(Thay đổi động loạt nhiều giá trị từ Checkbox trên Gridview) – Trên Gridview là danh sách các sản phẩm có những loại khác nhau, thông thường nếu cần thay đổi loại của sản phẩm, người sử dụng sẽ sửa sản phẩm đó và thay đổi loại. Nếu trong trường hợp cần thay đổi nhiều sản phẩm người sử dụng sẽ phải mất nhiều thao tác, nhiều thời gian để thực hiện. Vậy làm sao để có thể thay đổi đồng loạt loại cho những sản phẩm được chọn, bài viết dưới đây sẽ hướng dẫn các bạn làm việc đó.
- B1: Download CSDL Northwind
- B1: Download CSDL Northwind
- B2: Tạo các stored procedure trong SQL Server
USE [Northwind]
GO
CREATE PROCEDURE [dbo].[Pro_Products_List]
@Keyword nvarchar(250),
@SupplierID int,
@CategoryID int
AS
declare@strSQL nvarchar(1000)
declare @strWhere nvarchar(500)
declare @strOrder nvarchar (50)
set @strSQL= 'SELECT Products.ProductID, Products.ProductName, Products.SupplierID, Suppliers.CompanyName, Products.CategoryID,
Categories.CategoryName, Products.QuantityPerUnit, Products.UnitPrice, Products.UnitsInStock,
Products.UnitsOnOrder, Products.ReorderLevel, Products.Discontinued
FROM Products INNER JOIN
Suppliers ON Products.SupplierID = Suppliers.SupplierID INNER JOIN
Categories ON Products.CategoryID = Categories.CategoryID'
set @strWhere =' Where 1=1 '
if @Keyword<>''
set @strWhere= @strWhere +' And (ProductName like N''%' +@Keyword+'%'')'
if@SupplierID <>-1
set @strWhere=@strWhere + ' and (Products.SupplierID='+ convert(nvarchar,@SupplierID) + ')'
if@CategoryID <>-1
set @strWhere=@strWhere + ' and (Products.CategoryID='+ convert(nvarchar,@CategoryID) + ')'
set @strOrder =' Order by Products.ProductName'
set @strSQL=@strSQL+@strWhere+@strOrder
print @strSQL
exec sp_executesql @strSQL
Go
create PROCEDURE [dbo].[Pro_Products_UpdateByCategory]
@ProductID int,
@CategoryID int
AS
UPDATE Products SET
CategoryID = @CategoryID
WHERE
ProductID = @ProductID
GoBạn có thể tải về bảng cơ sở dữ liệu SQL bằng cách nhấn vào liên kết tải về dưới đây
- B3: 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 UpdateDatabaseOnCheckboxChangeGridview
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 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))
Next
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))
Next
Return cmd.ExecuteScalar
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 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
- B4: Download thư viện AjaxControlToolkit tại địa chỉ: Download
- B5: Giải nén AjaxControlToolkit.Binary.NET4, và References Ajaxcontroltoolkit.dll trong thư mục vừa giải nén vào Project.
- B6: Tạo thư mục UserControls
- B7: Tạo file Popup_ChangeCategory.ascx trong thư mục vừa tạo, mở file Popup_ChangeCategory.ascx dưới dạng HTML và nhập mã HTML
<%@ ControlLanguage="vb"AutoEventWireup="false"CodeBehind="Popup_ChangeCategory.ascx.vb"Inherits="UpdateMultipleValuesfromCheckBoxtoDatabase.UserControls.Popup_ChangeCategory"%>
<%@ RegisterTagPrefix="cc1"Assembly="AjaxControlToolkit"Namespace="AjaxControlToolkit"%>
<asp:Panel ID="pnlpopup" runat="server" style="display:none">
<asp:UpdatePanel ID="updatePanelPopup"runat="server"UpdateMode="Conditional">
<ContentTemplate>
<asp:Button id="cmdShowPopup"runat="server"style="display:none" />
<cc1:ModalPopupExtenderID="ModalPopupExtender_Popup"runat="server"TargetControlID="cmdShowPopup"X="720"Y="220"
PopupControlID="pnlpopup"CancelControlID="cmdCancel"BackgroundCssClass="ModalPopupBG"Drag="True"/>
<divclass="modal"style="width:400px;">
<divclass="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" id="cmdClose" runat="server" causesvalidation="false" class="close" data-dismiss="modal" aria-hidden="true">x</button>
<h4 class="modal-title">
<asp:label id="lblHeader" runat="server" Text="Change Category"></asp:label>
</h4>
</div>
<div class="modal-body">
<table width="100%"cellpadding="2"cellspacing="3">
<tr>
<td>
<asp:label id="plCategory"runat="server"CssClass="label"Text="Category"></asp:label>
<asp:Label ID="lblListItem"runat="server"Visible="false"></asp:Label>
</td>
<td>
<asp:DropDownList ID="ddlCategory"CssClass="form-control"runat="server"Width="300px"></asp:DropDownList>
</td>
</tr>
</table>
</div>
<div class="modal-footer">
<div class="btn-group">
<asp:LinkButton id="cmdUpdate"runat="server"CssClass="btn btn-small" Causesvalidation="true">
<i class="icon-update"></i> <asp:label id="lblUpdate" runat="server" Text="Update"></asp:label>
</asp:LinkButton>
<asp:LinkButton id="cmdCancel"runat="server"CssClass="btn btn-small" Causesvalidation="false">
<i class="icon-close"></i> <asp:label id="lblClose" runat="server" Text="Close"></asp:label>
</asp:LinkButton>
</div>
</div>
</div>
</div>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Panel> - B8: Viết Code cho file Popup_ChangeCategory.ascx
NamespaceUpdateMultipleValuesfromCheckBoxtoDatabase.UserControls
Partial Class Popup_ChangeCategory
Inherits System.Web.UI.UserControl
#Region "Event Click"
Public Delegate Sub MyEventHandler(ByVal sender As Object, ByVal e As MyEventArgs)
Public EventOnSelectedRow As MyEventHandler
#End Region
#Region "Private Methods"
Private SubUpdateRecord(ByVal CategoryID As Integer)
Dim objSQL As New SqlDataProvider
If lblListItem.Text <> ""Then
For EachsProduct As StringIn lblListItem.Text.Split(",")
If sProduct <> "" Then
objSQL.RunSQL("Pro_Products_UpdateByCategory", New ObjectPara("@ProductID", sProduct), _
New ObjectPara("@CategoryID", CategoryID))
End If
Next
End If
End Sub
#End Region
#Region "Pulbic Methods"
Public Sub ShowPopup(ByVal ListItem As String)
LoadComboData()
lblListItem.Text = ListItem
updatePanelPopup.Update()
ModalPopupExtender_Popup.Show()
End Sub
#End Region
#Region "Data Combo"
Private SubLoadDropDownList(ByVal ucControl As DropDownList, ByVal DataValueField AsString, ByValDataTextField As String, ByVal sql As String)
Dim objSQL As New SqlDataProvider
Dim objBind As DataTable = objSQL.FillTable(sql)
ucControl.Items.Clear()
If Not objBind Is Nothing Then
With ucControl
.DataTextField = DataTextField
.DataValueField = DataValueField
.DataSource = objBind
.DataBind()
End With
End If
End Sub
Private SubLoadComboData()
Dim sSQL As String = "Select CategoryID,CategoryName From Categories"
LoadDropDownList(ddlCategory, "CategoryID", "CategoryName", sSQL)
End Sub
#End Region
#Region "Event Handles"
Private SubcmdUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdUpdate.Click
Dim MyArgs As New MyEventArgs()
DimCategoryID As Integer= -1
If ddlCategory.SelectedValue <> -1 Then
CategoryID = ddlCategory.SelectedValue
UpdateRecord(CategoryID)
MyArgs.Id = CategoryID
RaiseEvent OnSelectedRow(Me, MyArgs)
ModalPopupExtender_Popup.Hide()
End If
End Sub
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
- B9: Mở file Default.aspxdưới dạng HTML và nhập mã HTML
<%@ PageTitle="Update Multiple Values from CheckBox to Database in Asp.net" Language="vb"MasterPageFile="~/Site.Master"AutoEventWireup="false"EnableEventValidation="false" CodeBehind="Default.aspx.vb" Inherits="UpdateMultipleValuesfromCheckBoxtoDatabase._Default"%>
<%@ RegisterTagPrefix="ModalPopup"TagName="ChangeCategory"Src="~/UserControls/Popup_ChangeCategory.ascx"%>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:ScriptManager ID="ScriptManager1"runat="server">
</asp:ScriptManager>
<h3>
Update Multiple Values from CheckBox to Database in Asp.net
</h3>
<ModalPopup:ChangeCategory ID="ucChangeCategory"runat="server"/>
<asp:UpdatePanel ID="updatePanel"runat="server"UpdateMode="Conditional">
<ContentTemplate>
<table cellpadding="2"cellspacing="3"width="100%">
<tr>
<td>
<asp:LinkButton id="cmdChange" runat="server" CssClass="btn btn-small" CausesValidation="false" Text="Change Category">
</asp:LinkButton>
</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="12"
CssClass="GridStyle"BorderColor="#cbcbcb"BorderStyle="solid"
BorderWidth="1"AutoGenerateColumns="false"DataKeyNames="ProductID"width="100%">
<AlternatingRowStyleCssClass="GridStyle_AltRowStyle"/>
<HeaderStyle CssClass="GridStyle_HeaderStyle"/>
<RowStyle CssClass="GridStyle_RowStyle"/>
<pagerstyle cssclass="GridStyle_pagination" />
<Columns>
<asp:TemplateField>
<ItemStyle HorizontalAlign="Center"width="1%"/>
<HeaderTemplate>
<asp:CheckBox ID="chkAll" runat="server"/>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText = "Number">
<ItemStyle HorizontalAlign="Center" Width="2%"></ItemStyle>
<ItemTemplate>
<asp:Label ID="lblRowNumber"Text='<%# Container.DataItemIndex + 1 %>' runat="server"/>
<asp:Label ID="lblProductID"Text='<%# Eval("ProductID") %>' Visible="false"runat="server"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField ItemStyle-Width="15%"DataField="ProductName"HeaderText="ProductName"/>
<asp:BoundField ItemStyle-Width="15%"DataField="CompanyName"HeaderText="CompanyName"/>
<asp:BoundField ItemStyle-Width="8%"DataField="CategoryName"HeaderText="CategoryName"/>
<asp:BoundField ItemStyle-Width="10%"DataField="QuantityPerUnit"HeaderText="QuantityPerUnit"/>
<asp:BoundField ItemStyle-Width="5%"DataField="UnitPrice"ItemStyle-HorizontalAlign="Right" HeaderText="UnitPrice" />
</Columns>
</asp:GridView>
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Content>
- B10: Viết Code cho file Default.aspx
'Visit http://thuthuatlaptrinh.blogspot.com for more ASP.NET Tutorials
Namespace UpdateMultipleValuesfromCheckBoxtoDatabase
Public Class _Default
Inherits System.Web.UI.Page
#Region "Bind Data"
Private SubBindProduct()
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
End If
updatePanel.Update()
End Sub
Private FunctionBindData() As DataTable
Dim objSQL As New SqlDataProvider
Dim objBind As DataTable = objSQL.FillTable("Pro_Products_List", New ObjectPara("@Keyword", txtSearch.Text.Trim), _
New ObjectPara("@SupplierID", -1), _
New ObjectPara("@CategoryID", -1))
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
BindProduct()
End Sub
#End Region
#Region "Popup"
Private SubMySel_OnSelectedRow(ByVal sender As Object, ByVal e AsUpdateMultipleValuesfromCheckBoxtoDatabase.MyEventArgs)
Dim ItemName As String = ""
With e
If e.Id <> "" Then
BindProduct()
End If
End With
End Sub
#End Region
#Region "Event Handles"
Protected SubPage_Load(ByVal sender AsObject, ByVal e As System.EventArgs) Handles Me.Load
Try
AddHandler CType(ucChangeCategory, UserControls.Popup_ChangeCategory).OnSelectedRow, AddressOf MySel_OnSelectedRow
If Page.IsPostBack = False Then
'Default Submit Button
Page.Form.DefaultButton = cmdQuickSearch.UniqueID
BindProduct()
End If
Catch ex As Exception
End Try
End Sub
Private SubcmdQuickSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdQuickSearch.Click
BindProduct()
End Sub
Private SubcmdChange_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdChange.Click
Dim intCount As Integer = grvObject.Rows.Count
Dim chkSelect As CheckBox
Dim lblLabel As Label
Dim i As Integer
Dim ListProduct As String = ""
For i = 0 To intCount - 1
chkSelect = CType(grvObject.Rows(i).FindControl("chkSelect"), CheckBox)
lblLabel = CType(grvObject.Rows(i).FindControl("lblProductID"), Label)
If NotchkSelect Is NothingAnd NotlblLabel Is NothingThen
Dim ProductID AsString = ""
If NotlblLabel Is NothingThen
ProductID = lblLabel.Text
End If
If ProductID <> -1 AndAlso chkSelect.Checked Then
ListProduct &= ProductID & ","
End If
End If
Next
If ListProduct.Length > 1 Then
If ListProduct.EndsWith(",") ThenListProduct = ListProduct.Remove(ListProduct.Length - 1, 1)
End If
If ListProduct <> ""Then
With CType(ucChangeCategory, UserControls.Popup_ChangeCategory)
.ShowPopup(ListProduct)
End With
End If
End Sub
#End Region
End Class
End Namespace
Bây giờ chạy Project, tích chọn các giá trị cần thay đổi loại -> Kích nút Change Category -> Hộp thoại xuất hiện -> Lựa chọn loại cần thay đổi -> Kích nút Update. Toàn bộ các sản phẩm được chọn sẽ được thay đổi loại đã được chọn.
Chúc các bạn thành công!
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