vb.net数据导入 vb读取数据库

VB.Net 怎么在把数据导入到做好的EXCEL模板并处理

页面做好一个GridView控件

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导出数据库文件并处理好，导入到GridView

导出到EXCEL文档代码：

Response.Clear()

Response.ClearHeaders()

Response.ClearContent()

Response.Buffer = True

Response.HeaderEncoding = Encoding.GetEncoding("gb2312")

Response.ContentType = "application/octet-stream"

Dim min As String = "_555663.xls"

Response.AddHeader("content-disposition", "attachment; filename=" min)

Response.ContentType = "up/"

'GridView1.Page.EnableViewState = False

Dim sw As StringWriter = New StringWriter

Dim htw As HtmlTextWriter = New HtmlTextWriter(sw)

GridView1.RenderControl(htw)

Response.Write(sw.ToString())

Response.Flush()

Response.End()

如何在VB.NET中实现把SQL数据库里表的数据导入到Excel中？

asp.net 中将gridview数据导入到excel的类 usingSystem; usingSystem.Data; usingSystem.Configuration; usingSystem.IO; usingSystem.Web; usingSystem.Web.Security; usingSystem.Web.UI; usingSystem.Web.UI. WebControls; usingSystem.Web.UI. WebControls.WebParts; usingSystem.Web.UI. HtmlControls; ///summary /// ////summary publicclass GridViewExportUtil { ///summary /// ////summary ///paramname="fileName" /param ///paramname="gv"/ param publicstaticvoidExport( stringfileName,GridViewgv) { HttpContext.Current. Response.Clear(); HttpContext.Current. Response.AddHeader( "content- disposition",string.Format(" attachment;filename={0}", System.Web.HttpUtility. UrlEncode(fileName,System. Text.Encoding.UTF8))); HttpContext.Current. Response.ContentType=" application/ms-excel"; HttpContext.Current. Response.Charset="utf-8"; HttpContext.Current. Response.ContentEncoding= System.Text.Encoding. GetEncoding("utf-8"); using(StringWriter sw=newStringWriter()) { using( HtmlTextWriterhtw=new HtmlTextWriter(sw)) { //Createa formtocontainthegrid Tabletable= newTable(); //addthe headerrowtothetable if(gv. HeaderRow!=null) { GridViewExportUtil. PrepareControlForExport(gv. HeaderRow); table. Rows.Add(gv.HeaderRow); } //addeach ofthedatarowstothetable foreach( GridViewRowrowingv.Rows) { GridViewExportUtil. PrepareControlForExport(row); table. Rows.Add(row); } //addthe footerrowtothetable if(gv. FooterRow!=null) { GridViewExportUtil. PrepareControlForExport(gv. FooterRow); table. Rows.Add(gv.FooterRow); } //render thetableintothehtmlwriter table. RenderControl(htw); //render thehtmlwriterintothe response HttpContext. Current.Response.Write(sw. ToString()); HttpContext. Current.Response.End(); } } } 作者： 后天美丽 2007-8-31 09:24 回复此发言 2 回复： asp.net 中将gridview数据导入到excel 的类 ///summary ///Replaceanyofthe containedcontrolswith literals ////summary ///paramname="control"/ param privatestaticvoid PrepareControlForExport( Controlcontrol) { for(inti=0;icontrol. Controls.Count;i++) { Controlcurrent=control. Controls[i]; if(currentisLinkButton) { control.Controls.Remove( current); control.Controls.AddAt(i, newLiteralControl((current asLinkButton).Text)); } elseif(currentis ImageButton) { control.Controls.Remove( current); control.Controls.AddAt(i, newLiteralControl((current asImageButton).AlternateText) ); } elseif(currentis HyperLink) { control.Controls.Remove( current); control.Controls.AddAt(i, newLiteralControl((current asHyperLink).Text)); } elseif(currentis DropDownList) { control.Controls.Remove( current); control.Controls.AddAt(i, newLiteralControl((current asDropDownList).SelectedItem. Text)); } elseif(currentisCheckBox) { control.Controls.Remove( current); control.Controls.AddAt(i, newLiteralControl((current asCheckBox).Checked?"True" :"False")); } if(current.HasControls()) { GridViewExportUtil. PrepareControlForExport( current); } } } }

VB.NET中怎么导入TXT文本里的数据

比如说用Richtext控件

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim file As String = "f:/x.txt"

RichTextBox1.LoadFile(file)

MsgBox("ok")

End Sub

vb.net怎样把excel内容导入到datagridview

解题思路：

把EXCEL看做数据源来连接。

用一个list来显示EXCEL中的所有表，选择指定表名，打开EXCEL到DG

——————————如下：

引用ADODB 2.8

导入：

Imports System.Data

Imports System.Data.Odbc

Imports System.Data.OleDb

申明

Private Excelpath As String

Public conn As New ADODB.Connection

Public rs As New ADODB.Recordset

创建conn

Public Sub connDB(ByVal filePath As String)

On Error Resume Next

Dim strConnString As String = "Provider=microsoft.ace.oledb.12.0;Data Source=" filePath ";Extended Properties='Excel 12.0; HDR=yes;IMEX=1';"

conn.ConnectionString = strConnString

conn.CursorLocation = ADODB.CursorLocationEnum.adUseClient

conn.Open()

End Sub

Public Function 获取电子表集合(filePath) As List(Of String)

Dim ConnStr As String = "Provider=microsoft.ace.oledb.12.0;Data Source=" filePath ";Extended Properties='Excel 12.0; HDR=no;IMEX=1';"

Dim list As New List(Of String)()

Dim Conn2 As New OleDbConnection(ConnStr)

Try

If Conn2.State = ConnectionState.Closed Then

Conn2.Open()

End If

Dim dt As DataTable = Conn2.GetSchema("Tables")

For Each row As DataRow In dt.Rows

If row(3).ToString() = "TABLE" Then

list.Add(row(2).ToString())

End If

Next

Catch e As Exception

'Throw e

Finally

If Conn2.State = ConnectionState.Open Then

Conn2.Close()

End If

Conn2.Dispose()

End Try

Return list

End Function

//////////////////

开始打开指定EXCEL到DG

Call connDB(Excelpath)

Dim sqlstr As String = "select * from [" Me.ListBox1.Text "]"

With rs

If rs.State 0 Then rs.Close()

.CursorLocation = ADODB.CursorLocationEnum.adUseClient

.Open(sqlstr, conn, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)

If Not rs.EOF And Not rs.BOF Then

Dim da As New System.Data.OleDb.OleDbDataAdapter

Dim ds As New DataSet

da.Fill(ds, rs, "注册表")

DG.DataSource = Nothing

DG.DataSource = ds.Tables(0)

DG.Refresh()

End If

End With

vb.net怎么把excel 读到DataSet中？

可以参考Spire.XLS for .NET关于数据导入导出的方法。

excel数据导入dataset如下代码：

'创建Workbook对象并加载Excel文档

Dim workbook As New Workbook()

workbook.LoadFromFile("F:\ExportData.xlsx", ExcelVersion.Version2013)

'获取第一张sheet

Dim sheet As Worksheet = workbook.Worksheets(0)

'设置range范围

Dim range As CellRange = sheet.Range(sheet.FirstRow, sheet.FirstColumn, sheet.LastRow, sheet.LastColumn)

'输出数据, 同时输出列名以及公式值

Dim dt As DataTable = sheet.ExportDataTable(range, True, True)