XML,Excel导入导出总结

xml 导入

public static System.Data.DataTable GetXmlTable(string fileName)

{

System.Data.DataSet dataSetXml;

System.Data.DataTable dataTableXml;

dataSetXml = new DataSet();

dataTableXml = new System.Data.DataTable();

try

{

dataSetXml.ReadXml(fileName);

dataTableXml = dataSetXml.Tables[1];

}

catch (Exception ex)

{

Console.WriteLine(ex.ToString());

}

return dataTableXml;

}

xml导出

protected void ReadDataSetToXML(DataSet ds, string filePath)

{

FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.Write);

XmlTextWriter xtw = new XmlTextWriter(fs, System.Text.Encoding.UTF8);

ds.WriteXml(xtw, XmlWriteMode.IgnoreSchema);

xtw.Close();

fs.Close();

}

Excel导入

public static System.Data.DataTable GetExcelTable(string fileName, int dataStartLine, int nameLine, int columnCount)

{

System.Data.DataTable dtRet = null;

DataRow dr;

Application app = null;

Workbook wb = null;

Worksheet ws;

Range range;

object objMiss = null;

int iRow;

StringBuilder sbTemp;

string sTemp = string.Empty;

Console.WriteLine(DateTime.Now.ToLongTimeString() + " 正在读取Excel数据");

objMiss = System.Reflection.Missing.Value;

try

{

sbTemp = new StringBuilder();

dtRet = new System.Data.DataTable();

app = new Application();

app.DisplayAlerts = false;

app.Visible = false;

wb = app.Workbooks.Open(fileName, 1, true, objMiss, objMiss, objMiss, objMiss,

objMiss, objMiss, objMiss, objMiss, objMiss, objMiss, objMiss, objMiss);

ws = (Worksheet)wb.Sheets[1];

for (int i = 1; i <= columnCount; i++)

{

range = (Range)ws.get_Range(num2Char(i) + nameLine, objMiss);

if (range.Formula.ToString().Length > 0)

{

dtRet.Columns.Add(range.Formula.ToString().Trim(), typeof(string));

}

else

{

columnCount--;

i--;

}

}

iRow = dataStartLine;

while (true)

{

dr = dtRet.NewRow();

sbTemp.Length = 0;

for (int i = 1; i <= columnCount; i++)

{

range = (Range)ws.get_Range(num2Char(i) + iRow, objMiss);

try

{

sTemp = range.Formula.ToString();

}

catch (System.Runtime.InteropServices.COMException)

{

sTemp = string.Empty;

}

sbTemp.Append(sTemp);

dr[i - 1] = sTemp;

}

if (sbTemp.Length > 0)

{

dtRet.Rows.Add(dr);

iRow++;

}

else

{

break;

}

}

}

catch (Exception ex)

{

throw ex;

}

finally

{

wb.Close(false, objMiss, objMiss);

app.Quit();

app = null;

}

Console.WriteLine(DateTime.Now.ToLongTimeString() + " Excel数据读取完毕");

return dtRet;

}

Excel导出

protected void ExportOfExcel()

{

Response.Clear();

Response.Buffer = true;

Response.Charset = "GB2312";

Response.AppendHeader("Content-Disposition", "attachment;filename=Publisher.xls");

Response.ContentEncoding = System.Text.Encoding.UTF7;

// Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");如果设置为 GetEncoding("GB2312"),导出的文件将会出现乱码。

//设置输出文件类型为excel文件。

Response.ContentType = "application/ms-excel";

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);

this.GridView1.RenderControl(oHtmlTextWriter);

Response.Write(oStringWriter.ToString());

Response.End();

}

Access,FoxPro等导入

private static System.Data.DataTable getOleDbTable(string tableName, string fileName, string connString)

{

OleDbDataAdapter oda;

string sql;

System.Data.DataTable dtRet = new System.Data.DataTable();

sql = "select * from " + tableName;

oda = new OleDbDataAdapter(sql, connString);

oda.Fill(dtRet);

return dtRet;

}