使用Aspose將DataTable轉Excel

 

0.准備工作

 

1.下載並引入Aspose.Cells

下載Aspose Cells 並引入using Aspose.Cells 下面示例中用的是.net 3.0版本的Aspose Cells，編譯環境VS2013

具體下載和引入方法見： http://www.cnblogs.com/moonache/p/4991459.html

1.使用Aspose將DataTable轉為Excel

 

1.代碼

下面代碼用於將DataTable dt 轉為Excel文件並存在path目錄下

/// <summary>
/// DataTable轉Excel文件
/// </summary>
/// <param name="dt"></param>
/// <param name="path"></param>
/// <returns></returns>
public static bool ExportExcelWithAspose(DataTable dt, string path)
{

    if (dt != null)
    {
        try
        {
            Aspose.Cells.Workbook workbook = new Aspose.Cells.Workbook();
            Aspose.Cells.Worksheet cellSheet = workbook.Worksheets[0];
            //為head添加樣式      
            Aspose.Cells.Style headStyle = workbook.Styles[workbook.Styles.Add()];
            //設置居中  
            headStyle.HorizontalAlignment = Aspose.Cells.TextAlignmentType.Center;
            //設置背景顏色  
            headStyle.ForegroundColor = System.Drawing.Color.FromArgb(215, 236, 241);
            headStyle.Pattern = BackgroundType.Solid;
            headStyle.Font.Size = 12;
            headStyle.Font.Name = "宋體";
            headStyle.Font.IsBold = true;

            //為單元格添加樣式      
            Aspose.Cells.Style cellStyle = workbook.Styles[workbook.Styles.Add()];
            //設置居中
            cellStyle.HorizontalAlignment = Aspose.Cells.TextAlignmentType.Center;
            cellStyle.Pattern = BackgroundType.Solid;
            cellStyle.Font.Size = 12;
            cellStyle.Font.Name = "宋體";

            //設置列寬 從0開始 列寬單位是字符
            cellSheet.Cells.SetColumnWidth(1, 43);
            cellSheet.Cells.SetColumnWidth(5, 12);
            cellSheet.Cells.SetColumnWidth(7, 10);
            cellSheet.Cells.SetColumnWidth(8, 14);
            cellSheet.Cells.SetColumnWidth(9, 14);


            int rowIndex = 0;
            int colIndex = 0;
            int colCount = dt.Columns.Count;
            int rowCount = dt.Rows.Count;
            //Head 列名處理
            for (int i = 0; i < colCount; i++)
            {
                cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Columns[i].ColumnName);
                cellSheet.Cells[rowIndex, colIndex].SetStyle(headStyle);
                colIndex++;
            }
            rowIndex++;
            //Cell 其它單元格處理
            for (int i = 0; i < rowCount; i++)
            {
                colIndex = 0;
                for (int j = 0; j < colCount; j++)
                {
                    cellSheet.Cells[rowIndex, colIndex].PutValue(dt.Rows[i][j].ToString());
                    cellSheet.Cells[rowIndex, colIndex].SetStyle(cellStyle);
                    colIndex++;
                }
                rowIndex++;
            }
            cellSheet.AutoFitColumns();  //列寬自動匹配，當列寬過長是收縮
            path = Path.GetFullPath(path);
            //workbook.Save(path,SaveFormat.CSV);  
            workbook.Save(path);
            return true;
        }
        catch (Exception e)
        {
            throw new Exception("導出Excel失敗" + e.Message);
        }
    }
    else
    {
        return false;
    }

}

 

下面代碼用於直接在頁面輸出Excel文件，供用戶下載

WonderTools.ExportExcelWithAspose(templateDt,filePath);

//提供excel的下載
HttpResponse _Response = HttpContext.Current.Response;
_Response.Clear();
_Response.ClearHeaders();
_Response.Buffer = false;
_Response.ContentType = "application/x-excel";
_Response.AppendHeader("Content-Disposition", "attachment;filename=Template.xlsx");
_Response.WriteFile(fileInfo.FullName);
_Response.Flush();
_Response.End();

 

PS:

更多Excel格式設置 ：http://blog.sina.com.cn/s/blog_6438b0e50101cfer.html

官方手冊：http://www.aspose.com/docs/display/cellsnet/Introduction+of+Aspose.Cells+for+.NET

 

PPS:

直接通過 ashx 獲取數據庫中的數據並下載 Excel

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/plain";
    context.Response.AddHeader("Content-Disposition",
                               "attachment;filename=" + context.Server.UrlEncode("數據.xlsx"));

    using (var dt = SqlHelper.ExecuteQuery("SELECT * FROM T_Users"))
    {
        var workbook = new Workbook();
        var sheet = workbook.Worksheets[0];

        // Header
        for (var i = 0; i < dt.Columns.Count; i++)
        {
            sheet.Cells[0, i].PutValue(dt.Columns[i].ColumnName);
        }
        // Content
        for (var i = 0; i < dt.Rows.Count; i++)
        {
            for (var j = 0; j < dt.Columns.Count; j++)
            {
                sheet.Cells[i + 1, j].PutValue(dt.Rows[i][j].ToString());
            }
        }
        workbook.Save(context.Response.OutputStream,SaveFormat.Xlsx);
    }
}