第一种：导出gridVIEW中的数据，用hansTABLE做离线表，将数据库中指定表中的所有数据按GRIDVIEW中绑定的ID导出
只能导出数据不能去操作相应的EXCEl表格，不能对EXCEL中的数据进行格式化操作，如：字体颜色，大小，单元格合并等
/// <summary>
/// 导出
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
{
string IDList = "'0'";
for (int i = 0; i < GVData.Rows.Count; i++)
{
Label LabVis = (Label)GVData.Rows[i].FindControl("LabVisible");
IDList = IDList + ",'" + LabVis.Text.ToString() + "'";
}
Hashtable MyTable = new Hashtable();
MyTable.Add("TrueName", "姓名");
MyTable.Add("DateType", "请假类别及事由");
MyTable.Add("DateFR", "开始时间");
MyTable.Add("DateTo", "结束时间");
MyTable.Add("BuMenName", "组别");
MyTable.Add("Days", "休假天数");
MyTable.Add("SDays", "实修天数");
MyTable.Add("Note", "备注");
string sql = "select TrueName "+"姓名"+",DateType "+"请假类别及事由"+",DateFR "+"开始时间"+",DateTO "+"结束时间"+",Note "+"备注"+",BuMenName "+"所属部门"+",Days "+"休假天数"+",SDays "+"实修天数"+" from T_ProjectLeave,Erpuser,erpbumen where T_ProjectLeave.userid= Erpuser.id and T_projectLeave.bumenID=erpbumen.ID and T_projectLeave.ID in (" + IDList + ") order by userID desc";
ZWL.Common.DataToExcel.GridViewToExcel(ZWL.DBUtility.DbHelperSQL.GetDataSet(sql), MyTable, "Excel报表");
}
GRIDVIEWToExcel方法：
#region 将DataTable的数据导出显示为报表(不使用Excel对象，使用COM.Excel)这里必须要引入Com.EXCEl.dll文件
#region 使用示例
public static void GridViewToExcel(DataSet MyData, Hashtable nameList,string ReportTitle)
{
string FilePath = System.Web.HttpContext.Current.Server.MapPath("../") + "ReportFile\\";
//利用excel对象
DataToExcel dte = new DataToExcel();
string filename = "";
try
{
if (MyData.Tables[0].Rows.Count > 0)
{
filename = dte.DataExcel(MyData.Tables[0], ReportTitle, FilePath, nameList);
}
}
catch
{}
if (filename != "")
{
System.Web.HttpContext.Current.Response.Redirect("../ReportFile/" + filename, true);
}
}
#endregion
/// <summary>
/// 将DataTable的数据导出显示为报表(不使用Excel对象)
/// </summary>
/// <param name="dt">数据DataTable</param>
/// <param name="strTitle">标题</param>
/// <param name="FilePath">生成文件的路径</param>
/// <param name="nameList"></param>
/// <returns></returns>
public string DataExcel(System.Data.DataTable dt, string strTitle, string FilePath, Hashtable nameList)
{
COM.Excel.cExcelFile excel = new COM.Excel.cExcelFile();
ClearFile(FilePath);
string filename = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";
excel.CreateFile(FilePath + filename);
excel.PrintGridLines = false;
COM.Excel.cExcelFile.MarginTypes mt1 = COM.Excel.cExcelFile.MarginTypes.xlsTopMargin;
COM.Excel.cExcelFile.MarginTypes mt2 = COM.Excel.cExcelFile.MarginTypes.xlsLeftMargin;
COM.Excel.cExcelFile.MarginTypes mt3 = COM.Excel.cExcelFile.MarginTypes.xlsRightMargin;
COM.Excel.cExcelFile.MarginTypes mt4 = COM.Excel.cExcelFile.MarginTypes.xlsBottomMargin;
double height = 1.5;
excel.SetMargin(ref mt1, ref height);
excel.SetMargin(ref mt2, ref height);
excel.SetMargin(ref mt3, ref height);
excel.SetMargin(ref mt4, ref height);
COM.Excel.cExcelFile.FontFormatting ff = COM.Excel.cExcelFile.FontFormatting.xlsNoFormat;
string font = "宋体";
short fontsize = 9;
excel.SetFont(ref font, ref fontsize, ref ff);
byte b1 = 1,
b2 = 12;
short s3 = 12;
excel.SetColumnWidth(ref b1, ref b2, ref s3);
string header = "页眉";
string footer = "页脚";
excel.SetHeader(ref header);
excel.SetFooter(ref footer);
COM.Excel.cExcelFile.ValueTypes vt = COM.Excel.cExcelFile.ValueTypes.xlsText;
COM.Excel.cExcelFile.CellFont cf = COM.Excel.cExcelFile.CellFont.xlsFont0;
COM.Excel.cExcelFile.CellAlignment ca = COM.Excel.cExcelFile.CellAlignment.xlsCentreAlign;
COM.Excel.cExcelFile.CellHiddenLocked chl = COM.Excel.cExcelFile.CellHiddenLocked.xlsNormal;
// 报表标题
int cellformat = 1;
// int rowindex = 1,colindex = 3;
// object title = (object)strTitle;
// excel.WriteValue(ref vt, ref cf, ref ca, ref chl,ref rowindex,ref colindex,ref title,ref cellformat);
int rowIndex = 1;//起始行
int colIndex = 0;
//取得列标题
foreach (DataColumn colhead in dt.Columns)
{
colIndex++;
string name = colhead.ColumnName.Trim();
object namestr = (object)name;
IDictionaryEnumerator Enum = nameList.GetEnumerator();
while (Enum.MoveNext())
{
if (Enum.Key.ToString().Trim() == name)
{
namestr = Enum.Value;
}
}
excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref namestr, ref cellformat);
}
//取得表格中的数据
foreach (DataRow row in dt.Rows)
{
rowIndex++;
colIndex = 0;
foreach (DataColumn col in dt.Columns)
{
colIndex++;
if (col.DataType == System.Type.GetType("System.DateTime"))
{
object str;
try
{
str = (object)(Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd");
}
catch
{
str = "";
}
excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref str, ref cellformat);
}
else
{
object str = (object)row[col.ColumnName].ToString();
excel.WriteValue(ref vt, ref cf, ref ca, ref chl, ref rowIndex, ref colIndex, ref str, ref cellformat);
}
}
}
int ret = excel.CloseFile();
// if(ret!=0)
// {
// //MessageBox.Show(this,"Error!");
// }
// else
// {
// //MessageBox.Show(this,"请打开文件c:\\test.xls!");
// }
return filename;
}
#endregion
#region 清理过时的Excel文件
private void ClearFile(string FilePath)
{
String[] Files = System.IO.Directory.GetFiles(FilePath);
if (Files.Length > 10)
{
for (int i = 0; i < 10; i++)
{
try
{
System.IO.File.Delete(Files[i]);
}
catch
{
}
}
}
}
#endregion