Too man arguments to 'Public Function Save() As System.Drawing.Drawing2D.GraphicsState'

Question

User1810039979 posted

This is my first time using the System.Drawing Namespace and I'm having an issue creating the image.  I keep getting the message that I have too many arguments when i try to save the image, although all the tutorials I've seen show a path argument and a file format argument.  When I remove one argument I still get the message.  When I remove both arguments I get no error which makes me think its saving the image somewhere without me specifying a location!  Here is my VB.NET codebehind.

 

1    Imports System.Math
2    Imports System.Drawing
3    Imports System.Drawing.Imaging
4    
5    Partial Class nameofthepage
6         Inherits System.Web.UI.Page
7    
8         Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) HAndles Me.Load
9              Panel1.Visible = False
10        End Sub
11   
12        Protected Sub MyQueryResults_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyQueryResults.SelectedIndexChanged
13             Dim mapImage As New Bitmap(200, 220)
14             Dim myMapObject As Graphics
15             myMapObject = Graphics.FromImage(mapImage)
16             myMapObject.Clear(Color.Gray)
17   
18             Dim mapTitle As String
19             mapTitle = MyQueryResults.SelectedDataKey(2)
20             myMapObject.Drawstring(mapTitle, New Font("Verdana", 12), Brushes.Black, New PointF(5, 5))
21             
22             Dim savefile As String = "http://domain/fold1/fold2/myimage.gif"
23             myMapObject.Save(savefile, ImageFormat.Gif)
24             queryResultsImage.ImageUrl = savefile
25   
26             Panel1.Visible = True
27        End Sub
28   End Class

 

MyQueryResults is a Gridview control
queryResultsImage is an asp Image control

 Can anyone tell me what I'm doing wrong?  Thanks.

Answer 1

User955742345 posted

A little confusion goes a long way!

 You are trying to save the graphics object, not the Image.  Your examples should have you saving the Image object.

<STRIKE>myMapObject.Save(savefile, ImageFormat.Gif)</STRIKE>

mapImage.Save(savefile, ImageFormat.Gif)

The graphics object makes changes directly to the image, so save the image and not the graphics.

Answer 2

User1810039979 posted

Awesome. 

Thanks!