我们的ASP页面将在远程服务器上，来读取我们的桌面Excel文件。首先，我们必须把它上传到远程服务器，然后retrive数据。因此，我们首先设计一个表格，上传到服务器。我们必须从文件retrive数据，再一次，所以我们将重新命名Excel，然后上传。 | <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
Read and Display Data From an Excel File (.xsl or .xlsx) in ASP.NET
| 连接使用Microsoft OLE DB提供的Excel jet 在Microsoft OLE DB提供用于Jet(联合发动机技术站是一个数据库引擎)提供的OLE DB接口，Microsoft Access数据库，并允许SQL Server 2005和更高分布式查询来查询Access数据库和Excel电子表格。我们将连接到Microsoft Excel工作簿使用Jet 4.0的Microsoft OLE DB提供， 读取数据，然后显示在GridView中的数据。 xlsx(Excel 2007年)载有提供者Microsoft.ACE.OLEDB.12.0。这是新的Access数据库引擎的OLE DB驱动程序，也是阅读Excel 2003的能力。我们将用它来阅读xlsx(Excel 2007年)的数据。 我们有一个Excel文件，其内容如下所示。注意：此表名称必须相同，意味着，如果想读的Sheet1的数据。你必须小心，同时书面方式的SQL查询，因为选择*从[Sheet1的$]和SELECT *从[Sheet1的$]是两个不同的查询。 | Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpload.Click
If (txtFilePath.HasFile) Then
Dim conn As OleDbConnection
Dim cmd As OleDbCommand
Dim da As OleDbDataAdapter
Dim ds As DataSet
Dim query As String
Dim connString As String = ""
Dim strFileName As String = DateTime.Now.ToString("ddMMyyyy_HHmmss")
Dim strFileType As String = System.IO.Path.GetExtension(txtFilePath.FileName).ToString().ToLower()
‘Check file type
If strFileType.Trim = ".xls" Or strFileType.Trim = ".xlsx" Then
txtFilePath.SaveAs(Server.MapPath("~/UploadedExcel/" & strFileName & strFileType))
Else
lblMessage.Text = "Only excel files allowed"
lblMessage.ForeColor = Drawing.Color.Red
lblMessage.Visible = True
Exit Sub
End If
Dim strNewPath As String = Server.MapPath("~/UploadedExcel/" & strFileName & strFileType)
‘Connection String to Excel Workbook
If strFileType.Trim = ".xls" Then
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strNewPath & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=2"""
ElseIf strFileType.Trim = ".xlsx" Then
connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & strNewPath & ";Extended Properties=""Excel 12.0;HDR=Yes;IMEX=2"""
End If
query = "SELECT * FROM [Sheet1$]"
‘Create the connection object
conn = New OleDbConnection(connString)
‘Open connection
If conn.State = ConnectionState.Closed Then conn.Open()
‘Create the command object
cmd = New OleDbCommand(query, conn)
da = New OleDbDataAdapter(cmd)
ds = New DataSet()
da.Fill(ds)
grvExcelData.DataSource = ds.Tables(0)
grvExcelData.DataBind()
da.Dispose()
conn.Close()
conn.Dispose()
Else
lblMessage.Text = "Please select an excel file first"
lblMessage.ForeColor = Drawing.Color.Red
lblMessage.Visible = True
End If
End Sub
| C#.NET Code | protected void btnUpload_Click(object sender, EventArgs e)
{
if ((txtFilePath.HasFile))
{
OleDbConnection conn = new OleDbConnection();
OleDbCommand cmd = new OleDbCommand();
OleDbDataAdapter da = new OleDbDataAdapter();
DataSet ds = new DataSet();
string query = null;
string connString = "";
string strFileName = DateTime.Now.ToString("ddMMyyyy_HHmmss");
string strFileType = System.IO.Path.GetExtension(txtFilePath.FileName).ToString().ToLower();
//Check file type
if (strFileType == ".xls" || strFileType == ".xlsx")
{
txtFilePath.SaveAs(Server.MapPath("~/UploadedExcel/" + strFileName + strFileType));
}
else
{
lblMessage.Text = "Only excel files allowed";
lblMessage.ForeColor = System.Drawing.Color.Red;
lblMessage.Visible = true;
return;
}
string strNewPath = Server.MapPath("~/UploadedExcel/" + strFileName + strFileType);
//Connection String to Excel Workbook
if (strFileType.Trim() == ".xls")
{
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strNewPath + ";Extended Properties="Excel 8.0;HDR=Yes;IMEX=2"";
}
else if (strFileType.Trim() == ".xlsx")
{
connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + strNewPath + ";Extended Properties="Excel 12.0;HDR=Yes;IMEX=2"";
}
query = "SELECT * FROM [Sheet1$]";
//query = "SELECT [Country],[Capital] FROM [Sheet1$] WHERE [Currency]='Rupee'"
//query = "SELECT [Country],[Capital] FROM [Sheet1$]"
//Create the connection object
conn = new OleDbConnection(connString);
//Open connection
if (conn.State == ConnectionState.Closed) conn.Open();
//Create the command object
cmd = new OleDbCommand(query, conn);
da = new OleDbDataAdapter(cmd);
ds = new DataSet();
da.Fill(ds);
grvExcelData.DataSource = ds.Tables[0];
grvExcelData.DataBind();
lblMessage.Text = "Data retrieved successfully! Total Records:" + ds.Tables[0].Rows.Count;
lblMessage.ForeColor = System.Drawing.Color.Green;
lblMessage.Visible = true;
da.Dispose();
conn.Close();
conn.Dispose();
}
else
{
lblMessage.Text = "Please select an excel file first";
lblMessage.ForeColor = System.Drawing.Color.Red;
lblMessage.Visible = true;
}
} |
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