Bitmap.Save() 抛出通用 GDI+ 错误或 ArgumentException

Question

This is my code:

save.Save(Environment.CurrentDirectory+ "/Content/map.png");
save.Dispose();

I have no idea why this throws a generic GDI+ error. If I change it to

save.Dispose();
save.Save(Environment.CurrentDirectory+ "/Content/map.png");

it will throw a ArgumentException because of a invalid parameter.

Answer 1

try saving the path to a FileInfo object

FileInfo lInfo = new FileInfo(Environment.CurrentDirectory + "/Content/map.png");
save.Save(lInfo.FullName);
save.Dispose();

this will ensure that the filename is in valid format. Also make sure you have administrative rights to that directory, or that visual studio is running as administrator.

This does NOT work on monogame, if you are trying to save a texture2D to a bitmap, just FYI.

Answer 2

Are you sure that

`FileInfo lInfo = new FileInfo(Environment.CurrentDirectory + "/Content/map.png");`

will work? as far as i know, you have to use

`FileInfo lInfo = new FileInfo(Path.Combine(Environment.CurrentDirectory, @"content\map.png"));`

or

`FileInfo lInfo = new FileInfo(Path.Combine(Environment.CurrentDirectory, "//content//map.png"))`

Answer 3

Use Path.Combine with direrctory and file and this method will return the path.

Example:

string file = "map.png";
string dir = Environment.CurrentDirectory;
string path = System.IO.Path.Combine(dir, file);

save.Save(path);
save.Dispose();