Data"></asp:Label>
</td>
</tr>
<tr>
<td
colspan="2">
<asp:GridView ID="grvObject" runat="server" AllowPaging="true" PageSize="12"
CssClass="GridStyle"
BorderColor="#cbcbcb"
BorderStyle="solid"
BorderWidth="1"
AutoGenerateColumns="false"
width="100%">
<AlternatingRowStyle CssClass="GridStyle_AltRowStyle"
/>
<HeaderStyle CssClass="GridStyle_HeaderStyle"
/>
<RowStyle CssClass="GridStyle_RowStyle"
/>
<pagerstyle cssclass="GridStyle_pagination"
/>
<Columns>
<asp:TemplateField HeaderText = "Number">
<ItemStyle HorizontalAlign="Center"
Width="2%"></ItemStyle>
<ItemTemplate>
<asp:Label ID="lblRowNumber"
Text='<%# Container.DataItemIndex + 1 %>' runat="server"
/>
<asp:Label ID="lblItemID"
Text='<%# Eval("AccountID") %>' Visible="false"
runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="AccountCode">
<ItemStyle Width="10%"></ItemStyle>
<ItemTemplate>
<span id="spActionMenu"
runat="server"
class="actionmenu">
<asp:Label ID="lblAccountCode"
Text='<%# Eval("AccountCode") %>' runat="server"></asp:Label>
<asp:Image ID="imgActionMenu"
runat="server"></asp:Image>
</span>
<div id="ucdropdownmenu"
runat="server"
class="dropdownmenu
dropdownmenu-tip">
<div class="dropdownmenu-menu">
<asp:DataList id="lstMenu"
cellspacing="0"
cellpadding="0"
RepeatDirection="vertical"
Runat="Server"
Width="100%"
EnableViewState="false">
<ItemTemplate>
<table
cellpadding="0"
cellspacing="0"
width="100%">
<tr>
<td>
<asp:HyperLink id="lnkMenu"
Text='<%# Eval("MenuName") %>' runat="server"
/>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
</div>
</div>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField ItemStyle-Width="15%"
DataField="AccName"
HeaderText="AccountName"
/>
<asp:BoundField ItemStyle-Width="10%"
DataField="AccPhone"
HeaderText="Phone"
/>
<asp:BoundField ItemStyle-Width="10%"
DataField="AccFAX"
HeaderText="FAX"
/>
<asp:BoundField ItemStyle-Width="15%"
DataField="AccEmail"
HeaderText="Email"
/>
</Columns>
</asp:GridView>
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Content>
- B11: Viết Code cho file Default.aspx
'Visit
http://thuthuatlaptrinh.blogspot.com for more ASP.NET Tutorials
Imports System.Data.SqlClient
Namespace DropdownMenuGridView
Public Class _Default
Inherits System.Web.UI.Page
#Region "Private
Members"
#End Region
#Region "Bind Data"
Private Sub BindMenu(ByVal ucMenu As DataList)
Dim dtNew As DataTable = New DataTable()
Dim dtRow As DataRow
dtRow = dtNew.NewRow()
dtNew.Columns.Add("MenuName",
GetType(String))
dtRow("MenuName") = "Edit"
dtNew.Rows.Add(dtRow)
dtRow = dtNew.NewRow()
dtRow("MenuName") = "Delete"
dtNew.Rows.Add(dtRow)
dtRow = dtNew.NewRow()
dtRow("MenuName") = "View"
dtNew.Rows.Add(dtRow)
ucMenu.DataSource = dtNew
ucMenu.DataBind()
End Sub
Private Sub BindAccount()
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
Else
trMessage.Visible = True
grvObject.Visible = False
End If
updatePanel.Update()
End If
End Sub
Private Function
BindData() As DataTable
Dim objSQL As New SqlDataProvider
Dim objBind As DataTable = objSQL.FillTable("Pro_Accounts_List", New ObjectPara("@Keyword", txtSearch.Text.Trim), _
New ObjectPara("@SortField", "CreatedDate"),
_
New ObjectPara("@SortType", "DESC"))
Return objBind
End Function
#End Region
#Region "GridView
Methods"
Private Sub
grvObject_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) Handles
grvObject.RowDataBound
If
(e.Row.RowType = DataControlRowType.DataRow)
Then
Dim ItemID As
Integer = DataBinder.Eval(e.Row.DataItem,
"AccountID")
Dim lstMenu As
DataList = DirectCast(e.Row.FindControl("lstMenu"), DataList)
If
Not lstMenu Is Nothing Then
BindMenu(lstMenu)
End If
Dim imgActionMenu As Image = CType(e.Row.FindControl("imgActionMenu"),
Image)
If Not
imgActionMenu Is Nothing
Then
imgActionMenu.ImageUrl = Page.ResolveUrl("Images\action.gif")
End If
Dim ucdropdownmenu As HtmlGenericControl
= DirectCast(e.Row.FindControl("ucdropdownmenu"), HtmlGenericControl)
If Not
ucdropdownmenu Is Nothing
Then
ucdropdownmenu.ID &= "_"
& ItemID
End If
Dim spActionMenu As HtmlGenericControl = DirectCast(e.Row.FindControl("spActionMenu"),
HtmlGenericControl)
If Not
spActionMenu Is Nothing
Then
spActionMenu.Attributes.Add("data-dropdown",
"#" & ucdropdownmenu.ClientID)
End If
End If
End Sub
Private Sub
grvObject_PageIndexChanging(ByVal sender As Object, ByVal e As
System.Web.UI.WebControls.GridViewPageEventArgs)
Handles grvObject.PageIndexChanging
grvObject.PageIndex = e.NewPageIndex
BindAccount()
End Sub
#End Region
#Region "Event
Handles"
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Me.Load
Try
If Page.IsPostBack = False Then
Page.Form.DefaultButton = cmdQuickSearch.UniqueID
BindAccount()
End If
Catch ex As Exception
End Try
End Sub
Private Sub
cmdQuickSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles
cmdQuickSearch.Click
BindAccount()
End Sub
#End Region
End Class
End Namespace
Sau khi chạy Project, khi click vào các giá trị ở cột AccountCode Menu chức năng xuất hiện và người dùng có thể lựa chọn chức năng để sử dụng.
Chúc các bạn thành công!
Quang Bình
No Comment to " Tạo Dropdown Menu trong Asp.Net Gridview "