ASP.NET 实现Excel文件的导入与导出

     今天，写了一个关于ASP.NET 实现Excel文件的导入与导出，希望能给同学们带来一定的帮助。

     页面设计代码如下：

     <%@ Page Language="C#" AutoEventWireup="true" EnableEventValidation="false" CodeFile="Default.aspx.cs" Inherits="_Default" %>

要求导入的Excel文件位置：



工作表的名称列表：


要求导出的数据表的名称列表：   
要求导出的Excel文件位置：

     后置代码如下：

     using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Data.OleDb; using System.Data; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { using (SqlConnection sqlConn = new SqlConnection("server=.;database=MyBookShop;integrated security=sspi;")) { using (SqlDataAdapter sqlAda = new SqlDataAdapter("SELECT [name] FROM sys.objects WHERE [type] = 'u'", sqlConn)) { using (DataSet dsDataSet = new DataSet()) { sqlAda.Fill(dsDataSet, "sysobjects"); if (dsDataSet.Tables.Count != 0) { this.ddlOutTables.DataSource = dsDataSet.Tables[0]; this.ddlOutTables.DataTextField = "Name"; this.ddlOutTables.DataBind(); } } } } } } protected void btnGetTableName_Click(object sender, EventArgs e) { this.ddlTables.Items.Clear(); string sFileName = this.fuMainOne.FileName; if (sFileName.Length == 0) { ClientScript.RegisterStartupScript(this.GetType(), "", ""); return; } sFileName = this.hiddenContent1.Value; using (OleDbConnection oledbConn = new OleDbConnection()) { try { oledbConn.ConnectionString = "Provider=Microsoft.Jet.Oledb.4.0;data source=" + sFileName + ";Extended Properties=Excel 8.0;"; oledbConn.Open(); using (DataTable dtOledb = oledbConn.GetSchema("Tables")) { using (DataTableReader dtReader = new DataTableReader(dtOledb)) { while (dtReader.Read()) { this.ddlTables.Items.Add(dtReader["Table_Name"].ToString()); } } } } catch { ClientScript.RegisterStartupScript(this.GetType(), "", ""); return; } } } protected void ddlTables_SelectedIndexChanged(object sender, EventArgs e) { string sFileName = this.hiddenContent1.Value; if (sFileName.Length == 0) { ClientScript.RegisterStartupScript(this.GetType(), "", ""); return; } DataSet dsDataSet = ExcelDataSource(sFileName, this.ddlTables.SelectedItem.Text); if (dsDataSet != null) { this.gvTemp.DataSource = dsDataSet.Tables[0].DefaultView; this.gvTemp.DataBind(); } } public DataSet ExcelDataSource(string sFilePath, string sSheetName) { DataSet dsDataSet = null; string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + sFilePath + ";Extended Properties=Excel 8.0;"; using (OleDbConnection oledbConn = new OleDbConnection(strConn)) { try { using (OleDbDataAdapter oledbAda = new OleDbDataAdapter("select * from [" + sSheetName + "$]", oledbConn)) { dsDataSet = new DataSet(); oledbAda.Fill(dsDataSet); } } catch { ClientScript.RegisterStartupScript(this.GetType(), "", ""); return null; } } return dsDataSet; } protected void ddlOutTables_SelectedIndexChanged(object sender, EventArgs e) { using (SqlConnection sqlConn = new SqlConnection("server=.;database=MyBookShop;integrated security=sspi;")) { using (SqlDataAdapter sqlAda = new SqlDataAdapter("SELECT * FROM " + this.ddlOutTables.SelectedItem.Text, sqlConn)) { using (DataSet dsDataSet = new DataSet()) { sqlAda.Fill(dsDataSet, this.ddlOutTables.SelectedItem.Text); if (dsDataSet.Tables.Count != 0) { this.gvOutTemp.DataSource = dsDataSet.Tables[0]; this.gvOutTemp.DataBind(); } } } } } protected void btnOut_Click(object sender, EventArgs e) { string sFileName = this.hiddenContent2.Value; if (sFileName.Length == 0) { ClientScript.RegisterStartupScript(this.GetType(), "", ""); return; } ExportExcelFromGridView(sFileName, this.gvOutTemp); ClientScript.RegisterStartupScript(this.GetType(), "", ""); } private void ExportExcelFromGridView(string sFilename, GridView gvToExcelGrid) { Response.Clear(); Response.Buffer = true; Response.Charset = "utf-8"; Response.AppendHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(sFilename)); Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文 Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 this.EnableViewState = false; System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true); System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad); System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter); gvToExcelGrid.RenderControl(oHtmlTextWriter); Response.Write(oStringWriter.ToString()); Response.End(); } public override void VerifyRenderingInServerForm(Control control) { } }