本文实例讲述了asp.net实现数据从DataTable导入到Excel文件并创建表的方法。分享给大家供大家参考，具体如下：
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/// <summary>
/// 把数据从DataTable导入到Excel文件里
/// </summary>
/// <param name="dataTable">数据源</param>
/// <param name="AbsoluteExcelFilePath">Excel文件的绝对路径</param>
/// <param name="TblColName">TBL里对应的列名</param>
/// <param name="ColumnName">Excel中对应的列名</param>
/// <returns>操作成功返回True,失败返回False</returns>
public static bool ExportDataToExcel(DataTable dataTable, string AbsoluteExcelFilePath, string[] TblColName, string[] ColumnName)
{
int k = 0;
if (dataTable == null) return false;
OleDbConnection Conn = new OleDbConnection();
try
{
string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + AbsoluteExcelFilePath + ";Mode=Share Deny None;Extended Properties=Excel 8.0;Jet OLEDB:Create System Database=True";
Conn = new OleDbConnection(strConn);
Conn.Open();
OleDbCommand command = Conn.CreateCommand();
string strSQL = "";
if (dataTable.Columns != null)
{
//建表
strSQL = "CREATE TABLE " + dataTable.TableName + "(";
for (int i = 0; i < ColumnName.Length; i++)
{
strSQL += ColumnName[i] + " TEXT,";
}
strSQL = strSQL.Substring(0, strSQL.Length - 1);
strSQL += ")";
command.CommandText += strSQL;
command.ExecuteNonQuery();
if (dataTable.Rows.Count > 0)
{
//导入数据
foreach (DataRow row in dataTable.Rows)
{
strSQL = "insert into " + dataTable.TableName + "(";
for (k = 0; k < TblColName.Length; k++)
{
strSQL += ColumnName[k] + ",";
}
strSQL = strSQL.Substring(0, strSQL.Length - 1);
strSQL += ") values( ";
for (k = 0; k < TblColName.Length; k++)
{
strSQL += "'" + row[TblColName[k]] + "',";
}
strSQL = strSQL.Substring(0, strSQL.Length - 1);
strSQL += ")";
command.CommandText = strSQL;
command.ExecuteNonQuery();
}
}
}
}
catch (Exception ex)
{
Conn.Close();
throw new Exception(ex.Message);
return false;
}
Conn.Close();
return true;
}
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调用方法:
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DataSet ds = (DataSet)Session["listMobile"];//获得要导出的表格的值
if (ds.Tables[0].Rows.Count <= 0)
{
Page.RegisterStartupScript("", "<mce:script type="text/javascript"><!--
alert('没有内容不能导出！')
// --></mce:script>");
}
else
{
//EXCEL页面的名称
string[] tableName = { "["+DateTime.Now.ToString("yyyyMMddhhmmss")+"]" };
string fileName = tools.CreateID() + ".xls";
string filePath = Server.MapPath("..//DownloadFiles//" + fileName);
if (tools.ExportDataToExcel(ds, filePath, tableName)==true)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
Response.ContentType = "application/vnd.ms-excel";
this.EnableViewState = false;
Response.WriteFile(filePath);
Response.Flush();
if (System.IO.File.Exists(filePath)) System.IO.File.Delete(filePath);
Response.Redirect(this.Request.UrlReferrer.AbsoluteUri, true);
Response.End();
}
}
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希望本文所述对大家asp.net程序设计有所帮助。
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