C# Aspose.Cells.dll Excel操做總結

簡介

Aspose.Cells是一款功能強大的 Excel 文檔處理和轉換控件，不依賴 Microsoft Excel 環境，支持全部 Excel 格式類型的操做。

下載 Aspose.Cells.dll

獲取Excel數據

Workbook workbook = new Workbook("E:\\test.xlsx");
Cells cells = workbook.Worksheets[0].Cells;
for (int i = 0; i < cells.MaxDataRow + 1; i++)
{
    for (int j = 0; j < cells.MaxDataColumn + 1; j++)
    {
        string s = cells[i, j].StringValue.Trim();
        //一行行的讀取數據，插入數據庫的代碼也能夠在這裏寫
    }
}

返回DataTable數據

Workbook workbook = new Workbook("E:\\test.xlsx");
Cells cells = workbook.Worksheets[0].Cells;
System.Data.DataTable dataTable1 = cells.ExportDataTable(1, 0, cells.MaxDataRow, cells.MaxColumn);//沒有標題
System.Data.DataTable dataTable2 = cells.ExportDataTable(0, 0, cells.MaxDataRow + 1, cells.MaxColumn, true);//有標題

無標題

有標題

使用小結

生成Excel

/// <summary>
/// DataTable數據導出Excel
/// </summary>
/// <param name="data"></param>
/// <param name="filepath"></param>
public static void DataTableExport(DataTable data, string filepath)
{
    try
    {
        //Workbook book = new Workbook("E:\\test.xlsx"); //打開工做簿
        Workbook book = new Workbook(); //建立工做簿
        Worksheet sheet = book.Worksheets[0]; //建立工做表
        Cells cells = sheet.Cells; //單元格
        //建立樣式
        Aspose.Cells.Style style = book.Styles[book.Styles.Add()];
        style.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = Aspose.Cells.CellBorderType.Thin; //應用邊界線 左邊界線  
        style.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = Aspose.Cells.CellBorderType.Thin; //應用邊界線 右邊界線  
        style.Borders[Aspose.Cells.BorderType.TopBorder].LineStyle = Aspose.Cells.CellBorderType.Thin; //應用邊界線 上邊界線  
        style.Borders[Aspose.Cells.BorderType.BottomBorder].LineStyle = Aspose.Cells.CellBorderType.Thin; //應用邊界線 下邊界線   
        style.HorizontalAlignment = TextAlignmentType.Center; //單元格內容的水平對齊方式文字居中
        style.Font.Name = "宋體"; //字體
        style1.Font.IsBold = true; //設置粗體
        style.Font.Size = 11; //設置字體大小
        //style.ForegroundColor = System.Drawing.Color.FromArgb(153, 204, 0); //背景色
        //style.Pattern = Aspose.Cells.BackgroundType.Solid; //背景樣式
        //style.IsTextWrapped = true; //單元格內容自動換行
        
        //表格填充數據
        int Colnum = data.Columns.Count;//表格列數 
        int Rownum = data.Rows.Count;//表格行數 
        //生成行 列名行 
        for (int i = 0; i < Colnum; i++)
        {
            cells[0, i].PutValue(data.Columns[i].ColumnName); //添加表頭
            cells[0, i].SetStyle(style); //添加樣式
            //cells.SetColumnWidth(i, data.Columns[i].ColumnName.Length * 2 + 1.5); //自定義列寬
            //cells.SetRowHeight(0, 30); //自定義高
        }
        //生成數據行 
        for (int i = 0; i < Rownum; i++)
        {
            for (int k = 0; k < Colnum; k++)
            {
                cells[1 + i, k].PutValue(data.Rows[i][k].ToString()); //添加數據
                cells[1 + i, k].SetStyle(style); //添加樣式
            }
            cells[1 + i, 5].Formula = "=B" + (2 + i) + "+C" + (2 + i);//給單元格設置計算公式，計算班級總人數
        }
        sheet.AutoFitColumns(); //自適應寬
        book.Save(filepath); //保存
        GC.Collect();
    }
    catch (Exception e)
    {
        logger.Error("生成excel出錯：" + e.Message);
    }
}

調用Excel（例子）

public void DownExcel()
{
    //建立DataTable
    DataTable dt = new DataTable("Table_AX");
    dt.Columns.Add("班級名稱", System.Type.GetType("System.String"));
    dt.Columns.Add("男生人數", System.Type.GetType("System.String"));
    dt.Columns.Add("女生人數", System.Type.GetType("System.String"));
    dt.Columns.Add("今日請假", System.Type.GetType("System.String"));
    dt.Columns.Add("今日遲到", System.Type.GetType("System.String"));
    Random ran = new Random();
    for (int i = 1; i < 6; i++)
    {
        DataRow dr = dt.NewRow();
        dr["班級名稱"] = "軟件技術" + i + "班";
        dr["男生人數"] = ran.Next(1, 50);
        dr["女生人數"] = ran.Next(1, 50);
        dr["今日請假"] = ran.Next(0, 10);
        dr["今日遲到"] = ran.Next(1, 30);
        dt.Rows.Add(dr);
    }
    //地址
    string fileName = "班級概況.xls";
    string filePath = AppDomain.CurrentDomain.BaseDirectory.Replace("\\", "/") + "GxContent/data/student/" + fileName + "";
    //生成Excel
    ExcelHelper.DataTableExport(dt, filePath);
    //下載
    if (System.IO.File.Exists(filePath))
    {
        try
        {
            System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);
            if (fileInfo.Exists == true)
            {
                //每次讀取文件，只讀取1M，這樣能夠緩解服務器的壓力
                const long ChunkSize = 1048576;
                byte[] buffer = new byte[ChunkSize];

                Response.Clear();
                //獲取文件
                System.IO.FileStream iStream = System.IO.File.OpenRead(filePath);
                //獲取下載的文件總大小
                long dataLengthToRead = iStream.Length;
                Response.ContentType = "application/octet-stream";
                //通知瀏覽器下載文件而不是打開 
                Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);
                using (iStream)//解決文件佔用問題，using 外 iStream.Dispose() 沒法釋放文件
                {
                    while (dataLengthToRead > 0 && Response.IsClientConnected)
                    {
                        int lengthRead = iStream.Read(buffer, 0, Convert.ToInt32(ChunkSize));//讀取的大小
                        Response.OutputStream.Write(buffer, 0, lengthRead);
                        Response.Flush();
                        dataLengthToRead = dataLengthToRead - lengthRead;
                    }
                    iStream.Dispose();
                    iStream.Close();
                }
                Response.End();
            }
        }
        catch
        {
            Response.Write("<script>alert('文件未佔用或文件未生成，請稍後重試！');window.close();</script>");
        }
    }
    else
    {
        Response.Write("<script>alert('文件還未生成完，請稍後重試！');window.close();</script>");
    }
}

效果

 

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