DocumentImageSource.FromUri(String, IServiceContainer) Method
Creates an image source object from the specified URI string.
Namespace: DevExpress.XtraRichEdit.API.Native
Assembly: DevExpress.RichEdit.v22.1.Core.dll
NuGet Package: DevExpress.RichEdit.Core
Declaration
Parameters
Name | Type | Description |
---|---|---|
uri | String | A string of characters identifying the resource in the Internet that can be interpreted as an image. |
serviceContainer | IServiceContainer | An object providing the IUriStreamService interface which allows obtaining a data stream for a specified URI. |
Returns
Type | Description |
---|---|
DocumentImageSource | A DocumentImageSource object representing the image in the document. |
Remarks
Use the RichEditControl instance as the service container, to get images for the specified URI or implement your own service provider. The following example demonstrates how the FromUri method can be used to load an image by its URL.
This example illustrates how to insert inline pictures in a rich text document. The image can be obtained from a file, from a stream or from a URI.
using System.IO;
using System.Reflection;
using DevExpress.XtraRichEdit;
using DevExpress.XtraRichEdit.API.Native;
RichEditDocumentServer server = new RichEditDocumentServer();
server.LoadDocument("Texts\\InlinePictures.rtf", DocumentFormat.Rtf);
Document doc = server.Document;
// Insert an image from a file.
DocumentRange rangeFound = doc.FindAll("Visual Studio Magazine", SearchOptions.CaseSensitive)[0];
DocumentPosition pos = doc.Paragraphs[doc.Paragraphs.Get(rangeFound.End).Index + 2].Range.Start;
doc.Images.Insert(pos, DocumentImageSource.FromFile("Pictures\\ReadersChoice.png"));
// Insert an image from a stream.
pos = doc.Paragraphs[4].Range.Start;
string imageToInsert = "information.png";
Assembly a = Assembly.GetExecutingAssembly();
Stream imageStream = a.GetManifestResourceStream("InlinePictures.Resources." + imageToInsert);
doc.Images.Insert(pos, DocumentImageSource.FromStream(imageStream));
// Insert an image using its URI.
string imageUri = "http://i.gyazo.com/798a2ed48a3535c6c8add0ea7a4fc4e6.png";
SubDocument docHeader = doc.Sections[0].BeginUpdateHeader();
docHeader.Images.Append(DocumentImageSource.FromUri(imageUri, server));
doc.Sections[0].EndUpdateHeader(docHeader);
// Insert a barcode.
DevExpress.BarCodes.BarCode barCode = new DevExpress.BarCodes.BarCode();
barCode.Symbology = DevExpress.BarCodes.Symbology.QRCode;
barCode.CodeText = "https://www.devexpress.com/";
barCode.CodeBinaryData = System.Text.Encoding.Default.GetBytes(barCode.CodeText);
barCode.Module = 0.5;
SubDocument docFooter = doc.Sections[0].BeginUpdateFooter();
docFooter.Images.Append(barCode.BarCodeImage);
doc.Sections[0].EndUpdateFooter(docFooter);
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the FromUri(String, IServiceContainer) method.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.