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Export to Excel using VB.Net

, 25 Apr 2008 CPOL 580.5K 27.8K 164
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Export data from VB.Net Dataset to Excel without using Datagrid/DataTable

 

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Introduction

Export the data's to Excel of Microsoft office is currently need in many concern. But many of them used very complicated coding for simple export either from Datagrid or DataTable. I used simple Dataset to export the data.

Background

Introducing the way of sending data's from datagrid or by Datatable. I used Dataset which is easy to use. But for code optimization dataset is not advisable compare to Reader and DataTable

Using the code

In current available code for export the data to Excel are given. Which are so completed and not in straight forward. Because they used the Datagrid and DataTable. Which are given below.

From DataTable to Excel sheet,

Dim dt1 As New DataTable
Dim I1, J1 As Integer
For I1 = 0 To dsmas1.Tables(0).Columns.Count - 1
      dt1.Columns.Add(dsmas1.Tables(0).Columns(I1).ColumnName)
 Next
 For I1 = 0 To dsmas1.Tables(0).Rows.Count - 1
      Dim DR As DataRow = Nothing
      DR = dt1.NewRow
      For J1 = 0 To dsmas1.Tables(0).Columns.Count - 1
          DR.Item(J1) = dsmas1.Tables(0).Rows(I1).ItemArray(J1)
      Next
      dt1.Rows.Add(DR)
 Next
 rel_ds.Tables.Add(dt1)
 Dim dt As New DataTable
 Dim I, J As Integer
 For I = 0 To dschd1.Tables(0).Columns.Count - 1
      dt.Columns.Add(dschd1.Tables(0).Columns(I).ColumnName)
 Next
 For I = 0 To dschd1.Tables(0).Rows.Count - 1
      Dim DR As DataRow = Nothing
      DR = dt.NewRow
      For J = 0 To dschd1.Tables(0).Columns.Count - 1
          DR.Item(J) = dschd1.Tables(0).Rows(I).ItemArray(J)
      Next
      dt.Rows.Add(DR)
 Next
  rel_ds.Tables.Add(dt)

For DataGrid to Excel sheet

'verfying the datagridview having data or not
If ((DataGridView1.Columns.Count = 0) Or (DataGridView1.Rows.Count = 0)) Then
    Exit Sub
End If

'Creating dataset to export
Dim dset As New DataSet
'add table to dataset
dset.Tables.Add()
'add column to that table
For i As Integer = 0 To DataGridView1.ColumnCount - 1
    dset.Tables(0).Columns.Add(DataGridView1.Columns(i).HeaderText)
Next
'add rows to the table
Dim dr1 As DataRow
For i As Integer = 0 To DataGridView1.RowCount - 1
    dr1 = dset.Tables(0).NewRow
    For j As Integer = 0 To DataGridView1.Columns.Count - 1
        dr1(j) = DataGridView1.Rows(i).Cells(j).Value
    Next
    dset.Tables(0).Rows.Add(dr1)
Next

Dim excel As New Microsoft.Office.Interop.Excel.ApplicationClass
Dim wBook As Microsoft.Office.Interop.Excel.Workbook
Dim wSheet As Microsoft.Office.Interop.Excel.Worksheet

wBook = excel.Workbooks.Add()
wSheet = wBook.ActiveSheet()

Dim dt As System.Data.DataTable = dset.Tables(0)
Dim dc As System.Data.DataColumn
Dim dr As System.Data.DataRow
Dim colIndex As Integer = 0
Dim rowIndex As Integer = 0

For Each dc In dt.Columns
    colIndex = colIndex + 1
    excel.Cells(1, colIndex) = dc.ColumnName
Next

For Each dr In dt.Rows
    rowIndex = rowIndex + 1
    colIndex = 0
    For Each dc In dt.Columns
        colIndex = colIndex + 1
        excel.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)

    Next
Next

wSheet.Columns.AutoFit()
Dim strFileName As String = "D:\ss.xls"
Dim blnFileOpen As Boolean = False
Try
    Dim fileTemp As System.IO.FileStream = System.IO.File.OpenWrite(strFileName)
    fileTemp.Close()
Catch ex As Exception
    blnFileOpen = False
End Try

If System.IO.File.Exists(strFileName) Then
    System.IO.File.Delete(strFileName)
End If

wBook.SaveAs(strFileName)
excel.Workbooks.Open(strFileName)
excel.Visible = True

But i used only Dataset to Excel sheet

In code, I used a user defined function called "Load_Excel_Details()" which i used old technique like create Object for Excel, add the Book for a sheet and sheet for the data.

i.e,.

  • Excel <-- System.Runtime.InteropServices.Marshal.ReleaseComObject(Excel)
    • Book <------ Excel Workbooks.Add()
      • Sheet <----- Excel SheetsInNewWorkbook = 1
        • Data <----- Excel cells(1, i).value

Which is used in the code like given below:

 With Excel
       .SheetsInNewWorkbook = 1
       .Workbooks.Add()
       .Worksheets(1).Select()

      Dim i As Integer = 1
      For col = 0 To ComDset.Tables(0).Columns.Count - 1
           .cells(1, i).value = ComDset.Tables(0).Columns(col).ColumnName
           .cells(1, i).EntireRow.Font.Bold = True
           i += 1
      Next

            i = 2

       Dim k As Integer = 1
       For col = 0 To ComDset.Tables(0).Columns.Count - 1
          i = 2
          For row = 0 To ComDset.Tables(0).Rows.Count - 1
              .Cells(i, k).Value = ComDset.Tables(0).Rows(row).ItemArray(col)
               i += 1
          Next
               k += 1
       Next
          filename = "c:\File_Exported.xls"
         .ActiveCell.Worksheet.SaveAs(filename)
 End With

 

Points of Interest

I used simple For loops.... and insert the values by Rows, Columns and Cells formats.

History

I proposed this after i used in my company project which appreciate by the customers.

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

Senthil Sambandam
Technical Lead
India India
No Biography provided

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Comments and Discussions

 
GeneralMy vote of 5 Pin
Gun Gun Febrianza18-Dec-14 18:41
member Gun Gun Febrianza18-Dec-14 18:41 
QuestionExcel Pin
Member 1081187811-May-14 23:07
memberMember 1081187811-May-14 23:07 
QuestionThanks Pin
Kashif Alvi24-Aug-13 8:44
memberKashif Alvi24-Aug-13 8:44 
QuestionThanks Pin
nihadar12-Jun-13 22:57
membernihadar12-Jun-13 22:57 
QuestionExport multiple DataSets to multiple Excel sheets using vb.net Pin
Priyanka Jain3-May-13 23:40
memberPriyanka Jain3-May-13 23:40 
Questionhi Pin
Member 999349622-Apr-13 15:34
memberMember 999349622-Apr-13 15:34 
GeneralFree Export to Excel class, using OpenXML libraries Pin
Mike Gledhill1-Mar-13 7:54
memberMike Gledhill1-Mar-13 7:54 
GeneralRe: Free Export to Excel class, using OpenXML libraries Pin
Member 795657814-Mar-13 17:55
memberMember 795657814-Mar-13 17:55 
Generalgood Pin
pootuba31-Jan-13 4:00
memberpootuba31-Jan-13 4:00 
QuestionError "Microsoft.Office.Interop.Excel" Pin
morteza_msh15-Jan-13 10:15
membermorteza_msh15-Jan-13 10:15 
i'm using vb.net 2010, when i compiled your project, error message shown below
Error message --> Type 'Microsoft.Office.Interop.Excel.Workbook' and 'Microsoft.Office.Interop.Excel.ApplicationClass' and 'Microsoft.Office.Interop.Excel.Worksheet is not defined.
how to solve this error?
thanks
AnswerRe: Error "Microsoft.Office.Interop.Excel" Pin
Defilippo9-Dec-13 23:06
memberDefilippo9-Dec-13 23:06 
QuestionExcel Chart in vb.net Pin
Ofir G.20-Dec-12 2:03
memberOfir G.20-Dec-12 2:03 
GeneralThank you Your Coding Pin
vanchai hontong6-Dec-12 17:56
membervanchai hontong6-Dec-12 17:56 
QuestionThank you, very good example Pin
Member 868754429-Oct-12 21:26
memberMember 868754429-Oct-12 21:26 
GeneralMy vote of 5 Pin
D-Kishore4-Sep-12 19:25
memberD-Kishore4-Sep-12 19:25 
GeneralMy vote of 5 Pin
ALDER_MORIGGI13-Jul-12 2:38
memberALDER_MORIGGI13-Jul-12 2:38 
GeneralMy vote of 5 Pin
Himachandra5-Jul-12 23:06
memberHimachandra5-Jul-12 23:06 
QuestionExporting DataGridView contents in an excel file following designed column format in an excel template 97-2003 Pin
Member 898364524-May-12 22:32
memberMember 898364524-May-12 22:32 
AnswerRe: Exporting DataGridView contents in an excel file following designed column format in an excel template 97-2003 Pin
Kurfuerstendamm19-Nov-13 0:25
memberKurfuerstendamm19-Nov-13 0:25 
GeneralMy vote of 5 Pin
MacParekh21-May-12 21:20
memberMacParekh21-May-12 21:20 
GeneralMy vote of 5 Pin
Member 432084410-Feb-12 4:52
memberMember 432084410-Feb-12 4:52 
QuestionSeriously? Pin
ortund5-Jan-12 20:57
memberortund5-Jan-12 20:57 
AnswerRe: Seriously? Pin
Senthil Sambandam14-Nov-14 5:06
professionalSenthil Sambandam14-Nov-14 5:06 
SuggestionAlternative way to export to a (genuine) Excel 2007 file, using OpenXML Pin
MikeGledhill5-Dec-11 0:58
memberMikeGledhill5-Dec-11 0:58 
GeneralMy vote of 5 Pin
Member 815120624-Nov-11 2:55
memberMember 815120624-Nov-11 2:55 

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