I have a simple windows form that has a button to click that loads a listbox of named elevations, when one of the elevations are clicked on the id belonging to that elevation is passed to a function that creates a bitmap and returns it to the original calling function. I keep getting these weird errors.
I keep getting a {"Parameter is not valid."} error.
Any ideas as to whats going on here?
I've also added two screen shots, one of the Window Form and one of the error.
async void lbElevations_MouseClick(object sender, MouseEventArgs e)
{
var bitmapElevation = await ShowElevation();
}
async Task<Bitmap> ShowElevation()
{
int id = int.Parse(this.lbElevations.SelectedValue.ToString());
bool isPDF = false;
Bitmap bitElevation = new Bitmap(0, 0);
bool Rotate90 = false;
string action = "getelevation";
IElevation elev = await ElevationManagerDL.GetElevationAsync(id);
action = action.ToLower();
RotateFlipType rotateFlip = Rotate90 ? RotateFlipType.Rotate90FlipNone : RotateFlipType.RotateNoneFlipNone;
//elevation / shop drawing
if (action == "getelevation")
{
#region Just Elevation
if (isPDF)
{
using (var pdf = await AlumCloudPlansBL.Manager.GetElevationPDFAsync(elev, true))
{
//pdf
}
}
else
{
using (bitElevation = await AlumCloudPlansBL.Manager.GetElevationDrawingAsync(elev, true, rotateFlip, false))
{
//canvas
}
}
#endregion
}
return bitElevation;
}
The problem you are having is that you are constructing a bitmap with 0 height and width:
The following code will also raise the exception:
try
{
Bitmap b = new Bitmap(0, 0);
}
catch (ArgumentException ex)
{
MessageBox.Show(ex.ToString());
}
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