vb.net中从datatable读取数据到Excel

原文地址:http://hi.baidu.com/hiochou/item/5aedd2f0418056cea835a2dc

最近用这个比较多，所以到网上找了些相关的资料，自己做了个简单的示例，记录下来以防以后又忘记了。。。下面是完整代码(用的是Northwind数据库中的Products表)：

Imports System.Data

Imports System.Data.SqlClient

Imports Microsoft.Office

Public Class Form1

Private Sub btnExpert_Click(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles btnExpert.Click

Dim connStr As String = "Data Source=PC-201104071256\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=True"

Dim conn As SqlConnection = New SqlConnection(connStr)

Dim sqlstrAs String = "select top 10 * from dbo.Products"

Dim adapter As SqlDataAdapter = New SqlDataAdapter(sqlstr,conn)

Dim ds As DataSet = New DataSet

Dim myTable As DataTable

adapter.Fill(ds,"productsTable")

myTable = ds.Tables("productsTable")

Dim xlApp As Excel.Application

Dim xlWorkBook As Excel.Workbook

Dim xlWorkSheet As Excel.Worksheet

Dim misValue As Object = System.Reflection.Missing.Value

Dim chartRange As Excel.Range

Dim rcount,ccount As Integer

rcount = myTable.Rows.Count()

ccount = myTable.Columns.Count()

xlApp = New Excel.Application()

xlWorkBook = xlApp.Workbooks.Add(misValue)

xlWorkSheet = xlWorkBook.Worksheets("sheet1")

'表头

xlWorkSheet.Cells(1,1) = "产品ID"

xlWorkSheet.Cells(1,2) = "产品名"

xlWorkSheet.Cells(1,3) = "供应商ID"

xlWorkSheet.Cells(1,4) = "分类ID"

xlWorkSheet.Cells(1,5) = "单元数量"

xlWorkSheet.Cells(1,6) = "单价"

xlWorkSheet.Cells(1,7) = "单位库存"

xlWorkSheet.Cells(1,8) = "订购单位"

xlWorkSheet.Cells(1,9) = "再订购库存量"

xlWorkSheet.Cells(1,10) = "停止使用"

chartRange = xlWorkSheet.UsedRange

For rCnt = 2 To rcount + 1

For cCnt = 1 To ccount

xlWorkSheet.Cells(rCnt,cCnt) = CStr(myTable.Rows(rCnt - 2)(cCnt - 1).ToString)

Next

Next

'格式化单元格

chartRange.HorizontalAlignment = 3

chartRange.VerticalAlignment = 3

chartRange = xlWorkSheet.Range("A1","J1")

chartRange.Font.Bold = True

chartRange = xlWorkSheet.Range("A2","J11")

chartRange.Font.ColorIndex = 5

xlWorkSheet.SaveAs("E:\Test\products.xls")

xlWorkBook.Close()

xlApp.Quit()

releaseObject(xlApp)

releaseObject(xlWorkBook)

releaseObject(xlWorkSheet)

MsgBox("成功保存文件products.xls在E:\Test中...")

End Sub

Private Sub releaseObject(ByVal obj As Object)

Try

System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)

obj = Nothing

Catch ex As Exception

obj = Nothing

Finally

GC.Collect()

End Try

End Sub

End Class