Cập nhật đồng loạt nhiều giá trị vào Database trên Gridview

By Unknown - Monday, July 6, 2015 - No Comments

(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.

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- B1: Download CSDL Northwind

- B2: Tạo các stored procedure trong SQL Server

USE [Northwind]

CREATE PROCEDURE [dbo].[Pro_Products_List]

@Keyword nvarchar(250),

@SupplierID int,

@CategoryID int

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

create PROCEDURE [dbo].[Pro_Products_UpdateByCategory]

@ProductID int,

@CategoryID int

UPDATE Products SET

CategoryID = @CategoryID

WHERE

ProductID = @ProductID

Bạn 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 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))

End If

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

Public Function RunSQL(ByVal ProcName As String, ByVal ParamArray Para() As ObjectPara) As Object

Try

Dim _cnn As New SqlConnection(_connectionString)

_cnn.Open()

Dim cmd As New SqlCommand(ProcName, _cnn)

cmd.CommandType = CommandType.StoredProcedure

For Each p As ObjectPara In Para

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

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 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

- 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

<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="Popup_ChangeCategory.ascx.vb" Inherits="UpdateMultipleValuesfromCheckBoxtoDatabase.UserControls.Popup_ChangeCategory" %>

<%@ Register TagPrefix="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:ModalPopupExtender ID="ModalPopupExtender_Popup" runat="server" TargetControlID="cmdShowPopup" X="720" Y="220"

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

<asp:label id="lblHeader" runat="server" Text="Change Category"></asp:label>

</h4>

</div>

<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>

<asp:LinkButton id="cmdUpdate" runat="server" CssClass="btn btn-small" Causesvalidation="true">

</asp:LinkButton>

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

</asp:LinkButton>

</div>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Panel>

- B8: Viết Code cho file Popup_ChangeCategory.ascx

Namespace UpdateMultipleValuesfromCheckBoxtoDatabase.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 Event OnSelectedRow As MyEventHandler

#End Region

#Region "Private Methods"

Private Sub UpdateRecord(ByVal CategoryID As Integer)

Dim objSQL As New SqlDataProvider

If lblListItem.Text <> "" Then

For Each sProduct As String In lblListItem.Text.Split(",")

If sProduct <> "" Then

objSQL.RunSQL("Pro_Products_UpdateByCategory", New ObjectPara("@ProductID", sProduct), _

New ObjectPara("@CategoryID", CategoryID))

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 Sub LoadDropDownList(ByVal ucControl As DropDownList, ByVal DataValueField As String, ByVal DataTextField 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 Sub LoadComboData()

Dim sSQL As String = "Select CategoryID,CategoryName From Categories"

LoadDropDownList(ddlCategory, "CategoryID", "CategoryName", sSQL)

End Sub

#End Region

#Region "Event Handles"

Private Sub cmdUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdUpdate.Click

Dim MyArgs As New MyEventArgs()

Dim CategoryID 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 Sub cmdNo_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdCancel.Click

ModalPopupExtender_Popup.Hide()

End Sub

Private Sub cmdClose_ServerClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdClose.ServerClick

ModalPopupExtender_Popup.Hide()

End Sub

#End Region

End Class

End Namespace

- B9: Mở file Default.aspxdưới dạng HTML và nhập mã HTML

<%@ Page Title="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" %>

<%@ Register TagPrefix="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">

<tr>

<td>

<asp:LinkButton id="cmdChange" runat="server" CssClass="btn btn-small" CausesValidation="false" Text="Change Category">

</asp:LinkButton>

</td>

<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>

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

</td>

</tr>

<tr>

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

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

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

<asp:TemplateField>

<asp:CheckBox ID="chkAll" runat="server" />

</HeaderTemplate>

<asp:CheckBox ID="chkSelect" runat="server" />

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText = "Number">

<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 Sub BindProduct()

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 Sub

Private Function BindData() 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 Sub grvObject_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewPageEventArgs) Handles grvObject.PageIndexChanging

grvObject.PageIndex = e.NewPageIndex

BindProduct()

End Sub

#End Region

#Region "Popup"

Private Sub MySel_OnSelectedRow(ByVal sender As Object, ByVal e As UpdateMultipleValuesfromCheckBoxtoDatabase.MyEventArgs)

Dim ItemName As String = ""

With e

If e.Id <> "" Then

BindProduct()

End If

End With

End Sub

#End Region

#Region "Event Handles"

Protected Sub Page_Load(ByVal sender As Object, 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 Sub cmdQuickSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdQuickSearch.Click

BindProduct()

End Sub

Private Sub cmdChange_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdChange.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 Not chkSelect Is Nothing And Not lblLabel Is Nothing Then

Dim ProductID As String = ""

If Not lblLabel Is Nothing Then

ProductID = lblLabel.Text

End If

If ProductID <> -1 AndAlso chkSelect.Checked Then

ListProduct &= ProductID & ","

End If

If ListProduct.Length > 1 Then

If ListProduct.EndsWith(",") Then ListProduct = 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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