作者：乔山办公网日期：
返回目录：excel表格制作
下面的函数作用，将DataTable导出到EXCEL文件：
private void DataTabletoExcel(System.Data.DataTable tmpDataTable,string strFileName)
{
if (tmpDataTable == null)
{
return;
}
int rowNum = tmpDataTable.Rows.Count;
int columnNum = tmpDataTable.Columns.Count;
int rowIndex = 1;
int columnIndex = 0;
Excel.Application xlApp = new Excel.ApplicationClass();
xlApp.DefaultFilePath = "";
xlApp.DisplayAlerts = true;
xlApp.SheetsInNewWorkbook = 1;
Excel.Workbook xlBook = xlApp.Workbooks.Add(true);
//将DataTable的列名导入e799bee5baa6e79fa5e98193e58685e5aeb9365Excel表第一行
foreach(DataColumn dc in tmpDataTable.Columns)
{
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = dc.ColumnName;
}
//将DataTable中的数据导入Excel中
for(int i = 0;i<rowNum; i++)
{
rowIndex ++;
columnIndex = 0;
for (int j = 0;j<columnNum; j++)
{
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = tmpDataTable.Rows[i][j].ToString();
}
}
xlBook.SaveCopyAs(strFileName + ".xls");
}
下面e799bee5baa6e997aee7ad94e59b9ee7ad94331的函数作用，将DataTable导出到EXCEL文件：
private void DataTabletoExcel(System.Data.DataTable tmpDataTable,string strFileName)
{
if (tmpDataTable == null)
{
return;
}
int rowNum = tmpDataTable.Rows.Count;
int columnNum = tmpDataTable.Columns.Count;
int rowIndex = 1;
int columnIndex = 0;
Excel.Application xlApp = new Excel.ApplicationClass();
xlApp.DefaultFilePath = "";
xlApp.DisplayAlerts = true;
xlApp.SheetsInNewWorkbook = 1;
Excel.Workbook xlBook = xlApp.Workbooks.Add(true);
//将DataTable的列名导入Excel表第一行
foreach(DataColumn dc in tmpDataTable.Columns)
{
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = dc.ColumnName;
}
//将DataTable中的数据导入Excel中
for(int i = 0;i<rowNum; i++)
{
rowIndex ++;
columnIndex = 0;
for (int j = 0;j<columnNum; j++)
{
columnIndex ++;
xlApp.Cells[rowIndex,columnIndex] = tmpDataTable.Rows[i][j].ToString();
}
}
xlBook.SaveCopyAs(strFileName + ".xls");
}
我们一般用的方法是将表遍历一遍，然e799bee5baa6e79fa5e98193e78988e69d83364后写入到excel中，主要代码如下： /// <summary>
/// 指定文件名称、表名、DataGridView导出DataGridView中的数据到Excel中
/// </summary>
/// <param name="location">输出文件的位置</param>
/// <param name="tableName">表名</param>
/// <param name="dt">DataGridView名称</param>
public void GridViewToExcel(string location, string tableName, DataGridView dt)
{
Stream myStream;
myStream = File.Open(location,FileMode.Create);
//StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("gb2312"));
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));
string str = "";
int m=0;
try
{
//写标题
for (int i = 0; i < dt.ColumnCount; i++)
{
if (dt.Columns[i].Visible == false)
{
continue;
}
else
{
str += dt.Columns[i].HeaderText + "\t";
}
} //string aa = str.Substring(0, str.Length - 1);
sw.WriteLine(str.Substring(0,str.Length-1)); //写内容
for (int j = 0; j < dt.Rows.Count; j++)
{
if (dt.Rows[j].Visible == true)
{
string tempStr = "";
for (int k = 0; k < dt.Columns.Count; k++)
{
if (dt.Columns[k].Visible == false)
{
continue;
}
else
{
tempStr += dt.Rows[j].Cells[k].Value.ToString() + "\t";
}
} sw.WriteLine(tempStr.Substring(0,tempStr.Length-1));
}
}
sw.Close();
myStream.Close();
} catch (Exception e)
{
MessageBox.Show(e.ToString());
} finally
{
sw.Close();
myStream.Close();
}
}
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Excel = Microsoft.Office.Interop.Excel;
/**/
/// <summary>
/// InsertPictureToExcel 的摘要说明
/// </summary>
public class InsertPictureToExcel
{
private Excel.Application m_objExcel = null;
private Excel.Workbooks m_objBooks = null;
private Excel._Workbook m_objBook = null;
private Excel.Sheets m_objSheets = null;
private Excel._Worksheet m_objSheet = null;
private Excel.Range m_objRange = null;
private object m_objOpt = System.Reflection.Missing.Value;
/**/
/// <summary>
/// 打开没有模板的操作。
/// </summary>
public void Open()
{
this.Open(String.Empty);
}
/**/
/// <summary>
/// 功能：实现Excel应用程序的打开
/// </summary>
/// <param name="TemplateFilePath">模板文件物理路径</param>
public void Open(string TemplateFilePath)
{
//打开对象e69da5e887aae799bee5baa6e79fa5e98193335
m_objExcel = new Excel.Application();
m_objExcel.Visible = false;
m_objExcel.DisplayAlerts = false;
if (m_objExcel.Version != "11.0")
{
//MessageBox.Show("您的 Excel 版本不是 11.0 （Office 2003），操作可能会出现问题。");
m_objExcel.Quit();
return;
}
m_objBooks = (Excel.Workbooks)m_objExcel.Workbooks;
if (TemplateFilePath.Equals(String.Empty))
{
m_objBook = (Excel._Workbook)(m_objBooks.Add(m_objOpt));
}
else
{
m_objBook = m_objBooks.Open(TemplateFilePath, m_objOpt, m_objOpt, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);
}
m_objSheets = (Excel.Sheets)m_objBook.Worksheets;
m_objSheet = (Excel._Worksheet)(m_objSheets.get_Item(1));
m_objExcel.WorkbookBeforeClose += new Excel.AppEvents_WorkbookBeforeCloseEventHandler(m_objExcel_WorkbookBeforeClose);
}
private void m_objExcel_WorkbookBeforeClose(Excel.Workbook m_objBooks, ref bool _Cancel)
{
//MessageBox.Show("保存完毕！");
}
/**/
/// <summary>
/// 将图片插入到指定的单元格位置。
/// 注意：图片必须是绝对物理路径
/// </summary>
/// <param name="RangeName">单元格名称，例如：B4</param>
/// <param name="PicturePath">要插入图片的绝对路径。</param>
public void InsertPicture(string RangeName, string PicturePath)
{
m_objRange = m_objSheet.get_Range(RangeName, m_objOpt);
m_objRange.Select();
Excel.Pictures pics = (Excel.Pictures)m_objSheet.Pictures(m_objOpt);
pics.Insert(PicturePath, m_objOpt);
}
/**/
/// <summary>
/// 将图片插入到指定的单元格位置，并设置图片的宽度和高度。
/// 注意：图片必须是绝对物理路径
/// </summary>
/// <param name="RangeName">单元格名称，例如：B4</param>
/// <param name="PicturePath">要插入图片的绝对路径。</param>
/// <param name="PictuteWidth">插入后，图片在Excel中显示的宽度。</param>
/// <param name="PictureHeight">插入后，图片在Excel中显示的高度。</param>
public void InsertPicture(string RangeName, string PicturePath, float PictuteWidth, float PictureHeight)
{
m_objRange = m_objSheet.get_Range(RangeName, m_objOpt);
m_objRange.Select();
float PicLeft, PicTop;
PicLeft = Convert.ToSingle(m_objRange.Left);
PicTop = Convert.ToSingle(m_objRange.Top);
m_objSheet.Shapes.AddPicture(PicturePath, Microsoft.Office.Core.MsoTriState.msoFalse,
Microsoft.Office.Core.MsoTriState.msoTrue, PicLeft, PicTop, PictuteWidth, PictureHeight);
}
/**/
/// <summary>
/// 将Excel文件保存到指定的目录，目录必须事先存在，文件名称不一定要存在。
/// </summary>
/// <param name="OutputFilePath">要保存成的文件的全路径。</param>
public void SaveFile(string OutputFilePath)
{
m_objBook.SaveAs(OutputFilePath, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange,
m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);
this.Close();
}
/**/
/// <summary>
/// 关闭应用程序
/// </summary>
private void Close()
{
m_objBook.Close(false, m_objOpt, m_objOpt);
m_objExcel.Quit();
}
/**/
/// <summary>
/// 释放所引用的COM对象。注意：这个过程一定要执行。
/// </summary>
public void Dispose()
{
ReleaseObj(m_objSheets);
ReleaseObj(m_objBook);
ReleaseObj(m_objBooks);
ReleaseObj(m_objExcel);
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
}
/**/
/// <summary>
/// 释放对象，内部调用
/// </summary>
/// <param name="o"></param>
private void ReleaseObj(object o)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(o);
}
catch { }
finally { o = null; }
}
}