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Reading and writing an Excel file using VB.NET

, 20 Mar 2007 CPOL 238.3K 2.4K 47
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This code helps the user to interact with an Excel file using the OleDBDataProvider in VB.NET.

Screenshot - ExcelSheet.jpg

Introduction

This articles helps user to Insert, Update, Delete, and Select data in Excel files using the OLEDBDataProvider in VB.NET.

Here is the connection string to connect with Excel using OleDBDataProvider:

Private Const connstring As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
        "Data Source=C:\Test.xls;Extended Properties=""Excel 8.0;HDR=YES;"""

Here is the code on the button click event to select and insert data in an Excel file:

Private Sub Button1_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button1.Click
    Dim pram As OleDbParameter
    Dim dr As DataRow
    Dim olecon As OleDbConnection
    Dim olecomm As OleDbCommand
    Dim olecomm1 As OleDbCommand
    Dim oleadpt As OleDbDataAdapter
    Dim ds As DataSet
    Try
        olecon = New OleDbConnection
        olecon.ConnectionString = connstring
        olecomm = New OleDbCommand
        olecomm.CommandText = _
           "Select FirstName, LastName, Age, Phone from [Sheet1$]"
        olecomm.Connection = olecon
        olecomm1 = New OleDbCommand
        olecomm1.CommandText = "Insert into [Sheet1$] " & _
            "(FirstName, LastName, Age, Phone) values " & _
            "(@FName, @LName, @Age, @Phone)"
        olecomm1.Connection = olecon
        pram = olecomm1.Parameters.Add("@FName", OleDbType.VarChar)
        pram.SourceColumn = "FirstName"
        pram = olecomm1.Parameters.Add("@LName", OleDbType.VarChar)
        pram.SourceColumn = "LastName"
        pram = olecomm1.Parameters.Add("@Age", OleDbType.VarChar)
        pram.SourceColumn = "Age"
        pram = olecomm1.Parameters.Add("@Phone", OleDbType.VarChar)
        pram.SourceColumn = "Phone"
        oleadpt = New OleDbDataAdapter(olecomm)
        ds = New DataSet
        olecon.Open()
        oleadpt.Fill(ds, "Sheet1")
        If IsNothing(ds) = False Then
            dr = ds.Tables(0).NewRow
            dr("FirstName") = "Raman"
            dr("LastName") = "Tayal"
            dr("Age") = 24
            dr("Phone") = 98989898
            ds.Tables(0).Rows.Add(dr)
            oleadpt = New OleDbDataAdapter
            oleadpt.InsertCommand = olecomm1
            Dim i As Integer = oleadpt.Update(ds, "Sheet1")
            MessageBox.Show(i & " row affected")
        End If
    Catch ex As Exception
        MessageBox.Show(ex.Message)
    Finally
        olecon.Close()
        olecon = Nothing
        olecomm = Nothing
        oleadpt = Nothing
        ds = Nothing
        dr = Nothing
        pram = Nothing
    End Try
End Sub

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Raman Tayal
Software Developer (Senior)
India India
No Biography provided

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Member 1111752829-Sep-14 1:08
memberMember 1111752829-Sep-14 1:08 
QuestionThanks for detailed Pin
Mike Earl17-Jan-14 4:08
memberMike Earl17-Jan-14 4:08 
Questionwrite data from one source excel file to destination excel file Pin
sanjivkp774-Dec-13 4:51
membersanjivkp774-Dec-13 4:51 
GeneralThanks a Lot brother Pin
ravisankarvattikuti14-Mar-10 5:47
memberravisankarvattikuti14-Mar-10 5:47 
GeneralRe: Thanks a Lot brother Pin
Raman Tayal15-Mar-10 6:54
memberRaman Tayal15-Mar-10 6:54 
Generalthanks Pin
bhavin123014-Sep-09 18:13
memberbhavin123014-Sep-09 18:13 
GeneralPlease clarify my question( urgent!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ) Pin
catchthedream31-Aug-09 1:43
membercatchthedream31-Aug-09 1:43 
QuestionPK??? Pin
GlobalUni22-Jul-09 22:10
memberGlobalUni22-Jul-09 22:10 
AnswerRe: PK??? Pin
Raman Tayal23-Jul-09 7:18
memberRaman Tayal23-Jul-09 7:18 
Questionmaking dictionary Pin
thaileang25-Jun-09 8:31
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QuestionExcel Upload Pin
WendellB4-May-09 8:47
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AnswerRe: Excel Upload Pin
gg42379-Nov-09 23:19
membergg42379-Nov-09 23:19 
GeneralUpdate a shared excell file [modified] Pin
facu20yo19-Apr-09 3:57
memberfacu20yo19-Apr-09 3:57 
Questionneed help...urgent! Pin
Member 430050816-Mar-09 18:11
memberMember 430050816-Mar-09 18:11 
AnswerRe: need help...urgent! Pin
Raman Tayal17-Mar-09 20:28
memberRaman Tayal17-Mar-09 20:28 
GeneralRe: need help...urgent! Pin
Member 430050820-Mar-09 19:13
memberMember 430050820-Mar-09 19:13 
GeneralRe: need help...urgent! Pin
gg423710-Aug-09 13:07
membergg423710-Aug-09 13:07 
Generalhelp Pin
pjacquez6816-Feb-09 7:06
memberpjacquez6816-Feb-09 7:06 
GeneralRe: help Pin
Raman Tayal16-Feb-09 20:50
memberRaman Tayal16-Feb-09 20:50 
Generali need your help bro, Pin
pjacquez6816-Feb-09 6:56
memberpjacquez6816-Feb-09 6:56 
Generaldelete Pin
pjacquez6816-Feb-09 4:15
memberpjacquez6816-Feb-09 4:15 
GeneralFrom Jacquez Pin
pjacquez6816-Feb-09 3:18
memberpjacquez6816-Feb-09 3:18 
GeneralGreat more code being posted THAT DOESN'T WORK OUT OF THE BOX. Pin
Member 389560127-Jan-09 14:00
memberMember 389560127-Jan-09 14:00 
GeneralRe: Great more code being posted THAT DOESN'T WORK OUT OF THE BOX. Pin
Raman Tayal28-Jan-09 5:04
memberRaman Tayal28-Jan-09 5:04 

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