我正在寻找一种在一个文档中保存3个不同图表的方法。 我的程序会计算一些数据,这些数据将显示在3个不同的图表中 我有chart1,chart2和chart3 我找到了这个代码,它只是将1个图表保存为一个文档中的图像
01 ' Displays a SaveFileDialog so the user can save the Image
02 ' assigned to Button2.
03 Dim saveFileDialog1 As New SaveFileDialog()
04 saveFileDialog1.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif"
05 saveFileDialog1.Title = "Save an Image File"
06 saveFileDialog1.ShowDialog()
07
08 ' If the file name is not an empty string open it for saving.
09 If saveFileDialog1.FileName <> "" Then
10 ' Saves the Image via a FileStream created by the OpenFile method.
11 Dim fs As System.IO.FileStream = CType _
12 (saveFileDialog1.OpenFile(), System.IO.FileStream)
13 ' Saves the Image in the appropriate ImageFormat based upon the
14 ' file type selected in the dialog box.
15 ' NOTE that the FilterIndex property is one-based.
16 Select Case saveFileDialog1.FilterIndex
17 Case 1
18 Chart1.SaveImage(fs, _
19 System.Drawing.Imaging.ImageFormat.Jpeg)
20
21 Case 2
22 Chart1.SaveImage(fs, _
23 System.Drawing.Imaging.ImageFormat.Bmp)
24
25 Case 3
26 Chart1.SaveImage(fs, _
27 System.Drawing.Imaging.ImageFormat.Gif)
28 End Select
有没有人有其他建议通过点击我的vb.net程序中的按钮在一个文档上保存3个不同的图表?
答案 0 :(得分:0)
您应该将每个图表写入文件:
Chart1.SaveImage(fs & 1, System.Drawing.Imaging.ImageFormat.Jpeg)
Chart2.SaveImage(fs & 2, System.Drawing.Imaging.ImageFormat.Jpeg)
Chart3.SaveImage(fs & 3, System.Drawing.Imaging.ImageFormat.Jpeg)
使用Graphics.DrawImage(http://msdn.microsoft.com/en-us/library/42807xh1.aspx_
从这些文件创建新图形然后,您可以使用Image.Save(http://msdn.microsoft.com/en-us/library/9t4syfhh%28v=vs.110%29.aspx)
将此图像汇编保存在一个文件中玩得开心!