C#中如何插入照片到Excel

　　

C#中如何插入照片到Excel

 

Excel.Worksheet xSheet=( Excel.Worksheet)xBook.Sheets[1]; 　　xSheet.Shapes.AddPicture("D://tt.bmp", MsoTriState.msoFalse , 　　MsoTriState.msoTrue,10,10,150,150);

 

    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); } 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; else v_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 if (appObject.Workbooks.get_Item(p_strWorkBookName) != null) return true; return false; } .. if(this.WorkbookOpen(workbookObject.Name)) { appObject.Visible = true; } ..