Thêm, sửa, xóa dữ liệu trong GridView trong Asp.net

By Unknown - Friday, June 19, 2015 - No Comments

(Add edit delete update records in Gridview) – Đối với những bảng dữ liệu có ít cột, người lập trình có thể xây dựng chức năng: Thêm, sửa dữ liệu ngay tại Gridview. Với cách xây dựng này sẽ giúp người sử dụng dễ dàng và nhanh chóng thao tác với dữ liệu khi cần. Bài viết dưới đây sẽ hướng dẫn các bạn thực hiện công việc này.

Xem những Video hay dành cho thiếu nhi - Xem trên Youtube

- 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

CREATE PROCEDURE [dbo].[Pro_Accounts_Add]

@AccountCode nvarchar(25)

,@AccName nvarchar(250)

,@AccAddress nvarchar(250)

,@AccPhone nvarchar(80)

,@AccFAX nvarchar(50)

,@AccEmail nvarchar(500)

,@AccWebsite nvarchar(150)

,@AccDesc nvarchar(2000)

INSERT INTO Accounts (

[AccountCode]

,[AccName]

,[AccAddress]

,[AccPhone]

,[AccFAX]

,[AccEmail]

,[AccWebsite]

,[AccDesc]

,[CreatedDate]

,[ModifiedDate]

) VALUES (

@AccountCode

,@AccName

,@AccAddress

,@AccPhone

,@AccFAX

,@AccEmail

,@AccWebsite

,@AccDesc

,getdate()

)

select SCOPE_IDENTITY()

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

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

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 InsertUpdateDeleteRecords

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 sql As String) As DataTable

Try

Dim tb As New DataTable

Dim adap As New SqlDataAdapter(sql, _connectionString)

adap.Fill(tb)

Return tb

Catch ex As Exception

Return Nothing

End Try

End Function

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 Integer

Dim iExecute As Integer = 0

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))

'cmd.ExecuteScalar()

iExecute = cmd.ExecuteNonQuery()

Catch ex As Exception

End Try

Return iExecute

End Function

Public Function GetRow(ByVal ProcName As String, ByVal ParamArray Para() As ObjectPara) As DataRow

Try

Dim tb As New DataTable

Dim adap As New SqlDataAdapter(ProcName, _connectionString)

adap.SelectCommand.CommandType = CommandType.StoredProcedure

For Each p As ObjectPara In 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 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: 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: Download các file ảnh tại đây và Copy các file này vào thư mục Images của Project.

- B9: Mở file Site.css nhập thêm đoạn Code phía dưới

.NormalRed

{

font-family: Tahoma, Arial, Helvetica;

font-size: 12px;

font-weight: bold;

color: #ff0000;

}

- B10: Mở file Default.aspxdưới dạng HTML và bổ xung Control

<%@ Page Title="How to add edit delete update records in Gridview ASP.NET" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false" EnableEventValidation= "false" CodeBehind="Default.aspx.vb" Inherits="InsertUpdateDeleteRecords._Default" %>

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

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

</asp:ScriptManager>

<h3>

How to add edit delete update records in Gridview ASP.NET

</h3>

<br />

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

<tr>

<td>

</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"></asp:Label>

</td>

</tr>

<tr>

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

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

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

<asp:TemplateField HeaderText="AccountCode">

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

</ItemTemplate>

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

<asp:TextBox ID="txtAccountCode" Width="80" runat="server" Text='<%#Eval("AccountCode") %>'></asp:TextBox>

</EditItemTemplate>

<asp:TextBox ID="txtAccountCode_Add" Width="80" runat="server"></asp:TextBox>

<asp:RequiredFieldValidator ID="valAccountCode" runat="server" CssClass="NormalRed" ValidationGroup="Add" ControlToValidate="txtAccountCode_Add" ErrorMessage="Enter Code" Display="dynamic"></asp:RequiredFieldValidator>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="AccountName">

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

</ItemTemplate>

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

</EditItemTemplate>

<asp:TextBox ID="txtAccountName_Add" runat="server"></asp:TextBox>

<asp:RequiredFieldValidator ID="valAccountName" runat="server" CssClass="NormalRed" ValidationGroup="Add" ControlToValidate="txtAccountName_Add" ErrorMessage="Enter Name" Display="dynamic"></asp:RequiredFieldValidator>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Phone">

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

</ItemTemplate>

<asp:TextBox ID="txtPhone" Width="100" runat="server" Text='<%#Eval("AccPhone") %>'></asp:TextBox>

</EditItemTemplate>

<asp:TextBox ID="txtPhone_Add" Width="100" runat="server"></asp:TextBox>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Fax">

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

</ItemTemplate>

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

</EditItemTemplate>

<asp:TextBox ID="txtFAX_Add" Width="100" runat="server"></asp:TextBox>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Email">

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

</ItemTemplate>

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

</EditItemTemplate>

<asp:TextBox ID="txtEmail_Add" runat="server"></asp:TextBox>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="Website">

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

</ItemTemplate>

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

</EditItemTemplate>

<asp:TextBox ID="txtWebsite_Add" runat="server"></asp:TextBox>

</FooterTemplate>

</asp:TemplateField>

<asp:TemplateField>

<asp:ImageButton ID="cmdEdit" CommandName="Edit" CommandArgument='<%# Eval("AccountID")%>' runat="server" ImageUrl="~/images/edit.gif" CausesValidation="False"></asp:ImageButton>

<asp:ImageButton ID="cmdDelete" CommandName="Delete" CommandArgument='<%# Eval("AccountID")%>' runat="server" ImageUrl="~/images/delete.gif" CausesValidation="False"></asp:ImageButton>

</ItemTemplate>

<asp:ImageButton ID="cmdUpdate" runat="server" CommandName="Update" ToolTip="Update" ImageUrl="~/Images/save.gif" />

<asp:ImageButton ID="cmdCancel" runat="server" CommandName="Cancel" ToolTip="Cancel" ImageUrl="~/Images/cancel.gif" />

</EditItemTemplate>

<asp:LinkButton ID="cmdAdd" runat="server" ValidationGroup="Add" CommandName="Add" Text="Add" ImageUrl="~/Images/add.gif" Width="100px"></asp:LinkButton>

</FooterTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Content>

- B11: Viết Code cho file Default.aspx

Imports System.Data

Namespace InsertUpdateDeleteRecords

Public Class _Default

Inherits System.Web.UI.Page

#Region "Private Methods"

Private Sub DeleteAccount(ByVal ItemID As Integer)

Dim objSQL As New SqlDataProvider

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

BindAccount()

End Sub

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

ByVal AccWebsite As String, ByVal AccEmail As String, ByVal Command As String) As Integer

Dim objSQL As New SqlDataProvider

Dim iError As Integer = -1

If Command = "Edit" Then

iError = 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", ""))

Else

iError = objSQL.RunSQL("Pro_Accounts_Add", 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", ""))

End If

Return iError

End Function

#End Region

#Region "Bind Data"

Private Sub BindAccount()

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

lblMessage.Text = "No Data"

End If

updatePanel.Update()

End If

End Sub

Public Shared Function BindData(ByVal Keyword 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 Sub grvObject_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles grvObject.RowCommand

If e.CommandName = "Add" Then

With grvObject

Dim IsAdded As Boolean = False

Dim AccountName As String = ""

Dim txtAccountCode As TextBox = DirectCast(.FooterRow.FindControl("txtAccountCode_Add"), TextBox)

Dim txtAccName As TextBox = DirectCast(.FooterRow.FindControl("txtAccountName_Add"), TextBox)

Dim txtAccPhone As TextBox = DirectCast(.FooterRow.FindControl("txtPhone_Add"), TextBox)

Dim txtFax As TextBox = DirectCast(.FooterRow.FindControl("txtFAX_Add"), TextBox)

Dim txtWebsite As TextBox = DirectCast(.FooterRow.FindControl("txtWebsite_Add"), TextBox)

Dim txtEmail As TextBox = DirectCast(.FooterRow.FindControl("txtEmail_Add"), TextBox)

If Not txtAccName Is Nothing And txtAccName.Text <> "" Then

AccountName = txtAccName.Text

End If

If Not txtAccountCode Is Nothing And Not txtAccName Is Nothing And Not txtAccPhone Is Nothing _

And Not txtFax Is Nothing And Not txtWebsite Is Nothing And Not txtEmail Is Nothing Then

IsAdded = EditAccount(-1, txtAccountCode.Text, txtAccName.Text, txtAccPhone.Text, txtFax.Text, txtWebsite.Text, txtEmail.Text, "Add") > 0

End If

If IsAdded Then

lblMessage.Text = AccountName & " has been added successfully!"

lblMessage.ForeColor = System.Drawing.Color.Green

BindAccount()

Else

lblMessage.Text = "Error while adding: " & AccountName

lblMessage.ForeColor = System.Drawing.Color.Red

End If

trMessage.Visible = True

End With

End If

End Sub

Private Sub grvObject_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles grvObject.RowUpdating

With grvObject

Dim ItemID As Integer = -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 As TextBox = DirectCast(.Rows(e.RowIndex).FindControl("txtAccountName"), TextBox)

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

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

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

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

If Not lblAccountID Is Nothing And lblAccountID.Text <> "" Then

ItemID = lblAccountID.Text

End If

If Not txtAccountCode Is Nothing And Not txtAccName Is Nothing And Not txtAccPhone Is Nothing _

And Not txtFax Is Nothing And Not txtWebsite Is Nothing And Not txtEmail Is Nothing Then

EditAccount(ItemID, txtAccountCode.Text, txtAccName.Text, txtAccPhone.Text, txtFax.Text, txtWebsite.Text, txtEmail.Text, "Edit")

grvObject.EditIndex = -1

BindAccount()

End If

End With

End Sub

Private Sub grvObject_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles grvObject.RowDataBound

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

Dim cmdDelete As ImageButton = CType(e.Row.FindControl("cmdDelete"), ImageButton)

If cmdDelete IsNot Nothing Then

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

cmdDelete.ToolTip = "Delete Account"

End If

End Sub

Private Sub grvObject_RowDeleting(ByVal sender As Object, ByVal e As System.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 Sub grvObject_RowCancelingEdit(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCancelEditEventArgs) Handles grvObject.RowCancelingEdit

grvObject.EditIndex = -1

BindAccount()

End Sub

Private Sub grvObject_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles grvObject.RowEditing

grvObject.EditIndex = e.NewEditIndex

BindAccount()

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

'Default Submit Button

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

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

Chúc các bạn thành công!

Quang Bình

News Ticker