Web Forms :: Calling Class Method Showing Compilation Error

How to pass parameter while calling a class file in aspx.cs...my class file,

public ExifMetaInfo(Uri imageUri)
{
BitmapFrame bFrame = BitmapFrame.Create(imageUri, BitmapCreateOptions.DelayCreation, BitmapCacheOption.None);
_metaInfo = (BitmapMetadata)bFrame.Metadata;
}
 
I am calling this in my aspx.cx as,

protected void Page_Load(object sender, EventArgs e)
{
WPFExifInfo.ExifMetaInfo classfile = new WPFExifInfo.ExifMetaInfo(Uri imageuri);
}
 
here showing error in (Uri imageuri);