导出DBF，并且提供下载
#region Declare
string mFilePath = MapPath("../DataTmp/");
string mTableName = "WYKS";
string mStrConn = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + mFilePath + @"/;Extended Properties=""dBASE IV;HDR=Yes;"";";
System.Data.OleDb.OleDbConnection mOLDBConn = new System.Data.OleDb.OleDbConnection(mStrConn);
if (System.IO.File.Exists(mFilePath + "//" + mTableName + ".DBF") == true)
{
System.IO.File.Delete(mFilePath + "//" + mTableName + ".DBF");
}
#endregion Declare
#region 创建DBF表文件
#region CREATE TABLE
string sqlt = "CREATE TABLE " + mTableName + "(" +
"KSH varchar(18)," +
"KSCJ varchar(1)," +
"KYZK varchar(1)," +
"YYYD varchar(1)" +
")";
System.Data.OleDb.OleDbCommand OLDBComm = new System.Data.OleDb.OleDbCommand(sqlt, mOLDBConn);
mOLDBConn.Open();
OLDBComm.ExecuteNonQuery();
OLDBComm.Dispose();
mOLDBConn.Close();
#endregion CREATE TABLE
#region Delete TableDate
System.Data.OleDb.OleDbCommand OLDBCommIn = new System.Data.OleDb.OleDbCommand("delete * from " + mTableName, mOLDBConn);
mOLDBConn.Open();
OLDBCommIn.ExecuteNonQuery();
OLDBCommIn.Dispose();
mOLDBConn.Close();
#endregion Delete TableDate
#endregion 创建DBF表文件
#region 导出数据到DBF
string mWhere = " 1=1";
if (this.txtExamsPoint.Text.Length > 0)
{
mWhere = mWhere + " And ExamsPoint = ‘" + this.txtExamsPoint.Text.Trim() + "‘";
if (this.txtExaminationRoom.Text.Trim().Length > 0)
{
mWhere = mWhere + " And ExaminationRoom In(Select ExaminationRoom From T_ExaminationRoom Where ExaminationRoomName = ‘" + this.txtExaminationRoom.Text.Trim() + "‘ And ExamsPoint = ‘" + this.txtExamsPoint.Text.Trim() + "‘)";
}
}
if (this.txtKSHStart.Text.Trim().Length > 0)
{
mWhere = mWhere + " And KSH >= ‘" + this.txtKSHStart.Text.Trim() + "‘";
}
if (this.txtKSHEnd.Text.Trim().Length > 0)
{
mWhere = mWhere + " And KSH <= ‘" + this.txtKSHEnd.Text.Trim() + "‘";
}
System.Data.DataSet mDSOralAcademic = new System.Data.DataSet();
OralExam.Entity.T_OralAcademic mEOralAcademic = new OralExam.Entity.T_OralAcademic();
mEOralAcademic.WhereCondition = mWhere;
OralExam.Data.T_OralAcademic.pro_T_OralAcademic_SelectDynamic(mEOralAcademic, ref mDSOralAcademic, OralExam.BaseC.GlobeValues.ConnString);
for (int i = 0; i < mDSOralAcademic.Tables[0].Rows.Count; i++)
{
mEOralAcademic = OralExam.DataToEntity.T_OralAcademic.GetEntity(mDSOralAcademic, i);
string mSqlExport = "Insert Into " + mTableName + "(KSH,KSCJ,KYZK,YYYD)";
mSqlExport = mSqlExport + " Select ";
mSqlExport = mSqlExport + "‘" + mEOralAcademic.KSH + "‘ as KSH,";
mSqlExport = mSqlExport + "‘" + mEOralAcademic.AcademicCode + "‘ as KSCJ,";
mSqlExport = mSqlExport + "‘" + mEOralAcademic.OralStatus.ToString() + "‘ as KYZK,";
mSqlExport = mSqlExport + "‘" + mEOralAcademic.ToneStatus.ToString() + "‘ as YYYD";
System.Data.OleDb.OleDbCommand OLDBCommInsert = new System.Data.OleDb.OleDbCommand(mSqlExport, mOLDBConn);
mOLDBConn.Open();
OLDBCommInsert.ExecuteNonQuery();
OLDBCommInsert.Dispose();
mOLDBConn.Close();
}
#endregion 导出数据到DBF
#region 提供下载
System.IO.FileStream fs = new System.IO.FileStream(mFilePath + "//" + mTableName + ".DBF", System.IO.FileMode.Open, System.IO.FileAccess.Read);
byte[] b = new Byte[fs.Length];
fs.Read(b, 0, b.Length);
fs.Flush();
fs.Close();
//System.IO.File.Delete(SavePdfPath);
Response.Clear();
Response.ClearHeaders();
Response.Clear();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream"; //ContentType;
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(mFilePath + "//" + mTableName + ".DBF", System.Text.Encoding.UTF8));
Response.AppendHeader("Content-Length", b.Length.ToString());
fs.Close();
fs.Close();
if (b.Length > 0)
{
Response.OutputStream.Write(b, 0, b.Length);
}
Response.Flush();
Response.End();
#endregion 提供下载
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转自：http://www.cnblogs.com/jyshi/
原文：http://www.cnblogs.com/lonelyxmas/p/3811047.html