[英]Convert local image to iText.Layout.Element image xamarin forms
I am having problems in Xamarin forms in android when converting an image that resides in the drawable repository of resources, but at the time of loading the image in a variable to later make the conversion to iText.Layout.Element.Image (which later this图像它将 go 到 pdf 使用 itext 7),根据文档,它们只给我提供兼容性错误,用于在变量中删除图像。
我想稍后在 apk 中,当它不在调试模式下执行时,这些图像将可用。 有一些类似的问题,但我没有看到图像从本地开始的任何地方
var image5 = new iText.Layout.Element.Image("logo.jpg");
using (MemoryStream memoryStream1 = new MemoryStream())
{
image5.Save(memoryStream1, ImageFormat.Png);
byte[] bytes = memoryStream1.ToArray();
}
稍后处理图像以将其合并到 pdf 文档中
ImageData imageData = ImageDataFactory.Create(bytes);
iText.Layout.Element.Image image = new iText.Layout.Element.Image(imageData);
document.Add(image);
但我从 System.Drawing 得到 Save() 方法错误,而不是如何修复它
我的另一个代码是:
var image20 = new Xamarin.Forms.Image();
Assembly assembly = this.GetType().GetTypeInfo().Assembly;
byte[] imgByteArray = null;
using (var s = assembly.GetManifestResourceStream("C:\\Users\\..\\logotipo.PNG"))
{
if (s != null)
{
var length = s.Length;
imgByteArray = new byte[length];
s.Read(imgByteArray, 0, (int)length);
image20.Source = ImageSource.FromStream(() => s);
}
}
ImageData imageData9 = ImageDataFactory.Create(imgByteArray);
iText.Layout.Element.Image image9 = new
iText.Layout.Element.Image(imageData9);
I am having problems in Xamarin forms in android when converting an image that resides in the drawable repository of resources, but at the time of loading the image in a variable to later make the conversion to iText.Layout.Element.Image (which later this图像它将 go 到 pdf 使用 itext 7),根据文档,它们只给我提供兼容性错误,用于在变量中删除图像。
我想稍后在 apk 中,当它不在调试模式下执行时,这些图像将可用。 有一些类似的问题,但我没有看到图像从本地开始的任何地方
var image5 = new iText.Layout.Element.Image("logo.jpg");
using (MemoryStream memoryStream1 = new MemoryStream())
{
image5.Save(memoryStream1, ImageFormat.Png);
byte[] bytes = memoryStream1.ToArray();
}
稍后处理图像以将其合并到 pdf 文档中
ImageData imageData = ImageDataFactory.Create(bytes);
iText.Layout.Element.Image image = new iText.Layout.Element.Image(imageData);
document.Add(image);
但我从 System.Drawing 得到 Save() 方法错误,而不是如何修复它
我的另一个代码是:
var image20 = new Xamarin.Forms.Image();
Assembly assembly = this.GetType().GetTypeInfo().Assembly;
byte[] imgByteArray = null;
using (var s = assembly.GetManifestResourceStream("C:\\Users\\..\\logotipo.PNG"))
{
if (s != null)
{
var length = s.Length;
imgByteArray = new byte[length];
s.Read(imgByteArray, 0, (int)length);
image20.Source = ImageSource.FromStream(() => s);
}
}
ImageData imageData9 = ImageDataFactory.Create(imgByteArray);
iText.Layout.Element.Image image9 = new
iText.Layout.Element.Image(imageData9);
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