Question

如何把图片插入Excel的一个单元格中

Answer 1

需要添加COM组件--Microsoft Excel 11.0 Object Library 的引用。 代码的核心在图片的转换和设置excel显示图片的单元格 这个方法转换图片，传入一个excel的workbook对象和转换成字符型的image字段。 private void ExtractPicture(Excel.Workbook p_Workbook, string p_imageStr){byte[] v_Bytes = Convert.FromBase64String(p_imageStr); if (v_Bytes.Length 0){FileStream v_FileStream = new FileStream(p_Workbook.FullName + ".jpeg", FileMode.CreateNew); BinaryWriter v_BinaryWriter = new BinaryWriter(v_FileStream); // v_BinaryWriter.Write(v_Bytes); for(int i=0;i<v_Bytes.Length;i++){v_BinaryWriter.Write(v_Bytes[i]);}v_BinaryWriter.Close(); v_FileStream.Close();}} 下面这个方法在Excel中设置图片位置。 private void SetPictureToRange(Excel.Workbook p_Workbook, Excel.Worksheet p_Worksheet, string p_strRangeName){Excel.Pictures v_Pictures = (Excel.Pictures)p_Worksheet.Pictures(Type.Missing); Excel.Picture v_Picture = v_Pictures.Insert(p_Workbook.FullName + ".jpeg", Type.Missing); // Excel的get_Range方法可以得到Excel的单元格，可以用来设置图片显示的位置 Excel.Range v_Range = p_Worksheet.get_Range(p_strRangeName, Type.Missing); double v_fFactor = 1; //设置图片大小 if (v_Picture.Width * (double)v_Range.Height v_Picture.Height * (double)v_Range.Width) v_fFactor = (double)v_Range.Width / (double)v_Picture.Width;elsev_fFactor = (double)v_Range.Height / (double)v_Picture.Height; v_Picture.Left = (double)v_Range.Left + ((double)v_Range.Width - (v_Picture.Width * v_fFactor)) / 2 + 1; v_Picture.Top = (double)v_Range.Top + ((double)v_Range.Height - (v_Picture.Height * v_fFactor)) / 2 + 1; v_Picture.Width = v_Picture.Width * v_fFactor - 0.5d; v_Picture.Height = v_Picture.Height * v_fFactor - 0.5d;} 打开一个Excel很简单 private bool WorkbookOpen(string p_strWorkBookName){//returns TRUE if the workbook is open