怎样把数据源导入到Excel
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其他回答(2)
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//先要在工具箱中添加 Microsoft.Office.Interop.Excel 组建DLL的引用
private const string DATAWORDPATH = @"C:\folder\doc\datadoc\";
private const string IMAGEWORDPATH = @"C:\folder\doc\imagedoc\";
private const string IMAGEPATH = @"C:\folder\image\";
private const string EXCELPATH = @"C:\folder\excel\";
private const string TXTPATH = @"C:\folder\txt\";
private const string IMAGEPOSTFIX = ".bmp";
private const string WORDPOSTFIX = ".doc";
private const string EXCELPOSTFIX = ".xls";
private const string TXTPOSTFIX = ".txt";
private const int DATADISTANCE = 5;
private const int TABDISTANCE = 8;
public string ExportToExcel(DataTable dt)
{
try
{
if (dt == null)
return "数据为空!";
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
if (xlApp == null)
{
return "无法创建Excel对象，可能您的电脑未安装Excel";
}
else
{
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
Microsoft.Office.Interop.Excel.Range range = null;
long totalCount = dt.Rows.Count;
long rowRead = 0;
float percent = 0;
//string fileName = saveDia.FileName;
string d = DateTime.Now.ToString();
// string fileName = @"e:\" + d + ".xls";
string fileName = @"e:\aa.xls";
//if (!System.IO.File.Exists(fileName))
//{
// System.IO.File.Create(fileName);//创建文件
//}
//写入标题
for (int i = 0; i < dt.Columns.Count; i++)
{
worksheet.Cells[1, i + 1] = dt.Columns[i].ColumnName;
range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, i + 1];
//range.Interior.ColorIndex = 15;//背景颜色
range.Font.Bold = true;//粗体
range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;//居中
//加边框
range.BorderAround(Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous, Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin, Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic, null);
//range.ColumnWidth = 4.63;//设置列宽
//range.EntireColumn.AutoFit();//自动调整列宽
//r1.EntireRow.AutoFit();//自动调整行高
}
//写入内容
for (int r = 0; r < dt.DefaultView.Count; r++)
{
for (int i = 0; i < dt.Columns.Count; i++)
{
worksheet.Cells[r + 2, i + 1] = dt.DefaultView[r][i];
range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[r + 2, i + 1];
range.Font.Size = 9;//字体大小
//加边框
range.BorderAround(Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous, Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin, Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic, null);
range.EntireColumn.AutoFit();//自动调整列宽
}
rowRead++;
percent = ((float)(100 * rowRead)) / totalCount;
//System.Windows.Forms.Application.DoEvents();
}
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideHorizontal].Weight = Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin;
if (dt.Columns.Count > 1)
{
range.Borders[Microsoft.Office.Interop.Excel.XlBordersIndex.xlInsideVertical].Weight = Microsoft.Office.Interop.Excel.XlBorderWeight.xlThin;
}
try
{
workbook.Saved = true;
workbook.SaveCopyAs(fileName);
}
catch (Exception ex)
{
return "导出文件时出错,文件可能正被打开！"+ex.Message;
}
workbooks.Close();
if (xlApp != null)
{
xlApp.Workbooks.Close();
xlApp.Quit();
int generation = System.GC.GetGeneration(xlApp);
System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);
xlApp = null;
System.GC.Collect(generation);
}
GC.Collect();//强行销毁
#region 强行杀死最近打开的Excel进程
System.Diagnostics.Process[] excelProc = System.Diagnostics.Process.GetProcessesByName("EXCEL");
System.DateTime startTime = new DateTime();
int m, killId = 0;
for (m = 0; m < excelProc.Length; m++)
{
if (startTime < excelProc[m].StartTime)
{
startTime = excelProc[m].StartTime;
killId = m;
}
}
if (excelProc[killId].HasExited == false)
{
excelProc[killId].Kill();
}
#endregion
return "导出成功!";
}
}
catch
{
return "导出失败,请检查您的电脑是否安装office2003或以上版本！";
}
}
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简单的两种方法：
#region 将整个页面输出为Excel文件
/// <summary>
/// 将整个页面输出为Excel文件
/// </summary>
/// <param name="aPage">当前页面</param>
/// <param name="fileName">文件名</param>
public static void ExportExcel(System.Web.UI.Page aPage, string fileName)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
aPage.EnableViewState = false;
}
#endregion
#region 根据传入的控件并导出为Excel文件
/// <summary>
/// 根据传入的控件并导出为Excel文件
/// </summary>
/// <param name="source">控件名</param>
/// <param name="filename">导出文件名</param>
public void ExportExcel(System.Web.UI.Control source, string filename)
{
//设置Http的头信息,编码格式Excel
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".xls", System.Text.Encoding.UTF8));
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.Charset = "UTF-8";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
//关闭控件的视图状态
source.Page.EnableViewState = false;
//初始化HtmlWriter
System.IO.StringWriter writer = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);
source.RenderControl(htmlWriter);
//输出
HttpContext.Current.Response.Write(writer.ToString());
HttpContext.Current.Response.End();
}
#endregion
